./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix031.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/mix031.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix031.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 [2024-06-28 01:32:05,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:32:05,678 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:32:05,683 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:32:05,683 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:32:05,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:32:05,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:32:05,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:32:05,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:32:05,712 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:32:05,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:32:05,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:32:05,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:32:05,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:32:05,714 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:32:05,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:32:05,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:32:05,715 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:32:05,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:32:05,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:32:05,717 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:32:05,717 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:32:05,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:32:05,718 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:32:05,718 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:32:05,719 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:32:05,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:32:05,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:32:05,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:32:05,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:32:05,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:32:05,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:32:05,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:05,722 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:32:05,722 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:32:05,722 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:32:05,723 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:32:05,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:32:05,723 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:32:05,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:32:05,724 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:32:05,724 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:32:05,725 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:32:05,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:32:05,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:32:05,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:32:05,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:32:05,987 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:32:05,988 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:32:05,989 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix031.oepc.yml/witness.yml [2024-06-28 01:32:06,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:32:06,163 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:32:06,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-28 01:32:07,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:32:07,651 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:32:07,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.oepc.i [2024-06-28 01:32:07,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43bce0fd6/09bc2335834e459883377e7a7d2bb936/FLAG249671cf0 [2024-06-28 01:32:07,678 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43bce0fd6/09bc2335834e459883377e7a7d2bb936 [2024-06-28 01:32:07,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:32:07,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:32:07,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:07,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:32:07,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:32:07,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:06" (1/2) ... [2024-06-28 01:32:07,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ea528c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:07, skipping insertion in model container [2024-06-28 01:32:07,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:06" (1/2) ... [2024-06-28 01:32:07,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52466f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:32:07, skipping insertion in model container [2024-06-28 01:32:07,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:07" (2/2) ... [2024-06-28 01:32:07,689 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ea528c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:07, skipping insertion in model container [2024-06-28 01:32:07,689 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:32:07" (2/2) ... [2024-06-28 01:32:07,689 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:32:07,758 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:32:07,759 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:32:07,760 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ((((((((((((((((((! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:32:07,760 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:32:07,760 INFO L106 edCorrectnessWitness]: ghost_update [L828-L828] multithreaded = 1; [2024-06-28 01:32:07,805 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:32:07,989 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/mix031.oepc.i[945,958] [2024-06-28 01:32:08,251 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:08,261 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:32:08,300 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/mix031.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:32:08,398 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:32:08,452 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:32:08,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08 WrapperNode [2024-06-28 01:32:08,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:32:08,454 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:08,454 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:32:08,454 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:32:08,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,529 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 119 [2024-06-28 01:32:08,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:32:08,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:32:08,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:32:08,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:32:08,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,553 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,571 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]. [2024-06-28 01:32:08,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,596 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:32:08,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:32:08,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:32:08,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:32:08,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (1/1) ... [2024-06-28 01:32:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:32:08,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:32:08,637 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) [2024-06-28 01:32:08,663 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 [2024-06-28 01:32:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:32:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:32:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:32:08,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:32:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:32:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:32:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:32:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:32:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:32:08,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:32:08,683 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:32:08,830 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:32:08,831 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:32:09,201 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:32:09,204 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:32:09,383 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:32:09,384 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:32:09,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:09 BoogieIcfgContainer [2024-06-28 01:32:09,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:32:09,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:32:09,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:32:09,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:32:09,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:32:06" (1/4) ... [2024-06-28 01:32:09,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5440f5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:32:09, skipping insertion in model container [2024-06-28 01:32:09,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:32:07" (2/4) ... [2024-06-28 01:32:09,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5440f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:09, skipping insertion in model container [2024-06-28 01:32:09,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:32:08" (3/4) ... [2024-06-28 01:32:09,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5440f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:32:09, skipping insertion in model container [2024-06-28 01:32:09,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:32:09" (4/4) ... [2024-06-28 01:32:09,399 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.oepc.i [2024-06-28 01:32:09,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:32:09,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:32:09,416 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:32:09,462 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:32:09,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 86 flow [2024-06-28 01:32:09,536 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-06-28 01:32:09,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:09,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-06-28 01:32:09,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 86 flow [2024-06-28 01:32:09,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 37 transitions, 80 flow [2024-06-28 01:32:09,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:32:09,565 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;@72caadeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:32:09,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:32:09,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:32:09,569 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:32:09,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:32:09,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:09,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:09,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:09,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:09,579 INFO L85 PathProgramCache]: Analyzing trace with hash 324424917, now seen corresponding path program 1 times [2024-06-28 01:32:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:09,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947010397] [2024-06-28 01:32:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:10,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947010397] [2024-06-28 01:32:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947010397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:10,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856949414] [2024-06-28 01:32:10,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:10,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:10,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:10,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-06-28 01:32:10,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 80 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) [2024-06-28 01:32:10,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:10,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-06-28 01:32:10,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:10,932 INFO L124 PetriNetUnfolderBase]: 559/986 cut-off events. [2024-06-28 01:32:10,932 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 01:32:10,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1935 conditions, 986 events. 559/986 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5181 event pairs, 217 based on Foata normal form. 50/961 useless extension candidates. Maximal degree in co-relation 1924. Up to 920 conditions per place. [2024-06-28 01:32:10,945 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 31 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-06-28 01:32:10,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 173 flow [2024-06-28 01:32:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-28 01:32:10,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-06-28 01:32:10,960 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 80 flow. Second operand 3 states and 81 transitions. [2024-06-28 01:32:10,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 173 flow [2024-06-28 01:32:10,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:10,967 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 104 flow [2024-06-28 01:32:10,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-28 01:32:10,973 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-28 01:32:10,973 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 104 flow [2024-06-28 01:32:10,974 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) [2024-06-28 01:32:10,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:10,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:32:10,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:32:10,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:10,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:10,975 INFO L85 PathProgramCache]: Analyzing trace with hash 324425326, now seen corresponding path program 1 times [2024-06-28 01:32:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:10,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279698208] [2024-06-28 01:32:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:10,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:11,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279698208] [2024-06-28 01:32:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279698208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:11,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:32:11,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871896750] [2024-06-28 01:32:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:11,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:32:11,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:32:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:32:11,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-06-28 01:32:11,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:11,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:11,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-06-28 01:32:11,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:11,167 INFO L124 PetriNetUnfolderBase]: 152/383 cut-off events. [2024-06-28 01:32:11,167 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 01:32:11,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 383 events. 152/383 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2036 event pairs, 52 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 715. Up to 227 conditions per place. [2024-06-28 01:32:11,170 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 23 selfloop transitions, 3 changer transitions 2/48 dead transitions. [2024-06-28 01:32:11,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 175 flow [2024-06-28 01:32:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:32:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:32:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-28 01:32:11,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-06-28 01:32:11,173 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 104 flow. Second operand 3 states and 91 transitions. [2024-06-28 01:32:11,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 175 flow [2024-06-28 01:32:11,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:11,176 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 96 flow [2024-06-28 01:32:11,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-06-28 01:32:11,177 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-28 01:32:11,178 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 96 flow [2024-06-28 01:32:11,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:11,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:11,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:11,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:32:11,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:11,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:11,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1760222765, now seen corresponding path program 1 times [2024-06-28 01:32:11,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675804674] [2024-06-28 01:32:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:11,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:11,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675804674] [2024-06-28 01:32:11,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675804674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:11,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:32:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031615226] [2024-06-28 01:32:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:11,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:32:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:32:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:32:11,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-06-28 01:32:11,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:11,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:11,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-06-28 01:32:11,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:12,084 INFO L124 PetriNetUnfolderBase]: 402/807 cut-off events. [2024-06-28 01:32:12,085 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-06-28 01:32:12,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1672 conditions, 807 events. 402/807 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4442 event pairs, 191 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 1659. Up to 658 conditions per place. [2024-06-28 01:32:12,090 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 35 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2024-06-28 01:32:12,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 224 flow [2024-06-28 01:32:12,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:32:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:32:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-06-28 01:32:12,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-28 01:32:12,092 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 96 flow. Second operand 4 states and 97 transitions. [2024-06-28 01:32:12,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 224 flow [2024-06-28 01:32:12,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:12,094 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 139 flow [2024-06-28 01:32:12,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-28 01:32:12,095 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-28 01:32:12,095 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 139 flow [2024-06-28 01:32:12,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:12,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:12,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:12,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:32:12,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:12,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1267670618, now seen corresponding path program 1 times [2024-06-28 01:32:12,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:12,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828793465] [2024-06-28 01:32:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:12,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:12,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:12,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828793465] [2024-06-28 01:32:12,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828793465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:12,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:12,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:32:12,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834171161] [2024-06-28 01:32:12,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:12,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:32:12,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:32:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:32:12,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-28 01:32:12,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 139 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) [2024-06-28 01:32:12,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:12,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-28 01:32:12,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:12,994 INFO L124 PetriNetUnfolderBase]: 477/966 cut-off events. [2024-06-28 01:32:12,994 INFO L125 PetriNetUnfolderBase]: For 373/373 co-relation queries the response was YES. [2024-06-28 01:32:12,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 966 events. 477/966 cut-off events. For 373/373 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5414 event pairs, 281 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 2129. Up to 764 conditions per place. [2024-06-28 01:32:13,000 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 43 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2024-06-28 01:32:13,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 297 flow [2024-06-28 01:32:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-28 01:32:13,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948717948717949 [2024-06-28 01:32:13,002 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 139 flow. Second operand 5 states and 116 transitions. [2024-06-28 01:32:13,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 297 flow [2024-06-28 01:32:13,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 290 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:13,004 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 167 flow [2024-06-28 01:32:13,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 01:32:13,005 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-28 01:32:13,006 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 167 flow [2024-06-28 01:32:13,006 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) [2024-06-28 01:32:13,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:13,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:13,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:32:13,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:13,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash 643085010, now seen corresponding path program 1 times [2024-06-28 01:32:13,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:13,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313988373] [2024-06-28 01:32:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:13,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:13,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313988373] [2024-06-28 01:32:13,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313988373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:13,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:13,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:13,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2584563] [2024-06-28 01:32:13,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:13,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:13,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-28 01:32:13,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:13,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:13,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-28 01:32:13,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:14,045 INFO L124 PetriNetUnfolderBase]: 477/948 cut-off events. [2024-06-28 01:32:14,045 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-06-28 01:32:14,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 948 events. 477/948 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5252 event pairs, 162 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 2251. Up to 749 conditions per place. [2024-06-28 01:32:14,053 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 50 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-28 01:32:14,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 363 flow [2024-06-28 01:32:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:14,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:32:14,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-06-28 01:32:14,057 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 167 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:32:14,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 363 flow [2024-06-28 01:32:14,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 346 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:14,076 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 191 flow [2024-06-28 01:32:14,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 01:32:14,081 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-28 01:32:14,082 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 191 flow [2024-06-28 01:32:14,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:14,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:14,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:14,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:32:14,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:14,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1768684396, now seen corresponding path program 1 times [2024-06-28 01:32:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:14,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292763900] [2024-06-28 01:32:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:14,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:14,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:14,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292763900] [2024-06-28 01:32:14,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292763900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:14,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:14,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:32:14,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426449233] [2024-06-28 01:32:14,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:14,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:32:14,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:32:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:32:14,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-28 01:32:14,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:14,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:14,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-28 01:32:14,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:15,304 INFO L124 PetriNetUnfolderBase]: 603/1218 cut-off events. [2024-06-28 01:32:15,304 INFO L125 PetriNetUnfolderBase]: For 1112/1114 co-relation queries the response was YES. [2024-06-28 01:32:15,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2966 conditions, 1218 events. 603/1218 cut-off events. For 1112/1114 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6938 event pairs, 274 based on Foata normal form. 3/1180 useless extension candidates. Maximal degree in co-relation 2947. Up to 987 conditions per place. [2024-06-28 01:32:15,312 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 41 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2024-06-28 01:32:15,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 323 flow [2024-06-28 01:32:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:32:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:32:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-28 01:32:15,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-28 01:32:15,314 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 191 flow. Second operand 5 states and 98 transitions. [2024-06-28 01:32:15,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 323 flow [2024-06-28 01:32:15,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 300 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:15,320 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 200 flow [2024-06-28 01:32:15,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-28 01:32:15,323 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-28 01:32:15,323 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 200 flow [2024-06-28 01:32:15,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:15,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:15,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:15,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:32:15,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:15,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash -470546479, now seen corresponding path program 1 times [2024-06-28 01:32:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:15,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025804732] [2024-06-28 01:32:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:15,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:16,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:16,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025804732] [2024-06-28 01:32:16,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025804732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:16,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:16,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:16,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699279516] [2024-06-28 01:32:16,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:16,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:16,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:16,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-28 01:32:16,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 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) [2024-06-28 01:32:16,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:16,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-28 01:32:16,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:16,801 INFO L124 PetriNetUnfolderBase]: 547/1058 cut-off events. [2024-06-28 01:32:16,802 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2024-06-28 01:32:16,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 1058 events. 547/1058 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5809 event pairs, 208 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 2735. Up to 816 conditions per place. [2024-06-28 01:32:16,809 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 67 selfloop transitions, 22 changer transitions 0/99 dead transitions. [2024-06-28 01:32:16,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 552 flow [2024-06-28 01:32:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:32:16,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-06-28 01:32:16,811 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 200 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:32:16,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 552 flow [2024-06-28 01:32:16,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 538 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:16,816 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 342 flow [2024-06-28 01:32:16,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-06-28 01:32:16,817 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-28 01:32:16,817 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 342 flow [2024-06-28 01:32:16,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 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) [2024-06-28 01:32:16,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:16,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:16,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:32:16,818 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:16,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1026807259, now seen corresponding path program 1 times [2024-06-28 01:32:16,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:16,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308762784] [2024-06-28 01:32:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:16,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:17,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:17,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308762784] [2024-06-28 01:32:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308762784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:17,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:17,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:17,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512622034] [2024-06-28 01:32:17,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:17,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:17,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:17,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:17,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:17,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:17,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:17,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:18,094 INFO L124 PetriNetUnfolderBase]: 687/1311 cut-off events. [2024-06-28 01:32:18,094 INFO L125 PetriNetUnfolderBase]: For 2210/2216 co-relation queries the response was YES. [2024-06-28 01:32:18,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 1311 events. 687/1311 cut-off events. For 2210/2216 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7289 event pairs, 215 based on Foata normal form. 7/1279 useless extension candidates. Maximal degree in co-relation 3756. Up to 1114 conditions per place. [2024-06-28 01:32:18,104 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 57 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-06-28 01:32:18,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 524 flow [2024-06-28 01:32:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 01:32:18,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 01:32:18,106 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 342 flow. Second operand 6 states and 111 transitions. [2024-06-28 01:32:18,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 524 flow [2024-06-28 01:32:18,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 487 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:18,112 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 342 flow [2024-06-28 01:32:18,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-28 01:32:18,114 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-28 01:32:18,114 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 342 flow [2024-06-28 01:32:18,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:18,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:18,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:18,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:32:18,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:18,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1774805094, now seen corresponding path program 1 times [2024-06-28 01:32:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:18,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099366912] [2024-06-28 01:32:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:18,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:18,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099366912] [2024-06-28 01:32:18,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099366912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:18,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:18,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:18,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315327309] [2024-06-28 01:32:18,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:18,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:18,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:18,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-28 01:32:18,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 342 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) [2024-06-28 01:32:18,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:18,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-28 01:32:18,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:19,201 INFO L124 PetriNetUnfolderBase]: 637/1226 cut-off events. [2024-06-28 01:32:19,201 INFO L125 PetriNetUnfolderBase]: For 2540/2543 co-relation queries the response was YES. [2024-06-28 01:32:19,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3736 conditions, 1226 events. 637/1226 cut-off events. For 2540/2543 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6783 event pairs, 150 based on Foata normal form. 4/1196 useless extension candidates. Maximal degree in co-relation 3708. Up to 999 conditions per place. [2024-06-28 01:32:19,210 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 62 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-06-28 01:32:19,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 591 flow [2024-06-28 01:32:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 01:32:19,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170940170940171 [2024-06-28 01:32:19,212 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 342 flow. Second operand 6 states and 121 transitions. [2024-06-28 01:32:19,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 591 flow [2024-06-28 01:32:19,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 567 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:19,216 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 402 flow [2024-06-28 01:32:19,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-06-28 01:32:19,217 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-28 01:32:19,218 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 402 flow [2024-06-28 01:32:19,218 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) [2024-06-28 01:32:19,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:19,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:19,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:32:19,220 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:19,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:19,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1078985604, now seen corresponding path program 2 times [2024-06-28 01:32:19,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:19,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088294764] [2024-06-28 01:32:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:19,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:19,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:19,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088294764] [2024-06-28 01:32:19,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088294764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:19,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:19,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:19,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546477936] [2024-06-28 01:32:19,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:19,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:19,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:19,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:20,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-28 01:32:20,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 402 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) [2024-06-28 01:32:20,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:20,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-28 01:32:20,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:20,420 INFO L124 PetriNetUnfolderBase]: 642/1252 cut-off events. [2024-06-28 01:32:20,421 INFO L125 PetriNetUnfolderBase]: For 3217/3223 co-relation queries the response was YES. [2024-06-28 01:32:20,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1252 events. 642/1252 cut-off events. For 3217/3223 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7049 event pairs, 201 based on Foata normal form. 7/1225 useless extension candidates. Maximal degree in co-relation 3969. Up to 1035 conditions per place. [2024-06-28 01:32:20,430 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 58 selfloop transitions, 12 changer transitions 0/82 dead transitions. [2024-06-28 01:32:20,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 82 transitions, 589 flow [2024-06-28 01:32:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 01:32:20,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 01:32:20,432 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 402 flow. Second operand 7 states and 126 transitions. [2024-06-28 01:32:20,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 82 transitions, 589 flow [2024-06-28 01:32:20,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 579 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:32:20,440 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 441 flow [2024-06-28 01:32:20,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=441, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-06-28 01:32:20,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-06-28 01:32:20,442 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 441 flow [2024-06-28 01:32:20,442 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) [2024-06-28 01:32:20,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:20,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:20,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:32:20,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:20,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1355541968, now seen corresponding path program 1 times [2024-06-28 01:32:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:20,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768573670] [2024-06-28 01:32:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:21,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:21,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768573670] [2024-06-28 01:32:21,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768573670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:21,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:21,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:21,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006151585] [2024-06-28 01:32:21,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:21,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:21,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:21,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:21,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:21,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-28 01:32:21,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 441 flow. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:21,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:21,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-28 01:32:21,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:22,124 INFO L124 PetriNetUnfolderBase]: 590/1178 cut-off events. [2024-06-28 01:32:22,125 INFO L125 PetriNetUnfolderBase]: For 3664/3664 co-relation queries the response was YES. [2024-06-28 01:32:22,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3806 conditions, 1178 events. 590/1178 cut-off events. For 3664/3664 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6624 event pairs, 172 based on Foata normal form. 4/1137 useless extension candidates. Maximal degree in co-relation 3773. Up to 845 conditions per place. [2024-06-28 01:32:22,134 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 78 selfloop transitions, 24 changer transitions 0/113 dead transitions. [2024-06-28 01:32:22,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 769 flow [2024-06-28 01:32:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:22,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 01:32:22,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2024-06-28 01:32:22,136 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 441 flow. Second operand 9 states and 192 transitions. [2024-06-28 01:32:22,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 769 flow [2024-06-28 01:32:22,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 113 transitions, 734 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:22,146 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 446 flow [2024-06-28 01:32:22,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=446, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-06-28 01:32:22,147 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-28 01:32:22,147 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 446 flow [2024-06-28 01:32:22,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:22,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:22,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:22,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:32:22,148 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:22,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1766253093, now seen corresponding path program 1 times [2024-06-28 01:32:22,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:22,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437913095] [2024-06-28 01:32:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:22,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:22,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437913095] [2024-06-28 01:32:22,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437913095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:22,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:22,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673305329] [2024-06-28 01:32:22,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:22,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:22,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:22,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:23,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:23,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 446 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:23,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:23,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:23,535 INFO L124 PetriNetUnfolderBase]: 690/1283 cut-off events. [2024-06-28 01:32:23,535 INFO L125 PetriNetUnfolderBase]: For 4146/4152 co-relation queries the response was YES. [2024-06-28 01:32:23,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4313 conditions, 1283 events. 690/1283 cut-off events. For 4146/4152 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6952 event pairs, 203 based on Foata normal form. 9/1260 useless extension candidates. Maximal degree in co-relation 4280. Up to 1083 conditions per place. [2024-06-28 01:32:23,545 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 67 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-28 01:32:23,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 674 flow [2024-06-28 01:32:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:32:23,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-28 01:32:23,548 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 446 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:32:23,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 674 flow [2024-06-28 01:32:23,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 605 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:23,555 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 426 flow [2024-06-28 01:32:23,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=426, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-06-28 01:32:23,556 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-06-28 01:32:23,557 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 426 flow [2024-06-28 01:32:23,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:23,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:23,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:32:23,557 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:23,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash 624954479, now seen corresponding path program 1 times [2024-06-28 01:32:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:23,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45291050] [2024-06-28 01:32:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:24,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:24,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45291050] [2024-06-28 01:32:24,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45291050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:24,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:24,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:24,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474264329] [2024-06-28 01:32:24,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:24,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:24,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:24,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:24,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:24,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 426 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:24,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:24,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:24,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:24,758 INFO L124 PetriNetUnfolderBase]: 684/1281 cut-off events. [2024-06-28 01:32:24,758 INFO L125 PetriNetUnfolderBase]: For 4524/4526 co-relation queries the response was YES. [2024-06-28 01:32:24,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4323 conditions, 1281 events. 684/1281 cut-off events. For 4524/4526 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6948 event pairs, 145 based on Foata normal form. 3/1248 useless extension candidates. Maximal degree in co-relation 4289. Up to 1022 conditions per place. [2024-06-28 01:32:24,771 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 73 selfloop transitions, 19 changer transitions 0/101 dead transitions. [2024-06-28 01:32:24,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 732 flow [2024-06-28 01:32:24,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:24,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:24,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 01:32:24,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-28 01:32:24,773 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 426 flow. Second operand 7 states and 136 transitions. [2024-06-28 01:32:24,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 732 flow [2024-06-28 01:32:24,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 101 transitions, 699 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:24,781 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 464 flow [2024-06-28 01:32:24,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=464, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-06-28 01:32:24,782 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-28 01:32:24,782 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 464 flow [2024-06-28 01:32:24,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:24,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:24,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:24,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:32:24,784 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:24,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash 749421663, now seen corresponding path program 2 times [2024-06-28 01:32:24,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:24,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564584693] [2024-06-28 01:32:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:25,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:25,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564584693] [2024-06-28 01:32:25,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564584693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:25,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:25,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:25,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093900757] [2024-06-28 01:32:25,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:25,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:25,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:25,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:25,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:25,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:25,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 464 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:25,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:25,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:25,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:26,009 INFO L124 PetriNetUnfolderBase]: 695/1296 cut-off events. [2024-06-28 01:32:26,010 INFO L125 PetriNetUnfolderBase]: For 5187/5189 co-relation queries the response was YES. [2024-06-28 01:32:26,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 1296 events. 695/1296 cut-off events. For 5187/5189 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7022 event pairs, 147 based on Foata normal form. 3/1264 useless extension candidates. Maximal degree in co-relation 4479. Up to 1034 conditions per place. [2024-06-28 01:32:26,046 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 71 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2024-06-28 01:32:26,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 100 transitions, 752 flow [2024-06-28 01:32:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 01:32:26,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2024-06-28 01:32:26,048 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 464 flow. Second operand 7 states and 134 transitions. [2024-06-28 01:32:26,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 100 transitions, 752 flow [2024-06-28 01:32:26,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 100 transitions, 723 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:26,057 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 496 flow [2024-06-28 01:32:26,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=496, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-06-28 01:32:26,058 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-06-28 01:32:26,058 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 496 flow [2024-06-28 01:32:26,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:26,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:26,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:32:26,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:26,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:26,060 INFO L85 PathProgramCache]: Analyzing trace with hash 749421911, now seen corresponding path program 1 times [2024-06-28 01:32:26,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:26,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716842271] [2024-06-28 01:32:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:26,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:26,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:26,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716842271] [2024-06-28 01:32:26,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716842271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:26,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:26,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:26,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782068139] [2024-06-28 01:32:26,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:26,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:26,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:26,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:26,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:26,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:26,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 496 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:26,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:26,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:26,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:27,205 INFO L124 PetriNetUnfolderBase]: 735/1366 cut-off events. [2024-06-28 01:32:27,206 INFO L125 PetriNetUnfolderBase]: For 5706/5709 co-relation queries the response was YES. [2024-06-28 01:32:27,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4741 conditions, 1366 events. 735/1366 cut-off events. For 5706/5709 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7476 event pairs, 161 based on Foata normal form. 4/1328 useless extension candidates. Maximal degree in co-relation 4704. Up to 1111 conditions per place. [2024-06-28 01:32:27,220 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 75 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-06-28 01:32:27,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 107 transitions, 816 flow [2024-06-28 01:32:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 01:32:27,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2024-06-28 01:32:27,222 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 496 flow. Second operand 7 states and 134 transitions. [2024-06-28 01:32:27,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 107 transitions, 816 flow [2024-06-28 01:32:27,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 782 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:27,232 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 564 flow [2024-06-28 01:32:27,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-06-28 01:32:27,234 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 47 predicate places. [2024-06-28 01:32:27,234 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 564 flow [2024-06-28 01:32:27,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:27,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:27,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:27,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:32:27,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:27,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:27,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1443186783, now seen corresponding path program 3 times [2024-06-28 01:32:27,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:27,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792657828] [2024-06-28 01:32:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:27,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:27,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:27,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792657828] [2024-06-28 01:32:27,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792657828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:27,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:27,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:27,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968176247] [2024-06-28 01:32:27,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:27,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:27,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:27,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:27,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:28,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:28,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 564 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:28,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:28,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:28,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:28,420 INFO L124 PetriNetUnfolderBase]: 722/1369 cut-off events. [2024-06-28 01:32:28,420 INFO L125 PetriNetUnfolderBase]: For 6978/6978 co-relation queries the response was YES. [2024-06-28 01:32:28,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 1369 events. 722/1369 cut-off events. For 6978/6978 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7651 event pairs, 201 based on Foata normal form. 1/1331 useless extension candidates. Maximal degree in co-relation 4936. Up to 1134 conditions per place. [2024-06-28 01:32:28,431 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 76 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2024-06-28 01:32:28,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 101 transitions, 792 flow [2024-06-28 01:32:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 01:32:28,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45787545787545786 [2024-06-28 01:32:28,433 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 564 flow. Second operand 7 states and 125 transitions. [2024-06-28 01:32:28,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 101 transitions, 792 flow [2024-06-28 01:32:28,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 101 transitions, 777 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:28,463 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 580 flow [2024-06-28 01:32:28,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=580, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2024-06-28 01:32:28,464 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-28 01:32:28,464 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 580 flow [2024-06-28 01:32:28,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:28,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:28,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:28,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:32:28,465 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:28,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1080392487, now seen corresponding path program 2 times [2024-06-28 01:32:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:28,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782647357] [2024-06-28 01:32:28,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:29,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782647357] [2024-06-28 01:32:29,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782647357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:29,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:29,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:29,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792339351] [2024-06-28 01:32:29,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:29,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:29,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:29,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:29,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:29,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 580 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:29,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:29,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:29,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:29,703 INFO L124 PetriNetUnfolderBase]: 740/1408 cut-off events. [2024-06-28 01:32:29,704 INFO L125 PetriNetUnfolderBase]: For 7525/7531 co-relation queries the response was YES. [2024-06-28 01:32:29,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 1408 events. 740/1408 cut-off events. For 7525/7531 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7940 event pairs, 213 based on Foata normal form. 7/1372 useless extension candidates. Maximal degree in co-relation 5059. Up to 1158 conditions per place. [2024-06-28 01:32:29,714 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 74 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-28 01:32:29,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 104 transitions, 860 flow [2024-06-28 01:32:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:32:29,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2024-06-28 01:32:29,716 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 580 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:32:29,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 104 transitions, 860 flow [2024-06-28 01:32:29,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 815 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:29,730 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 590 flow [2024-06-28 01:32:29,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2024-06-28 01:32:29,731 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-28 01:32:29,731 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 590 flow [2024-06-28 01:32:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:29,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:29,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:29,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:32:29,732 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:29,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1080717987, now seen corresponding path program 3 times [2024-06-28 01:32:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:29,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797503856] [2024-06-28 01:32:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:29,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:30,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:30,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797503856] [2024-06-28 01:32:30,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797503856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:30,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:30,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:32:30,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145849943] [2024-06-28 01:32:30,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:30,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:32:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:32:30,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:32:30,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:30,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 590 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:30,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:30,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:30,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:30,926 INFO L124 PetriNetUnfolderBase]: 738/1409 cut-off events. [2024-06-28 01:32:30,927 INFO L125 PetriNetUnfolderBase]: For 8157/8163 co-relation queries the response was YES. [2024-06-28 01:32:30,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5124 conditions, 1409 events. 738/1409 cut-off events. For 8157/8163 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7941 event pairs, 217 based on Foata normal form. 7/1372 useless extension candidates. Maximal degree in co-relation 5081. Up to 1176 conditions per place. [2024-06-28 01:32:30,938 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 74 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2024-06-28 01:32:30,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 101 transitions, 806 flow [2024-06-28 01:32:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:30,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 01:32:30,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542124542124542 [2024-06-28 01:32:30,941 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 590 flow. Second operand 7 states and 124 transitions. [2024-06-28 01:32:30,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 101 transitions, 806 flow [2024-06-28 01:32:30,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 101 transitions, 751 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:30,955 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 568 flow [2024-06-28 01:32:30,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=568, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2024-06-28 01:32:30,956 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-28 01:32:30,956 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 568 flow [2024-06-28 01:32:30,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:30,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:30,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:30,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:32:30,957 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:30,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash -491373991, now seen corresponding path program 1 times [2024-06-28 01:32:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:30,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536980484] [2024-06-28 01:32:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:30,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:31,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:31,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536980484] [2024-06-28 01:32:31,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536980484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:31,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:31,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994356970] [2024-06-28 01:32:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:31,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:31,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:31,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:31,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 568 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) [2024-06-28 01:32:31,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:31,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:31,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:32,181 INFO L124 PetriNetUnfolderBase]: 729/1339 cut-off events. [2024-06-28 01:32:32,181 INFO L125 PetriNetUnfolderBase]: For 9024/9024 co-relation queries the response was YES. [2024-06-28 01:32:32,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5115 conditions, 1339 events. 729/1339 cut-off events. For 9024/9024 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7274 event pairs, 141 based on Foata normal form. 1/1310 useless extension candidates. Maximal degree in co-relation 5072. Up to 1026 conditions per place. [2024-06-28 01:32:32,192 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 86 selfloop transitions, 26 changer transitions 0/125 dead transitions. [2024-06-28 01:32:32,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 125 transitions, 964 flow [2024-06-28 01:32:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:32,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 01:32:32,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-28 01:32:32,193 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 568 flow. Second operand 8 states and 157 transitions. [2024-06-28 01:32:32,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 125 transitions, 964 flow [2024-06-28 01:32:32,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 125 transitions, 927 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:32,211 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 632 flow [2024-06-28 01:32:32,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=632, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2024-06-28 01:32:32,212 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-28 01:32:32,212 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 632 flow [2024-06-28 01:32:32,212 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) [2024-06-28 01:32:32,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:32,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:32,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:32:32,213 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:32,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:32,213 INFO L85 PathProgramCache]: Analyzing trace with hash -491224044, now seen corresponding path program 1 times [2024-06-28 01:32:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017088647] [2024-06-28 01:32:32,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:33,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017088647] [2024-06-28 01:32:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017088647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:33,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:33,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797949418] [2024-06-28 01:32:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:33,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:33,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:33,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:33,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:33,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:33,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:33,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:33,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:33,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:33,467 INFO L124 PetriNetUnfolderBase]: 815/1453 cut-off events. [2024-06-28 01:32:33,468 INFO L125 PetriNetUnfolderBase]: For 10162/10162 co-relation queries the response was YES. [2024-06-28 01:32:33,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5756 conditions, 1453 events. 815/1453 cut-off events. For 10162/10162 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7793 event pairs, 163 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 5711. Up to 1148 conditions per place. [2024-06-28 01:32:33,478 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 90 selfloop transitions, 29 changer transitions 0/126 dead transitions. [2024-06-28 01:32:33,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 126 transitions, 1032 flow [2024-06-28 01:32:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 01:32:33,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-28 01:32:33,480 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 632 flow. Second operand 8 states and 149 transitions. [2024-06-28 01:32:33,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 126 transitions, 1032 flow [2024-06-28 01:32:33,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 126 transitions, 993 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:33,496 INFO L231 Difference]: Finished difference. Result has 104 places, 94 transitions, 688 flow [2024-06-28 01:32:33,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=104, PETRI_TRANSITIONS=94} [2024-06-28 01:32:33,497 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-06-28 01:32:33,497 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 94 transitions, 688 flow [2024-06-28 01:32:33,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:33,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:33,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:33,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:32:33,498 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:33,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:33,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2099463077, now seen corresponding path program 2 times [2024-06-28 01:32:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:33,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105239519] [2024-06-28 01:32:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:33,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:34,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105239519] [2024-06-28 01:32:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105239519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:34,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:34,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:34,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51776920] [2024-06-28 01:32:34,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:34,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:34,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:34,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:34,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:34,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:34,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 94 transitions, 688 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) [2024-06-28 01:32:34,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:34,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:34,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:34,759 INFO L124 PetriNetUnfolderBase]: 762/1389 cut-off events. [2024-06-28 01:32:34,759 INFO L125 PetriNetUnfolderBase]: For 11253/11253 co-relation queries the response was YES. [2024-06-28 01:32:34,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5764 conditions, 1389 events. 762/1389 cut-off events. For 11253/11253 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7553 event pairs, 143 based on Foata normal form. 1/1359 useless extension candidates. Maximal degree in co-relation 5717. Up to 1061 conditions per place. [2024-06-28 01:32:34,771 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 87 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-28 01:32:34,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 128 transitions, 1064 flow [2024-06-28 01:32:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 01:32:34,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-28 01:32:34,773 INFO L175 Difference]: Start difference. First operand has 104 places, 94 transitions, 688 flow. Second operand 8 states and 155 transitions. [2024-06-28 01:32:34,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 128 transitions, 1064 flow [2024-06-28 01:32:34,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 128 transitions, 1025 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:34,793 INFO L231 Difference]: Finished difference. Result has 108 places, 96 transitions, 720 flow [2024-06-28 01:32:34,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=108, PETRI_TRANSITIONS=96} [2024-06-28 01:32:34,794 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-06-28 01:32:34,794 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 96 transitions, 720 flow [2024-06-28 01:32:34,795 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) [2024-06-28 01:32:34,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:34,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:34,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:32:34,795 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:34,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1757243625, now seen corresponding path program 1 times [2024-06-28 01:32:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:34,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339556127] [2024-06-28 01:32:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:34,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:35,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:35,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339556127] [2024-06-28 01:32:35,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339556127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:35,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:35,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008309260] [2024-06-28 01:32:35,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:35,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:35,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:35,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:35,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:35,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 96 transitions, 720 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) [2024-06-28 01:32:35,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:35,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:35,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:36,126 INFO L124 PetriNetUnfolderBase]: 838/1501 cut-off events. [2024-06-28 01:32:36,126 INFO L125 PetriNetUnfolderBase]: For 13124/13128 co-relation queries the response was YES. [2024-06-28 01:32:36,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6264 conditions, 1501 events. 838/1501 cut-off events. For 13124/13128 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8146 event pairs, 175 based on Foata normal form. 7/1476 useless extension candidates. Maximal degree in co-relation 6215. Up to 1169 conditions per place. [2024-06-28 01:32:36,138 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 96 selfloop transitions, 25 changer transitions 0/136 dead transitions. [2024-06-28 01:32:36,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 136 transitions, 1140 flow [2024-06-28 01:32:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:36,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 01:32:36,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-28 01:32:36,140 INFO L175 Difference]: Start difference. First operand has 108 places, 96 transitions, 720 flow. Second operand 8 states and 157 transitions. [2024-06-28 01:32:36,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 136 transitions, 1140 flow [2024-06-28 01:32:36,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 136 transitions, 1097 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:36,164 INFO L231 Difference]: Finished difference. Result has 112 places, 103 transitions, 795 flow [2024-06-28 01:32:36,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=795, PETRI_PLACES=112, PETRI_TRANSITIONS=103} [2024-06-28 01:32:36,165 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-06-28 01:32:36,165 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 103 transitions, 795 flow [2024-06-28 01:32:36,166 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) [2024-06-28 01:32:36,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:36,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:36,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:32:36,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:36,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:36,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1757243346, now seen corresponding path program 2 times [2024-06-28 01:32:36,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:36,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57948392] [2024-06-28 01:32:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:36,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:36,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:36,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57948392] [2024-06-28 01:32:36,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57948392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:36,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:36,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:36,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898970772] [2024-06-28 01:32:36,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:36,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:36,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:36,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:36,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:37,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:37,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 103 transitions, 795 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:37,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:37,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:37,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:37,441 INFO L124 PetriNetUnfolderBase]: 912/1618 cut-off events. [2024-06-28 01:32:37,441 INFO L125 PetriNetUnfolderBase]: For 14870/14870 co-relation queries the response was YES. [2024-06-28 01:32:37,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7122 conditions, 1618 events. 912/1618 cut-off events. For 14870/14870 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8826 event pairs, 178 based on Foata normal form. 1/1580 useless extension candidates. Maximal degree in co-relation 7071. Up to 1287 conditions per place. [2024-06-28 01:32:37,453 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 99 selfloop transitions, 31 changer transitions 0/137 dead transitions. [2024-06-28 01:32:37,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 137 transitions, 1269 flow [2024-06-28 01:32:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:32:37,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 01:32:37,455 INFO L175 Difference]: Start difference. First operand has 112 places, 103 transitions, 795 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:32:37,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 137 transitions, 1269 flow [2024-06-28 01:32:37,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 137 transitions, 1251 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:37,481 INFO L231 Difference]: Finished difference. Result has 117 places, 107 transitions, 876 flow [2024-06-28 01:32:37,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=876, PETRI_PLACES=117, PETRI_TRANSITIONS=107} [2024-06-28 01:32:37,481 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-28 01:32:37,482 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 107 transitions, 876 flow [2024-06-28 01:32:37,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:37,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:37,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:37,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:32:37,482 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:37,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:37,483 INFO L85 PathProgramCache]: Analyzing trace with hash -485659854, now seen corresponding path program 3 times [2024-06-28 01:32:37,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:37,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401867270] [2024-06-28 01:32:37,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:37,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:38,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401867270] [2024-06-28 01:32:38,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401867270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:38,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:38,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:38,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077821209] [2024-06-28 01:32:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:38,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:38,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:38,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:38,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:38,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:38,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 107 transitions, 876 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:38,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:38,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:38,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:38,671 INFO L124 PetriNetUnfolderBase]: 910/1615 cut-off events. [2024-06-28 01:32:38,672 INFO L125 PetriNetUnfolderBase]: For 15773/15773 co-relation queries the response was YES. [2024-06-28 01:32:38,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 1615 events. 910/1615 cut-off events. For 15773/15773 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8805 event pairs, 178 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 7163. Up to 1285 conditions per place. [2024-06-28 01:32:38,683 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 99 selfloop transitions, 30 changer transitions 0/136 dead transitions. [2024-06-28 01:32:38,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 136 transitions, 1274 flow [2024-06-28 01:32:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:38,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 01:32:38,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 01:32:38,685 INFO L175 Difference]: Start difference. First operand has 117 places, 107 transitions, 876 flow. Second operand 8 states and 148 transitions. [2024-06-28 01:32:38,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 136 transitions, 1274 flow [2024-06-28 01:32:38,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 136 transitions, 1220 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:38,709 INFO L231 Difference]: Finished difference. Result has 121 places, 107 transitions, 887 flow [2024-06-28 01:32:38,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=887, PETRI_PLACES=121, PETRI_TRANSITIONS=107} [2024-06-28 01:32:38,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-28 01:32:38,710 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 107 transitions, 887 flow [2024-06-28 01:32:38,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:38,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:38,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:38,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:32:38,710 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:38,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1757235689, now seen corresponding path program 3 times [2024-06-28 01:32:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552232702] [2024-06-28 01:32:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:38,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:39,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:39,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552232702] [2024-06-28 01:32:39,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552232702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:39,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:39,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:39,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489102001] [2024-06-28 01:32:39,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:39,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:39,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:39,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:39,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:39,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 107 transitions, 887 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) [2024-06-28 01:32:39,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:39,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:39,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:39,891 INFO L124 PetriNetUnfolderBase]: 853/1570 cut-off events. [2024-06-28 01:32:39,892 INFO L125 PetriNetUnfolderBase]: For 17185/17185 co-relation queries the response was YES. [2024-06-28 01:32:39,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7043 conditions, 1570 events. 853/1570 cut-off events. For 17185/17185 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8830 event pairs, 164 based on Foata normal form. 1/1530 useless extension candidates. Maximal degree in co-relation 6988. Up to 1189 conditions per place. [2024-06-28 01:32:39,903 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 94 selfloop transitions, 27 changer transitions 0/138 dead transitions. [2024-06-28 01:32:39,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 138 transitions, 1287 flow [2024-06-28 01:32:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 01:32:39,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-28 01:32:39,905 INFO L175 Difference]: Start difference. First operand has 121 places, 107 transitions, 887 flow. Second operand 8 states and 153 transitions. [2024-06-28 01:32:39,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 138 transitions, 1287 flow [2024-06-28 01:32:39,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 138 transitions, 1221 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:39,927 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 896 flow [2024-06-28 01:32:39,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=896, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-28 01:32:39,928 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2024-06-28 01:32:39,928 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 896 flow [2024-06-28 01:32:39,928 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) [2024-06-28 01:32:39,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:39,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:39,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:32:39,929 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:39,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:39,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1807574661, now seen corresponding path program 2 times [2024-06-28 01:32:39,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:39,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016667883] [2024-06-28 01:32:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:39,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:40,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016667883] [2024-06-28 01:32:40,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016667883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:40,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:40,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:40,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598675753] [2024-06-28 01:32:40,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:40,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:40,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:40,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:40,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 896 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) [2024-06-28 01:32:40,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:40,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:40,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:41,126 INFO L124 PetriNetUnfolderBase]: 893/1626 cut-off events. [2024-06-28 01:32:41,126 INFO L125 PetriNetUnfolderBase]: For 18973/18981 co-relation queries the response was YES. [2024-06-28 01:32:41,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7233 conditions, 1626 events. 893/1626 cut-off events. For 18973/18981 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9205 event pairs, 241 based on Foata normal form. 11/1599 useless extension candidates. Maximal degree in co-relation 7177. Up to 1370 conditions per place. [2024-06-28 01:32:41,137 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 98 selfloop transitions, 17 changer transitions 0/132 dead transitions. [2024-06-28 01:32:41,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 132 transitions, 1198 flow [2024-06-28 01:32:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:32:41,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 01:32:41,138 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 896 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:32:41,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 132 transitions, 1198 flow [2024-06-28 01:32:41,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 132 transitions, 1154 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:41,166 INFO L231 Difference]: Finished difference. Result has 125 places, 111 transitions, 913 flow [2024-06-28 01:32:41,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=913, PETRI_PLACES=125, PETRI_TRANSITIONS=111} [2024-06-28 01:32:41,167 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 82 predicate places. [2024-06-28 01:32:41,167 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 111 transitions, 913 flow [2024-06-28 01:32:41,167 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) [2024-06-28 01:32:41,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:41,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:41,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:32:41,168 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:41,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:41,168 INFO L85 PathProgramCache]: Analyzing trace with hash -867578343, now seen corresponding path program 4 times [2024-06-28 01:32:41,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:41,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212086086] [2024-06-28 01:32:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:41,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:41,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:41,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212086086] [2024-06-28 01:32:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212086086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:41,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:41,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:41,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940900598] [2024-06-28 01:32:41,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:41,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:41,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:42,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:42,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 111 transitions, 913 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) [2024-06-28 01:32:42,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:42,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:42,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:42,454 INFO L124 PetriNetUnfolderBase]: 882/1641 cut-off events. [2024-06-28 01:32:42,454 INFO L125 PetriNetUnfolderBase]: For 19860/19862 co-relation queries the response was YES. [2024-06-28 01:32:42,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 1641 events. 882/1641 cut-off events. For 19860/19862 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9475 event pairs, 223 based on Foata normal form. 1/1597 useless extension candidates. Maximal degree in co-relation 7267. Up to 1354 conditions per place. [2024-06-28 01:32:42,464 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 101 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2024-06-28 01:32:42,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 134 transitions, 1219 flow [2024-06-28 01:32:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:32:42,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 01:32:42,465 INFO L175 Difference]: Start difference. First operand has 125 places, 111 transitions, 913 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:32:42,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 134 transitions, 1219 flow [2024-06-28 01:32:42,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 1163 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:42,487 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 894 flow [2024-06-28 01:32:42,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=894, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2024-06-28 01:32:42,488 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-28 01:32:42,488 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 894 flow [2024-06-28 01:32:42,488 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) [2024-06-28 01:32:42,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:42,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:42,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:32:42,488 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:42,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash -867578126, now seen corresponding path program 4 times [2024-06-28 01:32:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486549984] [2024-06-28 01:32:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:42,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:43,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:43,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486549984] [2024-06-28 01:32:43,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486549984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:43,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:43,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:43,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349464152] [2024-06-28 01:32:43,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:43,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:43,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:43,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:43,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 894 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:43,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:43,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:43,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:43,653 INFO L124 PetriNetUnfolderBase]: 963/1709 cut-off events. [2024-06-28 01:32:43,653 INFO L125 PetriNetUnfolderBase]: For 20717/20717 co-relation queries the response was YES. [2024-06-28 01:32:43,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7662 conditions, 1709 events. 963/1709 cut-off events. For 20717/20717 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9444 event pairs, 243 based on Foata normal form. 1/1672 useless extension candidates. Maximal degree in co-relation 7605. Up to 1471 conditions per place. [2024-06-28 01:32:43,663 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 108 selfloop transitions, 22 changer transitions 0/137 dead transitions. [2024-06-28 01:32:43,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 1298 flow [2024-06-28 01:32:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:43,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 01:32:43,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-28 01:32:43,664 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 894 flow. Second operand 8 states and 139 transitions. [2024-06-28 01:32:43,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 1298 flow [2024-06-28 01:32:43,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 137 transitions, 1267 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:43,684 INFO L231 Difference]: Finished difference. Result has 129 places, 113 transitions, 930 flow [2024-06-28 01:32:43,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=930, PETRI_PLACES=129, PETRI_TRANSITIONS=113} [2024-06-28 01:32:43,685 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2024-06-28 01:32:43,685 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 113 transitions, 930 flow [2024-06-28 01:32:43,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:43,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:43,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:43,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:32:43,686 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:43,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:43,686 INFO L85 PathProgramCache]: Analyzing trace with hash -867570407, now seen corresponding path program 3 times [2024-06-28 01:32:43,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:43,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061487754] [2024-06-28 01:32:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:43,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:44,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:44,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061487754] [2024-06-28 01:32:44,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061487754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:44,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:44,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642724440] [2024-06-28 01:32:44,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:44,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:44,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:44,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:44,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 113 transitions, 930 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) [2024-06-28 01:32:44,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:44,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:44,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:44,945 INFO L124 PetriNetUnfolderBase]: 933/1697 cut-off events. [2024-06-28 01:32:44,945 INFO L125 PetriNetUnfolderBase]: For 22924/22930 co-relation queries the response was YES. [2024-06-28 01:32:44,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7608 conditions, 1697 events. 933/1697 cut-off events. For 22924/22930 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9675 event pairs, 237 based on Foata normal form. 9/1666 useless extension candidates. Maximal degree in co-relation 7550. Up to 1329 conditions per place. [2024-06-28 01:32:44,954 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 101 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2024-06-28 01:32:44,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 143 transitions, 1342 flow [2024-06-28 01:32:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 01:32:44,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-28 01:32:44,957 INFO L175 Difference]: Start difference. First operand has 129 places, 113 transitions, 930 flow. Second operand 8 states and 151 transitions. [2024-06-28 01:32:44,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 143 transitions, 1342 flow [2024-06-28 01:32:44,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 143 transitions, 1266 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:44,978 INFO L231 Difference]: Finished difference. Result has 130 places, 115 transitions, 929 flow [2024-06-28 01:32:44,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=929, PETRI_PLACES=130, PETRI_TRANSITIONS=115} [2024-06-28 01:32:44,978 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-28 01:32:44,979 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 115 transitions, 929 flow [2024-06-28 01:32:44,979 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) [2024-06-28 01:32:44,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:44,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:44,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:32:44,979 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:44,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash -857480186, now seen corresponding path program 5 times [2024-06-28 01:32:44,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:44,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137489618] [2024-06-28 01:32:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137489618] [2024-06-28 01:32:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137489618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:45,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:45,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:45,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189112216] [2024-06-28 01:32:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:45,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:45,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:45,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 115 transitions, 929 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:45,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:45,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:45,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:46,181 INFO L124 PetriNetUnfolderBase]: 1007/1793 cut-off events. [2024-06-28 01:32:46,181 INFO L125 PetriNetUnfolderBase]: For 23982/23982 co-relation queries the response was YES. [2024-06-28 01:32:46,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8146 conditions, 1793 events. 1007/1793 cut-off events. For 23982/23982 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10105 event pairs, 257 based on Foata normal form. 1/1752 useless extension candidates. Maximal degree in co-relation 8087. Up to 1588 conditions per place. [2024-06-28 01:32:46,191 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 115 selfloop transitions, 16 changer transitions 0/138 dead transitions. [2024-06-28 01:32:46,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 138 transitions, 1265 flow [2024-06-28 01:32:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:32:46,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42948717948717946 [2024-06-28 01:32:46,197 INFO L175 Difference]: Start difference. First operand has 130 places, 115 transitions, 929 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:32:46,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 138 transitions, 1265 flow [2024-06-28 01:32:46,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 138 transitions, 1198 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:46,230 INFO L231 Difference]: Finished difference. Result has 132 places, 117 transitions, 917 flow [2024-06-28 01:32:46,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=917, PETRI_PLACES=132, PETRI_TRANSITIONS=117} [2024-06-28 01:32:46,230 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-28 01:32:46,230 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 117 transitions, 917 flow [2024-06-28 01:32:46,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:46,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:46,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:46,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:32:46,231 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:46,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash -867570686, now seen corresponding path program 6 times [2024-06-28 01:32:46,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641705992] [2024-06-28 01:32:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:46,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:46,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641705992] [2024-06-28 01:32:46,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641705992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:46,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:46,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:46,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119653624] [2024-06-28 01:32:46,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:46,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:46,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:46,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:46,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:46,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:46,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 117 transitions, 917 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:46,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:46,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:46,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:47,374 INFO L124 PetriNetUnfolderBase]: 1005/1782 cut-off events. [2024-06-28 01:32:47,374 INFO L125 PetriNetUnfolderBase]: For 24165/24165 co-relation queries the response was YES. [2024-06-28 01:32:47,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7965 conditions, 1782 events. 1005/1782 cut-off events. For 24165/24165 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9980 event pairs, 249 based on Foata normal form. 1/1743 useless extension candidates. Maximal degree in co-relation 7905. Up to 1532 conditions per place. [2024-06-28 01:32:47,385 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 110 selfloop transitions, 23 changer transitions 0/140 dead transitions. [2024-06-28 01:32:47,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 140 transitions, 1255 flow [2024-06-28 01:32:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 01:32:47,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-28 01:32:47,386 INFO L175 Difference]: Start difference. First operand has 132 places, 117 transitions, 917 flow. Second operand 8 states and 139 transitions. [2024-06-28 01:32:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 140 transitions, 1255 flow [2024-06-28 01:32:47,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 140 transitions, 1216 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:47,410 INFO L231 Difference]: Finished difference. Result has 134 places, 117 transitions, 929 flow [2024-06-28 01:32:47,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=929, PETRI_PLACES=134, PETRI_TRANSITIONS=117} [2024-06-28 01:32:47,411 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-28 01:32:47,411 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 117 transitions, 929 flow [2024-06-28 01:32:47,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:47,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:47,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:47,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:32:47,411 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:47,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:47,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1804956691, now seen corresponding path program 4 times [2024-06-28 01:32:47,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:47,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682142825] [2024-06-28 01:32:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:47,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:48,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:48,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682142825] [2024-06-28 01:32:48,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682142825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:48,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:48,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:48,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3416074] [2024-06-28 01:32:48,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:48,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:48,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:48,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:48,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 117 transitions, 929 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) [2024-06-28 01:32:48,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:48,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:48,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:48,654 INFO L124 PetriNetUnfolderBase]: 934/1700 cut-off events. [2024-06-28 01:32:48,654 INFO L125 PetriNetUnfolderBase]: For 24870/24876 co-relation queries the response was YES. [2024-06-28 01:32:48,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7506 conditions, 1700 events. 934/1700 cut-off events. For 24870/24876 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9750 event pairs, 241 based on Foata normal form. 9/1669 useless extension candidates. Maximal degree in co-relation 7445. Up to 1387 conditions per place. [2024-06-28 01:32:48,665 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 102 selfloop transitions, 21 changer transitions 0/142 dead transitions. [2024-06-28 01:32:48,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 142 transitions, 1247 flow [2024-06-28 01:32:48,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:32:48,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2024-06-28 01:32:48,666 INFO L175 Difference]: Start difference. First operand has 134 places, 117 transitions, 929 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:32:48,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 142 transitions, 1247 flow [2024-06-28 01:32:48,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 142 transitions, 1185 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:48,693 INFO L231 Difference]: Finished difference. Result has 136 places, 117 transitions, 914 flow [2024-06-28 01:32:48,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=914, PETRI_PLACES=136, PETRI_TRANSITIONS=117} [2024-06-28 01:32:48,694 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-28 01:32:48,694 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 117 transitions, 914 flow [2024-06-28 01:32:48,694 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) [2024-06-28 01:32:48,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:48,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:48,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:32:48,695 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:48,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:48,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1947156140, now seen corresponding path program 1 times [2024-06-28 01:32:48,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:48,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372792458] [2024-06-28 01:32:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:49,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:49,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:49,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372792458] [2024-06-28 01:32:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372792458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:49,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:49,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108337913] [2024-06-28 01:32:49,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:49,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:49,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:49,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:49,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 117 transitions, 914 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) [2024-06-28 01:32:49,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:49,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:49,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:50,175 INFO L124 PetriNetUnfolderBase]: 932/1734 cut-off events. [2024-06-28 01:32:50,175 INFO L125 PetriNetUnfolderBase]: For 25613/25613 co-relation queries the response was YES. [2024-06-28 01:32:50,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 1734 events. 932/1734 cut-off events. For 25613/25613 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10130 event pairs, 173 based on Foata normal form. 1/1682 useless extension candidates. Maximal degree in co-relation 7622. Up to 1385 conditions per place. [2024-06-28 01:32:50,186 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 126 selfloop transitions, 16 changer transitions 0/161 dead transitions. [2024-06-28 01:32:50,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 161 transitions, 1356 flow [2024-06-28 01:32:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 01:32:50,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-28 01:32:50,187 INFO L175 Difference]: Start difference. First operand has 136 places, 117 transitions, 914 flow. Second operand 9 states and 172 transitions. [2024-06-28 01:32:50,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 161 transitions, 1356 flow [2024-06-28 01:32:50,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 161 transitions, 1299 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:50,222 INFO L231 Difference]: Finished difference. Result has 137 places, 119 transitions, 914 flow [2024-06-28 01:32:50,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=914, PETRI_PLACES=137, PETRI_TRANSITIONS=119} [2024-06-28 01:32:50,222 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2024-06-28 01:32:50,222 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 119 transitions, 914 flow [2024-06-28 01:32:50,223 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) [2024-06-28 01:32:50,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:50,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:50,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:32:50,223 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:50,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:50,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1537399362, now seen corresponding path program 2 times [2024-06-28 01:32:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:50,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17226654] [2024-06-28 01:32:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:50,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:51,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:51,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17226654] [2024-06-28 01:32:51,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17226654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:51,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:51,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:51,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676385866] [2024-06-28 01:32:51,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:51,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:51,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:51,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:51,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:51,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:51,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 119 transitions, 914 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) [2024-06-28 01:32:51,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:51,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:51,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:51,494 INFO L124 PetriNetUnfolderBase]: 946/1740 cut-off events. [2024-06-28 01:32:51,494 INFO L125 PetriNetUnfolderBase]: For 26918/26918 co-relation queries the response was YES. [2024-06-28 01:32:51,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7843 conditions, 1740 events. 946/1740 cut-off events. For 26918/26918 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10079 event pairs, 160 based on Foata normal form. 1/1692 useless extension candidates. Maximal degree in co-relation 7780. Up to 1266 conditions per place. [2024-06-28 01:32:51,506 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 110 selfloop transitions, 34 changer transitions 0/163 dead transitions. [2024-06-28 01:32:51,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 163 transitions, 1440 flow [2024-06-28 01:32:51,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 01:32:51,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2024-06-28 01:32:51,508 INFO L175 Difference]: Start difference. First operand has 137 places, 119 transitions, 914 flow. Second operand 9 states and 176 transitions. [2024-06-28 01:32:51,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 163 transitions, 1440 flow [2024-06-28 01:32:51,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 163 transitions, 1366 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:51,552 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 957 flow [2024-06-28 01:32:51,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=957, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-06-28 01:32:51,553 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 94 predicate places. [2024-06-28 01:32:51,553 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 957 flow [2024-06-28 01:32:51,553 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) [2024-06-28 01:32:51,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:51,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:51,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:32:51,554 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:51,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:51,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1537399176, now seen corresponding path program 1 times [2024-06-28 01:32:51,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:51,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28550732] [2024-06-28 01:32:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:51,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:52,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:52,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28550732] [2024-06-28 01:32:52,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28550732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:52,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:52,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:52,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703767046] [2024-06-28 01:32:52,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:52,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:52,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:52,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:52,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:52,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:52,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 957 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:52,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:52,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:52,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:52,807 INFO L124 PetriNetUnfolderBase]: 1038/1828 cut-off events. [2024-06-28 01:32:52,807 INFO L125 PetriNetUnfolderBase]: For 28602/28602 co-relation queries the response was YES. [2024-06-28 01:32:52,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 1828 events. 1038/1828 cut-off events. For 28602/28602 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10231 event pairs, 174 based on Foata normal form. 1/1785 useless extension candidates. Maximal degree in co-relation 8351. Up to 1343 conditions per place. [2024-06-28 01:32:52,816 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 114 selfloop transitions, 46 changer transitions 0/167 dead transitions. [2024-06-28 01:32:52,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 167 transitions, 1505 flow [2024-06-28 01:32:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:32:52,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-28 01:32:52,818 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 957 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:32:52,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 167 transitions, 1505 flow [2024-06-28 01:32:52,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 167 transitions, 1452 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:52,858 INFO L231 Difference]: Finished difference. Result has 141 places, 127 transitions, 1033 flow [2024-06-28 01:32:52,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1033, PETRI_PLACES=141, PETRI_TRANSITIONS=127} [2024-06-28 01:32:52,858 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 01:32:52,858 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 127 transitions, 1033 flow [2024-06-28 01:32:52,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:52,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:52,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:32:52,859 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:52,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:52,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1532757546, now seen corresponding path program 2 times [2024-06-28 01:32:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627052332] [2024-06-28 01:32:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:52,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:53,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:53,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627052332] [2024-06-28 01:32:53,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627052332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:53,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:53,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:53,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531248291] [2024-06-28 01:32:53,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:53,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:53,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:53,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:53,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:53,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:53,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 127 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:53,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:53,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:53,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:54,055 INFO L124 PetriNetUnfolderBase]: 1062/1901 cut-off events. [2024-06-28 01:32:54,056 INFO L125 PetriNetUnfolderBase]: For 30997/30997 co-relation queries the response was YES. [2024-06-28 01:32:54,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8933 conditions, 1901 events. 1062/1901 cut-off events. For 30997/30997 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10946 event pairs, 180 based on Foata normal form. 1/1846 useless extension candidates. Maximal degree in co-relation 8867. Up to 1369 conditions per place. [2024-06-28 01:32:54,066 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 119 selfloop transitions, 43 changer transitions 0/169 dead transitions. [2024-06-28 01:32:54,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 169 transitions, 1655 flow [2024-06-28 01:32:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:32:54,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-28 01:32:54,067 INFO L175 Difference]: Start difference. First operand has 141 places, 127 transitions, 1033 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:32:54,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 169 transitions, 1655 flow [2024-06-28 01:32:54,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 169 transitions, 1584 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:54,106 INFO L231 Difference]: Finished difference. Result has 145 places, 131 transitions, 1089 flow [2024-06-28 01:32:54,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1089, PETRI_PLACES=145, PETRI_TRANSITIONS=131} [2024-06-28 01:32:54,106 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 102 predicate places. [2024-06-28 01:32:54,107 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 131 transitions, 1089 flow [2024-06-28 01:32:54,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:54,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:54,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:54,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:32:54,107 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:54,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1951917740, now seen corresponding path program 3 times [2024-06-28 01:32:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:54,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597654732] [2024-06-28 01:32:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:54,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:54,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597654732] [2024-06-28 01:32:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597654732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:54,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366765976] [2024-06-28 01:32:54,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:54,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:54,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:32:54,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 131 transitions, 1089 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) [2024-06-28 01:32:54,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:54,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:32:54,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:55,371 INFO L124 PetriNetUnfolderBase]: 997/1815 cut-off events. [2024-06-28 01:32:55,372 INFO L125 PetriNetUnfolderBase]: For 32687/32687 co-relation queries the response was YES. [2024-06-28 01:32:55,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8764 conditions, 1815 events. 997/1815 cut-off events. For 32687/32687 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10526 event pairs, 161 based on Foata normal form. 1/1768 useless extension candidates. Maximal degree in co-relation 8696. Up to 1321 conditions per place. [2024-06-28 01:32:55,384 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 113 selfloop transitions, 34 changer transitions 0/170 dead transitions. [2024-06-28 01:32:55,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 170 transitions, 1597 flow [2024-06-28 01:32:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 01:32:55,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-28 01:32:55,385 INFO L175 Difference]: Start difference. First operand has 145 places, 131 transitions, 1089 flow. Second operand 9 states and 174 transitions. [2024-06-28 01:32:55,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 170 transitions, 1597 flow [2024-06-28 01:32:55,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 170 transitions, 1530 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:55,434 INFO L231 Difference]: Finished difference. Result has 149 places, 133 transitions, 1115 flow [2024-06-28 01:32:55,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1115, PETRI_PLACES=149, PETRI_TRANSITIONS=133} [2024-06-28 01:32:55,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2024-06-28 01:32:55,434 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 133 transitions, 1115 flow [2024-06-28 01:32:55,434 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) [2024-06-28 01:32:55,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:55,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:55,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:32:55,435 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:55,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1951924436, now seen corresponding path program 3 times [2024-06-28 01:32:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171422655] [2024-06-28 01:32:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:55,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171422655] [2024-06-28 01:32:56,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171422655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:56,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866459975] [2024-06-28 01:32:56,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:56,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:56,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:56,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:56,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 133 transitions, 1115 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:56,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:56,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:56,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:56,734 INFO L124 PetriNetUnfolderBase]: 1071/1918 cut-off events. [2024-06-28 01:32:56,734 INFO L125 PetriNetUnfolderBase]: For 33788/33788 co-relation queries the response was YES. [2024-06-28 01:32:56,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9178 conditions, 1918 events. 1071/1918 cut-off events. For 33788/33788 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11078 event pairs, 180 based on Foata normal form. 1/1862 useless extension candidates. Maximal degree in co-relation 9109. Up to 1384 conditions per place. [2024-06-28 01:32:56,748 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 119 selfloop transitions, 44 changer transitions 0/170 dead transitions. [2024-06-28 01:32:56,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 170 transitions, 1637 flow [2024-06-28 01:32:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:32:56,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-28 01:32:56,750 INFO L175 Difference]: Start difference. First operand has 149 places, 133 transitions, 1115 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:32:56,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 170 transitions, 1637 flow [2024-06-28 01:32:56,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 170 transitions, 1571 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:56,799 INFO L231 Difference]: Finished difference. Result has 152 places, 133 transitions, 1142 flow [2024-06-28 01:32:56,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1142, PETRI_PLACES=152, PETRI_TRANSITIONS=133} [2024-06-28 01:32:56,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-28 01:32:56,799 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 133 transitions, 1142 flow [2024-06-28 01:32:56,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:56,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:56,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:56,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:32:56,800 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:56,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1951924684, now seen corresponding path program 1 times [2024-06-28 01:32:56,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:56,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369282397] [2024-06-28 01:32:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:56,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:57,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:57,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369282397] [2024-06-28 01:32:57,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369282397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:57,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:57,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:57,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442914144] [2024-06-28 01:32:57,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:57,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:57,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:57,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:57,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:57,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:57,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 133 transitions, 1142 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:57,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:57,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:57,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:58,051 INFO L124 PetriNetUnfolderBase]: 1133/2008 cut-off events. [2024-06-28 01:32:58,051 INFO L125 PetriNetUnfolderBase]: For 38688/38688 co-relation queries the response was YES. [2024-06-28 01:32:58,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9724 conditions, 2008 events. 1133/2008 cut-off events. For 38688/38688 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11537 event pairs, 211 based on Foata normal form. 3/1957 useless extension candidates. Maximal degree in co-relation 9654. Up to 1318 conditions per place. [2024-06-28 01:32:58,065 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 130 selfloop transitions, 43 changer transitions 0/180 dead transitions. [2024-06-28 01:32:58,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 180 transitions, 1736 flow [2024-06-28 01:32:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 01:32:58,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-28 01:32:58,066 INFO L175 Difference]: Start difference. First operand has 152 places, 133 transitions, 1142 flow. Second operand 9 states and 174 transitions. [2024-06-28 01:32:58,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 180 transitions, 1736 flow [2024-06-28 01:32:58,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 180 transitions, 1643 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:58,117 INFO L231 Difference]: Finished difference. Result has 153 places, 137 transitions, 1176 flow [2024-06-28 01:32:58,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1176, PETRI_PLACES=153, PETRI_TRANSITIONS=137} [2024-06-28 01:32:58,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-28 01:32:58,117 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 137 transitions, 1176 flow [2024-06-28 01:32:58,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:58,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:58,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:32:58,118 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:58,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1360030258, now seen corresponding path program 2 times [2024-06-28 01:32:58,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529246822] [2024-06-28 01:32:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:58,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:58,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529246822] [2024-06-28 01:32:58,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529246822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:58,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:58,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:58,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255349781] [2024-06-28 01:32:58,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:58,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:58,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:58,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:32:58,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 137 transitions, 1176 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:58,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:58,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:32:58,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:59,465 INFO L124 PetriNetUnfolderBase]: 1450/2538 cut-off events. [2024-06-28 01:32:59,465 INFO L125 PetriNetUnfolderBase]: For 49481/49481 co-relation queries the response was YES. [2024-06-28 01:32:59,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12744 conditions, 2538 events. 1450/2538 cut-off events. For 49481/49481 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15094 event pairs, 327 based on Foata normal form. 3/2481 useless extension candidates. Maximal degree in co-relation 12673. Up to 1725 conditions per place. [2024-06-28 01:32:59,483 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 157 selfloop transitions, 45 changer transitions 0/209 dead transitions. [2024-06-28 01:32:59,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 209 transitions, 2253 flow [2024-06-28 01:32:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:59,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:32:59,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 01:32:59,484 INFO L175 Difference]: Start difference. First operand has 153 places, 137 transitions, 1176 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:32:59,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 209 transitions, 2253 flow [2024-06-28 01:32:59,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 209 transitions, 2170 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:59,551 INFO L231 Difference]: Finished difference. Result has 162 places, 162 transitions, 1524 flow [2024-06-28 01:32:59,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1524, PETRI_PLACES=162, PETRI_TRANSITIONS=162} [2024-06-28 01:32:59,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2024-06-28 01:32:59,552 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 162 transitions, 1524 flow [2024-06-28 01:32:59,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:32:59,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:59,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:59,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:32:59,552 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:59,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2124653584, now seen corresponding path program 3 times [2024-06-28 01:32:59,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:59,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885704224] [2024-06-28 01:32:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:59,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:00,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885704224] [2024-06-28 01:33:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885704224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:00,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:00,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:00,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866730680] [2024-06-28 01:33:00,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:00,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:00,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:00,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:00,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:00,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 162 transitions, 1524 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:00,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:00,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:00,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:00,879 INFO L124 PetriNetUnfolderBase]: 1477/2530 cut-off events. [2024-06-28 01:33:00,880 INFO L125 PetriNetUnfolderBase]: For 52183/52183 co-relation queries the response was YES. [2024-06-28 01:33:00,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13335 conditions, 2530 events. 1477/2530 cut-off events. For 52183/52183 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14699 event pairs, 235 based on Foata normal form. 6/2488 useless extension candidates. Maximal degree in co-relation 13258. Up to 1513 conditions per place. [2024-06-28 01:33:00,902 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 132 selfloop transitions, 66 changer transitions 0/205 dead transitions. [2024-06-28 01:33:00,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 205 transitions, 2232 flow [2024-06-28 01:33:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 01:33:00,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-28 01:33:00,903 INFO L175 Difference]: Start difference. First operand has 162 places, 162 transitions, 1524 flow. Second operand 9 states and 173 transitions. [2024-06-28 01:33:00,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 205 transitions, 2232 flow [2024-06-28 01:33:01,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 205 transitions, 2195 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:01,013 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 1649 flow [2024-06-28 01:33:01,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1649, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2024-06-28 01:33:01,014 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 125 predicate places. [2024-06-28 01:33:01,014 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 1649 flow [2024-06-28 01:33:01,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:01,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:01,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:01,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:33:01,015 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:01,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash -652351854, now seen corresponding path program 4 times [2024-06-28 01:33:01,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:01,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418895902] [2024-06-28 01:33:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:01,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:01,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:01,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418895902] [2024-06-28 01:33:01,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418895902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:01,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:01,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:01,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772372243] [2024-06-28 01:33:01,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:01,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:01,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:01,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:01,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 1649 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:01,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:01,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:01,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:02,296 INFO L124 PetriNetUnfolderBase]: 1501/2662 cut-off events. [2024-06-28 01:33:02,297 INFO L125 PetriNetUnfolderBase]: For 52135/52135 co-relation queries the response was YES. [2024-06-28 01:33:02,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14044 conditions, 2662 events. 1501/2662 cut-off events. For 52135/52135 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16129 event pairs, 268 based on Foata normal form. 1/2585 useless extension candidates. Maximal degree in co-relation 13965. Up to 1905 conditions per place. [2024-06-28 01:33:02,318 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 141 selfloop transitions, 55 changer transitions 0/203 dead transitions. [2024-06-28 01:33:02,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 203 transitions, 2349 flow [2024-06-28 01:33:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:33:02,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757834757834758 [2024-06-28 01:33:02,319 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 1649 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:33:02,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 203 transitions, 2349 flow [2024-06-28 01:33:02,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 203 transitions, 2222 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:02,449 INFO L231 Difference]: Finished difference. Result has 171 places, 168 transitions, 1670 flow [2024-06-28 01:33:02,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1670, PETRI_PLACES=171, PETRI_TRANSITIONS=168} [2024-06-28 01:33:02,449 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-28 01:33:02,450 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 168 transitions, 1670 flow [2024-06-28 01:33:02,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:02,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:02,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:33:02,450 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:02,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:02,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1360267842, now seen corresponding path program 4 times [2024-06-28 01:33:02,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:02,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402567975] [2024-06-28 01:33:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:02,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:03,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:03,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402567975] [2024-06-28 01:33:03,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402567975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:03,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:03,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:03,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095175901] [2024-06-28 01:33:03,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:03,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:03,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:03,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:03,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:03,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:33:03,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 168 transitions, 1670 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) [2024-06-28 01:33:03,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:03,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:33:03,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:03,741 INFO L124 PetriNetUnfolderBase]: 1411/2578 cut-off events. [2024-06-28 01:33:03,741 INFO L125 PetriNetUnfolderBase]: For 53984/53985 co-relation queries the response was YES. [2024-06-28 01:33:03,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13380 conditions, 2578 events. 1411/2578 cut-off events. For 53984/53985 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15979 event pairs, 258 based on Foata normal form. 2/2499 useless extension candidates. Maximal degree in co-relation 13300. Up to 1864 conditions per place. [2024-06-28 01:33:03,761 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 137 selfloop transitions, 41 changer transitions 0/204 dead transitions. [2024-06-28 01:33:03,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 204 transitions, 2244 flow [2024-06-28 01:33:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 01:33:03,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-28 01:33:03,762 INFO L175 Difference]: Start difference. First operand has 171 places, 168 transitions, 1670 flow. Second operand 9 states and 172 transitions. [2024-06-28 01:33:03,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 204 transitions, 2244 flow [2024-06-28 01:33:03,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 204 transitions, 2168 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:03,879 INFO L231 Difference]: Finished difference. Result has 175 places, 170 transitions, 1703 flow [2024-06-28 01:33:03,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1703, PETRI_PLACES=175, PETRI_TRANSITIONS=170} [2024-06-28 01:33:03,880 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-28 01:33:03,880 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 170 transitions, 1703 flow [2024-06-28 01:33:03,880 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) [2024-06-28 01:33:03,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:03,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:03,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:33:03,881 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:03,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1360261146, now seen corresponding path program 5 times [2024-06-28 01:33:03,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:03,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804873397] [2024-06-28 01:33:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:03,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804873397] [2024-06-28 01:33:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804873397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:04,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12442501] [2024-06-28 01:33:04,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:04,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:04,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:04,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:04,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 170 transitions, 1703 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:04,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:04,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:04,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:05,163 INFO L124 PetriNetUnfolderBase]: 1523/2696 cut-off events. [2024-06-28 01:33:05,163 INFO L125 PetriNetUnfolderBase]: For 56437/56437 co-relation queries the response was YES. [2024-06-28 01:33:05,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13994 conditions, 2696 events. 1523/2696 cut-off events. For 56437/56437 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16356 event pairs, 252 based on Foata normal form. 1/2618 useless extension candidates. Maximal degree in co-relation 13913. Up to 1934 conditions per place. [2024-06-28 01:33:05,185 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 148 selfloop transitions, 52 changer transitions 0/207 dead transitions. [2024-06-28 01:33:05,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 207 transitions, 2401 flow [2024-06-28 01:33:05,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:05,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:33:05,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:33:05,186 INFO L175 Difference]: Start difference. First operand has 175 places, 170 transitions, 1703 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:33:05,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 207 transitions, 2401 flow [2024-06-28 01:33:05,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 207 transitions, 2325 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:05,316 INFO L231 Difference]: Finished difference. Result has 178 places, 172 transitions, 1751 flow [2024-06-28 01:33:05,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1751, PETRI_PLACES=178, PETRI_TRANSITIONS=172} [2024-06-28 01:33:05,317 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-28 01:33:05,317 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 172 transitions, 1751 flow [2024-06-28 01:33:05,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:05,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:05,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:05,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:33:05,317 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:05,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:05,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2124407816, now seen corresponding path program 6 times [2024-06-28 01:33:05,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:05,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412271433] [2024-06-28 01:33:05,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:05,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:06,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:06,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412271433] [2024-06-28 01:33:06,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412271433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:06,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:06,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:06,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252782228] [2024-06-28 01:33:06,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:06,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:06,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:06,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:06,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 172 transitions, 1751 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:06,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:06,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:06,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:06,590 INFO L124 PetriNetUnfolderBase]: 1521/2693 cut-off events. [2024-06-28 01:33:06,590 INFO L125 PetriNetUnfolderBase]: For 58036/58036 co-relation queries the response was YES. [2024-06-28 01:33:06,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14067 conditions, 2693 events. 1521/2693 cut-off events. For 58036/58036 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 16326 event pairs, 265 based on Foata normal form. 1/2615 useless extension candidates. Maximal degree in co-relation 13985. Up to 1932 conditions per place. [2024-06-28 01:33:06,611 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 145 selfloop transitions, 54 changer transitions 0/206 dead transitions. [2024-06-28 01:33:06,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 206 transitions, 2349 flow [2024-06-28 01:33:06,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:33:06,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4757834757834758 [2024-06-28 01:33:06,612 INFO L175 Difference]: Start difference. First operand has 178 places, 172 transitions, 1751 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:33:06,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 206 transitions, 2349 flow [2024-06-28 01:33:06,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 206 transitions, 2229 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:06,725 INFO L231 Difference]: Finished difference. Result has 180 places, 172 transitions, 1744 flow [2024-06-28 01:33:06,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1744, PETRI_PLACES=180, PETRI_TRANSITIONS=172} [2024-06-28 01:33:06,726 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-28 01:33:06,726 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 172 transitions, 1744 flow [2024-06-28 01:33:06,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:06,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:06,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:06,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:33:06,726 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:06,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2124414574, now seen corresponding path program 4 times [2024-06-28 01:33:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025811583] [2024-06-28 01:33:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:06,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:07,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025811583] [2024-06-28 01:33:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025811583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:07,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019853307] [2024-06-28 01:33:07,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:07,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:07,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:07,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:07,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 172 transitions, 1744 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:07,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:07,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:07,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:08,043 INFO L124 PetriNetUnfolderBase]: 1548/2652 cut-off events. [2024-06-28 01:33:08,044 INFO L125 PetriNetUnfolderBase]: For 62636/62636 co-relation queries the response was YES. [2024-06-28 01:33:08,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14051 conditions, 2652 events. 1548/2652 cut-off events. For 62636/62636 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15588 event pairs, 235 based on Foata normal form. 6/2606 useless extension candidates. Maximal degree in co-relation 13968. Up to 1601 conditions per place. [2024-06-28 01:33:08,064 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 147 selfloop transitions, 63 changer transitions 0/217 dead transitions. [2024-06-28 01:33:08,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 217 transitions, 2498 flow [2024-06-28 01:33:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 01:33:08,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2024-06-28 01:33:08,065 INFO L175 Difference]: Start difference. First operand has 180 places, 172 transitions, 1744 flow. Second operand 9 states and 177 transitions. [2024-06-28 01:33:08,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 217 transitions, 2498 flow [2024-06-28 01:33:08,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 217 transitions, 2381 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:08,191 INFO L231 Difference]: Finished difference. Result has 181 places, 174 transitions, 1778 flow [2024-06-28 01:33:08,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1778, PETRI_PLACES=181, PETRI_TRANSITIONS=174} [2024-06-28 01:33:08,192 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2024-06-28 01:33:08,192 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 174 transitions, 1778 flow [2024-06-28 01:33:08,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:08,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:08,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:08,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:33:08,192 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:08,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:08,193 INFO L85 PathProgramCache]: Analyzing trace with hash -200239058, now seen corresponding path program 5 times [2024-06-28 01:33:08,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:08,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41072598] [2024-06-28 01:33:08,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:08,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:08,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:08,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41072598] [2024-06-28 01:33:08,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41072598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:08,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:08,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359446358] [2024-06-28 01:33:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:08,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:08,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:08,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 174 transitions, 1778 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:08,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:08,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:08,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:09,539 INFO L124 PetriNetUnfolderBase]: 1581/2760 cut-off events. [2024-06-28 01:33:09,539 INFO L125 PetriNetUnfolderBase]: For 63781/63781 co-relation queries the response was YES. [2024-06-28 01:33:09,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 2760 events. 1581/2760 cut-off events. For 63781/63781 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16837 event pairs, 459 based on Foata normal form. 3/2703 useless extension candidates. Maximal degree in co-relation 14555. Up to 2414 conditions per place. [2024-06-28 01:33:09,563 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 178 selfloop transitions, 19 changer transitions 0/204 dead transitions. [2024-06-28 01:33:09,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 204 transitions, 2278 flow [2024-06-28 01:33:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:33:09,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 01:33:09,564 INFO L175 Difference]: Start difference. First operand has 181 places, 174 transitions, 1778 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:33:09,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 204 transitions, 2278 flow [2024-06-28 01:33:09,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 204 transitions, 2168 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:09,699 INFO L231 Difference]: Finished difference. Result has 184 places, 176 transitions, 1743 flow [2024-06-28 01:33:09,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1743, PETRI_PLACES=184, PETRI_TRANSITIONS=176} [2024-06-28 01:33:09,700 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-28 01:33:09,700 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 176 transitions, 1743 flow [2024-06-28 01:33:09,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:09,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:09,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:09,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:33:09,701 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:09,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:09,701 INFO L85 PathProgramCache]: Analyzing trace with hash -107683598, now seen corresponding path program 1 times [2024-06-28 01:33:09,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:09,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391266989] [2024-06-28 01:33:09,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:09,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:10,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:10,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391266989] [2024-06-28 01:33:10,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391266989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:10,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:10,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:10,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425874221] [2024-06-28 01:33:10,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:10,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:10,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:10,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:10,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:10,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:33:10,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 176 transitions, 1743 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) [2024-06-28 01:33:10,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:10,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:33:10,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:11,405 INFO L124 PetriNetUnfolderBase]: 1413/2576 cut-off events. [2024-06-28 01:33:11,406 INFO L125 PetriNetUnfolderBase]: For 61907/61945 co-relation queries the response was YES. [2024-06-28 01:33:11,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12984 conditions, 2576 events. 1413/2576 cut-off events. For 61907/61945 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16317 event pairs, 433 based on Foata normal form. 34/2544 useless extension candidates. Maximal degree in co-relation 12899. Up to 2106 conditions per place. [2024-06-28 01:33:11,425 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 150 selfloop transitions, 20 changer transitions 0/205 dead transitions. [2024-06-28 01:33:11,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 205 transitions, 2181 flow [2024-06-28 01:33:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:33:11,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45014245014245013 [2024-06-28 01:33:11,426 INFO L175 Difference]: Start difference. First operand has 184 places, 176 transitions, 1743 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:33:11,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 205 transitions, 2181 flow [2024-06-28 01:33:11,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 205 transitions, 2136 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:11,554 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 1797 flow [2024-06-28 01:33:11,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1797, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2024-06-28 01:33:11,554 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-28 01:33:11,554 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 1797 flow [2024-06-28 01:33:11,554 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) [2024-06-28 01:33:11,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:11,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:33:11,555 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:11,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash -119090358, now seen corresponding path program 6 times [2024-06-28 01:33:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294498645] [2024-06-28 01:33:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:12,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:12,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294498645] [2024-06-28 01:33:12,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294498645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:12,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:12,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745642048] [2024-06-28 01:33:12,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:12,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:12,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:12,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 1797 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:12,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:12,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:12,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:13,066 INFO L124 PetriNetUnfolderBase]: 1655/2887 cut-off events. [2024-06-28 01:33:13,066 INFO L125 PetriNetUnfolderBase]: For 69907/69907 co-relation queries the response was YES. [2024-06-28 01:33:13,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15303 conditions, 2887 events. 1655/2887 cut-off events. For 69907/69907 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 17756 event pairs, 450 based on Foata normal form. 3/2827 useless extension candidates. Maximal degree in co-relation 15216. Up to 2393 conditions per place. [2024-06-28 01:33:13,093 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 184 selfloop transitions, 27 changer transitions 0/218 dead transitions. [2024-06-28 01:33:13,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 218 transitions, 2473 flow [2024-06-28 01:33:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:33:13,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-06-28 01:33:13,094 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 1797 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:33:13,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 218 transitions, 2473 flow [2024-06-28 01:33:13,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 218 transitions, 2414 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:13,258 INFO L231 Difference]: Finished difference. Result has 190 places, 185 transitions, 1857 flow [2024-06-28 01:33:13,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1857, PETRI_PLACES=190, PETRI_TRANSITIONS=185} [2024-06-28 01:33:13,259 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-28 01:33:13,259 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 185 transitions, 1857 flow [2024-06-28 01:33:13,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:13,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:13,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:13,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:33:13,259 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:13,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash -812081374, now seen corresponding path program 7 times [2024-06-28 01:33:13,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:13,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794791811] [2024-06-28 01:33:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:13,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794791811] [2024-06-28 01:33:13,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794791811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:13,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:13,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:13,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764994955] [2024-06-28 01:33:13,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:13,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:13,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:13,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:14,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:14,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 185 transitions, 1857 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:14,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:14,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:14,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:14,575 INFO L124 PetriNetUnfolderBase]: 1666/2891 cut-off events. [2024-06-28 01:33:14,575 INFO L125 PetriNetUnfolderBase]: For 70592/70592 co-relation queries the response was YES. [2024-06-28 01:33:14,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15487 conditions, 2891 events. 1666/2891 cut-off events. For 70592/70592 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 17654 event pairs, 492 based on Foata normal form. 1/2832 useless extension candidates. Maximal degree in co-relation 15399. Up to 2598 conditions per place. [2024-06-28 01:33:14,596 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 188 selfloop transitions, 18 changer transitions 0/213 dead transitions. [2024-06-28 01:33:14,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 213 transitions, 2371 flow [2024-06-28 01:33:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:33:14,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-06-28 01:33:14,597 INFO L175 Difference]: Start difference. First operand has 190 places, 185 transitions, 1857 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:33:14,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 213 transitions, 2371 flow [2024-06-28 01:33:14,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 213 transitions, 2329 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:14,756 INFO L231 Difference]: Finished difference. Result has 194 places, 187 transitions, 1878 flow [2024-06-28 01:33:14,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1878, PETRI_PLACES=194, PETRI_TRANSITIONS=187} [2024-06-28 01:33:14,756 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 151 predicate places. [2024-06-28 01:33:14,756 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 187 transitions, 1878 flow [2024-06-28 01:33:14,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:14,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:14,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:14,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:33:14,757 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:14,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:14,757 INFO L85 PathProgramCache]: Analyzing trace with hash -812072756, now seen corresponding path program 7 times [2024-06-28 01:33:14,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:14,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110317910] [2024-06-28 01:33:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:15,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:15,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110317910] [2024-06-28 01:33:15,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110317910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:15,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:15,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:15,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596426410] [2024-06-28 01:33:15,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:15,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:15,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:15,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:15,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:15,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 187 transitions, 1878 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:15,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:15,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:15,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:16,112 INFO L124 PetriNetUnfolderBase]: 1660/2917 cut-off events. [2024-06-28 01:33:16,113 INFO L125 PetriNetUnfolderBase]: For 71392/71392 co-relation queries the response was YES. [2024-06-28 01:33:16,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15314 conditions, 2917 events. 1660/2917 cut-off events. For 71392/71392 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 18046 event pairs, 470 based on Foata normal form. 3/2850 useless extension candidates. Maximal degree in co-relation 15224. Up to 2406 conditions per place. [2024-06-28 01:33:16,134 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 186 selfloop transitions, 26 changer transitions 0/219 dead transitions. [2024-06-28 01:33:16,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 219 transitions, 2404 flow [2024-06-28 01:33:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:33:16,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45584045584045585 [2024-06-28 01:33:16,135 INFO L175 Difference]: Start difference. First operand has 194 places, 187 transitions, 1878 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:33:16,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 219 transitions, 2404 flow [2024-06-28 01:33:16,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 219 transitions, 2361 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:16,263 INFO L231 Difference]: Finished difference. Result has 196 places, 187 transitions, 1892 flow [2024-06-28 01:33:16,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1892, PETRI_PLACES=196, PETRI_TRANSITIONS=187} [2024-06-28 01:33:16,263 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 153 predicate places. [2024-06-28 01:33:16,264 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 187 transitions, 1892 flow [2024-06-28 01:33:16,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:16,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:16,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:16,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:33:16,264 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:16,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:16,264 INFO L85 PathProgramCache]: Analyzing trace with hash -432133256, now seen corresponding path program 8 times [2024-06-28 01:33:16,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:16,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381117313] [2024-06-28 01:33:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:16,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:16,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:16,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381117313] [2024-06-28 01:33:16,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381117313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:16,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:16,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416593227] [2024-06-28 01:33:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:16,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:16,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:17,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:17,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 187 transitions, 1892 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:17,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:17,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:17,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:17,589 INFO L124 PetriNetUnfolderBase]: 1671/2900 cut-off events. [2024-06-28 01:33:17,589 INFO L125 PetriNetUnfolderBase]: For 71416/71416 co-relation queries the response was YES. [2024-06-28 01:33:17,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15487 conditions, 2900 events. 1671/2900 cut-off events. For 71416/71416 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17738 event pairs, 475 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 15396. Up to 2513 conditions per place. [2024-06-28 01:33:17,611 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 180 selfloop transitions, 31 changer transitions 0/218 dead transitions. [2024-06-28 01:33:17,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 218 transitions, 2536 flow [2024-06-28 01:33:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:33:17,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:33:17,612 INFO L175 Difference]: Start difference. First operand has 196 places, 187 transitions, 1892 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:33:17,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 218 transitions, 2536 flow [2024-06-28 01:33:17,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 218 transitions, 2472 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:17,745 INFO L231 Difference]: Finished difference. Result has 197 places, 189 transitions, 1917 flow [2024-06-28 01:33:17,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1917, PETRI_PLACES=197, PETRI_TRANSITIONS=189} [2024-06-28 01:33:17,745 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-06-28 01:33:17,745 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 189 transitions, 1917 flow [2024-06-28 01:33:17,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:17,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:17,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:17,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:33:17,746 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:17,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:17,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1125124210, now seen corresponding path program 5 times [2024-06-28 01:33:17,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:17,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400562956] [2024-06-28 01:33:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:17,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400562956] [2024-06-28 01:33:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400562956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:18,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143320876] [2024-06-28 01:33:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:18,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:18,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:18,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:18,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:18,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:33:18,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 189 transitions, 1917 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) [2024-06-28 01:33:18,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:18,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:33:18,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:19,249 INFO L124 PetriNetUnfolderBase]: 1560/2853 cut-off events. [2024-06-28 01:33:19,250 INFO L125 PetriNetUnfolderBase]: For 72803/72819 co-relation queries the response was YES. [2024-06-28 01:33:19,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14849 conditions, 2853 events. 1560/2853 cut-off events. For 72803/72819 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18296 event pairs, 438 based on Foata normal form. 2/2759 useless extension candidates. Maximal degree in co-relation 14757. Up to 2330 conditions per place. [2024-06-28 01:33:19,276 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 171 selfloop transitions, 17 changer transitions 0/217 dead transitions. [2024-06-28 01:33:19,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 217 transitions, 2391 flow [2024-06-28 01:33:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:33:19,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-06-28 01:33:19,277 INFO L175 Difference]: Start difference. First operand has 197 places, 189 transitions, 1917 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:33:19,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 217 transitions, 2391 flow [2024-06-28 01:33:19,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 217 transitions, 2234 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:19,438 INFO L231 Difference]: Finished difference. Result has 197 places, 189 transitions, 1799 flow [2024-06-28 01:33:19,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1799, PETRI_PLACES=197, PETRI_TRANSITIONS=189} [2024-06-28 01:33:19,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-06-28 01:33:19,439 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 189 transitions, 1799 flow [2024-06-28 01:33:19,439 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) [2024-06-28 01:33:19,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:19,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:19,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:33:19,439 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:19,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash -432126746, now seen corresponding path program 9 times [2024-06-28 01:33:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94320683] [2024-06-28 01:33:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:20,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:20,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94320683] [2024-06-28 01:33:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94320683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:20,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:20,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696619548] [2024-06-28 01:33:20,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:20,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:20,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:20,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:20,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 189 transitions, 1799 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:20,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:20,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:20,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:20,809 INFO L124 PetriNetUnfolderBase]: 1680/2902 cut-off events. [2024-06-28 01:33:20,809 INFO L125 PetriNetUnfolderBase]: For 73896/73896 co-relation queries the response was YES. [2024-06-28 01:33:20,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15256 conditions, 2902 events. 1680/2902 cut-off events. For 73896/73896 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17648 event pairs, 474 based on Foata normal form. 1/2846 useless extension candidates. Maximal degree in co-relation 15163. Up to 2522 conditions per place. [2024-06-28 01:33:20,834 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 182 selfloop transitions, 31 changer transitions 0/220 dead transitions. [2024-06-28 01:33:20,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 220 transitions, 2445 flow [2024-06-28 01:33:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:33:20,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-06-28 01:33:20,835 INFO L175 Difference]: Start difference. First operand has 197 places, 189 transitions, 1799 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:33:20,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 220 transitions, 2445 flow [2024-06-28 01:33:21,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 220 transitions, 2357 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 01:33:21,094 INFO L231 Difference]: Finished difference. Result has 196 places, 191 transitions, 1794 flow [2024-06-28 01:33:21,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1794, PETRI_PLACES=196, PETRI_TRANSITIONS=191} [2024-06-28 01:33:21,095 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 153 predicate places. [2024-06-28 01:33:21,095 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 191 transitions, 1794 flow [2024-06-28 01:33:21,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:21,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:21,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:21,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:33:21,096 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:21,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1125117266, now seen corresponding path program 8 times [2024-06-28 01:33:21,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:21,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036696178] [2024-06-28 01:33:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:21,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:21,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036696178] [2024-06-28 01:33:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036696178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:21,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:21,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921521069] [2024-06-28 01:33:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:21,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:21,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:21,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:21,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 191 transitions, 1794 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:21,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:21,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:21,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:22,474 INFO L124 PetriNetUnfolderBase]: 1713/3026 cut-off events. [2024-06-28 01:33:22,475 INFO L125 PetriNetUnfolderBase]: For 79688/79688 co-relation queries the response was YES. [2024-06-28 01:33:22,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15686 conditions, 3026 events. 1713/3026 cut-off events. For 79688/79688 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19010 event pairs, 444 based on Foata normal form. 3/2950 useless extension candidates. Maximal degree in co-relation 15592. Up to 2313 conditions per place. [2024-06-28 01:33:22,503 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 183 selfloop transitions, 38 changer transitions 0/228 dead transitions. [2024-06-28 01:33:22,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 228 transitions, 2492 flow [2024-06-28 01:33:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:33:22,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-28 01:33:22,504 INFO L175 Difference]: Start difference. First operand has 196 places, 191 transitions, 1794 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:33:22,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 228 transitions, 2492 flow [2024-06-28 01:33:22,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 228 transitions, 2437 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:22,715 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 1852 flow [2024-06-28 01:33:22,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1852, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2024-06-28 01:33:22,715 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 156 predicate places. [2024-06-28 01:33:22,715 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 1852 flow [2024-06-28 01:33:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:22,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:22,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:22,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:33:22,716 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:22,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash -431895858, now seen corresponding path program 9 times [2024-06-28 01:33:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:22,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536434476] [2024-06-28 01:33:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:22,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:23,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536434476] [2024-06-28 01:33:23,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536434476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:23,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:23,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660575689] [2024-06-28 01:33:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:23,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:23,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:23,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:23,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:23,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:23,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 1852 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:23,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:23,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:23,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:24,166 INFO L124 PetriNetUnfolderBase]: 1746/3060 cut-off events. [2024-06-28 01:33:24,167 INFO L125 PetriNetUnfolderBase]: For 83521/83521 co-relation queries the response was YES. [2024-06-28 01:33:24,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16219 conditions, 3060 events. 1746/3060 cut-off events. For 83521/83521 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19106 event pairs, 474 based on Foata normal form. 3/2992 useless extension candidates. Maximal degree in co-relation 16124. Up to 2337 conditions per place. [2024-06-28 01:33:24,198 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 188 selfloop transitions, 37 changer transitions 0/232 dead transitions. [2024-06-28 01:33:24,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 232 transitions, 2570 flow [2024-06-28 01:33:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:33:24,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-28 01:33:24,200 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 1852 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:33:24,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 232 transitions, 2570 flow [2024-06-28 01:33:24,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 232 transitions, 2441 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:24,489 INFO L231 Difference]: Finished difference. Result has 201 places, 195 transitions, 1838 flow [2024-06-28 01:33:24,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1838, PETRI_PLACES=201, PETRI_TRANSITIONS=195} [2024-06-28 01:33:24,489 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 158 predicate places. [2024-06-28 01:33:24,489 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 195 transitions, 1838 flow [2024-06-28 01:33:24,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:24,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:24,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:33:24,490 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:24,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1124886874, now seen corresponding path program 10 times [2024-06-28 01:33:24,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:24,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346835683] [2024-06-28 01:33:24,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:24,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:25,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346835683] [2024-06-28 01:33:25,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346835683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:25,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504422150] [2024-06-28 01:33:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:25,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:25,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:25,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:25,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:25,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 195 transitions, 1838 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:25,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:25,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:25,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,861 INFO L124 PetriNetUnfolderBase]: 1744/3017 cut-off events. [2024-06-28 01:33:25,862 INFO L125 PetriNetUnfolderBase]: For 79796/79796 co-relation queries the response was YES. [2024-06-28 01:33:25,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15907 conditions, 3017 events. 1744/3017 cut-off events. For 79796/79796 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18555 event pairs, 502 based on Foata normal form. 1/2957 useless extension candidates. Maximal degree in co-relation 15811. Up to 2622 conditions per place. [2024-06-28 01:33:25,887 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 186 selfloop transitions, 30 changer transitions 0/223 dead transitions. [2024-06-28 01:33:25,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 223 transitions, 2368 flow [2024-06-28 01:33:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:25,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:33:25,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472934472934473 [2024-06-28 01:33:25,889 INFO L175 Difference]: Start difference. First operand has 201 places, 195 transitions, 1838 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:33:25,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 223 transitions, 2368 flow [2024-06-28 01:33:26,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 223 transitions, 2241 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:26,123 INFO L231 Difference]: Finished difference. Result has 202 places, 195 transitions, 1776 flow [2024-06-28 01:33:26,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1776, PETRI_PLACES=202, PETRI_TRANSITIONS=195} [2024-06-28 01:33:26,124 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-28 01:33:26,124 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 195 transitions, 1776 flow [2024-06-28 01:33:26,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:26,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:26,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:26,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:33:26,124 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:26,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1124878256, now seen corresponding path program 10 times [2024-06-28 01:33:26,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:26,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736701302] [2024-06-28 01:33:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:26,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:26,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:26,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736701302] [2024-06-28 01:33:26,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736701302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:26,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:26,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:26,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160813933] [2024-06-28 01:33:26,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:26,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:26,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:26,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:26,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:26,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 195 transitions, 1776 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:26,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:26,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:26,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:27,568 INFO L124 PetriNetUnfolderBase]: 1738/3057 cut-off events. [2024-06-28 01:33:27,569 INFO L125 PetriNetUnfolderBase]: For 79806/79806 co-relation queries the response was YES. [2024-06-28 01:33:27,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15367 conditions, 3057 events. 1738/3057 cut-off events. For 79806/79806 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19174 event pairs, 475 based on Foata normal form. 3/2986 useless extension candidates. Maximal degree in co-relation 15271. Up to 2330 conditions per place. [2024-06-28 01:33:27,595 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 184 selfloop transitions, 38 changer transitions 0/229 dead transitions. [2024-06-28 01:33:27,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 229 transitions, 2336 flow [2024-06-28 01:33:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:33:27,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-28 01:33:27,596 INFO L175 Difference]: Start difference. First operand has 202 places, 195 transitions, 1776 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:33:27,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 229 transitions, 2336 flow [2024-06-28 01:33:27,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 229 transitions, 2241 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:27,802 INFO L231 Difference]: Finished difference. Result has 202 places, 195 transitions, 1762 flow [2024-06-28 01:33:27,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1762, PETRI_PLACES=202, PETRI_TRANSITIONS=195} [2024-06-28 01:33:27,803 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-28 01:33:27,803 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 195 transitions, 1762 flow [2024-06-28 01:33:27,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:27,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:27,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:27,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:33:27,803 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:27,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:27,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1066563272, now seen corresponding path program 11 times [2024-06-28 01:33:27,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:27,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201505041] [2024-06-28 01:33:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201505041] [2024-06-28 01:33:28,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201505041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:28,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:28,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:28,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398151015] [2024-06-28 01:33:28,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:28,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:28,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:28,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:28,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:28,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 195 transitions, 1762 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:28,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:28,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:28,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:29,538 INFO L124 PetriNetUnfolderBase]: 2292/4064 cut-off events. [2024-06-28 01:33:29,538 INFO L125 PetriNetUnfolderBase]: For 81678/81678 co-relation queries the response was YES. [2024-06-28 01:33:29,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20116 conditions, 4064 events. 2292/4064 cut-off events. For 81678/81678 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 27659 event pairs, 339 based on Foata normal form. 3/3967 useless extension candidates. Maximal degree in co-relation 20019. Up to 2534 conditions per place. [2024-06-28 01:33:29,571 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 250 selfloop transitions, 116 changer transitions 0/373 dead transitions. [2024-06-28 01:33:29,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 373 transitions, 4085 flow [2024-06-28 01:33:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 01:33:29,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49743589743589745 [2024-06-28 01:33:29,572 INFO L175 Difference]: Start difference. First operand has 202 places, 195 transitions, 1762 flow. Second operand 10 states and 194 transitions. [2024-06-28 01:33:29,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 373 transitions, 4085 flow [2024-06-28 01:33:29,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 373 transitions, 3908 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:29,817 INFO L231 Difference]: Finished difference. Result has 209 places, 276 transitions, 2945 flow [2024-06-28 01:33:29,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2945, PETRI_PLACES=209, PETRI_TRANSITIONS=276} [2024-06-28 01:33:29,818 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-28 01:33:29,818 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 276 transitions, 2945 flow [2024-06-28 01:33:29,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:33:29,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:29,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:29,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:33:29,818 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:29,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:29,819 INFO L85 PathProgramCache]: Analyzing trace with hash -199839871, now seen corresponding path program 1 times [2024-06-28 01:33:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:29,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016560292] [2024-06-28 01:33:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:29,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:31,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:31,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016560292] [2024-06-28 01:33:31,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016560292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:31,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:31,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:31,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104919974] [2024-06-28 01:33:31,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:31,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:31,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:31,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:31,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:31,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:33:31,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 276 transitions, 2945 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) [2024-06-28 01:33:31,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:31,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:33:31,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:32,339 INFO L124 PetriNetUnfolderBase]: 1973/3677 cut-off events. [2024-06-28 01:33:32,340 INFO L125 PetriNetUnfolderBase]: For 79875/79875 co-relation queries the response was YES. [2024-06-28 01:33:32,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19156 conditions, 3677 events. 1973/3677 cut-off events. For 79875/79875 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 26152 event pairs, 729 based on Foata normal form. 2/3588 useless extension candidates. Maximal degree in co-relation 19053. Up to 2900 conditions per place. [2024-06-28 01:33:32,379 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 194 selfloop transitions, 24 changer transitions 0/307 dead transitions. [2024-06-28 01:33:32,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 307 transitions, 3479 flow [2024-06-28 01:33:32,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 01:33:32,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586894586894587 [2024-06-28 01:33:32,380 INFO L175 Difference]: Start difference. First operand has 209 places, 276 transitions, 2945 flow. Second operand 9 states and 161 transitions. [2024-06-28 01:33:32,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 307 transitions, 3479 flow [2024-06-28 01:33:32,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 307 transitions, 3374 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:32,681 INFO L231 Difference]: Finished difference. Result has 215 places, 278 transitions, 2915 flow [2024-06-28 01:33:32,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2915, PETRI_PLACES=215, PETRI_TRANSITIONS=278} [2024-06-28 01:33:32,682 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-28 01:33:32,682 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 278 transitions, 2915 flow [2024-06-28 01:33:32,682 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) [2024-06-28 01:33:32,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:32,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:32,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:33:32,683 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:32,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash 984018456, now seen corresponding path program 1 times [2024-06-28 01:33:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906314076] [2024-06-28 01:33:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:32,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906314076] [2024-06-28 01:33:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906314076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:32,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:33:32,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577563786] [2024-06-28 01:33:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:33:32,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:32,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:33:32,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:33:32,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-06-28 01:33:32,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 278 transitions, 2915 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:32,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:32,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-06-28 01:33:32,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:33,469 INFO L124 PetriNetUnfolderBase]: 1784/3640 cut-off events. [2024-06-28 01:33:33,470 INFO L125 PetriNetUnfolderBase]: For 51589/51857 co-relation queries the response was YES. [2024-06-28 01:33:33,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16192 conditions, 3640 events. 1784/3640 cut-off events. For 51589/51857 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 27907 event pairs, 337 based on Foata normal form. 55/3463 useless extension candidates. Maximal degree in co-relation 16087. Up to 1501 conditions per place. [2024-06-28 01:33:33,510 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 101 selfloop transitions, 75 changer transitions 3/386 dead transitions. [2024-06-28 01:33:33,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 386 transitions, 4031 flow [2024-06-28 01:33:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:33:33,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-28 01:33:33,511 INFO L175 Difference]: Start difference. First operand has 215 places, 278 transitions, 2915 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:33:33,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 386 transitions, 4031 flow [2024-06-28 01:33:33,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 386 transitions, 3911 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:33,646 INFO L231 Difference]: Finished difference. Result has 220 places, 328 transitions, 3478 flow [2024-06-28 01:33:33,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3478, PETRI_PLACES=220, PETRI_TRANSITIONS=328} [2024-06-28 01:33:33,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-28 01:33:33,647 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 328 transitions, 3478 flow [2024-06-28 01:33:33,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:33,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:33,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:33,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:33:33,648 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:33,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1582229860, now seen corresponding path program 1 times [2024-06-28 01:33:33,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:33,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59493384] [2024-06-28 01:33:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:33,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:35,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:35,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59493384] [2024-06-28 01:33:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59493384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:35,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:35,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:35,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046329777] [2024-06-28 01:33:35,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:35,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:35,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:35,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:33:35,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 328 transitions, 3478 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) [2024-06-28 01:33:35,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:35,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:33:35,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:36,884 INFO L124 PetriNetUnfolderBase]: 2615/4730 cut-off events. [2024-06-28 01:33:36,885 INFO L125 PetriNetUnfolderBase]: For 85589/85605 co-relation queries the response was YES. [2024-06-28 01:33:36,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26044 conditions, 4730 events. 2615/4730 cut-off events. For 85589/85605 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 33198 event pairs, 527 based on Foata normal form. 7/4712 useless extension candidates. Maximal degree in co-relation 25935. Up to 3842 conditions per place. [2024-06-28 01:33:36,928 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 267 selfloop transitions, 26 changer transitions 32/380 dead transitions. [2024-06-28 01:33:36,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 380 transitions, 4338 flow [2024-06-28 01:33:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:33:36,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-06-28 01:33:36,929 INFO L175 Difference]: Start difference. First operand has 220 places, 328 transitions, 3478 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:33:36,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 380 transitions, 4338 flow [2024-06-28 01:33:37,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 380 transitions, 4338 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:33:37,387 INFO L231 Difference]: Finished difference. Result has 230 places, 304 transitions, 3277 flow [2024-06-28 01:33:37,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3478, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3277, PETRI_PLACES=230, PETRI_TRANSITIONS=304} [2024-06-28 01:33:37,388 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-28 01:33:37,388 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 304 transitions, 3277 flow [2024-06-28 01:33:37,388 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) [2024-06-28 01:33:37,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:37,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:37,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:33:37,389 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:37,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash 232208664, now seen corresponding path program 2 times [2024-06-28 01:33:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:37,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125397149] [2024-06-28 01:33:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:37,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:38,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:38,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125397149] [2024-06-28 01:33:38,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125397149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:38,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:38,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:38,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040877497] [2024-06-28 01:33:38,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:38,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:38,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:38,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:38,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:38,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:33:38,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 304 transitions, 3277 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) [2024-06-28 01:33:38,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:38,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:33:38,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:39,641 INFO L124 PetriNetUnfolderBase]: 2172/3990 cut-off events. [2024-06-28 01:33:39,641 INFO L125 PetriNetUnfolderBase]: For 84988/85004 co-relation queries the response was YES. [2024-06-28 01:33:39,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22699 conditions, 3990 events. 2172/3990 cut-off events. For 84988/85004 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27492 event pairs, 442 based on Foata normal form. 7/3972 useless extension candidates. Maximal degree in co-relation 22586. Up to 3208 conditions per place. [2024-06-28 01:33:39,681 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 274 selfloop transitions, 30 changer transitions 0/359 dead transitions. [2024-06-28 01:33:39,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 359 transitions, 4161 flow [2024-06-28 01:33:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 01:33:39,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-28 01:33:39,683 INFO L175 Difference]: Start difference. First operand has 230 places, 304 transitions, 3277 flow. Second operand 11 states and 202 transitions. [2024-06-28 01:33:39,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 359 transitions, 4161 flow [2024-06-28 01:33:40,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 359 transitions, 4068 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 01:33:40,027 INFO L231 Difference]: Finished difference. Result has 229 places, 308 transitions, 3295 flow [2024-06-28 01:33:40,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3295, PETRI_PLACES=229, PETRI_TRANSITIONS=308} [2024-06-28 01:33:40,027 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 186 predicate places. [2024-06-28 01:33:40,027 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 308 transitions, 3295 flow [2024-06-28 01:33:40,027 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) [2024-06-28 01:33:40,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:40,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:40,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:33:40,028 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:40,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash -418458203, now seen corresponding path program 1 times [2024-06-28 01:33:40,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:40,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522801344] [2024-06-28 01:33:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:40,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:41,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:41,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522801344] [2024-06-28 01:33:41,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522801344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:41,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:41,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:41,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059875636] [2024-06-28 01:33:41,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:41,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:41,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:41,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:41,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 308 transitions, 3295 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:41,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:41,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:41,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:42,095 INFO L124 PetriNetUnfolderBase]: 2308/4150 cut-off events. [2024-06-28 01:33:42,095 INFO L125 PetriNetUnfolderBase]: For 86698/86704 co-relation queries the response was YES. [2024-06-28 01:33:42,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23526 conditions, 4150 events. 2308/4150 cut-off events. For 86698/86704 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28038 event pairs, 479 based on Foata normal form. 7/4135 useless extension candidates. Maximal degree in co-relation 23414. Up to 3596 conditions per place. [2024-06-28 01:33:42,136 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 297 selfloop transitions, 26 changer transitions 24/355 dead transitions. [2024-06-28 01:33:42,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 355 transitions, 4234 flow [2024-06-28 01:33:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:33:42,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461538461538462 [2024-06-28 01:33:42,137 INFO L175 Difference]: Start difference. First operand has 229 places, 308 transitions, 3295 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:33:42,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 355 transitions, 4234 flow [2024-06-28 01:33:42,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 355 transitions, 4163 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:42,461 INFO L231 Difference]: Finished difference. Result has 231 places, 287 transitions, 3088 flow [2024-06-28 01:33:42,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3088, PETRI_PLACES=231, PETRI_TRANSITIONS=287} [2024-06-28 01:33:42,462 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2024-06-28 01:33:42,462 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 287 transitions, 3088 flow [2024-06-28 01:33:42,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:42,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:42,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:42,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:33:42,463 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:42,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:42,463 INFO L85 PathProgramCache]: Analyzing trace with hash -414739133, now seen corresponding path program 2 times [2024-06-28 01:33:42,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:42,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321071433] [2024-06-28 01:33:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:42,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:43,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:43,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:43,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321071433] [2024-06-28 01:33:43,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321071433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:43,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:43,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:43,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560021651] [2024-06-28 01:33:43,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:43,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:43,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:43,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:43,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:43,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:43,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 287 transitions, 3088 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:43,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:43,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:44,181 INFO L124 PetriNetUnfolderBase]: 2155/3687 cut-off events. [2024-06-28 01:33:44,182 INFO L125 PetriNetUnfolderBase]: For 87394/87400 co-relation queries the response was YES. [2024-06-28 01:33:44,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21660 conditions, 3687 events. 2155/3687 cut-off events. For 87394/87400 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23411 event pairs, 361 based on Foata normal form. 7/3653 useless extension candidates. Maximal degree in co-relation 21547. Up to 2706 conditions per place. [2024-06-28 01:33:44,214 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 228 selfloop transitions, 100 changer transitions 0/336 dead transitions. [2024-06-28 01:33:44,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 336 transitions, 4271 flow [2024-06-28 01:33:44,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:33:44,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 01:33:44,215 INFO L175 Difference]: Start difference. First operand has 231 places, 287 transitions, 3088 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:33:44,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 336 transitions, 4271 flow [2024-06-28 01:33:44,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 336 transitions, 4206 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:44,520 INFO L231 Difference]: Finished difference. Result has 232 places, 293 transitions, 3313 flow [2024-06-28 01:33:44,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3023, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3313, PETRI_PLACES=232, PETRI_TRANSITIONS=293} [2024-06-28 01:33:44,521 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-28 01:33:44,521 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 293 transitions, 3313 flow [2024-06-28 01:33:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:44,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:44,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:44,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:33:44,521 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:44,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:44,521 INFO L85 PathProgramCache]: Analyzing trace with hash -414739288, now seen corresponding path program 3 times [2024-06-28 01:33:44,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:44,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665605636] [2024-06-28 01:33:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:44,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:46,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:46,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665605636] [2024-06-28 01:33:46,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665605636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:46,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:46,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727760931] [2024-06-28 01:33:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:46,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:46,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:33:46,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 293 transitions, 3313 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) [2024-06-28 01:33:46,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:46,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:33:46,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:47,187 INFO L124 PetriNetUnfolderBase]: 2048/3627 cut-off events. [2024-06-28 01:33:47,187 INFO L125 PetriNetUnfolderBase]: For 91209/91219 co-relation queries the response was YES. [2024-06-28 01:33:47,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21532 conditions, 3627 events. 2048/3627 cut-off events. For 91209/91219 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23767 event pairs, 352 based on Foata normal form. 7/3599 useless extension candidates. Maximal degree in co-relation 21418. Up to 2805 conditions per place. [2024-06-28 01:33:47,228 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 240 selfloop transitions, 60 changer transitions 0/336 dead transitions. [2024-06-28 01:33:47,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 336 transitions, 4133 flow [2024-06-28 01:33:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:33:47,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-28 01:33:47,229 INFO L175 Difference]: Start difference. First operand has 232 places, 293 transitions, 3313 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:33:47,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 336 transitions, 4133 flow [2024-06-28 01:33:47,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 336 transitions, 4009 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:47,568 INFO L231 Difference]: Finished difference. Result has 237 places, 295 transitions, 3340 flow [2024-06-28 01:33:47,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3340, PETRI_PLACES=237, PETRI_TRANSITIONS=295} [2024-06-28 01:33:47,569 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 194 predicate places. [2024-06-28 01:33:47,569 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 295 transitions, 3340 flow [2024-06-28 01:33:47,569 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) [2024-06-28 01:33:47,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:47,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:47,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:33:47,570 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:47,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:47,570 INFO L85 PathProgramCache]: Analyzing trace with hash -414733336, now seen corresponding path program 1 times [2024-06-28 01:33:47,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:47,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956504085] [2024-06-28 01:33:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:47,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:48,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:48,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956504085] [2024-06-28 01:33:48,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956504085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:48,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:48,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:48,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327065545] [2024-06-28 01:33:48,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:48,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:48,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:48,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:48,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:48,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:48,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 295 transitions, 3340 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:48,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:48,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:48,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:49,403 INFO L124 PetriNetUnfolderBase]: 2327/3990 cut-off events. [2024-06-28 01:33:49,403 INFO L125 PetriNetUnfolderBase]: For 103955/103955 co-relation queries the response was YES. [2024-06-28 01:33:49,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23940 conditions, 3990 events. 2327/3990 cut-off events. For 103955/103955 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25546 event pairs, 455 based on Foata normal form. 3/3957 useless extension candidates. Maximal degree in co-relation 23824. Up to 1863 conditions per place. [2024-06-28 01:33:49,448 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 215 selfloop transitions, 149 changer transitions 0/372 dead transitions. [2024-06-28 01:33:49,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 372 transitions, 4699 flow [2024-06-28 01:33:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-28 01:33:49,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662004662004662 [2024-06-28 01:33:49,450 INFO L175 Difference]: Start difference. First operand has 237 places, 295 transitions, 3340 flow. Second operand 11 states and 200 transitions. [2024-06-28 01:33:49,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 372 transitions, 4699 flow [2024-06-28 01:33:49,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 372 transitions, 4550 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:49,894 INFO L231 Difference]: Finished difference. Result has 244 places, 314 transitions, 3812 flow [2024-06-28 01:33:49,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3812, PETRI_PLACES=244, PETRI_TRANSITIONS=314} [2024-06-28 01:33:49,895 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 201 predicate places. [2024-06-28 01:33:49,895 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 314 transitions, 3812 flow [2024-06-28 01:33:49,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:49,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:49,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:49,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:33:49,895 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:49,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:49,896 INFO L85 PathProgramCache]: Analyzing trace with hash -414733553, now seen corresponding path program 3 times [2024-06-28 01:33:49,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:49,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728705373] [2024-06-28 01:33:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:49,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:50,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:50,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728705373] [2024-06-28 01:33:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728705373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:50,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:50,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911980063] [2024-06-28 01:33:50,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:50,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:50,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 314 transitions, 3812 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:50,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:50,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:50,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:51,619 INFO L124 PetriNetUnfolderBase]: 2325/3962 cut-off events. [2024-06-28 01:33:51,620 INFO L125 PetriNetUnfolderBase]: For 104330/104336 co-relation queries the response was YES. [2024-06-28 01:33:51,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24991 conditions, 3962 events. 2325/3962 cut-off events. For 104330/104336 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 25314 event pairs, 376 based on Foata normal form. 7/3927 useless extension candidates. Maximal degree in co-relation 24870. Up to 2859 conditions per place. [2024-06-28 01:33:51,669 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 241 selfloop transitions, 107 changer transitions 0/356 dead transitions. [2024-06-28 01:33:51,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 356 transitions, 4836 flow [2024-06-28 01:33:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:51,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:33:51,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-28 01:33:51,671 INFO L175 Difference]: Start difference. First operand has 244 places, 314 transitions, 3812 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:33:51,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 356 transitions, 4836 flow [2024-06-28 01:33:52,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 356 transitions, 4793 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:52,188 INFO L231 Difference]: Finished difference. Result has 251 places, 314 transitions, 3989 flow [2024-06-28 01:33:52,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3769, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3989, PETRI_PLACES=251, PETRI_TRANSITIONS=314} [2024-06-28 01:33:52,189 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 208 predicate places. [2024-06-28 01:33:52,189 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 314 transitions, 3989 flow [2024-06-28 01:33:52,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:52,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:52,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:52,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:33:52,190 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:52,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:52,190 INFO L85 PathProgramCache]: Analyzing trace with hash 379914209, now seen corresponding path program 4 times [2024-06-28 01:33:52,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:52,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576886051] [2024-06-28 01:33:52,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:52,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:52,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:52,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576886051] [2024-06-28 01:33:52,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576886051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:52,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:52,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:52,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612689546] [2024-06-28 01:33:52,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:52,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:52,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:52,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:52,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:53,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:53,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 314 transitions, 3989 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:53,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:53,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:53,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:53,882 INFO L124 PetriNetUnfolderBase]: 2356/4017 cut-off events. [2024-06-28 01:33:53,882 INFO L125 PetriNetUnfolderBase]: For 112585/112591 co-relation queries the response was YES. [2024-06-28 01:33:53,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25946 conditions, 4017 events. 2356/4017 cut-off events. For 112585/112591 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25658 event pairs, 378 based on Foata normal form. 7/3983 useless extension candidates. Maximal degree in co-relation 25823. Up to 2893 conditions per place. [2024-06-28 01:33:53,929 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 274 selfloop transitions, 82 changer transitions 0/364 dead transitions. [2024-06-28 01:33:53,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 364 transitions, 5393 flow [2024-06-28 01:33:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:33:53,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 01:33:53,931 INFO L175 Difference]: Start difference. First operand has 251 places, 314 transitions, 3989 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:33:53,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 364 transitions, 5393 flow [2024-06-28 01:33:54,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 364 transitions, 5161 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:54,604 INFO L231 Difference]: Finished difference. Result has 252 places, 320 transitions, 4020 flow [2024-06-28 01:33:54,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3769, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4020, PETRI_PLACES=252, PETRI_TRANSITIONS=320} [2024-06-28 01:33:54,605 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-06-28 01:33:54,605 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 320 transitions, 4020 flow [2024-06-28 01:33:54,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:54,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:54,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:54,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:33:54,605 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:54,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:54,605 INFO L85 PathProgramCache]: Analyzing trace with hash 379914426, now seen corresponding path program 2 times [2024-06-28 01:33:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:54,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861091762] [2024-06-28 01:33:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:54,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:55,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:55,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861091762] [2024-06-28 01:33:55,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861091762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:55,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:55,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:55,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244805692] [2024-06-28 01:33:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:55,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:55,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:55,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:55,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:55,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:55,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 320 transitions, 4020 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:55,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:55,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:55,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:56,353 INFO L124 PetriNetUnfolderBase]: 2568/4329 cut-off events. [2024-06-28 01:33:56,354 INFO L125 PetriNetUnfolderBase]: For 150837/150843 co-relation queries the response was YES. [2024-06-28 01:33:56,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28179 conditions, 4329 events. 2568/4329 cut-off events. For 150837/150843 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27625 event pairs, 304 based on Foata normal form. 12/4303 useless extension candidates. Maximal degree in co-relation 28055. Up to 1595 conditions per place. [2024-06-28 01:33:56,404 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 254 selfloop transitions, 129 changer transitions 0/391 dead transitions. [2024-06-28 01:33:56,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 391 transitions, 5588 flow [2024-06-28 01:33:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-28 01:33:56,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2024-06-28 01:33:56,405 INFO L175 Difference]: Start difference. First operand has 252 places, 320 transitions, 4020 flow. Second operand 10 states and 201 transitions. [2024-06-28 01:33:56,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 391 transitions, 5588 flow [2024-06-28 01:33:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 391 transitions, 5464 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:57,122 INFO L231 Difference]: Finished difference. Result has 257 places, 332 transitions, 4293 flow [2024-06-28 01:33:57,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4293, PETRI_PLACES=257, PETRI_TRANSITIONS=332} [2024-06-28 01:33:57,122 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-06-28 01:33:57,123 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 332 transitions, 4293 flow [2024-06-28 01:33:57,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:57,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:57,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:57,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:33:57,123 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:57,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash 380123676, now seen corresponding path program 3 times [2024-06-28 01:33:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115811615] [2024-06-28 01:33:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:57,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:57,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:57,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115811615] [2024-06-28 01:33:57,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115811615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:57,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:57,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:57,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864889283] [2024-06-28 01:33:57,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:57,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:57,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:57,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:57,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:33:57,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 332 transitions, 4293 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:57,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:57,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:33:57,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:58,958 INFO L124 PetriNetUnfolderBase]: 2634/4515 cut-off events. [2024-06-28 01:33:58,958 INFO L125 PetriNetUnfolderBase]: For 158531/158537 co-relation queries the response was YES. [2024-06-28 01:33:58,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29529 conditions, 4515 events. 2634/4515 cut-off events. For 158531/158537 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29502 event pairs, 309 based on Foata normal form. 12/4485 useless extension candidates. Maximal degree in co-relation 29404. Up to 1643 conditions per place. [2024-06-28 01:33:59,014 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 255 selfloop transitions, 132 changer transitions 0/395 dead transitions. [2024-06-28 01:33:59,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 395 transitions, 5669 flow [2024-06-28 01:33:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 01:33:59,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:33:59,015 INFO L175 Difference]: Start difference. First operand has 257 places, 332 transitions, 4293 flow. Second operand 10 states and 195 transitions. [2024-06-28 01:33:59,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 395 transitions, 5669 flow [2024-06-28 01:33:59,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 395 transitions, 5571 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:59,928 INFO L231 Difference]: Finished difference. Result has 263 places, 336 transitions, 4520 flow [2024-06-28 01:33:59,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4203, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4520, PETRI_PLACES=263, PETRI_TRANSITIONS=336} [2024-06-28 01:33:59,928 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-28 01:33:59,929 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 336 transitions, 4520 flow [2024-06-28 01:33:59,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:33:59,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:59,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:59,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:33:59,929 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:59,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 379908474, now seen corresponding path program 4 times [2024-06-28 01:33:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299587173] [2024-06-28 01:33:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:01,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:01,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299587173] [2024-06-28 01:34:01,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299587173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:01,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:01,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592475060] [2024-06-28 01:34:01,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:01,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:01,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:34:01,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 336 transitions, 4520 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) [2024-06-28 01:34:01,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:01,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:34:01,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:02,072 INFO L124 PetriNetUnfolderBase]: 2503/4386 cut-off events. [2024-06-28 01:34:02,073 INFO L125 PetriNetUnfolderBase]: For 153598/153608 co-relation queries the response was YES. [2024-06-28 01:34:02,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29488 conditions, 4386 events. 2503/4386 cut-off events. For 153598/153608 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 29324 event pairs, 436 based on Foata normal form. 7/4351 useless extension candidates. Maximal degree in co-relation 29361. Up to 3433 conditions per place. [2024-06-28 01:34:02,128 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 284 selfloop transitions, 55 changer transitions 0/379 dead transitions. [2024-06-28 01:34:02,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 379 transitions, 5427 flow [2024-06-28 01:34:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:34:02,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-28 01:34:02,129 INFO L175 Difference]: Start difference. First operand has 263 places, 336 transitions, 4520 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:34:02,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 379 transitions, 5427 flow [2024-06-28 01:34:02,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 379 transitions, 5170 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:02,916 INFO L231 Difference]: Finished difference. Result has 266 places, 338 transitions, 4408 flow [2024-06-28 01:34:02,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4263, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4408, PETRI_PLACES=266, PETRI_TRANSITIONS=338} [2024-06-28 01:34:02,916 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 223 predicate places. [2024-06-28 01:34:02,917 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 338 transitions, 4408 flow [2024-06-28 01:34:02,917 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) [2024-06-28 01:34:02,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:02,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:02,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:34:02,917 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:02,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash 379908629, now seen corresponding path program 5 times [2024-06-28 01:34:02,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:02,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841674359] [2024-06-28 01:34:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:02,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:03,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:03,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841674359] [2024-06-28 01:34:03,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841674359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:03,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:03,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:03,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107989750] [2024-06-28 01:34:03,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:03,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:03,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:03,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 338 transitions, 4408 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:03,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:03,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:03,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:04,810 INFO L124 PetriNetUnfolderBase]: 2756/4738 cut-off events. [2024-06-28 01:34:04,810 INFO L125 PetriNetUnfolderBase]: For 161012/161012 co-relation queries the response was YES. [2024-06-28 01:34:04,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30863 conditions, 4738 events. 2756/4738 cut-off events. For 161012/161012 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 31356 event pairs, 698 based on Foata normal form. 1/4692 useless extension candidates. Maximal degree in co-relation 30735. Up to 3751 conditions per place. [2024-06-28 01:34:04,866 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 328 selfloop transitions, 74 changer transitions 0/410 dead transitions. [2024-06-28 01:34:04,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 410 transitions, 6038 flow [2024-06-28 01:34:04,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:34:04,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405594405594406 [2024-06-28 01:34:04,868 INFO L175 Difference]: Start difference. First operand has 266 places, 338 transitions, 4408 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:34:04,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 410 transitions, 6038 flow [2024-06-28 01:34:05,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 410 transitions, 5886 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:05,819 INFO L231 Difference]: Finished difference. Result has 274 places, 367 transitions, 4876 flow [2024-06-28 01:34:05,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4279, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4876, PETRI_PLACES=274, PETRI_TRANSITIONS=367} [2024-06-28 01:34:05,820 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 231 predicate places. [2024-06-28 01:34:05,820 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 367 transitions, 4876 flow [2024-06-28 01:34:05,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:05,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:05,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:05,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:34:05,820 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:05,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash 380116019, now seen corresponding path program 6 times [2024-06-28 01:34:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:05,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559249507] [2024-06-28 01:34:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:05,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:06,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:06,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559249507] [2024-06-28 01:34:06,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559249507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:06,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:06,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:06,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844517708] [2024-06-28 01:34:06,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:06,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:06,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:06,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:06,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:06,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:06,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 367 transitions, 4876 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:06,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:06,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:06,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:07,756 INFO L124 PetriNetUnfolderBase]: 2752/4648 cut-off events. [2024-06-28 01:34:07,756 INFO L125 PetriNetUnfolderBase]: For 162444/162450 co-relation queries the response was YES. [2024-06-28 01:34:07,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31087 conditions, 4648 events. 2752/4648 cut-off events. For 162444/162450 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 30197 event pairs, 429 based on Foata normal form. 8/4608 useless extension candidates. Maximal degree in co-relation 30953. Up to 3432 conditions per place. [2024-06-28 01:34:07,805 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 291 selfloop transitions, 113 changer transitions 0/412 dead transitions. [2024-06-28 01:34:07,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 412 transitions, 6182 flow [2024-06-28 01:34:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:34:07,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:34:07,807 INFO L175 Difference]: Start difference. First operand has 274 places, 367 transitions, 4876 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:34:07,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 412 transitions, 6182 flow [2024-06-28 01:34:08,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 412 transitions, 6089 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:08,837 INFO L231 Difference]: Finished difference. Result has 280 places, 367 transitions, 5017 flow [2024-06-28 01:34:08,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4783, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5017, PETRI_PLACES=280, PETRI_TRANSITIONS=367} [2024-06-28 01:34:08,838 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-28 01:34:08,838 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 367 transitions, 5017 flow [2024-06-28 01:34:08,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:08,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:08,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:08,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:34:08,839 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:08,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash -270640996, now seen corresponding path program 4 times [2024-06-28 01:34:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:08,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179223663] [2024-06-28 01:34:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:08,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:09,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:09,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179223663] [2024-06-28 01:34:09,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179223663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:09,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:09,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:09,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546483578] [2024-06-28 01:34:09,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:09,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:09,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:09,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:09,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 367 transitions, 5017 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:09,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:09,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:09,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:10,894 INFO L124 PetriNetUnfolderBase]: 2746/4759 cut-off events. [2024-06-28 01:34:10,895 INFO L125 PetriNetUnfolderBase]: For 163043/163043 co-relation queries the response was YES. [2024-06-28 01:34:10,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31394 conditions, 4759 events. 2746/4759 cut-off events. For 163043/163043 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 31733 event pairs, 593 based on Foata normal form. 3/4716 useless extension candidates. Maximal degree in co-relation 31259. Up to 2431 conditions per place. [2024-06-28 01:34:10,949 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 317 selfloop transitions, 99 changer transitions 0/424 dead transitions. [2024-06-28 01:34:10,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 424 transitions, 6283 flow [2024-06-28 01:34:10,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:34:10,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755244755244755 [2024-06-28 01:34:10,950 INFO L175 Difference]: Start difference. First operand has 280 places, 367 transitions, 5017 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:34:10,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 424 transitions, 6283 flow [2024-06-28 01:34:11,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 424 transitions, 6033 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:11,916 INFO L231 Difference]: Finished difference. Result has 283 places, 368 transitions, 4995 flow [2024-06-28 01:34:11,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4770, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4995, PETRI_PLACES=283, PETRI_TRANSITIONS=368} [2024-06-28 01:34:11,916 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-06-28 01:34:11,916 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 368 transitions, 4995 flow [2024-06-28 01:34:11,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:11,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:11,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:11,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:34:11,917 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:11,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:11,917 INFO L85 PathProgramCache]: Analyzing trace with hash 788995048, now seen corresponding path program 5 times [2024-06-28 01:34:11,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:11,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365338293] [2024-06-28 01:34:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:11,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:12,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:12,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365338293] [2024-06-28 01:34:12,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365338293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:12,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:12,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647065470] [2024-06-28 01:34:12,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:12,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:12,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:12,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:12,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 368 transitions, 4995 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:12,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:12,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:12,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:13,954 INFO L124 PetriNetUnfolderBase]: 2851/4810 cut-off events. [2024-06-28 01:34:13,954 INFO L125 PetriNetUnfolderBase]: For 184525/184525 co-relation queries the response was YES. [2024-06-28 01:34:13,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32468 conditions, 4810 events. 2851/4810 cut-off events. For 184525/184525 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 31174 event pairs, 448 based on Foata normal form. 6/4765 useless extension candidates. Maximal degree in co-relation 32331. Up to 1899 conditions per place. [2024-06-28 01:34:14,011 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 270 selfloop transitions, 152 changer transitions 0/430 dead transitions. [2024-06-28 01:34:14,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 430 transitions, 6479 flow [2024-06-28 01:34:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:14,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:34:14,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-28 01:34:14,012 INFO L175 Difference]: Start difference. First operand has 283 places, 368 transitions, 4995 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:34:14,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 430 transitions, 6479 flow [2024-06-28 01:34:14,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 430 transitions, 6366 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:14,945 INFO L231 Difference]: Finished difference. Result has 288 places, 374 transitions, 5277 flow [2024-06-28 01:34:14,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4886, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5277, PETRI_PLACES=288, PETRI_TRANSITIONS=374} [2024-06-28 01:34:14,945 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 245 predicate places. [2024-06-28 01:34:14,945 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 374 transitions, 5277 flow [2024-06-28 01:34:14,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:14,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:14,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:34:14,946 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:14,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash 788727921, now seen corresponding path program 7 times [2024-06-28 01:34:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:14,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347784708] [2024-06-28 01:34:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:15,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:15,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347784708] [2024-06-28 01:34:15,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347784708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:15,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:15,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:15,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287387932] [2024-06-28 01:34:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:15,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:15,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:15,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:15,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 374 transitions, 5277 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:15,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:15,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:15,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:16,906 INFO L124 PetriNetUnfolderBase]: 2880/4847 cut-off events. [2024-06-28 01:34:16,906 INFO L125 PetriNetUnfolderBase]: For 183806/183806 co-relation queries the response was YES. [2024-06-28 01:34:16,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33565 conditions, 4847 events. 2880/4847 cut-off events. For 183806/183806 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 31522 event pairs, 482 based on Foata normal form. 2/4799 useless extension candidates. Maximal degree in co-relation 33427. Up to 3617 conditions per place. [2024-06-28 01:34:16,965 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 290 selfloop transitions, 124 changer transitions 0/422 dead transitions. [2024-06-28 01:34:16,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 422 transitions, 6702 flow [2024-06-28 01:34:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:34:16,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 01:34:16,966 INFO L175 Difference]: Start difference. First operand has 288 places, 374 transitions, 5277 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:34:16,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 422 transitions, 6702 flow [2024-06-28 01:34:17,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 422 transitions, 6473 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:17,931 INFO L231 Difference]: Finished difference. Result has 292 places, 380 transitions, 5403 flow [2024-06-28 01:34:17,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5403, PETRI_PLACES=292, PETRI_TRANSITIONS=380} [2024-06-28 01:34:17,931 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 249 predicate places. [2024-06-28 01:34:17,931 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 380 transitions, 5403 flow [2024-06-28 01:34:17,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:17,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:17,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:17,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:34:17,932 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:17,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 781585738, now seen corresponding path program 6 times [2024-06-28 01:34:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:17,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356546469] [2024-06-28 01:34:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:17,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:18,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:18,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356546469] [2024-06-28 01:34:18,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356546469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:18,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:18,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:18,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465006049] [2024-06-28 01:34:18,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:18,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:18,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:18,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:18,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:18,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 380 transitions, 5403 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:18,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:18,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:18,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:19,909 INFO L124 PetriNetUnfolderBase]: 3024/5089 cut-off events. [2024-06-28 01:34:19,909 INFO L125 PetriNetUnfolderBase]: For 216373/216373 co-relation queries the response was YES. [2024-06-28 01:34:19,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34602 conditions, 5089 events. 3024/5089 cut-off events. For 216373/216373 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33201 event pairs, 490 based on Foata normal form. 6/5046 useless extension candidates. Maximal degree in co-relation 34463. Up to 2048 conditions per place. [2024-06-28 01:34:19,974 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 302 selfloop transitions, 140 changer transitions 0/450 dead transitions. [2024-06-28 01:34:19,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 450 transitions, 7258 flow [2024-06-28 01:34:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:19,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-28 01:34:19,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2024-06-28 01:34:19,975 INFO L175 Difference]: Start difference. First operand has 292 places, 380 transitions, 5403 flow. Second operand 10 states and 201 transitions. [2024-06-28 01:34:19,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 450 transitions, 7258 flow [2024-06-28 01:34:21,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 450 transitions, 7070 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:21,006 INFO L231 Difference]: Finished difference. Result has 296 places, 388 transitions, 5590 flow [2024-06-28 01:34:21,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5590, PETRI_PLACES=296, PETRI_TRANSITIONS=388} [2024-06-28 01:34:21,007 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-06-28 01:34:21,007 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 388 transitions, 5590 flow [2024-06-28 01:34:21,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:21,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:21,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:21,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:34:21,008 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:21,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1432335313, now seen corresponding path program 8 times [2024-06-28 01:34:21,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:21,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79863335] [2024-06-28 01:34:21,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:21,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:21,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:21,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79863335] [2024-06-28 01:34:21,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79863335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:21,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:21,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212173780] [2024-06-28 01:34:21,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:21,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:21,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:21,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:21,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 388 transitions, 5590 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:21,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:21,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:21,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:22,981 INFO L124 PetriNetUnfolderBase]: 3042/5109 cut-off events. [2024-06-28 01:34:22,981 INFO L125 PetriNetUnfolderBase]: For 214683/214683 co-relation queries the response was YES. [2024-06-28 01:34:23,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35326 conditions, 5109 events. 3042/5109 cut-off events. For 214683/214683 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 33521 event pairs, 519 based on Foata normal form. 2/5057 useless extension candidates. Maximal degree in co-relation 35186. Up to 3859 conditions per place. [2024-06-28 01:34:23,046 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 311 selfloop transitions, 116 changer transitions 0/435 dead transitions. [2024-06-28 01:34:23,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 435 transitions, 7164 flow [2024-06-28 01:34:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:34:23,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-28 01:34:23,048 INFO L175 Difference]: Start difference. First operand has 296 places, 388 transitions, 5590 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:34:23,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 435 transitions, 7164 flow [2024-06-28 01:34:24,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 435 transitions, 6856 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:24,353 INFO L231 Difference]: Finished difference. Result has 299 places, 392 transitions, 5584 flow [2024-06-28 01:34:24,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5282, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5584, PETRI_PLACES=299, PETRI_TRANSITIONS=392} [2024-06-28 01:34:24,354 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-06-28 01:34:24,354 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 392 transitions, 5584 flow [2024-06-28 01:34:24,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:24,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:24,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:24,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:34:24,354 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:24,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1439485370, now seen corresponding path program 7 times [2024-06-28 01:34:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:24,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075541137] [2024-06-28 01:34:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:25,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:25,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075541137] [2024-06-28 01:34:25,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075541137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:25,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:25,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137809093] [2024-06-28 01:34:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:25,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:25,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:25,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:25,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 392 transitions, 5584 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:25,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:25,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:25,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:26,370 INFO L124 PetriNetUnfolderBase]: 3108/5183 cut-off events. [2024-06-28 01:34:26,370 INFO L125 PetriNetUnfolderBase]: For 228027/228027 co-relation queries the response was YES. [2024-06-28 01:34:26,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35296 conditions, 5183 events. 3108/5183 cut-off events. For 228027/228027 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 33589 event pairs, 475 based on Foata normal form. 6/5135 useless extension candidates. Maximal degree in co-relation 35155. Up to 2124 conditions per place. [2024-06-28 01:34:26,435 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 288 selfloop transitions, 158 changer transitions 0/454 dead transitions. [2024-06-28 01:34:26,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 454 transitions, 7251 flow [2024-06-28 01:34:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:26,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 01:34:26,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-28 01:34:26,436 INFO L175 Difference]: Start difference. First operand has 299 places, 392 transitions, 5584 flow. Second operand 10 states and 198 transitions. [2024-06-28 01:34:26,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 454 transitions, 7251 flow [2024-06-28 01:34:27,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 454 transitions, 6895 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:27,633 INFO L231 Difference]: Finished difference. Result has 300 places, 396 transitions, 5594 flow [2024-06-28 01:34:27,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5228, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5594, PETRI_PLACES=300, PETRI_TRANSITIONS=396} [2024-06-28 01:34:27,633 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-28 01:34:27,633 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 396 transitions, 5594 flow [2024-06-28 01:34:27,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:27,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:27,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:27,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:34:27,634 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:27,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1439492810, now seen corresponding path program 8 times [2024-06-28 01:34:27,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:27,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182342891] [2024-06-28 01:34:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:27,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:28,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:28,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182342891] [2024-06-28 01:34:28,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182342891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:28,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:28,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381491548] [2024-06-28 01:34:28,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:28,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:28,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:28,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:28,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:28,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:28,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 396 transitions, 5594 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:28,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:28,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:28,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:29,715 INFO L124 PetriNetUnfolderBase]: 3096/5165 cut-off events. [2024-06-28 01:34:29,715 INFO L125 PetriNetUnfolderBase]: For 215789/215789 co-relation queries the response was YES. [2024-06-28 01:34:29,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35227 conditions, 5165 events. 3096/5165 cut-off events. For 215789/215789 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 33519 event pairs, 470 based on Foata normal form. 6/5116 useless extension candidates. Maximal degree in co-relation 35085. Up to 2116 conditions per place. [2024-06-28 01:34:29,777 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 297 selfloop transitions, 151 changer transitions 0/456 dead transitions. [2024-06-28 01:34:29,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 456 transitions, 7089 flow [2024-06-28 01:34:29,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 01:34:29,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-28 01:34:29,778 INFO L175 Difference]: Start difference. First operand has 300 places, 396 transitions, 5594 flow. Second operand 10 states and 198 transitions. [2024-06-28 01:34:29,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 456 transitions, 7089 flow [2024-06-28 01:34:30,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 456 transitions, 6750 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:30,954 INFO L231 Difference]: Finished difference. Result has 302 places, 396 transitions, 5568 flow [2024-06-28 01:34:30,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5255, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5568, PETRI_PLACES=302, PETRI_TRANSITIONS=396} [2024-06-28 01:34:30,954 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 259 predicate places. [2024-06-28 01:34:30,954 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 396 transitions, 5568 flow [2024-06-28 01:34:30,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:30,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:30,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:30,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:34:30,955 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:30,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash 781376271, now seen corresponding path program 9 times [2024-06-28 01:34:30,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:30,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372820936] [2024-06-28 01:34:30,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:31,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:31,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:31,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372820936] [2024-06-28 01:34:31,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372820936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:31,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:31,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:31,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586155522] [2024-06-28 01:34:31,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:31,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:31,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:31,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:31,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:31,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 396 transitions, 5568 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:31,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:31,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:31,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:33,050 INFO L124 PetriNetUnfolderBase]: 3114/5225 cut-off events. [2024-06-28 01:34:33,050 INFO L125 PetriNetUnfolderBase]: For 208705/208705 co-relation queries the response was YES. [2024-06-28 01:34:33,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35517 conditions, 5225 events. 3114/5225 cut-off events. For 208705/208705 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 34347 event pairs, 536 based on Foata normal form. 2/5170 useless extension candidates. Maximal degree in co-relation 35374. Up to 3963 conditions per place. [2024-06-28 01:34:33,110 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 306 selfloop transitions, 127 changer transitions 0/441 dead transitions. [2024-06-28 01:34:33,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 441 transitions, 7157 flow [2024-06-28 01:34:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:34:33,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-28 01:34:33,113 INFO L175 Difference]: Start difference. First operand has 302 places, 396 transitions, 5568 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:34:33,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 441 transitions, 7157 flow [2024-06-28 01:34:34,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 441 transitions, 6765 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:34:34,140 INFO L231 Difference]: Finished difference. Result has 302 places, 400 transitions, 5496 flow [2024-06-28 01:34:34,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5176, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5496, PETRI_PLACES=302, PETRI_TRANSITIONS=400} [2024-06-28 01:34:34,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 259 predicate places. [2024-06-28 01:34:34,141 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 400 transitions, 5496 flow [2024-06-28 01:34:34,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:34,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:34,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:34,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:34:34,141 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:34,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash 781578298, now seen corresponding path program 9 times [2024-06-28 01:34:34,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:34,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463529061] [2024-06-28 01:34:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:34,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:34,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:34,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463529061] [2024-06-28 01:34:34,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463529061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:34,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:34,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312708109] [2024-06-28 01:34:34,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:34,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:34,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:35,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:35,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 400 transitions, 5496 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:35,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:35,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:35,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:36,165 INFO L124 PetriNetUnfolderBase]: 3147/5311 cut-off events. [2024-06-28 01:34:36,165 INFO L125 PetriNetUnfolderBase]: For 213201/213201 co-relation queries the response was YES. [2024-06-28 01:34:36,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35238 conditions, 5311 events. 3147/5311 cut-off events. For 213201/213201 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 35081 event pairs, 839 based on Foata normal form. 3/5250 useless extension candidates. Maximal degree in co-relation 35094. Up to 2884 conditions per place. [2024-06-28 01:34:36,236 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 349 selfloop transitions, 105 changer transitions 0/462 dead transitions. [2024-06-28 01:34:36,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 462 transitions, 7038 flow [2024-06-28 01:34:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:36,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-28 01:34:36,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184149184149184 [2024-06-28 01:34:36,237 INFO L175 Difference]: Start difference. First operand has 302 places, 400 transitions, 5496 flow. Second operand 11 states and 211 transitions. [2024-06-28 01:34:36,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 462 transitions, 7038 flow [2024-06-28 01:34:37,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 462 transitions, 6752 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:37,521 INFO L231 Difference]: Finished difference. Result has 306 places, 403 transitions, 5481 flow [2024-06-28 01:34:37,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5212, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5481, PETRI_PLACES=306, PETRI_TRANSITIONS=403} [2024-06-28 01:34:37,522 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 263 predicate places. [2024-06-28 01:34:37,522 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 403 transitions, 5481 flow [2024-06-28 01:34:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:37,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:37,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:34:37,523 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:37,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash 781370691, now seen corresponding path program 10 times [2024-06-28 01:34:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560893821] [2024-06-28 01:34:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:38,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:38,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560893821] [2024-06-28 01:34:38,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560893821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:38,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:38,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032585670] [2024-06-28 01:34:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:38,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:38,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:38,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 403 transitions, 5481 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:38,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:38,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:38,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:39,461 INFO L124 PetriNetUnfolderBase]: 3143/5274 cut-off events. [2024-06-28 01:34:39,461 INFO L125 PetriNetUnfolderBase]: For 208810/208810 co-relation queries the response was YES. [2024-06-28 01:34:39,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35174 conditions, 5274 events. 3143/5274 cut-off events. For 208810/208810 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 34769 event pairs, 538 based on Foata normal form. 2/5218 useless extension candidates. Maximal degree in co-relation 35028. Up to 4010 conditions per place. [2024-06-28 01:34:39,531 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 303 selfloop transitions, 132 changer transitions 0/443 dead transitions. [2024-06-28 01:34:39,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 443 transitions, 6866 flow [2024-06-28 01:34:39,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:34:39,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-28 01:34:39,532 INFO L175 Difference]: Start difference. First operand has 306 places, 403 transitions, 5481 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:34:39,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 443 transitions, 6866 flow [2024-06-28 01:34:40,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 443 transitions, 6710 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:40,878 INFO L231 Difference]: Finished difference. Result has 311 places, 403 transitions, 5596 flow [2024-06-28 01:34:40,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5325, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5596, PETRI_PLACES=311, PETRI_TRANSITIONS=403} [2024-06-28 01:34:40,879 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 268 predicate places. [2024-06-28 01:34:40,879 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 403 transitions, 5596 flow [2024-06-28 01:34:40,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:40,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:40,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:40,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:34:40,880 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:40,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash 781370536, now seen corresponding path program 5 times [2024-06-28 01:34:40,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:40,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472142361] [2024-06-28 01:34:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:40,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:42,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:42,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472142361] [2024-06-28 01:34:42,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472142361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:42,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:42,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:42,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228967201] [2024-06-28 01:34:42,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:42,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:42,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:42,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:42,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:34:42,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 403 transitions, 5596 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) [2024-06-28 01:34:42,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:42,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:34:42,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:43,859 INFO L124 PetriNetUnfolderBase]: 2996/5219 cut-off events. [2024-06-28 01:34:43,860 INFO L125 PetriNetUnfolderBase]: For 211593/211597 co-relation queries the response was YES. [2024-06-28 01:34:43,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34451 conditions, 5219 events. 2996/5219 cut-off events. For 211593/211597 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 35715 event pairs, 549 based on Foata normal form. 1/5175 useless extension candidates. Maximal degree in co-relation 34304. Up to 4106 conditions per place. [2024-06-28 01:34:43,928 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 317 selfloop transitions, 64 changer transitions 0/443 dead transitions. [2024-06-28 01:34:43,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 443 transitions, 6579 flow [2024-06-28 01:34:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:34:43,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:34:43,929 INFO L175 Difference]: Start difference. First operand has 311 places, 403 transitions, 5596 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:34:43,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 443 transitions, 6579 flow [2024-06-28 01:34:45,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 443 transitions, 6305 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:45,432 INFO L231 Difference]: Finished difference. Result has 312 places, 405 transitions, 5490 flow [2024-06-28 01:34:45,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5322, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5490, PETRI_PLACES=312, PETRI_TRANSITIONS=405} [2024-06-28 01:34:45,433 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 269 predicate places. [2024-06-28 01:34:45,433 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 405 transitions, 5490 flow [2024-06-28 01:34:45,433 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) [2024-06-28 01:34:45,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:45,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:45,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:34:45,434 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:45,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:45,435 INFO L85 PathProgramCache]: Analyzing trace with hash 781376488, now seen corresponding path program 10 times [2024-06-28 01:34:45,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:45,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083354579] [2024-06-28 01:34:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:45,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:46,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:46,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083354579] [2024-06-28 01:34:46,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083354579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:46,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:46,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:46,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205959860] [2024-06-28 01:34:46,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:46,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:46,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:46,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:46,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:46,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 405 transitions, 5490 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:46,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:46,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:46,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:47,498 INFO L124 PetriNetUnfolderBase]: 3146/5301 cut-off events. [2024-06-28 01:34:47,498 INFO L125 PetriNetUnfolderBase]: For 211475/211475 co-relation queries the response was YES. [2024-06-28 01:34:47,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34956 conditions, 5301 events. 3146/5301 cut-off events. For 211475/211475 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 34935 event pairs, 822 based on Foata normal form. 3/5240 useless extension candidates. Maximal degree in co-relation 34808. Up to 2888 conditions per place. [2024-06-28 01:34:47,568 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 330 selfloop transitions, 119 changer transitions 0/457 dead transitions. [2024-06-28 01:34:47,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 457 transitions, 6806 flow [2024-06-28 01:34:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:34:47,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47785547785547783 [2024-06-28 01:34:47,569 INFO L175 Difference]: Start difference. First operand has 312 places, 405 transitions, 5490 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:34:47,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 457 transitions, 6806 flow [2024-06-28 01:34:48,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 457 transitions, 6652 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:48,880 INFO L231 Difference]: Finished difference. Result has 315 places, 405 transitions, 5579 flow [2024-06-28 01:34:48,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5579, PETRI_PLACES=315, PETRI_TRANSITIONS=405} [2024-06-28 01:34:48,881 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-28 01:34:48,881 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 405 transitions, 5579 flow [2024-06-28 01:34:48,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:48,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:48,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:48,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:34:48,882 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:48,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash 933816515, now seen corresponding path program 11 times [2024-06-28 01:34:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:48,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569741041] [2024-06-28 01:34:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:49,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:49,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569741041] [2024-06-28 01:34:49,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569741041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:49,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:49,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680650027] [2024-06-28 01:34:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:49,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:49,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:49,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:49,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 405 transitions, 5579 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:49,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:49,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:49,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:50,792 INFO L124 PetriNetUnfolderBase]: 3166/5280 cut-off events. [2024-06-28 01:34:50,792 INFO L125 PetriNetUnfolderBase]: For 215350/215350 co-relation queries the response was YES. [2024-06-28 01:34:50,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35677 conditions, 5280 events. 3166/5280 cut-off events. For 215350/215350 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34696 event pairs, 996 based on Foata normal form. 1/5216 useless extension candidates. Maximal degree in co-relation 35528. Up to 4779 conditions per place. [2024-06-28 01:34:50,862 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 400 selfloop transitions, 36 changer transitions 0/444 dead transitions. [2024-06-28 01:34:50,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 444 transitions, 7014 flow [2024-06-28 01:34:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:34:50,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441025641025641 [2024-06-28 01:34:50,863 INFO L175 Difference]: Start difference. First operand has 315 places, 405 transitions, 5579 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:34:50,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 444 transitions, 7014 flow [2024-06-28 01:34:52,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 444 transitions, 6858 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:52,260 INFO L231 Difference]: Finished difference. Result has 319 places, 409 transitions, 5566 flow [2024-06-28 01:34:52,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5423, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5566, PETRI_PLACES=319, PETRI_TRANSITIONS=409} [2024-06-28 01:34:52,261 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-28 01:34:52,261 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 409 transitions, 5566 flow [2024-06-28 01:34:52,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:52,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:52,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:34:52,262 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:52,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash -511753862, now seen corresponding path program 11 times [2024-06-28 01:34:52,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:52,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309102198] [2024-06-28 01:34:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:52,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:52,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309102198] [2024-06-28 01:34:52,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309102198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:52,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:52,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302208002] [2024-06-28 01:34:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:52,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:52,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:52,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:52,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:53,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:53,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 409 transitions, 5566 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:53,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:53,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:53,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:54,402 INFO L124 PetriNetUnfolderBase]: 3277/5543 cut-off events. [2024-06-28 01:34:54,402 INFO L125 PetriNetUnfolderBase]: For 247481/247481 co-relation queries the response was YES. [2024-06-28 01:34:54,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36938 conditions, 5543 events. 3277/5543 cut-off events. For 247481/247481 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 37196 event pairs, 962 based on Foata normal form. 3/5488 useless extension candidates. Maximal degree in co-relation 36788. Up to 4138 conditions per place. [2024-06-28 01:34:54,467 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 403 selfloop transitions, 59 changer transitions 0/470 dead transitions. [2024-06-28 01:34:54,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 470 transitions, 7328 flow [2024-06-28 01:34:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 01:34:54,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2024-06-28 01:34:54,468 INFO L175 Difference]: Start difference. First operand has 319 places, 409 transitions, 5566 flow. Second operand 10 states and 191 transitions. [2024-06-28 01:34:54,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 470 transitions, 7328 flow [2024-06-28 01:34:56,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 470 transitions, 7228 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:56,021 INFO L231 Difference]: Finished difference. Result has 322 places, 415 transitions, 5667 flow [2024-06-28 01:34:56,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5466, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5667, PETRI_PLACES=322, PETRI_TRANSITIONS=415} [2024-06-28 01:34:56,022 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-28 01:34:56,022 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 415 transitions, 5667 flow [2024-06-28 01:34:56,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:56,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:56,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:56,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:34:56,022 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:56,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:56,022 INFO L85 PathProgramCache]: Analyzing trace with hash -511486952, now seen corresponding path program 12 times [2024-06-28 01:34:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:56,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904504633] [2024-06-28 01:34:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:56,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:56,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:56,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904504633] [2024-06-28 01:34:56,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904504633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:56,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:56,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55265397] [2024-06-28 01:34:56,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:56,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:56,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:56,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:34:56,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 415 transitions, 5667 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:56,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:56,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:34:56,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:58,102 INFO L124 PetriNetUnfolderBase]: 3310/5605 cut-off events. [2024-06-28 01:34:58,102 INFO L125 PetriNetUnfolderBase]: For 253004/253004 co-relation queries the response was YES. [2024-06-28 01:34:58,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37521 conditions, 5605 events. 3310/5605 cut-off events. For 253004/253004 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 37729 event pairs, 974 based on Foata normal form. 3/5550 useless extension candidates. Maximal degree in co-relation 37370. Up to 4162 conditions per place. [2024-06-28 01:34:58,175 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 403 selfloop transitions, 59 changer transitions 0/470 dead transitions. [2024-06-28 01:34:58,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 470 transitions, 7212 flow [2024-06-28 01:34:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:34:58,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-28 01:34:58,176 INFO L175 Difference]: Start difference. First operand has 322 places, 415 transitions, 5667 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:34:58,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 470 transitions, 7212 flow [2024-06-28 01:34:59,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 470 transitions, 7117 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:59,829 INFO L231 Difference]: Finished difference. Result has 327 places, 417 transitions, 5727 flow [2024-06-28 01:34:59,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5578, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5727, PETRI_PLACES=327, PETRI_TRANSITIONS=417} [2024-06-28 01:34:59,829 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 284 predicate places. [2024-06-28 01:34:59,830 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 417 transitions, 5727 flow [2024-06-28 01:34:59,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:34:59,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:59,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:34:59,830 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:59,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash -503869094, now seen corresponding path program 13 times [2024-06-28 01:34:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270159378] [2024-06-28 01:34:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:00,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:00,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270159378] [2024-06-28 01:35:00,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270159378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:00,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:00,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235642238] [2024-06-28 01:35:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:00,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:00,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:00,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 417 transitions, 5727 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:00,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:00,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:00,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:02,016 INFO L124 PetriNetUnfolderBase]: 3304/5621 cut-off events. [2024-06-28 01:35:02,016 INFO L125 PetriNetUnfolderBase]: For 247219/247219 co-relation queries the response was YES. [2024-06-28 01:35:02,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37225 conditions, 5621 events. 3304/5621 cut-off events. For 247219/247219 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 37975 event pairs, 971 based on Foata normal form. 3/5567 useless extension candidates. Maximal degree in co-relation 37073. Up to 4158 conditions per place. [2024-06-28 01:35:02,091 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 410 selfloop transitions, 56 changer transitions 0/474 dead transitions. [2024-06-28 01:35:02,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 474 transitions, 7273 flow [2024-06-28 01:35:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 01:35:02,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2024-06-28 01:35:02,092 INFO L175 Difference]: Start difference. First operand has 327 places, 417 transitions, 5727 flow. Second operand 10 states and 191 transitions. [2024-06-28 01:35:02,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 474 transitions, 7273 flow [2024-06-28 01:35:03,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 474 transitions, 7165 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:03,621 INFO L231 Difference]: Finished difference. Result has 330 places, 417 transitions, 5738 flow [2024-06-28 01:35:03,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5738, PETRI_PLACES=330, PETRI_TRANSITIONS=417} [2024-06-28 01:35:03,622 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-28 01:35:03,622 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 417 transitions, 5738 flow [2024-06-28 01:35:03,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:03,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:03,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:03,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:35:03,622 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:03,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:03,622 INFO L85 PathProgramCache]: Analyzing trace with hash -518896262, now seen corresponding path program 14 times [2024-06-28 01:35:03,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:03,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495544690] [2024-06-28 01:35:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:03,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495544690] [2024-06-28 01:35:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495544690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:04,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584824171] [2024-06-28 01:35:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:04,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:04,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:04,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:04,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 417 transitions, 5738 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:04,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:04,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:04,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:05,766 INFO L124 PetriNetUnfolderBase]: 3337/5700 cut-off events. [2024-06-28 01:35:05,767 INFO L125 PetriNetUnfolderBase]: For 253505/253505 co-relation queries the response was YES. [2024-06-28 01:35:05,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37558 conditions, 5700 events. 3337/5700 cut-off events. For 253505/253505 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 38760 event pairs, 900 based on Foata normal form. 3/5650 useless extension candidates. Maximal degree in co-relation 37405. Up to 4182 conditions per place. [2024-06-28 01:35:05,847 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 402 selfloop transitions, 62 changer transitions 0/472 dead transitions. [2024-06-28 01:35:05,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 472 transitions, 7293 flow [2024-06-28 01:35:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:05,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:35:05,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 01:35:05,848 INFO L175 Difference]: Start difference. First operand has 330 places, 417 transitions, 5738 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:35:05,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 472 transitions, 7293 flow [2024-06-28 01:35:07,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 472 transitions, 7167 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:07,554 INFO L231 Difference]: Finished difference. Result has 331 places, 419 transitions, 5771 flow [2024-06-28 01:35:07,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5616, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5771, PETRI_PLACES=331, PETRI_TRANSITIONS=419} [2024-06-28 01:35:07,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 288 predicate places. [2024-06-28 01:35:07,555 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 419 transitions, 5771 flow [2024-06-28 01:35:07,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:07,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:07,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:07,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:35:07,555 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:07,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:07,555 INFO L85 PathProgramCache]: Analyzing trace with hash -518903919, now seen corresponding path program 12 times [2024-06-28 01:35:07,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:07,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673544871] [2024-06-28 01:35:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:07,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:08,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:08,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673544871] [2024-06-28 01:35:08,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673544871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:08,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:08,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431447613] [2024-06-28 01:35:08,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:08,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:08,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:08,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:08,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:08,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:08,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 419 transitions, 5771 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:08,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:08,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:08,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:09,713 INFO L124 PetriNetUnfolderBase]: 3346/5565 cut-off events. [2024-06-28 01:35:09,714 INFO L125 PetriNetUnfolderBase]: For 250986/250986 co-relation queries the response was YES. [2024-06-28 01:35:09,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37552 conditions, 5565 events. 3346/5565 cut-off events. For 250986/250986 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 36830 event pairs, 1036 based on Foata normal form. 1/5498 useless extension candidates. Maximal degree in co-relation 37398. Up to 5053 conditions per place. [2024-06-28 01:35:09,783 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 409 selfloop transitions, 39 changer transitions 0/456 dead transitions. [2024-06-28 01:35:09,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 456 transitions, 7213 flow [2024-06-28 01:35:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:35:09,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-28 01:35:09,784 INFO L175 Difference]: Start difference. First operand has 331 places, 419 transitions, 5771 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:35:09,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 456 transitions, 7213 flow [2024-06-28 01:35:11,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 456 transitions, 7093 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:11,533 INFO L231 Difference]: Finished difference. Result has 333 places, 421 transitions, 5763 flow [2024-06-28 01:35:11,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5651, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5763, PETRI_PLACES=333, PETRI_TRANSITIONS=421} [2024-06-28 01:35:11,534 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-06-28 01:35:11,534 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 421 transitions, 5763 flow [2024-06-28 01:35:11,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:11,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:11,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:11,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:35:11,535 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:11,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash -519111464, now seen corresponding path program 6 times [2024-06-28 01:35:11,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347227217] [2024-06-28 01:35:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:12,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:12,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347227217] [2024-06-28 01:35:12,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347227217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:12,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:12,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:12,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569181467] [2024-06-28 01:35:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:12,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:12,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:12,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:12,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:12,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:35:12,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 421 transitions, 5763 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) [2024-06-28 01:35:12,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:12,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:35:12,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:13,900 INFO L124 PetriNetUnfolderBase]: 3188/5516 cut-off events. [2024-06-28 01:35:13,900 INFO L125 PetriNetUnfolderBase]: For 251639/251707 co-relation queries the response was YES. [2024-06-28 01:35:13,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36301 conditions, 5516 events. 3188/5516 cut-off events. For 251639/251707 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 38024 event pairs, 964 based on Foata normal form. 1/5434 useless extension candidates. Maximal degree in co-relation 36146. Up to 4713 conditions per place. [2024-06-28 01:35:13,965 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 367 selfloop transitions, 21 changer transitions 0/453 dead transitions. [2024-06-28 01:35:13,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 453 transitions, 6719 flow [2024-06-28 01:35:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:35:13,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-28 01:35:13,966 INFO L175 Difference]: Start difference. First operand has 333 places, 421 transitions, 5763 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:35:13,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 453 transitions, 6719 flow [2024-06-28 01:35:15,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 453 transitions, 6644 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:15,758 INFO L231 Difference]: Finished difference. Result has 336 places, 423 transitions, 5773 flow [2024-06-28 01:35:15,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5688, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5773, PETRI_PLACES=336, PETRI_TRANSITIONS=423} [2024-06-28 01:35:15,759 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 293 predicate places. [2024-06-28 01:35:15,759 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 423 transitions, 5773 flow [2024-06-28 01:35:15,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:15,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:15,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:15,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:35:15,760 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:15,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash -519105729, now seen corresponding path program 13 times [2024-06-28 01:35:15,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:15,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145516470] [2024-06-28 01:35:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:16,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:16,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:16,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145516470] [2024-06-28 01:35:16,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145516470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:16,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:16,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:16,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893408845] [2024-06-28 01:35:16,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:16,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:16,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:16,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:16,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 423 transitions, 5773 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:16,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:16,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:16,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:17,849 INFO L124 PetriNetUnfolderBase]: 3354/5579 cut-off events. [2024-06-28 01:35:17,850 INFO L125 PetriNetUnfolderBase]: For 255237/255237 co-relation queries the response was YES. [2024-06-28 01:35:17,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37438 conditions, 5579 events. 3354/5579 cut-off events. For 255237/255237 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 36914 event pairs, 1037 based on Foata normal form. 1/5512 useless extension candidates. Maximal degree in co-relation 37282. Up to 5062 conditions per place. [2024-06-28 01:35:17,930 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 400 selfloop transitions, 49 changer transitions 0/457 dead transitions. [2024-06-28 01:35:17,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 457 transitions, 7210 flow [2024-06-28 01:35:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:17,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:35:17,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 01:35:17,931 INFO L175 Difference]: Start difference. First operand has 336 places, 423 transitions, 5773 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:35:17,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 457 transitions, 7210 flow [2024-06-28 01:35:19,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 457 transitions, 7141 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:19,897 INFO L231 Difference]: Finished difference. Result has 338 places, 425 transitions, 5836 flow [2024-06-28 01:35:19,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5704, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5836, PETRI_PLACES=338, PETRI_TRANSITIONS=425} [2024-06-28 01:35:19,897 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-06-28 01:35:19,897 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 425 transitions, 5836 flow [2024-06-28 01:35:19,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:19,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:19,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:19,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:35:19,898 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:19,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash -511233981, now seen corresponding path program 14 times [2024-06-28 01:35:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:19,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253070984] [2024-06-28 01:35:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:20,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:20,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253070984] [2024-06-28 01:35:20,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253070984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:20,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:20,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641761225] [2024-06-28 01:35:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:20,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:20,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:20,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:20,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:20,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 425 transitions, 5836 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:20,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:20,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:20,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:22,110 INFO L124 PetriNetUnfolderBase]: 3352/5573 cut-off events. [2024-06-28 01:35:22,110 INFO L125 PetriNetUnfolderBase]: For 256094/256094 co-relation queries the response was YES. [2024-06-28 01:35:22,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37445 conditions, 5573 events. 3352/5573 cut-off events. For 256094/256094 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 36885 event pairs, 1034 based on Foata normal form. 1/5505 useless extension candidates. Maximal degree in co-relation 37288. Up to 5060 conditions per place. [2024-06-28 01:35:22,190 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 395 selfloop transitions, 53 changer transitions 0/456 dead transitions. [2024-06-28 01:35:22,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 456 transitions, 7062 flow [2024-06-28 01:35:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:35:22,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149184149184149 [2024-06-28 01:35:22,191 INFO L175 Difference]: Start difference. First operand has 338 places, 425 transitions, 5836 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:35:22,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 456 transitions, 7062 flow [2024-06-28 01:35:23,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 456 transitions, 6858 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:23,912 INFO L231 Difference]: Finished difference. Result has 341 places, 425 transitions, 5743 flow [2024-06-28 01:35:23,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5632, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5743, PETRI_PLACES=341, PETRI_TRANSITIONS=425} [2024-06-28 01:35:23,913 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-28 01:35:23,913 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 425 transitions, 5743 flow [2024-06-28 01:35:23,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:23,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:23,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:23,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:35:23,913 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:23,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:23,913 INFO L85 PathProgramCache]: Analyzing trace with hash -519105512, now seen corresponding path program 15 times [2024-06-28 01:35:23,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:23,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366682774] [2024-06-28 01:35:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:24,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:24,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366682774] [2024-06-28 01:35:24,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366682774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:24,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:24,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211762262] [2024-06-28 01:35:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:24,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:24,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:24,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:24,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:24,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:24,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 425 transitions, 5743 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:24,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:24,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:24,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:26,153 INFO L124 PetriNetUnfolderBase]: 3385/5760 cut-off events. [2024-06-28 01:35:26,153 INFO L125 PetriNetUnfolderBase]: For 268755/268755 co-relation queries the response was YES. [2024-06-28 01:35:26,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37799 conditions, 5760 events. 3385/5760 cut-off events. For 268755/268755 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 39196 event pairs, 888 based on Foata normal form. 3/5710 useless extension candidates. Maximal degree in co-relation 37641. Up to 4230 conditions per place. [2024-06-28 01:35:26,231 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 378 selfloop transitions, 88 changer transitions 0/474 dead transitions. [2024-06-28 01:35:26,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 474 transitions, 7103 flow [2024-06-28 01:35:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:35:26,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-28 01:35:26,232 INFO L175 Difference]: Start difference. First operand has 341 places, 425 transitions, 5743 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:35:26,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 474 transitions, 7103 flow [2024-06-28 01:35:28,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 474 transitions, 7005 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:28,049 INFO L231 Difference]: Finished difference. Result has 342 places, 427 transitions, 5848 flow [2024-06-28 01:35:28,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5645, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5848, PETRI_PLACES=342, PETRI_TRANSITIONS=427} [2024-06-28 01:35:28,050 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 299 predicate places. [2024-06-28 01:35:28,050 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 427 transitions, 5848 flow [2024-06-28 01:35:28,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:28,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:28,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:28,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:35:28,050 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:28,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:28,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1447809996, now seen corresponding path program 16 times [2024-06-28 01:35:28,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:28,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342111878] [2024-06-28 01:35:28,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:28,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:28,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342111878] [2024-06-28 01:35:28,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342111878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:28,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:28,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:28,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741709000] [2024-06-28 01:35:28,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:28,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:28,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:28,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 427 transitions, 5848 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:28,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:28,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:28,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:30,243 INFO L124 PetriNetUnfolderBase]: 3379/5697 cut-off events. [2024-06-28 01:35:30,243 INFO L125 PetriNetUnfolderBase]: For 262092/262092 co-relation queries the response was YES. [2024-06-28 01:35:30,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37923 conditions, 5697 events. 3379/5697 cut-off events. For 262092/262092 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 38359 event pairs, 893 based on Foata normal form. 3/5646 useless extension candidates. Maximal degree in co-relation 37764. Up to 4226 conditions per place. [2024-06-28 01:35:30,327 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 406 selfloop transitions, 66 changer transitions 0/480 dead transitions. [2024-06-28 01:35:30,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 480 transitions, 7230 flow [2024-06-28 01:35:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:30,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-28 01:35:30,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 01:35:30,328 INFO L175 Difference]: Start difference. First operand has 342 places, 427 transitions, 5848 flow. Second operand 11 states and 198 transitions. [2024-06-28 01:35:30,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 480 transitions, 7230 flow [2024-06-28 01:35:31,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 480 transitions, 7096 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:31,973 INFO L231 Difference]: Finished difference. Result has 346 places, 427 transitions, 5851 flow [2024-06-28 01:35:31,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5714, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5851, PETRI_PLACES=346, PETRI_TRANSITIONS=427} [2024-06-28 01:35:31,974 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2024-06-28 01:35:31,974 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 427 transitions, 5851 flow [2024-06-28 01:35:31,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:31,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:31,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:31,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:35:31,974 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:31,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash 603426284, now seen corresponding path program 17 times [2024-06-28 01:35:31,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:31,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168093122] [2024-06-28 01:35:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:31,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:32,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:32,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168093122] [2024-06-28 01:35:32,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168093122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:32,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:32,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:32,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923288418] [2024-06-28 01:35:32,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:32,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:32,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:32,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 427 transitions, 5851 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:32,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:32,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:32,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:34,132 INFO L124 PetriNetUnfolderBase]: 3451/5832 cut-off events. [2024-06-28 01:35:34,132 INFO L125 PetriNetUnfolderBase]: For 282754/282754 co-relation queries the response was YES. [2024-06-28 01:35:34,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38964 conditions, 5832 events. 3451/5832 cut-off events. For 282754/282754 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 39401 event pairs, 1033 based on Foata normal form. 3/5774 useless extension candidates. Maximal degree in co-relation 38804. Up to 4886 conditions per place. [2024-06-28 01:35:34,215 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 435 selfloop transitions, 38 changer transitions 0/481 dead transitions. [2024-06-28 01:35:34,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 481 transitions, 7467 flow [2024-06-28 01:35:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:35:34,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:35:34,217 INFO L175 Difference]: Start difference. First operand has 346 places, 427 transitions, 5851 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:35:34,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 481 transitions, 7467 flow [2024-06-28 01:35:35,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 481 transitions, 7318 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:35:35,693 INFO L231 Difference]: Finished difference. Result has 346 places, 431 transitions, 5853 flow [2024-06-28 01:35:35,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5710, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5853, PETRI_PLACES=346, PETRI_TRANSITIONS=431} [2024-06-28 01:35:35,693 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2024-06-28 01:35:35,693 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 431 transitions, 5853 flow [2024-06-28 01:35:35,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:35,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:35,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:35,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:35:35,694 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:35,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:35,694 INFO L85 PathProgramCache]: Analyzing trace with hash 595289486, now seen corresponding path program 18 times [2024-06-28 01:35:35,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:35,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374268499] [2024-06-28 01:35:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:35,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:36,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:36,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374268499] [2024-06-28 01:35:36,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374268499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:36,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:36,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:36,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843910230] [2024-06-28 01:35:36,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:36,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:36,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:36,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:36,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:36,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:36,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 431 transitions, 5853 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:36,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:36,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:36,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:38,051 INFO L124 PetriNetUnfolderBase]: 3484/5891 cut-off events. [2024-06-28 01:35:38,051 INFO L125 PetriNetUnfolderBase]: For 287497/287497 co-relation queries the response was YES. [2024-06-28 01:35:38,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39030 conditions, 5891 events. 3484/5891 cut-off events. For 287497/287497 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 39916 event pairs, 993 based on Foata normal form. 3/5833 useless extension candidates. Maximal degree in co-relation 38869. Up to 4910 conditions per place. [2024-06-28 01:35:38,127 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 434 selfloop transitions, 41 changer transitions 0/483 dead transitions. [2024-06-28 01:35:38,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 483 transitions, 7443 flow [2024-06-28 01:35:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:35:38,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641025641025641 [2024-06-28 01:35:38,128 INFO L175 Difference]: Start difference. First operand has 346 places, 431 transitions, 5853 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:35:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 483 transitions, 7443 flow [2024-06-28 01:35:39,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 483 transitions, 7348 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:39,492 INFO L231 Difference]: Finished difference. Result has 349 places, 433 transitions, 5881 flow [2024-06-28 01:35:39,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5766, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5881, PETRI_PLACES=349, PETRI_TRANSITIONS=433} [2024-06-28 01:35:39,493 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-28 01:35:39,493 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 433 transitions, 5881 flow [2024-06-28 01:35:39,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:39,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:39,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:39,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:35:39,494 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:39,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:39,494 INFO L85 PathProgramCache]: Analyzing trace with hash 948899015, now seen corresponding path program 1 times [2024-06-28 01:35:39,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:39,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81866825] [2024-06-28 01:35:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:40,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:40,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81866825] [2024-06-28 01:35:40,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81866825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:40,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:40,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261789315] [2024-06-28 01:35:40,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:40,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:40,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:40,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:40,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 433 transitions, 5881 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:40,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:40,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:40,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:41,855 INFO L124 PetriNetUnfolderBase]: 3486/5794 cut-off events. [2024-06-28 01:35:41,855 INFO L125 PetriNetUnfolderBase]: For 278475/278475 co-relation queries the response was YES. [2024-06-28 01:35:41,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38727 conditions, 5794 events. 3486/5794 cut-off events. For 278475/278475 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 38410 event pairs, 1067 based on Foata normal form. 2/5727 useless extension candidates. Maximal degree in co-relation 38565. Up to 5397 conditions per place. [2024-06-28 01:35:41,936 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 435 selfloop transitions, 22 changer transitions 0/465 dead transitions. [2024-06-28 01:35:41,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 465 transitions, 6923 flow [2024-06-28 01:35:41,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:35:41,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282051282051282 [2024-06-28 01:35:41,937 INFO L175 Difference]: Start difference. First operand has 349 places, 433 transitions, 5881 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:35:41,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 465 transitions, 6923 flow [2024-06-28 01:35:43,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 465 transitions, 6818 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:43,702 INFO L231 Difference]: Finished difference. Result has 351 places, 435 transitions, 5853 flow [2024-06-28 01:35:43,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5776, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5853, PETRI_PLACES=351, PETRI_TRANSITIONS=435} [2024-06-28 01:35:43,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-28 01:35:43,703 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 435 transitions, 5853 flow [2024-06-28 01:35:43,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:43,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:43,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:43,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:35:43,704 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:43,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:43,704 INFO L85 PathProgramCache]: Analyzing trace with hash 944831144, now seen corresponding path program 19 times [2024-06-28 01:35:43,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:43,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124399990] [2024-06-28 01:35:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:43,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:44,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:44,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124399990] [2024-06-28 01:35:44,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124399990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:44,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:44,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808173435] [2024-06-28 01:35:44,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:44,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:44,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:44,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 435 transitions, 5853 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:44,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:44,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:44,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:45,915 INFO L124 PetriNetUnfolderBase]: 3480/5815 cut-off events. [2024-06-28 01:35:45,916 INFO L125 PetriNetUnfolderBase]: For 271090/271090 co-relation queries the response was YES. [2024-06-28 01:35:45,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38318 conditions, 5815 events. 3480/5815 cut-off events. For 271090/271090 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 38974 event pairs, 1054 based on Foata normal form. 3/5751 useless extension candidates. Maximal degree in co-relation 38155. Up to 5275 conditions per place. [2024-06-28 01:35:46,000 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 443 selfloop transitions, 25 changer transitions 0/476 dead transitions. [2024-06-28 01:35:46,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 476 transitions, 6967 flow [2024-06-28 01:35:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:35:46,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-06-28 01:35:46,003 INFO L175 Difference]: Start difference. First operand has 351 places, 435 transitions, 5853 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:35:46,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 476 transitions, 6967 flow [2024-06-28 01:35:47,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 476 transitions, 6902 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:47,609 INFO L231 Difference]: Finished difference. Result has 353 places, 435 transitions, 5845 flow [2024-06-28 01:35:47,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5788, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5845, PETRI_PLACES=353, PETRI_TRANSITIONS=435} [2024-06-28 01:35:47,609 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-28 01:35:47,610 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 435 transitions, 5845 flow [2024-06-28 01:35:47,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:47,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:47,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:47,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:35:47,610 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:47,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash 595282046, now seen corresponding path program 20 times [2024-06-28 01:35:47,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:47,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685238944] [2024-06-28 01:35:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:47,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:48,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685238944] [2024-06-28 01:35:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685238944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:48,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:48,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:48,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185336531] [2024-06-28 01:35:48,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:48,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:48,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:48,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:48,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 435 transitions, 5845 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:48,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:48,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:48,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:49,846 INFO L124 PetriNetUnfolderBase]: 3474/5821 cut-off events. [2024-06-28 01:35:49,846 INFO L125 PetriNetUnfolderBase]: For 261513/261513 co-relation queries the response was YES. [2024-06-28 01:35:49,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38050 conditions, 5821 events. 3474/5821 cut-off events. For 261513/261513 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 39126 event pairs, 984 based on Foata normal form. 3/5763 useless extension candidates. Maximal degree in co-relation 37886. Up to 4906 conditions per place. [2024-06-28 01:35:49,924 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 423 selfloop transitions, 49 changer transitions 0/480 dead transitions. [2024-06-28 01:35:49,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 480 transitions, 6995 flow [2024-06-28 01:35:49,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 01:35:49,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564102564102564 [2024-06-28 01:35:49,925 INFO L175 Difference]: Start difference. First operand has 353 places, 435 transitions, 5845 flow. Second operand 10 states and 178 transitions. [2024-06-28 01:35:49,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 480 transitions, 6995 flow [2024-06-28 01:35:51,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 480 transitions, 6918 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 01:35:51,528 INFO L231 Difference]: Finished difference. Result has 353 places, 435 transitions, 5871 flow [2024-06-28 01:35:51,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5768, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5871, PETRI_PLACES=353, PETRI_TRANSITIONS=435} [2024-06-28 01:35:51,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-28 01:35:51,529 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 435 transitions, 5871 flow [2024-06-28 01:35:51,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:51,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:51,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:35:51,530 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:51,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:51,530 INFO L85 PathProgramCache]: Analyzing trace with hash 595281829, now seen corresponding path program 15 times [2024-06-28 01:35:51,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:51,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264088761] [2024-06-28 01:35:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:51,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:52,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:52,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264088761] [2024-06-28 01:35:52,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264088761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:52,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:52,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558366748] [2024-06-28 01:35:52,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:52,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:52,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:52,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:52,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:52,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:52,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 435 transitions, 5871 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:52,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:52,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:52,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:53,614 INFO L124 PetriNetUnfolderBase]: 3472/5766 cut-off events. [2024-06-28 01:35:53,614 INFO L125 PetriNetUnfolderBase]: For 251954/251954 co-relation queries the response was YES. [2024-06-28 01:35:53,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38060 conditions, 5766 events. 3472/5766 cut-off events. For 251954/251954 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 38341 event pairs, 1087 based on Foata normal form. 1/5696 useless extension candidates. Maximal degree in co-relation 37895. Up to 5404 conditions per place. [2024-06-28 01:35:53,693 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 434 selfloop transitions, 22 changer transitions 0/464 dead transitions. [2024-06-28 01:35:53,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 464 transitions, 6915 flow [2024-06-28 01:35:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:35:53,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-28 01:35:53,694 INFO L175 Difference]: Start difference. First operand has 353 places, 435 transitions, 5871 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:35:53,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 464 transitions, 6915 flow [2024-06-28 01:35:55,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 464 transitions, 6748 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 01:35:55,492 INFO L231 Difference]: Finished difference. Result has 353 places, 435 transitions, 5753 flow [2024-06-28 01:35:55,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5704, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5753, PETRI_PLACES=353, PETRI_TRANSITIONS=435} [2024-06-28 01:35:55,493 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-28 01:35:55,493 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 435 transitions, 5753 flow [2024-06-28 01:35:55,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:55,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:55,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:55,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:35:55,493 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:55,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:55,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2059487918, now seen corresponding path program 21 times [2024-06-28 01:35:55,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:55,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353997705] [2024-06-28 01:35:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:55,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:56,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353997705] [2024-06-28 01:35:56,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353997705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:56,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:56,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:56,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568303029] [2024-06-28 01:35:56,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:56,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:56,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:56,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:56,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:35:56,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 435 transitions, 5753 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:35:56,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:56,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:35:56,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:58,459 INFO L124 PetriNetUnfolderBase]: 5449/9427 cut-off events. [2024-06-28 01:35:58,459 INFO L125 PetriNetUnfolderBase]: For 320106/320112 co-relation queries the response was YES. [2024-06-28 01:35:58,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56926 conditions, 9427 events. 5449/9427 cut-off events. For 320106/320112 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 72014 event pairs, 816 based on Foata normal form. 9/9310 useless extension candidates. Maximal degree in co-relation 56760. Up to 5730 conditions per place. [2024-06-28 01:35:58,603 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 610 selfloop transitions, 314 changer transitions 0/932 dead transitions. [2024-06-28 01:35:58,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 932 transitions, 14442 flow [2024-06-28 01:35:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 01:35:58,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988344988344988 [2024-06-28 01:35:58,604 INFO L175 Difference]: Start difference. First operand has 353 places, 435 transitions, 5753 flow. Second operand 11 states and 214 transitions. [2024-06-28 01:35:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 932 transitions, 14442 flow [2024-06-28 01:36:00,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 932 transitions, 14247 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 01:36:00,800 INFO L231 Difference]: Finished difference. Result has 358 places, 731 transitions, 10569 flow [2024-06-28 01:36:00,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10569, PETRI_PLACES=358, PETRI_TRANSITIONS=731} [2024-06-28 01:36:00,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 315 predicate places. [2024-06-28 01:36:00,801 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 731 transitions, 10569 flow [2024-06-28 01:36:00,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:00,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:00,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:00,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:36:00,802 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:00,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1043258652, now seen corresponding path program 22 times [2024-06-28 01:36:00,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:00,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882074162] [2024-06-28 01:36:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:00,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:01,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:01,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882074162] [2024-06-28 01:36:01,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882074162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:01,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:01,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:01,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521413596] [2024-06-28 01:36:01,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:01,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:01,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:01,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:01,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:01,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:36:01,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 731 transitions, 10569 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:01,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:01,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:36:01,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:04,315 INFO L124 PetriNetUnfolderBase]: 6124/10466 cut-off events. [2024-06-28 01:36:04,315 INFO L125 PetriNetUnfolderBase]: For 342073/342073 co-relation queries the response was YES. [2024-06-28 01:36:04,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71346 conditions, 10466 events. 6124/10466 cut-off events. For 342073/342073 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 80927 event pairs, 1224 based on Foata normal form. 3/10355 useless extension candidates. Maximal degree in co-relation 71173. Up to 5206 conditions per place. [2024-06-28 01:36:04,491 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 509 selfloop transitions, 508 changer transitions 0/1025 dead transitions. [2024-06-28 01:36:04,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 1025 transitions, 16992 flow [2024-06-28 01:36:04,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-28 01:36:04,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034965034965035 [2024-06-28 01:36:04,492 INFO L175 Difference]: Start difference. First operand has 358 places, 731 transitions, 10569 flow. Second operand 11 states and 216 transitions. [2024-06-28 01:36:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 1025 transitions, 16992 flow [2024-06-28 01:36:07,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 1025 transitions, 16873 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-06-28 01:36:07,148 INFO L231 Difference]: Finished difference. Result has 373 places, 879 transitions, 14581 flow [2024-06-28 01:36:07,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10518, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14581, PETRI_PLACES=373, PETRI_TRANSITIONS=879} [2024-06-28 01:36:07,149 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-28 01:36:07,149 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 879 transitions, 14581 flow [2024-06-28 01:36:07,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:07,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:07,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:07,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:36:07,150 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:07,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1774748256, now seen corresponding path program 23 times [2024-06-28 01:36:07,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:07,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088391963] [2024-06-28 01:36:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:07,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:07,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:07,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088391963] [2024-06-28 01:36:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088391963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:07,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:07,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:07,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867528705] [2024-06-28 01:36:07,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:07,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:07,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:36:07,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 879 transitions, 14581 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:07,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:07,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:36:07,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:10,837 INFO L124 PetriNetUnfolderBase]: 6325/10810 cut-off events. [2024-06-28 01:36:10,837 INFO L125 PetriNetUnfolderBase]: For 351806/351806 co-relation queries the response was YES. [2024-06-28 01:36:10,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79350 conditions, 10810 events. 6325/10810 cut-off events. For 351806/351806 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 84285 event pairs, 1110 based on Foata normal form. 3/10697 useless extension candidates. Maximal degree in co-relation 79169. Up to 7809 conditions per place. [2024-06-28 01:36:11,020 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 754 selfloop transitions, 433 changer transitions 0/1195 dead transitions. [2024-06-28 01:36:11,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1195 transitions, 22330 flow [2024-06-28 01:36:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 01:36:11,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-28 01:36:11,021 INFO L175 Difference]: Start difference. First operand has 373 places, 879 transitions, 14581 flow. Second operand 11 states and 209 transitions. [2024-06-28 01:36:11,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1195 transitions, 22330 flow [2024-06-28 01:36:14,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1195 transitions, 21784 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:14,654 INFO L231 Difference]: Finished difference. Result has 386 places, 1059 transitions, 19224 flow [2024-06-28 01:36:14,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=14131, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19224, PETRI_PLACES=386, PETRI_TRANSITIONS=1059} [2024-06-28 01:36:14,655 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 343 predicate places. [2024-06-28 01:36:14,655 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 1059 transitions, 19224 flow [2024-06-28 01:36:14,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:14,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:14,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:14,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:36:14,656 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:14,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2034165641, now seen corresponding path program 16 times [2024-06-28 01:36:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103694004] [2024-06-28 01:36:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:14,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:15,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103694004] [2024-06-28 01:36:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103694004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:15,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:15,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:15,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974947349] [2024-06-28 01:36:15,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:15,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:15,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:15,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:15,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:36:15,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1059 transitions, 19224 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:15,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:15,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:36:15,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:19,895 INFO L124 PetriNetUnfolderBase]: 6676/12221 cut-off events. [2024-06-28 01:36:19,895 INFO L125 PetriNetUnfolderBase]: For 380154/380154 co-relation queries the response was YES. [2024-06-28 01:36:20,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89283 conditions, 12221 events. 6676/12221 cut-off events. For 380154/380154 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 103062 event pairs, 1048 based on Foata normal form. 1/12150 useless extension candidates. Maximal degree in co-relation 89096. Up to 8850 conditions per place. [2024-06-28 01:36:20,103 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1095 selfloop transitions, 309 changer transitions 0/1412 dead transitions. [2024-06-28 01:36:20,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1412 transitions, 26387 flow [2024-06-28 01:36:20,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-28 01:36:20,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-28 01:36:20,104 INFO L175 Difference]: Start difference. First operand has 386 places, 1059 transitions, 19224 flow. Second operand 11 states and 202 transitions. [2024-06-28 01:36:20,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1412 transitions, 26387 flow [2024-06-28 01:36:24,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1412 transitions, 25954 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-28 01:36:24,189 INFO L231 Difference]: Finished difference. Result has 397 places, 1308 transitions, 23066 flow [2024-06-28 01:36:24,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18903, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23066, PETRI_PLACES=397, PETRI_TRANSITIONS=1308} [2024-06-28 01:36:24,190 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-28 01:36:24,190 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 1308 transitions, 23066 flow [2024-06-28 01:36:24,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:24,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:24,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:24,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:36:24,191 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:24,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:24,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2091387038, now seen corresponding path program 24 times [2024-06-28 01:36:24,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:24,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580413356] [2024-06-28 01:36:24,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:24,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:24,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:24,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:24,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580413356] [2024-06-28 01:36:24,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580413356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:24,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:24,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:24,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169795356] [2024-06-28 01:36:24,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:24,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:24,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:25,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:36:25,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 1308 transitions, 23066 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:25,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:25,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:36:25,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:29,898 INFO L124 PetriNetUnfolderBase]: 6817/12247 cut-off events. [2024-06-28 01:36:29,898 INFO L125 PetriNetUnfolderBase]: For 383675/383675 co-relation queries the response was YES. [2024-06-28 01:36:30,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92324 conditions, 12247 events. 6817/12247 cut-off events. For 383675/383675 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 101810 event pairs, 1216 based on Foata normal form. 3/12209 useless extension candidates. Maximal degree in co-relation 92129. Up to 7300 conditions per place. [2024-06-28 01:36:30,102 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 914 selfloop transitions, 513 changer transitions 0/1435 dead transitions. [2024-06-28 01:36:30,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1435 transitions, 27638 flow [2024-06-28 01:36:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 01:36:30,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011655011655012 [2024-06-28 01:36:30,104 INFO L175 Difference]: Start difference. First operand has 397 places, 1308 transitions, 23066 flow. Second operand 11 states and 215 transitions. [2024-06-28 01:36:30,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1435 transitions, 27638 flow [2024-06-28 01:36:34,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 1435 transitions, 27561 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-28 01:36:34,412 INFO L231 Difference]: Finished difference. Result has 408 places, 1333 transitions, 24575 flow [2024-06-28 01:36:34,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=22993, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24575, PETRI_PLACES=408, PETRI_TRANSITIONS=1333} [2024-06-28 01:36:34,413 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-06-28 01:36:34,413 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 1333 transitions, 24575 flow [2024-06-28 01:36:34,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:34,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:34,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:34,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:36:34,414 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:34,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:34,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1187350992, now seen corresponding path program 25 times [2024-06-28 01:36:34,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:34,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888474834] [2024-06-28 01:36:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:34,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:35,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:35,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888474834] [2024-06-28 01:36:35,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888474834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:35,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:35,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:35,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397032489] [2024-06-28 01:36:35,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:35,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:35,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:35,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:35,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:35,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:36:35,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 1333 transitions, 24575 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:35,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:35,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:36:35,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:40,227 INFO L124 PetriNetUnfolderBase]: 6811/12217 cut-off events. [2024-06-28 01:36:40,227 INFO L125 PetriNetUnfolderBase]: For 384281/384281 co-relation queries the response was YES. [2024-06-28 01:36:40,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94880 conditions, 12217 events. 6811/12217 cut-off events. For 384281/384281 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 101350 event pairs, 1286 based on Foata normal form. 3/12163 useless extension candidates. Maximal degree in co-relation 94681. Up to 5954 conditions per place. [2024-06-28 01:36:40,447 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 861 selfloop transitions, 618 changer transitions 0/1487 dead transitions. [2024-06-28 01:36:40,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1487 transitions, 29671 flow [2024-06-28 01:36:40,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 01:36:40,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104895104895105 [2024-06-28 01:36:40,448 INFO L175 Difference]: Start difference. First operand has 408 places, 1333 transitions, 24575 flow. Second operand 11 states and 219 transitions. [2024-06-28 01:36:40,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 1487 transitions, 29671 flow [2024-06-28 01:36:44,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1487 transitions, 28943 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:36:44,430 INFO L231 Difference]: Finished difference. Result has 416 places, 1340 transitions, 25550 flow [2024-06-28 01:36:44,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=23884, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=611, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25550, PETRI_PLACES=416, PETRI_TRANSITIONS=1340} [2024-06-28 01:36:44,431 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 373 predicate places. [2024-06-28 01:36:44,431 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 1340 transitions, 25550 flow [2024-06-28 01:36:44,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:44,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:44,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:44,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:36:44,432 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:44,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1187143385, now seen corresponding path program 17 times [2024-06-28 01:36:44,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:44,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654317391] [2024-06-28 01:36:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:44,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:45,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:45,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654317391] [2024-06-28 01:36:45,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654317391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:45,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:45,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:45,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880507429] [2024-06-28 01:36:45,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:45,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:45,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:45,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:45,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:45,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:36:45,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 1340 transitions, 25550 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:45,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:45,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:36:45,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:50,307 INFO L124 PetriNetUnfolderBase]: 6964/12617 cut-off events. [2024-06-28 01:36:50,307 INFO L125 PetriNetUnfolderBase]: For 390173/390173 co-relation queries the response was YES. [2024-06-28 01:36:50,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98426 conditions, 12617 events. 6964/12617 cut-off events. For 390173/390173 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 105990 event pairs, 1198 based on Foata normal form. 1/12533 useless extension candidates. Maximal degree in co-relation 98224. Up to 9064 conditions per place. [2024-06-28 01:36:50,530 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 1070 selfloop transitions, 484 changer transitions 0/1562 dead transitions. [2024-06-28 01:36:50,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 1562 transitions, 31334 flow [2024-06-28 01:36:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:36:50,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-28 01:36:50,531 INFO L175 Difference]: Start difference. First operand has 416 places, 1340 transitions, 25550 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:36:50,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 1562 transitions, 31334 flow [2024-06-28 01:36:54,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1562 transitions, 30383 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:36:54,689 INFO L231 Difference]: Finished difference. Result has 427 places, 1472 transitions, 27983 flow [2024-06-28 01:36:54,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=24608, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=352, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=928, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=27983, PETRI_PLACES=427, PETRI_TRANSITIONS=1472} [2024-06-28 01:36:54,689 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-28 01:36:54,690 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 1472 transitions, 27983 flow [2024-06-28 01:36:54,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:54,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:54,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:54,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:36:54,690 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:54,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:54,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1288918462, now seen corresponding path program 26 times [2024-06-28 01:36:54,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:54,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445041994] [2024-06-28 01:36:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:55,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:55,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445041994] [2024-06-28 01:36:55,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445041994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:55,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:55,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:55,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476105536] [2024-06-28 01:36:55,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:55,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:55,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:55,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:36:55,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1472 transitions, 27983 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:36:55,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:55,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:36:55,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:00,822 INFO L124 PetriNetUnfolderBase]: 7185/12844 cut-off events. [2024-06-28 01:37:00,822 INFO L125 PetriNetUnfolderBase]: For 409138/409138 co-relation queries the response was YES. [2024-06-28 01:37:01,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100789 conditions, 12844 events. 7185/12844 cut-off events. For 409138/409138 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 106985 event pairs, 1325 based on Foata normal form. 3/12803 useless extension candidates. Maximal degree in co-relation 100580. Up to 6363 conditions per place. [2024-06-28 01:37:01,304 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 966 selfloop transitions, 653 changer transitions 0/1627 dead transitions. [2024-06-28 01:37:01,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1627 transitions, 33503 flow [2024-06-28 01:37:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:37:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:37:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 01:37:01,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081585081585082 [2024-06-28 01:37:01,305 INFO L175 Difference]: Start difference. First operand has 427 places, 1472 transitions, 27983 flow. Second operand 11 states and 218 transitions. [2024-06-28 01:37:01,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 1627 transitions, 33503 flow [2024-06-28 01:37:05,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 1627 transitions, 32995 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:05,156 INFO L231 Difference]: Finished difference. Result has 437 places, 1511 transitions, 29929 flow [2024-06-28 01:37:05,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=27487, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=853, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=29929, PETRI_PLACES=437, PETRI_TRANSITIONS=1511} [2024-06-28 01:37:05,157 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-28 01:37:05,157 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 1511 transitions, 29929 flow [2024-06-28 01:37:05,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:37:05,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:05,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:05,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:37:05,157 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:05,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:05,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2055397010, now seen corresponding path program 27 times [2024-06-28 01:37:05,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:05,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967789897] [2024-06-28 01:37:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:05,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:05,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:05,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967789897] [2024-06-28 01:37:05,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967789897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:05,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:05,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:37:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394261239] [2024-06-28 01:37:05,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:05,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:37:05,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:37:05,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:37:05,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2024-06-28 01:37:05,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1511 transitions, 29929 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:37:05,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:05,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2024-06-28 01:37:05,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:11,689 INFO L124 PetriNetUnfolderBase]: 7179/12857 cut-off events. [2024-06-28 01:37:11,689 INFO L125 PetriNetUnfolderBase]: For 418772/418772 co-relation queries the response was YES. [2024-06-28 01:37:11,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103804 conditions, 12857 events. 7179/12857 cut-off events. For 418772/418772 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 107352 event pairs, 1366 based on Foata normal form. 3/12816 useless extension candidates. Maximal degree in co-relation 103591. Up to 6359 conditions per place. [2024-06-28 01:37:11,898 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 1009 selfloop transitions, 631 changer transitions 0/1648 dead transitions. [2024-06-28 01:37:11,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1648 transitions, 34738 flow [2024-06-28 01:37:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:37:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:37:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-28 01:37:11,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-06-28 01:37:11,900 INFO L175 Difference]: Start difference. First operand has 437 places, 1511 transitions, 29929 flow. Second operand 11 states and 222 transitions. [2024-06-28 01:37:11,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1648 transitions, 34738 flow [2024-06-28 01:37:15,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1648 transitions, 34062 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:15,764 INFO L231 Difference]: Finished difference. Result has 444 places, 1513 transitions, 30613 flow [2024-06-28 01:37:15,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=29255, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=629, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30613, PETRI_PLACES=444, PETRI_TRANSITIONS=1513} [2024-06-28 01:37:15,765 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 401 predicate places. [2024-06-28 01:37:15,765 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1513 transitions, 30613 flow [2024-06-28 01:37:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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) [2024-06-28 01:37:15,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:15,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:15,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:37:15,766 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:15,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash -90163461, now seen corresponding path program 1 times [2024-06-28 01:37:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626143027] [2024-06-28 01:37:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:16,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:16,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626143027] [2024-06-28 01:37:16,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626143027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:16,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:16,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:37:16,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503678035] [2024-06-28 01:37:16,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:16,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:37:16,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:16,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:37:16,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:37:17,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 01:37:17,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1513 transitions, 30613 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) [2024-06-28 01:37:17,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:17,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 01:37:17,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand