./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix011.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix011.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix011.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix011.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:17:11,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:17:11,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:17:11,371 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:17:11,372 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:17:11,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:17:11,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:17:11,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:17:11,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:17:11,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:17:11,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:17:11,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:17:11,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:17:11,393 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:17:11,394 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:17:11,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:17:11,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:17:11,394 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:17:11,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:17:11,395 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:17:11,395 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:17:11,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:17:11,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:17:11,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:17:11,396 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:17:11,396 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:17:11,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:17:11,397 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:17:11,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:17:11,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:17:11,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:17:11,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:17:11,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:17:11,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:17:11,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:17:11,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:17:11,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:17:11,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:17:11,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:17:11,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:17:11,401 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:17:11,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:17:11,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:17:11,401 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:17:11,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:17:11,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:17:11,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:17:11,617 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:17:11,618 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:17:11,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix011.opt.yml/witness.yml [2024-06-27 18:17:11,796 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:17:11,797 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:17:11,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix011.opt.i [2024-06-27 18:17:12,804 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:17:13,050 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:17:13,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix011.opt.i [2024-06-27 18:17:13,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4055dbdd0/d62c722ec7434cb1a815c7fe67e86857/FLAG2876a6314 [2024-06-27 18:17:13,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4055dbdd0/d62c722ec7434cb1a815c7fe67e86857 [2024-06-27 18:17:13,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:17:13,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:17:13,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:17:13,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:17:13,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:17:13,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:17:11" (1/2) ... [2024-06-27 18:17:13,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbcc28b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:17:13, skipping insertion in model container [2024-06-27 18:17:13,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:17:11" (1/2) ... [2024-06-27 18:17:13,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66e7661f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:17:13, skipping insertion in model container [2024-06-27 18:17:13,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:17:13" (2/2) ... [2024-06-27 18:17:13,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbcc28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13, skipping insertion in model container [2024-06-27 18:17:13,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:17:13" (2/2) ... [2024-06-27 18:17:13,086 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:17:13,204 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:17:13,205 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:17:13,205 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] ((((((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:17:13,206 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || z$read_delayed_var == 0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:17:13,206 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:17:13,206 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-27 18:17:13,243 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:17:13,390 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/mix011.opt.i[944,957] [2024-06-27 18:17:13,540 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:17:13,551 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:17:13,584 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/mix011.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:17:13,676 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:17:13,731 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:17:13,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13 WrapperNode [2024-06-27 18:17:13,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:17:13,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:17:13,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:17:13,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:17:13,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,799 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2024-06-27 18:17:13,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:17:13,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:17:13,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:17:13,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:17:13,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,813 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,825 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:17:13,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:17:13,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:17:13,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:17:13,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:17:13,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (1/1) ... [2024-06-27 18:17:13,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:17:13,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:17:13,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:17:13,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:17:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:17:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:17:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:17:13,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:17:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:17:13,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:17:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:17:13,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:17:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:17:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:17:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:17:13,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:17:13,896 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:17:13,985 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:17:13,986 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:17:14,306 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:17:14,307 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:17:14,446 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:17:14,446 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:17:14,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:17:14 BoogieIcfgContainer [2024-06-27 18:17:14,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:17:14,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:17:14,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:17:14,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:17:14,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:17:11" (1/4) ... [2024-06-27 18:17:14,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a64bb6d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:17:14, skipping insertion in model container [2024-06-27 18:17:14,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:17:13" (2/4) ... [2024-06-27 18:17:14,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a64bb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:17:14, skipping insertion in model container [2024-06-27 18:17:14,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:17:13" (3/4) ... [2024-06-27 18:17:14,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a64bb6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:17:14, skipping insertion in model container [2024-06-27 18:17:14,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:17:14" (4/4) ... [2024-06-27 18:17:14,456 INFO L112 eAbstractionObserver]: Analyzing ICFG mix011.opt.i [2024-06-27 18:17:14,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:17:14,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:17:14,470 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:17:14,507 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:17:14,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:17:14,560 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 18:17:14,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:17:14,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-27 18:17:14,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-27 18:17:14,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-27 18:17:14,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:17:14,577 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;@212d62aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:17:14,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:17:14,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:17:14,580 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:17:14,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:17:14,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:14,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:17:14,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:14,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:14,614 INFO L85 PathProgramCache]: Analyzing trace with hash 368048057, now seen corresponding path program 1 times [2024-06-27 18:17:14,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:14,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477097199] [2024-06-27 18:17:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:15,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:15,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:15,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477097199] [2024-06-27 18:17:15,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477097199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:15,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:15,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:17:15,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834570800] [2024-06-27 18:17:15,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:15,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:17:15,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:15,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:17:15,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:17:15,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-27 18:17:15,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:15,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:15,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-27 18:17:15,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:16,529 INFO L124 PetriNetUnfolderBase]: 3657/6135 cut-off events. [2024-06-27 18:17:16,530 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-27 18:17:16,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11477 conditions, 6135 events. 3657/6135 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 41435 event pairs, 2984 based on Foata normal form. 181/5824 useless extension candidates. Maximal degree in co-relation 11465. Up to 5253 conditions per place. [2024-06-27 18:17:16,561 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-27 18:17:16,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 227 flow [2024-06-27 18:17:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:17:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:17:16,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 18:17:16,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6938775510204082 [2024-06-27 18:17:16,571 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 102 transitions. [2024-06-27 18:17:16,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 227 flow [2024-06-27 18:17:16,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:16,578 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-27 18:17:16,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-27 18:17:16,582 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-27 18:17:16,583 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-27 18:17:16,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:16,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:16,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:16,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:17:16,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:16,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:16,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1506998672, now seen corresponding path program 1 times [2024-06-27 18:17:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:16,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438043860] [2024-06-27 18:17:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:16,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:17,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:17,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438043860] [2024-06-27 18:17:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438043860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:17:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872574347] [2024-06-27 18:17:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:17,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:17:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:17:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:17:17,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:17:17,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:17,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:17,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:17:17,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:18,146 INFO L124 PetriNetUnfolderBase]: 4173/6890 cut-off events. [2024-06-27 18:17:18,147 INFO L125 PetriNetUnfolderBase]: For 929/929 co-relation queries the response was YES. [2024-06-27 18:17:18,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14330 conditions, 6890 events. 4173/6890 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 45943 event pairs, 3007 based on Foata normal form. 3/6433 useless extension candidates. Maximal degree in co-relation 14318. Up to 5953 conditions per place. [2024-06-27 18:17:18,178 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 53 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-27 18:17:18,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 323 flow [2024-06-27 18:17:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:17:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:17:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-27 18:17:18,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581632653061225 [2024-06-27 18:17:18,180 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 4 states and 129 transitions. [2024-06-27 18:17:18,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 323 flow [2024-06-27 18:17:18,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:17:18,182 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 179 flow [2024-06-27 18:17:18,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 18:17:18,183 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-27 18:17:18,183 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 179 flow [2024-06-27 18:17:18,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:18,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:18,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:18,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:17:18,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:18,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:18,185 INFO L85 PathProgramCache]: Analyzing trace with hash -527680774, now seen corresponding path program 1 times [2024-06-27 18:17:18,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:18,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457715002] [2024-06-27 18:17:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:18,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:19,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:19,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457715002] [2024-06-27 18:17:19,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457715002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:19,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:19,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:17:19,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160559495] [2024-06-27 18:17:19,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:19,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:17:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:19,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:17:19,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:17:19,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:17:19,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:19,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:19,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:17:19,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:19,880 INFO L124 PetriNetUnfolderBase]: 4199/6276 cut-off events. [2024-06-27 18:17:19,881 INFO L125 PetriNetUnfolderBase]: For 2366/2366 co-relation queries the response was YES. [2024-06-27 18:17:19,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15122 conditions, 6276 events. 4199/6276 cut-off events. For 2366/2366 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 37128 event pairs, 1488 based on Foata normal form. 5/6059 useless extension candidates. Maximal degree in co-relation 15108. Up to 5877 conditions per place. [2024-06-27 18:17:19,911 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 70 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-27 18:17:19,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 523 flow [2024-06-27 18:17:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:17:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:17:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-27 18:17:19,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-06-27 18:17:19,913 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 179 flow. Second operand 5 states and 168 transitions. [2024-06-27 18:17:19,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 523 flow [2024-06-27 18:17:19,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 504 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:19,916 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 308 flow [2024-06-27 18:17:19,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2024-06-27 18:17:19,917 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-06-27 18:17:19,917 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 308 flow [2024-06-27 18:17:19,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:19,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:19,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:19,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:17:19,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:19,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash 564408113, now seen corresponding path program 1 times [2024-06-27 18:17:19,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:19,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934950869] [2024-06-27 18:17:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:19,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:21,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:21,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934950869] [2024-06-27 18:17:21,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934950869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:21,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:21,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:17:21,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007228363] [2024-06-27 18:17:21,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:21,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:17:21,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:21,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:17:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:17:21,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-06-27 18:17:21,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:21,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:21,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-06-27 18:17:21,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:22,496 INFO L124 PetriNetUnfolderBase]: 4243/7060 cut-off events. [2024-06-27 18:17:22,497 INFO L125 PetriNetUnfolderBase]: For 6434/6436 co-relation queries the response was YES. [2024-06-27 18:17:22,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18562 conditions, 7060 events. 4243/7060 cut-off events. For 6434/6436 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 47565 event pairs, 1874 based on Foata normal form. 12/6606 useless extension candidates. Maximal degree in co-relation 18545. Up to 5853 conditions per place. [2024-06-27 18:17:22,538 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 78 selfloop transitions, 25 changer transitions 0/116 dead transitions. [2024-06-27 18:17:22,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 116 transitions, 664 flow [2024-06-27 18:17:22,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-06-27 18:17:22,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:17:22,541 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 308 flow. Second operand 6 states and 196 transitions. [2024-06-27 18:17:22,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 116 transitions, 664 flow [2024-06-27 18:17:22,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 116 transitions, 652 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:17:22,548 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 383 flow [2024-06-27 18:17:22,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-27 18:17:22,550 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-27 18:17:22,550 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 383 flow [2024-06-27 18:17:22,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:22,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:22,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:22,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:17:22,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:22,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:22,551 INFO L85 PathProgramCache]: Analyzing trace with hash 416766308, now seen corresponding path program 1 times [2024-06-27 18:17:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:22,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113191437] [2024-06-27 18:17:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:22,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:23,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:23,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:23,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113191437] [2024-06-27 18:17:23,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113191437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:23,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:23,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:17:23,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027710381] [2024-06-27 18:17:23,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:23,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:17:23,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:23,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:17:23,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:17:23,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:17:23,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:23,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:23,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:17:23,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:24,010 INFO L124 PetriNetUnfolderBase]: 4248/6493 cut-off events. [2024-06-27 18:17:24,010 INFO L125 PetriNetUnfolderBase]: For 8356/8356 co-relation queries the response was YES. [2024-06-27 18:17:24,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19569 conditions, 6493 events. 4248/6493 cut-off events. For 8356/8356 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39161 event pairs, 1370 based on Foata normal form. 2/6215 useless extension candidates. Maximal degree in co-relation 19548. Up to 6056 conditions per place. [2024-06-27 18:17:24,048 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 69 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-06-27 18:17:24,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 589 flow [2024-06-27 18:17:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:17:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:17:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-06-27 18:17:24,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563265306122449 [2024-06-27 18:17:24,049 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 383 flow. Second operand 5 states and 138 transitions. [2024-06-27 18:17:24,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 589 flow [2024-06-27 18:17:24,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 520 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:24,056 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 343 flow [2024-06-27 18:17:24,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-06-27 18:17:24,057 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-06-27 18:17:24,057 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 343 flow [2024-06-27 18:17:24,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:24,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:24,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:24,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:17:24,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:24,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash -10379894, now seen corresponding path program 1 times [2024-06-27 18:17:24,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:24,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148418123] [2024-06-27 18:17:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:24,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:24,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:24,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148418123] [2024-06-27 18:17:24,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148418123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:24,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:24,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413050033] [2024-06-27 18:17:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:24,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:24,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:24,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:24,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:24,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:24,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:25,720 INFO L124 PetriNetUnfolderBase]: 4987/7448 cut-off events. [2024-06-27 18:17:25,720 INFO L125 PetriNetUnfolderBase]: For 10217/10217 co-relation queries the response was YES. [2024-06-27 18:17:25,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22102 conditions, 7448 events. 4987/7448 cut-off events. For 10217/10217 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 43529 event pairs, 1658 based on Foata normal form. 2/7143 useless extension candidates. Maximal degree in co-relation 22079. Up to 7074 conditions per place. [2024-06-27 18:17:25,760 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 79 selfloop transitions, 14 changer transitions 0/104 dead transitions. [2024-06-27 18:17:25,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 104 transitions, 625 flow [2024-06-27 18:17:25,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 18:17:25,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 18:17:25,762 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 343 flow. Second operand 6 states and 161 transitions. [2024-06-27 18:17:25,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 104 transitions, 625 flow [2024-06-27 18:17:25,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 104 transitions, 596 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:25,771 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 387 flow [2024-06-27 18:17:25,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2024-06-27 18:17:25,772 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-06-27 18:17:25,772 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 387 flow [2024-06-27 18:17:25,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:25,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:25,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:25,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:17:25,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:25,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash -10600720, now seen corresponding path program 1 times [2024-06-27 18:17:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699727722] [2024-06-27 18:17:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:25,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:25,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699727722] [2024-06-27 18:17:25,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699727722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:25,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:25,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:17:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204795288] [2024-06-27 18:17:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:25,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:17:25,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:17:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:17:25,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 49 [2024-06-27 18:17:25,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:25,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:25,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 49 [2024-06-27 18:17:25,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:26,069 INFO L124 PetriNetUnfolderBase]: 1290/2598 cut-off events. [2024-06-27 18:17:26,069 INFO L125 PetriNetUnfolderBase]: For 3827/4262 co-relation queries the response was YES. [2024-06-27 18:17:26,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 2598 events. 1290/2598 cut-off events. For 3827/4262 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20126 event pairs, 200 based on Foata normal form. 8/2462 useless extension candidates. Maximal degree in co-relation 6430. Up to 1571 conditions per place. [2024-06-27 18:17:26,084 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 26 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-27 18:17:26,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 74 transitions, 407 flow [2024-06-27 18:17:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:17:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:17:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-27 18:17:26,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7482993197278912 [2024-06-27 18:17:26,086 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 387 flow. Second operand 3 states and 110 transitions. [2024-06-27 18:17:26,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 74 transitions, 407 flow [2024-06-27 18:17:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 74 transitions, 377 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:26,089 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 309 flow [2024-06-27 18:17:26,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-06-27 18:17:26,091 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-27 18:17:26,091 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 309 flow [2024-06-27 18:17:26,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:26,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:26,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:26,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:17:26,092 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:26,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:26,092 INFO L85 PathProgramCache]: Analyzing trace with hash -311058941, now seen corresponding path program 1 times [2024-06-27 18:17:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:26,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067643865] [2024-06-27 18:17:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:26,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:26,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:26,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067643865] [2024-06-27 18:17:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067643865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:26,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:26,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802210562] [2024-06-27 18:17:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:26,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:26,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:26,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:26,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:26,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:27,433 INFO L124 PetriNetUnfolderBase]: 4876/7215 cut-off events. [2024-06-27 18:17:27,434 INFO L125 PetriNetUnfolderBase]: For 16244/16248 co-relation queries the response was YES. [2024-06-27 18:17:27,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22362 conditions, 7215 events. 4876/7215 cut-off events. For 16244/16248 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 41169 event pairs, 1489 based on Foata normal form. 8/7214 useless extension candidates. Maximal degree in co-relation 22340. Up to 6718 conditions per place. [2024-06-27 18:17:27,475 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 85 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-27 18:17:27,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 785 flow [2024-06-27 18:17:27,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:27,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-27 18:17:27,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 18:17:27,479 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 309 flow. Second operand 7 states and 196 transitions. [2024-06-27 18:17:27,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 785 flow [2024-06-27 18:17:27,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 127 transitions, 759 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:27,488 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 484 flow [2024-06-27 18:17:27,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-06-27 18:17:27,489 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-06-27 18:17:27,489 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 484 flow [2024-06-27 18:17:27,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:27,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:27,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:27,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:17:27,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:27,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1330216239, now seen corresponding path program 2 times [2024-06-27 18:17:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:27,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929506932] [2024-06-27 18:17:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:28,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929506932] [2024-06-27 18:17:28,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929506932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:28,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:28,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:28,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183540165] [2024-06-27 18:17:28,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:28,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:28,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:28,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:28,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:28,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:28,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:28,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:29,008 INFO L124 PetriNetUnfolderBase]: 4918/7276 cut-off events. [2024-06-27 18:17:29,008 INFO L125 PetriNetUnfolderBase]: For 17841/17847 co-relation queries the response was YES. [2024-06-27 18:17:29,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23545 conditions, 7276 events. 4918/7276 cut-off events. For 17841/17847 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 41513 event pairs, 1508 based on Foata normal form. 10/7274 useless extension candidates. Maximal degree in co-relation 23519. Up to 6744 conditions per place. [2024-06-27 18:17:29,050 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 77 selfloop transitions, 34 changer transitions 0/123 dead transitions. [2024-06-27 18:17:29,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 123 transitions, 888 flow [2024-06-27 18:17:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:29,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-27 18:17:29,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2024-06-27 18:17:29,051 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 484 flow. Second operand 6 states and 166 transitions. [2024-06-27 18:17:29,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 123 transitions, 888 flow [2024-06-27 18:17:29,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 123 transitions, 849 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:29,066 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 584 flow [2024-06-27 18:17:29,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=584, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2024-06-27 18:17:29,066 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-27 18:17:29,066 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 584 flow [2024-06-27 18:17:29,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:29,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:29,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:29,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:17:29,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:29,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1081718157, now seen corresponding path program 3 times [2024-06-27 18:17:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:29,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542701678] [2024-06-27 18:17:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:29,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:29,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:29,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542701678] [2024-06-27 18:17:29,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542701678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:29,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:29,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:29,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524325281] [2024-06-27 18:17:29,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:29,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:29,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:29,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:29,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:29,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 584 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:29,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:29,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:30,628 INFO L124 PetriNetUnfolderBase]: 4901/7244 cut-off events. [2024-06-27 18:17:30,628 INFO L125 PetriNetUnfolderBase]: For 20621/20623 co-relation queries the response was YES. [2024-06-27 18:17:30,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23876 conditions, 7244 events. 4901/7244 cut-off events. For 20621/20623 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 41224 event pairs, 1524 based on Foata normal form. 3/7228 useless extension candidates. Maximal degree in co-relation 23849. Up to 6723 conditions per place. [2024-06-27 18:17:30,702 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 73 selfloop transitions, 35 changer transitions 0/120 dead transitions. [2024-06-27 18:17:30,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 902 flow [2024-06-27 18:17:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-27 18:17:30,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:17:30,709 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 584 flow. Second operand 6 states and 162 transitions. [2024-06-27 18:17:30,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 902 flow [2024-06-27 18:17:30,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 849 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:30,729 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 611 flow [2024-06-27 18:17:30,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=611, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2024-06-27 18:17:30,731 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 26 predicate places. [2024-06-27 18:17:30,731 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 611 flow [2024-06-27 18:17:30,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:30,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:30,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:30,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:17:30,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:30,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -321775967, now seen corresponding path program 1 times [2024-06-27 18:17:30,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:30,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448187078] [2024-06-27 18:17:30,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:30,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:31,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448187078] [2024-06-27 18:17:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448187078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:31,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:31,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707176237] [2024-06-27 18:17:31,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:31,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:31,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:31,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 611 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:31,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:31,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:31,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:32,385 INFO L124 PetriNetUnfolderBase]: 4458/6795 cut-off events. [2024-06-27 18:17:32,386 INFO L125 PetriNetUnfolderBase]: For 18342/18344 co-relation queries the response was YES. [2024-06-27 18:17:32,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22114 conditions, 6795 events. 4458/6795 cut-off events. For 18342/18344 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 39933 event pairs, 1348 based on Foata normal form. 4/6778 useless extension candidates. Maximal degree in co-relation 22086. Up to 6299 conditions per place. [2024-06-27 18:17:32,426 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 100 selfloop transitions, 14 changer transitions 5/130 dead transitions. [2024-06-27 18:17:32,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 130 transitions, 979 flow [2024-06-27 18:17:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 18:17:32,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-27 18:17:32,429 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 611 flow. Second operand 7 states and 184 transitions. [2024-06-27 18:17:32,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 130 transitions, 979 flow [2024-06-27 18:17:32,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 130 transitions, 864 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:32,446 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 558 flow [2024-06-27 18:17:32,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=558, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-06-27 18:17:32,447 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-27 18:17:32,447 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 558 flow [2024-06-27 18:17:32,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:32,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:32,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:32,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:17:32,448 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:32,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1562497205, now seen corresponding path program 1 times [2024-06-27 18:17:32,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:32,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610112242] [2024-06-27 18:17:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:32,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:33,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:33,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610112242] [2024-06-27 18:17:33,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610112242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:33,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:33,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:33,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762659041] [2024-06-27 18:17:33,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:33,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:33,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:33,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:33,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:33,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 558 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:33,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:33,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:33,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:34,081 INFO L124 PetriNetUnfolderBase]: 4562/6671 cut-off events. [2024-06-27 18:17:34,081 INFO L125 PetriNetUnfolderBase]: For 22023/22029 co-relation queries the response was YES. [2024-06-27 18:17:34,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22998 conditions, 6671 events. 4562/6671 cut-off events. For 22023/22029 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 36879 event pairs, 1374 based on Foata normal form. 5/6666 useless extension candidates. Maximal degree in co-relation 22969. Up to 6104 conditions per place. [2024-06-27 18:17:34,122 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 89 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-06-27 18:17:34,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 138 transitions, 1026 flow [2024-06-27 18:17:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:34,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 18:17:34,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-27 18:17:34,124 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 558 flow. Second operand 7 states and 184 transitions. [2024-06-27 18:17:34,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 138 transitions, 1026 flow [2024-06-27 18:17:34,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 138 transitions, 986 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:34,140 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 665 flow [2024-06-27 18:17:34,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=665, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2024-06-27 18:17:34,141 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2024-06-27 18:17:34,141 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 665 flow [2024-06-27 18:17:34,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:34,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:34,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:17:34,142 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:34,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:34,142 INFO L85 PathProgramCache]: Analyzing trace with hash -864905175, now seen corresponding path program 2 times [2024-06-27 18:17:34,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:34,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425557341] [2024-06-27 18:17:34,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:34,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425557341] [2024-06-27 18:17:34,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425557341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:34,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:34,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226555867] [2024-06-27 18:17:34,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:34,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:34,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:34,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:34,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:34,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 665 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:34,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:34,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:34,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:35,774 INFO L124 PetriNetUnfolderBase]: 4585/6696 cut-off events. [2024-06-27 18:17:35,774 INFO L125 PetriNetUnfolderBase]: For 27637/27639 co-relation queries the response was YES. [2024-06-27 18:17:35,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24719 conditions, 6696 events. 4585/6696 cut-off events. For 27637/27639 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 36921 event pairs, 1388 based on Foata normal form. 2/6681 useless extension candidates. Maximal degree in co-relation 24689. Up to 6119 conditions per place. [2024-06-27 18:17:35,810 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 90 selfloop transitions, 45 changer transitions 0/145 dead transitions. [2024-06-27 18:17:35,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 1205 flow [2024-06-27 18:17:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 18:17:35,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364431486880467 [2024-06-27 18:17:35,812 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 665 flow. Second operand 7 states and 184 transitions. [2024-06-27 18:17:35,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 1205 flow [2024-06-27 18:17:35,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 145 transitions, 1160 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:35,834 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 781 flow [2024-06-27 18:17:35,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=781, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-06-27 18:17:35,835 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-27 18:17:35,835 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 781 flow [2024-06-27 18:17:35,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:35,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:35,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:35,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:17:35,836 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:35,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1385128535, now seen corresponding path program 3 times [2024-06-27 18:17:35,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:35,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916294762] [2024-06-27 18:17:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916294762] [2024-06-27 18:17:36,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916294762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:36,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:36,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290710102] [2024-06-27 18:17:36,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:36,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:36,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:36,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:36,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:36,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:36,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 781 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:36,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:36,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:36,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:37,416 INFO L124 PetriNetUnfolderBase]: 4580/6688 cut-off events. [2024-06-27 18:17:37,416 INFO L125 PetriNetUnfolderBase]: For 32062/32064 co-relation queries the response was YES. [2024-06-27 18:17:37,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25555 conditions, 6688 events. 4580/6688 cut-off events. For 32062/32064 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 36823 event pairs, 1388 based on Foata normal form. 2/6673 useless extension candidates. Maximal degree in co-relation 25523. Up to 6116 conditions per place. [2024-06-27 18:17:37,454 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 83 selfloop transitions, 48 changer transitions 0/141 dead transitions. [2024-06-27 18:17:37,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 141 transitions, 1201 flow [2024-06-27 18:17:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:17:37,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:17:37,456 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 781 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:17:37,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 141 transitions, 1201 flow [2024-06-27 18:17:37,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 141 transitions, 1139 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:37,485 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 823 flow [2024-06-27 18:17:37,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-06-27 18:17:37,486 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2024-06-27 18:17:37,486 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 823 flow [2024-06-27 18:17:37,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:37,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:37,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:17:37,487 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:37,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1597371665, now seen corresponding path program 1 times [2024-06-27 18:17:37,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:37,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685094573] [2024-06-27 18:17:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:37,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:38,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:38,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685094573] [2024-06-27 18:17:38,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685094573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:38,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:38,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:17:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922612591] [2024-06-27 18:17:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:38,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:17:38,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:38,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:17:38,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:17:38,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:17:38,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 823 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:38,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:38,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:17:38,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:38,796 INFO L124 PetriNetUnfolderBase]: 3783/6498 cut-off events. [2024-06-27 18:17:38,796 INFO L125 PetriNetUnfolderBase]: For 30671/30685 co-relation queries the response was YES. [2024-06-27 18:17:38,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22956 conditions, 6498 events. 3783/6498 cut-off events. For 30671/30685 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 43715 event pairs, 1514 based on Foata normal form. 5/6313 useless extension candidates. Maximal degree in co-relation 22921. Up to 5403 conditions per place. [2024-06-27 18:17:38,840 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 97 selfloop transitions, 9 changer transitions 0/123 dead transitions. [2024-06-27 18:17:38,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 123 transitions, 1130 flow [2024-06-27 18:17:38,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:17:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:17:38,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-27 18:17:38,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-06-27 18:17:38,842 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 823 flow. Second operand 5 states and 127 transitions. [2024-06-27 18:17:38,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 123 transitions, 1130 flow [2024-06-27 18:17:38,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 123 transitions, 996 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:38,867 INFO L231 Difference]: Finished difference. Result has 91 places, 109 transitions, 787 flow [2024-06-27 18:17:38,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=787, PETRI_PLACES=91, PETRI_TRANSITIONS=109} [2024-06-27 18:17:38,868 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-27 18:17:38,868 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 109 transitions, 787 flow [2024-06-27 18:17:38,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:38,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:38,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:38,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:17:38,868 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:38,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:38,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1562465675, now seen corresponding path program 1 times [2024-06-27 18:17:38,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:38,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522065364] [2024-06-27 18:17:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:38,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:39,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:39,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522065364] [2024-06-27 18:17:39,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522065364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:39,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:39,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554771433] [2024-06-27 18:17:39,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:39,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:39,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:39,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:39,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 109 transitions, 787 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:39,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:39,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:39,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:40,714 INFO L124 PetriNetUnfolderBase]: 4605/7370 cut-off events. [2024-06-27 18:17:40,714 INFO L125 PetriNetUnfolderBase]: For 38223/38231 co-relation queries the response was YES. [2024-06-27 18:17:40,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27242 conditions, 7370 events. 4605/7370 cut-off events. For 38223/38231 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 45826 event pairs, 1574 based on Foata normal form. 8/7163 useless extension candidates. Maximal degree in co-relation 27206. Up to 6143 conditions per place. [2024-06-27 18:17:40,761 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 97 selfloop transitions, 49 changer transitions 0/156 dead transitions. [2024-06-27 18:17:40,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 156 transitions, 1303 flow [2024-06-27 18:17:40,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 18:17:40,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451895043731778 [2024-06-27 18:17:40,763 INFO L175 Difference]: Start difference. First operand has 91 places, 109 transitions, 787 flow. Second operand 7 states and 187 transitions. [2024-06-27 18:17:40,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 156 transitions, 1303 flow [2024-06-27 18:17:40,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 156 transitions, 1278 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:40,791 INFO L231 Difference]: Finished difference. Result has 96 places, 112 transitions, 903 flow [2024-06-27 18:17:40,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=903, PETRI_PLACES=96, PETRI_TRANSITIONS=112} [2024-06-27 18:17:40,791 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-27 18:17:40,791 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 112 transitions, 903 flow [2024-06-27 18:17:40,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:40,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:40,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:40,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:17:40,792 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:40,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1192772352, now seen corresponding path program 1 times [2024-06-27 18:17:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610163041] [2024-06-27 18:17:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:41,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:41,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610163041] [2024-06-27 18:17:41,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610163041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:41,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:41,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760441890] [2024-06-27 18:17:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:41,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:41,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:41,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:41,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 112 transitions, 903 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:41,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:41,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:41,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:42,690 INFO L124 PetriNetUnfolderBase]: 4697/7497 cut-off events. [2024-06-27 18:17:42,690 INFO L125 PetriNetUnfolderBase]: For 43823/43827 co-relation queries the response was YES. [2024-06-27 18:17:42,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28444 conditions, 7497 events. 4697/7497 cut-off events. For 43823/43827 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 46534 event pairs, 1367 based on Foata normal form. 8/7287 useless extension candidates. Maximal degree in co-relation 28406. Up to 6011 conditions per place. [2024-06-27 18:17:42,744 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 109 selfloop transitions, 53 changer transitions 0/172 dead transitions. [2024-06-27 18:17:42,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 172 transitions, 1507 flow [2024-06-27 18:17:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 18:17:42,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459183673469388 [2024-06-27 18:17:42,746 INFO L175 Difference]: Start difference. First operand has 96 places, 112 transitions, 903 flow. Second operand 8 states and 214 transitions. [2024-06-27 18:17:42,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 172 transitions, 1507 flow [2024-06-27 18:17:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 172 transitions, 1360 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:42,782 INFO L231 Difference]: Finished difference. Result has 98 places, 119 transitions, 939 flow [2024-06-27 18:17:42,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=98, PETRI_TRANSITIONS=119} [2024-06-27 18:17:42,783 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-27 18:17:42,783 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 119 transitions, 939 flow [2024-06-27 18:17:42,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:42,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:42,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:42,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:17:42,784 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:42,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:42,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1701423077, now seen corresponding path program 2 times [2024-06-27 18:17:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:42,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40149994] [2024-06-27 18:17:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:43,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:43,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40149994] [2024-06-27 18:17:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40149994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:43,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:43,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:43,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136792737] [2024-06-27 18:17:43,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:43,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:43,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:43,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:43,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:43,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 119 transitions, 939 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:43,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:43,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:43,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:44,487 INFO L124 PetriNetUnfolderBase]: 4720/7557 cut-off events. [2024-06-27 18:17:44,487 INFO L125 PetriNetUnfolderBase]: For 49795/49799 co-relation queries the response was YES. [2024-06-27 18:17:44,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30061 conditions, 7557 events. 4720/7557 cut-off events. For 49795/49799 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 47185 event pairs, 1502 based on Foata normal form. 2/7338 useless extension candidates. Maximal degree in co-relation 30023. Up to 6295 conditions per place. [2024-06-27 18:17:44,537 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 101 selfloop transitions, 50 changer transitions 0/161 dead transitions. [2024-06-27 18:17:44,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 161 transitions, 1450 flow [2024-06-27 18:17:44,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 18:17:44,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2024-06-27 18:17:44,540 INFO L175 Difference]: Start difference. First operand has 98 places, 119 transitions, 939 flow. Second operand 7 states and 183 transitions. [2024-06-27 18:17:44,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 161 transitions, 1450 flow [2024-06-27 18:17:44,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 161 transitions, 1388 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:44,583 INFO L231 Difference]: Finished difference. Result has 101 places, 122 transitions, 1021 flow [2024-06-27 18:17:44,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1021, PETRI_PLACES=101, PETRI_TRANSITIONS=122} [2024-06-27 18:17:44,584 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-27 18:17:44,584 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 122 transitions, 1021 flow [2024-06-27 18:17:44,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:44,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:44,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:44,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:17:44,585 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:44,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:44,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2067942974, now seen corresponding path program 2 times [2024-06-27 18:17:44,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:44,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293698943] [2024-06-27 18:17:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:44,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:45,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:45,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293698943] [2024-06-27 18:17:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293698943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:45,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:45,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:45,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294849886] [2024-06-27 18:17:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:45,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:45,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 122 transitions, 1021 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:45,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:45,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:45,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:46,429 INFO L124 PetriNetUnfolderBase]: 4822/7210 cut-off events. [2024-06-27 18:17:46,429 INFO L125 PetriNetUnfolderBase]: For 55417/55419 co-relation queries the response was YES. [2024-06-27 18:17:46,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30719 conditions, 7210 events. 4822/7210 cut-off events. For 55417/55419 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 41593 event pairs, 1240 based on Foata normal form. 4/7148 useless extension candidates. Maximal degree in co-relation 30679. Up to 6072 conditions per place. [2024-06-27 18:17:46,479 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 107 selfloop transitions, 69 changer transitions 0/186 dead transitions. [2024-06-27 18:17:46,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 186 transitions, 1823 flow [2024-06-27 18:17:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-27 18:17:46,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-27 18:17:46,482 INFO L175 Difference]: Start difference. First operand has 101 places, 122 transitions, 1021 flow. Second operand 8 states and 217 transitions. [2024-06-27 18:17:46,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 186 transitions, 1823 flow [2024-06-27 18:17:46,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 186 transitions, 1742 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:46,527 INFO L231 Difference]: Finished difference. Result has 105 places, 131 transitions, 1190 flow [2024-06-27 18:17:46,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1190, PETRI_PLACES=105, PETRI_TRANSITIONS=131} [2024-06-27 18:17:46,528 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-27 18:17:46,528 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 131 transitions, 1190 flow [2024-06-27 18:17:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:46,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:46,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:46,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:17:46,529 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:46,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:46,530 INFO L85 PathProgramCache]: Analyzing trace with hash 417823421, now seen corresponding path program 3 times [2024-06-27 18:17:46,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:46,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085821166] [2024-06-27 18:17:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:46,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:47,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:47,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085821166] [2024-06-27 18:17:47,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085821166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:47,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:47,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:47,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060787252] [2024-06-27 18:17:47,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:47,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:47,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:47,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:47,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:47,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 131 transitions, 1190 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:47,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:47,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:47,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:48,216 INFO L124 PetriNetUnfolderBase]: 4817/7117 cut-off events. [2024-06-27 18:17:48,216 INFO L125 PetriNetUnfolderBase]: For 62370/62374 co-relation queries the response was YES. [2024-06-27 18:17:48,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31466 conditions, 7117 events. 4817/7117 cut-off events. For 62370/62374 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40264 event pairs, 1349 based on Foata normal form. 4/7094 useless extension candidates. Maximal degree in co-relation 31425. Up to 6432 conditions per place. [2024-06-27 18:17:48,259 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 109 selfloop transitions, 47 changer transitions 0/166 dead transitions. [2024-06-27 18:17:48,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 166 transitions, 1608 flow [2024-06-27 18:17:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 18:17:48,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160349854227405 [2024-06-27 18:17:48,262 INFO L175 Difference]: Start difference. First operand has 105 places, 131 transitions, 1190 flow. Second operand 7 states and 177 transitions. [2024-06-27 18:17:48,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 166 transitions, 1608 flow [2024-06-27 18:17:48,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 166 transitions, 1540 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:48,315 INFO L231 Difference]: Finished difference. Result has 110 places, 131 transitions, 1224 flow [2024-06-27 18:17:48,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1224, PETRI_PLACES=110, PETRI_TRANSITIONS=131} [2024-06-27 18:17:48,316 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2024-06-27 18:17:48,317 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 131 transitions, 1224 flow [2024-06-27 18:17:48,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:48,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:48,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:17:48,317 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:48,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1042255902, now seen corresponding path program 3 times [2024-06-27 18:17:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621290030] [2024-06-27 18:17:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:48,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:49,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:49,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621290030] [2024-06-27 18:17:49,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621290030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:49,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:49,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:49,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996047088] [2024-06-27 18:17:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:49,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:49,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:49,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 1224 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:49,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:49,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:49,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:50,202 INFO L124 PetriNetUnfolderBase]: 4807/7195 cut-off events. [2024-06-27 18:17:50,202 INFO L125 PetriNetUnfolderBase]: For 64749/64751 co-relation queries the response was YES. [2024-06-27 18:17:50,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31537 conditions, 7195 events. 4807/7195 cut-off events. For 64749/64751 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 41497 event pairs, 1242 based on Foata normal form. 4/7131 useless extension candidates. Maximal degree in co-relation 31493. Up to 6065 conditions per place. [2024-06-27 18:17:50,247 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 110 selfloop transitions, 66 changer transitions 0/186 dead transitions. [2024-06-27 18:17:50,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 186 transitions, 1886 flow [2024-06-27 18:17:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:50,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 18:17:50,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548469387755102 [2024-06-27 18:17:50,249 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 1224 flow. Second operand 8 states and 215 transitions. [2024-06-27 18:17:50,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 186 transitions, 1886 flow [2024-06-27 18:17:50,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 186 transitions, 1733 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:50,297 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 1211 flow [2024-06-27 18:17:50,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1211, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-06-27 18:17:50,297 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-27 18:17:50,297 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 1211 flow [2024-06-27 18:17:50,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:50,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:50,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:17:50,299 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:50,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash 10956032, now seen corresponding path program 4 times [2024-06-27 18:17:50,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:50,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95104193] [2024-06-27 18:17:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:50,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:51,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:51,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95104193] [2024-06-27 18:17:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95104193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:51,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:51,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:51,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272289909] [2024-06-27 18:17:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:51,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:51,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:51,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:51,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:51,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:51,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 1211 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:51,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:51,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:51,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:52,144 INFO L124 PetriNetUnfolderBase]: 4797/7179 cut-off events. [2024-06-27 18:17:52,144 INFO L125 PetriNetUnfolderBase]: For 67446/67448 co-relation queries the response was YES. [2024-06-27 18:17:52,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31758 conditions, 7179 events. 4797/7179 cut-off events. For 67446/67448 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 41414 event pairs, 1240 based on Foata normal form. 4/7117 useless extension candidates. Maximal degree in co-relation 31713. Up to 6061 conditions per place. [2024-06-27 18:17:52,193 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 100 selfloop transitions, 71 changer transitions 0/181 dead transitions. [2024-06-27 18:17:52,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 181 transitions, 1779 flow [2024-06-27 18:17:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-27 18:17:52,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-06-27 18:17:52,195 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 1211 flow. Second operand 8 states and 212 transitions. [2024-06-27 18:17:52,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 181 transitions, 1779 flow [2024-06-27 18:17:52,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 181 transitions, 1596 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:52,255 INFO L231 Difference]: Finished difference. Result has 112 places, 131 transitions, 1178 flow [2024-06-27 18:17:52,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1178, PETRI_PLACES=112, PETRI_TRANSITIONS=131} [2024-06-27 18:17:52,256 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2024-06-27 18:17:52,256 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 131 transitions, 1178 flow [2024-06-27 18:17:52,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:52,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:52,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:52,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:17:52,256 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:52,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:52,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1996956762, now seen corresponding path program 1 times [2024-06-27 18:17:52,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:52,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881285274] [2024-06-27 18:17:52,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:52,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:53,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:53,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881285274] [2024-06-27 18:17:53,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881285274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:53,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:53,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:17:53,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114818468] [2024-06-27 18:17:53,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:53,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:17:53,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:53,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:17:53,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:17:53,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:17:53,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 131 transitions, 1178 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 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) [2024-06-27 18:17:53,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:53,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:17:53,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:53,892 INFO L124 PetriNetUnfolderBase]: 3981/6540 cut-off events. [2024-06-27 18:17:53,893 INFO L125 PetriNetUnfolderBase]: For 61125/61137 co-relation queries the response was YES. [2024-06-27 18:17:53,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27897 conditions, 6540 events. 3981/6540 cut-off events. For 61125/61137 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 42214 event pairs, 1467 based on Foata normal form. 4/6430 useless extension candidates. Maximal degree in co-relation 27851. Up to 5641 conditions per place. [2024-06-27 18:17:53,939 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 123 selfloop transitions, 12 changer transitions 0/154 dead transitions. [2024-06-27 18:17:53,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 154 transitions, 1532 flow [2024-06-27 18:17:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:17:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:17:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-27 18:17:53,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136054421768708 [2024-06-27 18:17:53,940 INFO L175 Difference]: Start difference. First operand has 112 places, 131 transitions, 1178 flow. Second operand 6 states and 151 transitions. [2024-06-27 18:17:53,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 154 transitions, 1532 flow [2024-06-27 18:17:53,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 154 transitions, 1346 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:53,981 INFO L231 Difference]: Finished difference. Result has 110 places, 134 transitions, 1054 flow [2024-06-27 18:17:53,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1054, PETRI_PLACES=110, PETRI_TRANSITIONS=134} [2024-06-27 18:17:53,981 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2024-06-27 18:17:53,981 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 134 transitions, 1054 flow [2024-06-27 18:17:53,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 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) [2024-06-27 18:17:53,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:53,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:53,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:17:53,982 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:53,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:53,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1560430702, now seen corresponding path program 1 times [2024-06-27 18:17:53,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:53,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216929235] [2024-06-27 18:17:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:53,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216929235] [2024-06-27 18:17:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216929235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:54,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:54,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:54,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865873590] [2024-06-27 18:17:54,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:54,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:54,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:54,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:54,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:54,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 134 transitions, 1054 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:54,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:54,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:54,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:55,580 INFO L124 PetriNetUnfolderBase]: 4606/7483 cut-off events. [2024-06-27 18:17:55,580 INFO L125 PetriNetUnfolderBase]: For 75191/75199 co-relation queries the response was YES. [2024-06-27 18:17:55,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31537 conditions, 7483 events. 4606/7483 cut-off events. For 75191/75199 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 47508 event pairs, 977 based on Foata normal form. 6/7275 useless extension candidates. Maximal degree in co-relation 31491. Up to 6099 conditions per place. [2024-06-27 18:17:55,635 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 124 selfloop transitions, 37 changer transitions 0/179 dead transitions. [2024-06-27 18:17:55,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 179 transitions, 1624 flow [2024-06-27 18:17:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:55,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 18:17:55,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451895043731778 [2024-06-27 18:17:55,636 INFO L175 Difference]: Start difference. First operand has 110 places, 134 transitions, 1054 flow. Second operand 7 states and 187 transitions. [2024-06-27 18:17:55,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 179 transitions, 1624 flow [2024-06-27 18:17:55,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 179 transitions, 1584 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:17:55,696 INFO L231 Difference]: Finished difference. Result has 113 places, 138 transitions, 1147 flow [2024-06-27 18:17:55,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1147, PETRI_PLACES=113, PETRI_TRANSITIONS=138} [2024-06-27 18:17:55,697 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-27 18:17:55,697 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 138 transitions, 1147 flow [2024-06-27 18:17:55,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:55,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:55,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:55,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:17:55,698 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:55,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1560491152, now seen corresponding path program 2 times [2024-06-27 18:17:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:55,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103697330] [2024-06-27 18:17:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:56,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:56,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103697330] [2024-06-27 18:17:56,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103697330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:56,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:56,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:17:56,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906564847] [2024-06-27 18:17:56,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:56,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:17:56,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:17:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:17:56,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:17:56,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 138 transitions, 1147 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:56,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:56,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:17:56,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:57,446 INFO L124 PetriNetUnfolderBase]: 4598/7470 cut-off events. [2024-06-27 18:17:57,447 INFO L125 PetriNetUnfolderBase]: For 81014/81022 co-relation queries the response was YES. [2024-06-27 18:17:57,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32144 conditions, 7470 events. 4598/7470 cut-off events. For 81014/81022 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 47412 event pairs, 1311 based on Foata normal form. 6/7260 useless extension candidates. Maximal degree in co-relation 32097. Up to 6235 conditions per place. [2024-06-27 18:17:57,503 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 122 selfloop transitions, 38 changer transitions 0/178 dead transitions. [2024-06-27 18:17:57,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 178 transitions, 1593 flow [2024-06-27 18:17:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:17:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:17:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-27 18:17:57,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393586005830904 [2024-06-27 18:17:57,505 INFO L175 Difference]: Start difference. First operand has 113 places, 138 transitions, 1147 flow. Second operand 7 states and 185 transitions. [2024-06-27 18:17:57,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 178 transitions, 1593 flow [2024-06-27 18:17:57,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 178 transitions, 1523 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:57,570 INFO L231 Difference]: Finished difference. Result has 117 places, 138 transitions, 1162 flow [2024-06-27 18:17:57,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1162, PETRI_PLACES=117, PETRI_TRANSITIONS=138} [2024-06-27 18:17:57,571 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-27 18:17:57,571 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 138 transitions, 1162 flow [2024-06-27 18:17:57,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:57,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:57,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:57,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:17:57,572 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:57,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash 350758002, now seen corresponding path program 1 times [2024-06-27 18:17:57,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:57,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117671525] [2024-06-27 18:17:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:57,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:58,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:58,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117671525] [2024-06-27 18:17:58,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117671525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:58,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:58,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932204464] [2024-06-27 18:17:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:58,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:58,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:58,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:17:58,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 138 transitions, 1162 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:58,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:58,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:17:58,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:59,763 INFO L124 PetriNetUnfolderBase]: 4934/7907 cut-off events. [2024-06-27 18:17:59,763 INFO L125 PetriNetUnfolderBase]: For 89414/89418 co-relation queries the response was YES. [2024-06-27 18:17:59,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34408 conditions, 7907 events. 4934/7907 cut-off events. For 89414/89418 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49577 event pairs, 1296 based on Foata normal form. 4/7687 useless extension candidates. Maximal degree in co-relation 34359. Up to 6199 conditions per place. [2024-06-27 18:17:59,814 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 119 selfloop transitions, 68 changer transitions 0/197 dead transitions. [2024-06-27 18:17:59,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 197 transitions, 1940 flow [2024-06-27 18:17:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 18:17:59,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:17:59,817 INFO L175 Difference]: Start difference. First operand has 117 places, 138 transitions, 1162 flow. Second operand 8 states and 216 transitions. [2024-06-27 18:17:59,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 197 transitions, 1940 flow [2024-06-27 18:17:59,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 197 transitions, 1855 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:59,880 INFO L231 Difference]: Finished difference. Result has 119 places, 144 transitions, 1298 flow [2024-06-27 18:17:59,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1298, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2024-06-27 18:17:59,881 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-27 18:17:59,881 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 1298 flow [2024-06-27 18:17:59,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:59,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:59,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:59,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:17:59,882 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:17:59,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1525941030, now seen corresponding path program 2 times [2024-06-27 18:17:59,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:59,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990961860] [2024-06-27 18:17:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:59,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:00,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:00,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990961860] [2024-06-27 18:18:00,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990961860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:00,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:00,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:00,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145039254] [2024-06-27 18:18:00,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:00,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:00,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:00,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:00,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 144 transitions, 1298 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:00,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:00,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:00,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:02,011 INFO L124 PetriNetUnfolderBase]: 4980/8014 cut-off events. [2024-06-27 18:18:02,011 INFO L125 PetriNetUnfolderBase]: For 96893/96901 co-relation queries the response was YES. [2024-06-27 18:18:02,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35420 conditions, 8014 events. 4980/8014 cut-off events. For 96893/96901 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 50660 event pairs, 1285 based on Foata normal form. 10/7791 useless extension candidates. Maximal degree in co-relation 35370. Up to 6238 conditions per place. [2024-06-27 18:18:02,071 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 119 selfloop transitions, 74 changer transitions 0/203 dead transitions. [2024-06-27 18:18:02,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 203 transitions, 1992 flow [2024-06-27 18:18:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-27 18:18:02,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561224489795918 [2024-06-27 18:18:02,072 INFO L175 Difference]: Start difference. First operand has 119 places, 144 transitions, 1298 flow. Second operand 8 states and 218 transitions. [2024-06-27 18:18:02,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 203 transitions, 1992 flow [2024-06-27 18:18:02,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 203 transitions, 1872 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:02,158 INFO L231 Difference]: Finished difference. Result has 123 places, 147 transitions, 1378 flow [2024-06-27 18:18:02,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1378, PETRI_PLACES=123, PETRI_TRANSITIONS=147} [2024-06-27 18:18:02,159 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-27 18:18:02,159 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 147 transitions, 1378 flow [2024-06-27 18:18:02,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:02,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:02,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:02,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:18:02,160 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:02,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:02,160 INFO L85 PathProgramCache]: Analyzing trace with hash 350751492, now seen corresponding path program 3 times [2024-06-27 18:18:02,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:02,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978936253] [2024-06-27 18:18:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:02,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:02,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:02,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978936253] [2024-06-27 18:18:02,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978936253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:02,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:02,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:02,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830429499] [2024-06-27 18:18:02,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:02,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:02,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:02,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:02,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:02,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:02,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 147 transitions, 1378 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:02,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:02,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:02,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:04,273 INFO L124 PetriNetUnfolderBase]: 4970/7966 cut-off events. [2024-06-27 18:18:04,273 INFO L125 PetriNetUnfolderBase]: For 102729/102733 co-relation queries the response was YES. [2024-06-27 18:18:04,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35422 conditions, 7966 events. 4970/7966 cut-off events. For 102729/102733 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 50105 event pairs, 1294 based on Foata normal form. 4/7746 useless extension candidates. Maximal degree in co-relation 35371. Up to 6230 conditions per place. [2024-06-27 18:18:04,334 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 119 selfloop transitions, 70 changer transitions 0/199 dead transitions. [2024-06-27 18:18:04,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 199 transitions, 2002 flow [2024-06-27 18:18:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-27 18:18:04,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:18:04,342 INFO L175 Difference]: Start difference. First operand has 123 places, 147 transitions, 1378 flow. Second operand 8 states and 216 transitions. [2024-06-27 18:18:04,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 199 transitions, 2002 flow [2024-06-27 18:18:04,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 199 transitions, 1776 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:04,430 INFO L231 Difference]: Finished difference. Result has 124 places, 147 transitions, 1300 flow [2024-06-27 18:18:04,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1300, PETRI_PLACES=124, PETRI_TRANSITIONS=147} [2024-06-27 18:18:04,435 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2024-06-27 18:18:04,435 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 147 transitions, 1300 flow [2024-06-27 18:18:04,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:04,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:04,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:04,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:18:04,436 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:04,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:04,436 INFO L85 PathProgramCache]: Analyzing trace with hash -945255004, now seen corresponding path program 1 times [2024-06-27 18:18:04,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:04,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339897379] [2024-06-27 18:18:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:04,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:05,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:05,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339897379] [2024-06-27 18:18:05,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339897379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:05,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:05,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:05,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008429892] [2024-06-27 18:18:05,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:05,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:05,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:05,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:05,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:05,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 147 transitions, 1300 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:05,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:05,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:05,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:06,042 INFO L124 PetriNetUnfolderBase]: 4739/7549 cut-off events. [2024-06-27 18:18:06,042 INFO L125 PetriNetUnfolderBase]: For 105833/105849 co-relation queries the response was YES. [2024-06-27 18:18:06,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34344 conditions, 7549 events. 4739/7549 cut-off events. For 105833/105849 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 48019 event pairs, 1616 based on Foata normal form. 9/7418 useless extension candidates. Maximal degree in co-relation 34293. Up to 6704 conditions per place. [2024-06-27 18:18:06,097 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 148 selfloop transitions, 15 changer transitions 0/181 dead transitions. [2024-06-27 18:18:06,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 181 transitions, 1795 flow [2024-06-27 18:18:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-27 18:18:06,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-27 18:18:06,099 INFO L175 Difference]: Start difference. First operand has 124 places, 147 transitions, 1300 flow. Second operand 6 states and 150 transitions. [2024-06-27 18:18:06,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 181 transitions, 1795 flow [2024-06-27 18:18:06,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 181 transitions, 1638 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:06,188 INFO L231 Difference]: Finished difference. Result has 124 places, 156 transitions, 1290 flow [2024-06-27 18:18:06,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1290, PETRI_PLACES=124, PETRI_TRANSITIONS=156} [2024-06-27 18:18:06,189 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 69 predicate places. [2024-06-27 18:18:06,189 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 156 transitions, 1290 flow [2024-06-27 18:18:06,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:06,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:06,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:06,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:18:06,190 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:06,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 331356802, now seen corresponding path program 4 times [2024-06-27 18:18:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:06,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312205526] [2024-06-27 18:18:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:06,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312205526] [2024-06-27 18:18:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312205526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:06,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:06,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:06,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123280930] [2024-06-27 18:18:06,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:06,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:06,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:06,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:06,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:06,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 156 transitions, 1290 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:06,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:06,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:06,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:08,157 INFO L124 PetriNetUnfolderBase]: 5033/7481 cut-off events. [2024-06-27 18:18:08,157 INFO L125 PetriNetUnfolderBase]: For 112590/112594 co-relation queries the response was YES. [2024-06-27 18:18:08,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35943 conditions, 7481 events. 5033/7481 cut-off events. For 112590/112594 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 42982 event pairs, 1123 based on Foata normal form. 6/7456 useless extension candidates. Maximal degree in co-relation 35890. Up to 6292 conditions per place. [2024-06-27 18:18:08,206 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 126 selfloop transitions, 72 changer transitions 0/208 dead transitions. [2024-06-27 18:18:08,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 208 transitions, 1978 flow [2024-06-27 18:18:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 18:18:08,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 18:18:08,215 INFO L175 Difference]: Start difference. First operand has 124 places, 156 transitions, 1290 flow. Second operand 8 states and 210 transitions. [2024-06-27 18:18:08,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 208 transitions, 1978 flow [2024-06-27 18:18:08,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 208 transitions, 1936 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:08,299 INFO L231 Difference]: Finished difference. Result has 129 places, 159 transitions, 1438 flow [2024-06-27 18:18:08,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1438, PETRI_PLACES=129, PETRI_TRANSITIONS=159} [2024-06-27 18:18:08,300 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2024-06-27 18:18:08,300 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 159 transitions, 1438 flow [2024-06-27 18:18:08,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:08,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:08,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:08,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:18:08,301 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:08,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2017260210, now seen corresponding path program 5 times [2024-06-27 18:18:08,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:08,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411222013] [2024-06-27 18:18:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:09,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411222013] [2024-06-27 18:18:09,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411222013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:09,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:09,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:09,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535911881] [2024-06-27 18:18:09,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:09,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:09,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:09,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:09,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 159 transitions, 1438 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:09,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:09,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:09,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:10,226 INFO L124 PetriNetUnfolderBase]: 5079/7563 cut-off events. [2024-06-27 18:18:10,227 INFO L125 PetriNetUnfolderBase]: For 121606/121610 co-relation queries the response was YES. [2024-06-27 18:18:10,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37263 conditions, 7563 events. 5079/7563 cut-off events. For 121606/121610 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 43679 event pairs, 1123 based on Foata normal form. 6/7538 useless extension candidates. Maximal degree in co-relation 37209. Up to 6331 conditions per place. [2024-06-27 18:18:10,286 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 127 selfloop transitions, 74 changer transitions 0/211 dead transitions. [2024-06-27 18:18:10,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 211 transitions, 2142 flow [2024-06-27 18:18:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 18:18:10,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382653061224489 [2024-06-27 18:18:10,288 INFO L175 Difference]: Start difference. First operand has 129 places, 159 transitions, 1438 flow. Second operand 8 states and 211 transitions. [2024-06-27 18:18:10,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 211 transitions, 2142 flow [2024-06-27 18:18:10,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 211 transitions, 1897 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:10,380 INFO L231 Difference]: Finished difference. Result has 130 places, 162 transitions, 1393 flow [2024-06-27 18:18:10,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1393, PETRI_PLACES=130, PETRI_TRANSITIONS=162} [2024-06-27 18:18:10,381 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 75 predicate places. [2024-06-27 18:18:10,381 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 162 transitions, 1393 flow [2024-06-27 18:18:10,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:10,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:10,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:10,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:18:10,382 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:10,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:10,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2017029570, now seen corresponding path program 6 times [2024-06-27 18:18:10,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:10,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095647994] [2024-06-27 18:18:10,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:10,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095647994] [2024-06-27 18:18:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095647994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:11,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:11,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899195434] [2024-06-27 18:18:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:11,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:11,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:11,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:11,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 162 transitions, 1393 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:11,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:11,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:11,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:12,471 INFO L124 PetriNetUnfolderBase]: 5069/7549 cut-off events. [2024-06-27 18:18:12,472 INFO L125 PetriNetUnfolderBase]: For 123952/123956 co-relation queries the response was YES. [2024-06-27 18:18:12,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36996 conditions, 7549 events. 5069/7549 cut-off events. For 123952/123956 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 43520 event pairs, 1132 based on Foata normal form. 6/7524 useless extension candidates. Maximal degree in co-relation 36941. Up to 6323 conditions per place. [2024-06-27 18:18:12,523 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 120 selfloop transitions, 78 changer transitions 0/208 dead transitions. [2024-06-27 18:18:12,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 208 transitions, 1935 flow [2024-06-27 18:18:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:18:12,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-27 18:18:12,525 INFO L175 Difference]: Start difference. First operand has 130 places, 162 transitions, 1393 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:18:12,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 208 transitions, 1935 flow [2024-06-27 18:18:12,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 208 transitions, 1775 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:12,618 INFO L231 Difference]: Finished difference. Result has 133 places, 162 transitions, 1397 flow [2024-06-27 18:18:12,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1397, PETRI_PLACES=133, PETRI_TRANSITIONS=162} [2024-06-27 18:18:12,619 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2024-06-27 18:18:12,619 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 162 transitions, 1397 flow [2024-06-27 18:18:12,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:12,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:12,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:18:12,619 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:12,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1770813106, now seen corresponding path program 2 times [2024-06-27 18:18:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531705947] [2024-06-27 18:18:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:13,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:13,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531705947] [2024-06-27 18:18:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531705947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:13,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376766736] [2024-06-27 18:18:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:13,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:13,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:13,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 162 transitions, 1397 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:13,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:13,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:13,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:14,123 INFO L124 PetriNetUnfolderBase]: 4818/7711 cut-off events. [2024-06-27 18:18:14,123 INFO L125 PetriNetUnfolderBase]: For 129785/129821 co-relation queries the response was YES. [2024-06-27 18:18:14,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36524 conditions, 7711 events. 4818/7711 cut-off events. For 129785/129821 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 49346 event pairs, 1640 based on Foata normal form. 23/7588 useless extension candidates. Maximal degree in co-relation 36468. Up to 6794 conditions per place. [2024-06-27 18:18:14,189 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 149 selfloop transitions, 20 changer transitions 0/187 dead transitions. [2024-06-27 18:18:14,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 187 transitions, 1847 flow [2024-06-27 18:18:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:14,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:14,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 18:18:14,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:18:14,191 INFO L175 Difference]: Start difference. First operand has 133 places, 162 transitions, 1397 flow. Second operand 6 states and 147 transitions. [2024-06-27 18:18:14,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 187 transitions, 1847 flow [2024-06-27 18:18:14,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 187 transitions, 1667 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:14,300 INFO L231 Difference]: Finished difference. Result has 131 places, 165 transitions, 1303 flow [2024-06-27 18:18:14,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1303, PETRI_PLACES=131, PETRI_TRANSITIONS=165} [2024-06-27 18:18:14,301 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-27 18:18:14,301 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 165 transitions, 1303 flow [2024-06-27 18:18:14,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:14,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:14,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:14,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:18:14,301 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:14,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1768459812, now seen corresponding path program 1 times [2024-06-27 18:18:14,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:14,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307862564] [2024-06-27 18:18:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:14,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:14,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307862564] [2024-06-27 18:18:14,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307862564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:14,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:14,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:14,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465346757] [2024-06-27 18:18:14,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:14,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:14,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:14,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:18:14,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 165 transitions, 1303 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 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) [2024-06-27 18:18:14,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:14,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:18:14,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:15,797 INFO L124 PetriNetUnfolderBase]: 4249/7013 cut-off events. [2024-06-27 18:18:15,798 INFO L125 PetriNetUnfolderBase]: For 116754/116766 co-relation queries the response was YES. [2024-06-27 18:18:15,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32985 conditions, 7013 events. 4249/7013 cut-off events. For 116754/116766 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45939 event pairs, 1414 based on Foata normal form. 3/6890 useless extension candidates. Maximal degree in co-relation 32928. Up to 6025 conditions per place. [2024-06-27 18:18:15,857 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 160 selfloop transitions, 13 changer transitions 0/192 dead transitions. [2024-06-27 18:18:15,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 192 transitions, 1775 flow [2024-06-27 18:18:15,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 18:18:15,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-27 18:18:15,859 INFO L175 Difference]: Start difference. First operand has 131 places, 165 transitions, 1303 flow. Second operand 6 states and 152 transitions. [2024-06-27 18:18:15,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 192 transitions, 1775 flow [2024-06-27 18:18:15,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 192 transitions, 1711 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:15,954 INFO L231 Difference]: Finished difference. Result has 134 places, 172 transitions, 1354 flow [2024-06-27 18:18:15,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1354, PETRI_PLACES=134, PETRI_TRANSITIONS=172} [2024-06-27 18:18:15,955 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2024-06-27 18:18:15,955 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 172 transitions, 1354 flow [2024-06-27 18:18:15,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 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) [2024-06-27 18:18:15,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:15,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:15,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:18:15,956 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:15,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash -731303836, now seen corresponding path program 2 times [2024-06-27 18:18:15,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:15,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631399108] [2024-06-27 18:18:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:15,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631399108] [2024-06-27 18:18:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631399108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:16,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:16,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:18:16,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420981831] [2024-06-27 18:18:16,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:16,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:18:16,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:18:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:18:16,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:18:16,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 172 transitions, 1354 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 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) [2024-06-27 18:18:16,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:16,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:18:16,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:17,550 INFO L124 PetriNetUnfolderBase]: 4251/7037 cut-off events. [2024-06-27 18:18:17,550 INFO L125 PetriNetUnfolderBase]: For 124165/124181 co-relation queries the response was YES. [2024-06-27 18:18:17,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33997 conditions, 7037 events. 4251/7037 cut-off events. For 124165/124181 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 46309 event pairs, 1410 based on Foata normal form. 7/6911 useless extension candidates. Maximal degree in co-relation 33938. Up to 6008 conditions per place. [2024-06-27 18:18:17,607 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 157 selfloop transitions, 18 changer transitions 0/194 dead transitions. [2024-06-27 18:18:17,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 194 transitions, 1804 flow [2024-06-27 18:18:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:18:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:18:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 18:18:17,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-27 18:18:17,609 INFO L175 Difference]: Start difference. First operand has 134 places, 172 transitions, 1354 flow. Second operand 6 states and 152 transitions. [2024-06-27 18:18:17,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 194 transitions, 1804 flow [2024-06-27 18:18:17,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 194 transitions, 1759 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:17,734 INFO L231 Difference]: Finished difference. Result has 137 places, 175 transitions, 1393 flow [2024-06-27 18:18:17,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1393, PETRI_PLACES=137, PETRI_TRANSITIONS=175} [2024-06-27 18:18:17,735 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 82 predicate places. [2024-06-27 18:18:17,735 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 175 transitions, 1393 flow [2024-06-27 18:18:17,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 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) [2024-06-27 18:18:17,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:17,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:17,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:18:17,736 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:17,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2008678170, now seen corresponding path program 1 times [2024-06-27 18:18:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682806479] [2024-06-27 18:18:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:18,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682806479] [2024-06-27 18:18:18,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682806479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:18,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:18,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:18:18,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232481753] [2024-06-27 18:18:18,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:18,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:18:18,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:18,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:18:18,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:18:18,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:18,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 175 transitions, 1393 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:18,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:18,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:18,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:20,047 INFO L124 PetriNetUnfolderBase]: 4464/7272 cut-off events. [2024-06-27 18:18:20,048 INFO L125 PetriNetUnfolderBase]: For 131826/131828 co-relation queries the response was YES. [2024-06-27 18:18:20,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35584 conditions, 7272 events. 4464/7272 cut-off events. For 131826/131828 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46844 event pairs, 1392 based on Foata normal form. 4/7146 useless extension candidates. Maximal degree in co-relation 35524. Up to 6280 conditions per place. [2024-06-27 18:18:20,106 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 194 selfloop transitions, 25 changer transitions 0/230 dead transitions. [2024-06-27 18:18:20,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 230 transitions, 2047 flow [2024-06-27 18:18:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:18:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:18:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 18:18:20,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170068027210885 [2024-06-27 18:18:20,107 INFO L175 Difference]: Start difference. First operand has 137 places, 175 transitions, 1393 flow. Second operand 9 states and 228 transitions. [2024-06-27 18:18:20,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 230 transitions, 2047 flow [2024-06-27 18:18:20,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 230 transitions, 1985 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:20,218 INFO L231 Difference]: Finished difference. Result has 143 places, 180 transitions, 1450 flow [2024-06-27 18:18:20,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1450, PETRI_PLACES=143, PETRI_TRANSITIONS=180} [2024-06-27 18:18:20,219 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 88 predicate places. [2024-06-27 18:18:20,219 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 180 transitions, 1450 flow [2024-06-27 18:18:20,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:20,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:20,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:20,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:18:20,219 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:20,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1128712222, now seen corresponding path program 1 times [2024-06-27 18:18:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:20,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460585063] [2024-06-27 18:18:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:21,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:21,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460585063] [2024-06-27 18:18:21,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460585063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:21,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:21,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455049217] [2024-06-27 18:18:21,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:21,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:21,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:21,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:21,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 180 transitions, 1450 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:21,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:21,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:21,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:22,271 INFO L124 PetriNetUnfolderBase]: 5119/8076 cut-off events. [2024-06-27 18:18:22,271 INFO L125 PetriNetUnfolderBase]: For 166008/166014 co-relation queries the response was YES. [2024-06-27 18:18:22,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41066 conditions, 8076 events. 5119/8076 cut-off events. For 166008/166014 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 50680 event pairs, 1182 based on Foata normal form. 5/7932 useless extension candidates. Maximal degree in co-relation 41004. Up to 6519 conditions per place. [2024-06-27 18:18:22,329 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 170 selfloop transitions, 54 changer transitions 0/234 dead transitions. [2024-06-27 18:18:22,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 234 transitions, 2244 flow [2024-06-27 18:18:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:18:22,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:18:22,331 INFO L175 Difference]: Start difference. First operand has 143 places, 180 transitions, 1450 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:18:22,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 234 transitions, 2244 flow [2024-06-27 18:18:22,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 234 transitions, 2165 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:22,439 INFO L231 Difference]: Finished difference. Result has 145 places, 184 transitions, 1546 flow [2024-06-27 18:18:22,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1546, PETRI_PLACES=145, PETRI_TRANSITIONS=184} [2024-06-27 18:18:22,440 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2024-06-27 18:18:22,440 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 184 transitions, 1546 flow [2024-06-27 18:18:22,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:22,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:22,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:18:22,441 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:22,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2139465956, now seen corresponding path program 2 times [2024-06-27 18:18:22,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:22,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231312090] [2024-06-27 18:18:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:23,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:23,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231312090] [2024-06-27 18:18:23,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231312090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:23,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:23,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308504451] [2024-06-27 18:18:23,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:23,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:23,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:23,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:23,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:23,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 184 transitions, 1546 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:23,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:23,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:23,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:24,662 INFO L124 PetriNetUnfolderBase]: 5156/8096 cut-off events. [2024-06-27 18:18:24,663 INFO L125 PetriNetUnfolderBase]: For 175659/175665 co-relation queries the response was YES. [2024-06-27 18:18:24,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42008 conditions, 8096 events. 5156/8096 cut-off events. For 175659/175665 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 50613 event pairs, 1554 based on Foata normal form. 5/7960 useless extension candidates. Maximal degree in co-relation 41945. Up to 6878 conditions per place. [2024-06-27 18:18:24,736 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 165 selfloop transitions, 59 changer transitions 0/234 dead transitions. [2024-06-27 18:18:24,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 234 transitions, 2196 flow [2024-06-27 18:18:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:24,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 18:18:24,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-27 18:18:24,738 INFO L175 Difference]: Start difference. First operand has 145 places, 184 transitions, 1546 flow. Second operand 8 states and 206 transitions. [2024-06-27 18:18:24,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 234 transitions, 2196 flow [2024-06-27 18:18:24,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 234 transitions, 2102 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:24,874 INFO L231 Difference]: Finished difference. Result has 149 places, 186 transitions, 1613 flow [2024-06-27 18:18:24,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1613, PETRI_PLACES=149, PETRI_TRANSITIONS=186} [2024-06-27 18:18:24,874 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-27 18:18:24,875 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 186 transitions, 1613 flow [2024-06-27 18:18:24,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:24,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:24,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:24,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:18:24,875 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:24,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1130586172, now seen corresponding path program 3 times [2024-06-27 18:18:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:24,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268693523] [2024-06-27 18:18:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268693523] [2024-06-27 18:18:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268693523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037686435] [2024-06-27 18:18:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:25,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:25,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:25,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 186 transitions, 1613 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:25,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:25,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:25,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:27,044 INFO L124 PetriNetUnfolderBase]: 5193/8147 cut-off events. [2024-06-27 18:18:27,045 INFO L125 PetriNetUnfolderBase]: For 183832/183838 co-relation queries the response was YES. [2024-06-27 18:18:27,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42765 conditions, 8147 events. 5193/8147 cut-off events. For 183832/183838 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 50909 event pairs, 1554 based on Foata normal form. 5/8012 useless extension candidates. Maximal degree in co-relation 42700. Up to 6840 conditions per place. [2024-06-27 18:18:27,122 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 167 selfloop transitions, 60 changer transitions 0/237 dead transitions. [2024-06-27 18:18:27,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 237 transitions, 2267 flow [2024-06-27 18:18:27,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 18:18:27,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280612244897959 [2024-06-27 18:18:27,124 INFO L175 Difference]: Start difference. First operand has 149 places, 186 transitions, 1613 flow. Second operand 8 states and 207 transitions. [2024-06-27 18:18:27,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 237 transitions, 2267 flow [2024-06-27 18:18:27,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 237 transitions, 2136 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:27,269 INFO L231 Difference]: Finished difference. Result has 151 places, 188 transitions, 1641 flow [2024-06-27 18:18:27,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1641, PETRI_PLACES=151, PETRI_TRANSITIONS=188} [2024-06-27 18:18:27,269 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-27 18:18:27,270 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 188 transitions, 1641 flow [2024-06-27 18:18:27,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:27,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:27,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:27,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:18:27,270 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:27,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1189994618, now seen corresponding path program 1 times [2024-06-27 18:18:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:27,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245207876] [2024-06-27 18:18:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:27,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:27,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:27,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245207876] [2024-06-27 18:18:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245207876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487169904] [2024-06-27 18:18:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:27,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:27,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:28,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:28,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 188 transitions, 1641 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:28,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:28,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:28,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:29,066 INFO L124 PetriNetUnfolderBase]: 4961/7959 cut-off events. [2024-06-27 18:18:29,067 INFO L125 PetriNetUnfolderBase]: For 191114/191132 co-relation queries the response was YES. [2024-06-27 18:18:29,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41909 conditions, 7959 events. 4961/7959 cut-off events. For 191114/191132 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 51284 event pairs, 1564 based on Foata normal form. 20/7830 useless extension candidates. Maximal degree in co-relation 41843. Up to 6805 conditions per place. [2024-06-27 18:18:29,138 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 186 selfloop transitions, 43 changer transitions 0/251 dead transitions. [2024-06-27 18:18:29,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 251 transitions, 2570 flow [2024-06-27 18:18:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-27 18:18:29,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-06-27 18:18:29,140 INFO L175 Difference]: Start difference. First operand has 151 places, 188 transitions, 1641 flow. Second operand 7 states and 182 transitions. [2024-06-27 18:18:29,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 251 transitions, 2570 flow [2024-06-27 18:18:29,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 251 transitions, 2401 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:29,270 INFO L231 Difference]: Finished difference. Result has 154 places, 218 transitions, 2023 flow [2024-06-27 18:18:29,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2023, PETRI_PLACES=154, PETRI_TRANSITIONS=218} [2024-06-27 18:18:29,271 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-06-27 18:18:29,271 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 218 transitions, 2023 flow [2024-06-27 18:18:29,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:29,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:29,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:29,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:18:29,272 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:29,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash 496336956, now seen corresponding path program 4 times [2024-06-27 18:18:29,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:29,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506018872] [2024-06-27 18:18:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:29,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:30,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:30,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506018872] [2024-06-27 18:18:30,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506018872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:30,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391170623] [2024-06-27 18:18:30,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:30,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:30,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:30,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:30,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:30,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 218 transitions, 2023 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:30,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:30,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:30,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:31,342 INFO L124 PetriNetUnfolderBase]: 5264/8303 cut-off events. [2024-06-27 18:18:31,343 INFO L125 PetriNetUnfolderBase]: For 206754/206772 co-relation queries the response was YES. [2024-06-27 18:18:31,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45392 conditions, 8303 events. 5264/8303 cut-off events. For 206754/206772 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 52390 event pairs, 1187 based on Foata normal form. 19/8172 useless extension candidates. Maximal degree in co-relation 45323. Up to 6868 conditions per place. [2024-06-27 18:18:31,415 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 185 selfloop transitions, 79 changer transitions 0/274 dead transitions. [2024-06-27 18:18:31,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 274 transitions, 2929 flow [2024-06-27 18:18:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 18:18:31,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5433673469387755 [2024-06-27 18:18:31,417 INFO L175 Difference]: Start difference. First operand has 154 places, 218 transitions, 2023 flow. Second operand 8 states and 213 transitions. [2024-06-27 18:18:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 274 transitions, 2929 flow [2024-06-27 18:18:31,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 274 transitions, 2835 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:31,579 INFO L231 Difference]: Finished difference. Result has 159 places, 220 transitions, 2126 flow [2024-06-27 18:18:31,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2126, PETRI_PLACES=159, PETRI_TRANSITIONS=220} [2024-06-27 18:18:31,579 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 104 predicate places. [2024-06-27 18:18:31,579 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 220 transitions, 2126 flow [2024-06-27 18:18:31,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:31,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:31,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:31,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:18:31,580 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:31,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:31,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1709021942, now seen corresponding path program 5 times [2024-06-27 18:18:31,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:31,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605085367] [2024-06-27 18:18:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:31,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:32,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:32,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605085367] [2024-06-27 18:18:32,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605085367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:32,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:32,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:32,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949683479] [2024-06-27 18:18:32,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:32,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:32,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:32,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:32,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:32,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 220 transitions, 2126 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:32,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:32,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:32,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:33,912 INFO L124 PetriNetUnfolderBase]: 5301/8366 cut-off events. [2024-06-27 18:18:33,912 INFO L125 PetriNetUnfolderBase]: For 217664/217682 co-relation queries the response was YES. [2024-06-27 18:18:33,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46170 conditions, 8366 events. 5301/8366 cut-off events. For 217664/217682 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 52952 event pairs, 1564 based on Foata normal form. 19/8233 useless extension candidates. Maximal degree in co-relation 46100. Up to 7089 conditions per place. [2024-06-27 18:18:33,985 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 185 selfloop transitions, 78 changer transitions 0/273 dead transitions. [2024-06-27 18:18:33,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 273 transitions, 2890 flow [2024-06-27 18:18:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 18:18:33,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5331632653061225 [2024-06-27 18:18:33,987 INFO L175 Difference]: Start difference. First operand has 159 places, 220 transitions, 2126 flow. Second operand 8 states and 209 transitions. [2024-06-27 18:18:33,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 273 transitions, 2890 flow [2024-06-27 18:18:34,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 273 transitions, 2694 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:34,130 INFO L231 Difference]: Finished difference. Result has 161 places, 222 transitions, 2133 flow [2024-06-27 18:18:34,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2133, PETRI_PLACES=161, PETRI_TRANSITIONS=222} [2024-06-27 18:18:34,131 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2024-06-27 18:18:34,131 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 222 transitions, 2133 flow [2024-06-27 18:18:34,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:34,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:34,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:34,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:18:34,132 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:34,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 501847206, now seen corresponding path program 6 times [2024-06-27 18:18:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:34,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246927698] [2024-06-27 18:18:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:34,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246927698] [2024-06-27 18:18:34,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246927698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:34,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:34,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:34,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671544893] [2024-06-27 18:18:34,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:34,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:34,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:34,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:35,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:35,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 222 transitions, 2133 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:35,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:35,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:35,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:36,309 INFO L124 PetriNetUnfolderBase]: 5338/8423 cut-off events. [2024-06-27 18:18:36,309 INFO L125 PetriNetUnfolderBase]: For 227036/227042 co-relation queries the response was YES. [2024-06-27 18:18:36,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46535 conditions, 8423 events. 5338/8423 cut-off events. For 227036/227042 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 53322 event pairs, 1580 based on Foata normal form. 5/8273 useless extension candidates. Maximal degree in co-relation 46464. Up to 7144 conditions per place. [2024-06-27 18:18:36,394 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 185 selfloop transitions, 75 changer transitions 0/270 dead transitions. [2024-06-27 18:18:36,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 270 transitions, 2867 flow [2024-06-27 18:18:36,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:18:36,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 18:18:36,396 INFO L175 Difference]: Start difference. First operand has 161 places, 222 transitions, 2133 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:18:36,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 270 transitions, 2867 flow [2024-06-27 18:18:36,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 270 transitions, 2690 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:36,633 INFO L231 Difference]: Finished difference. Result has 163 places, 224 transitions, 2153 flow [2024-06-27 18:18:36,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2153, PETRI_PLACES=163, PETRI_TRANSITIONS=224} [2024-06-27 18:18:36,634 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 108 predicate places. [2024-06-27 18:18:36,634 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 224 transitions, 2153 flow [2024-06-27 18:18:36,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:36,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:36,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:36,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:18:36,635 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:36,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:36,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1189635173, now seen corresponding path program 1 times [2024-06-27 18:18:36,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:36,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292264016] [2024-06-27 18:18:36,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:36,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:37,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:37,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292264016] [2024-06-27 18:18:37,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292264016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:37,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:37,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398181297] [2024-06-27 18:18:37,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:37,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:37,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:37,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:37,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:37,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:37,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 224 transitions, 2153 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:37,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:37,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:37,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:38,708 INFO L124 PetriNetUnfolderBase]: 5056/8131 cut-off events. [2024-06-27 18:18:38,708 INFO L125 PetriNetUnfolderBase]: For 232639/232657 co-relation queries the response was YES. [2024-06-27 18:18:38,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45164 conditions, 8131 events. 5056/8131 cut-off events. For 232639/232657 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 52726 event pairs, 1565 based on Foata normal form. 19/7995 useless extension candidates. Maximal degree in co-relation 45092. Up to 7108 conditions per place. [2024-06-27 18:18:38,793 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 214 selfloop transitions, 18 changer transitions 0/257 dead transitions. [2024-06-27 18:18:38,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 257 transitions, 2767 flow [2024-06-27 18:18:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:18:38,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-06-27 18:18:38,794 INFO L175 Difference]: Start difference. First operand has 163 places, 224 transitions, 2153 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:18:38,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 257 transitions, 2767 flow [2024-06-27 18:18:39,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 257 transitions, 2592 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:39,009 INFO L231 Difference]: Finished difference. Result has 164 places, 227 transitions, 2062 flow [2024-06-27 18:18:39,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2062, PETRI_PLACES=164, PETRI_TRANSITIONS=227} [2024-06-27 18:18:39,009 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2024-06-27 18:18:39,010 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 227 transitions, 2062 flow [2024-06-27 18:18:39,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:39,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:39,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:39,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:18:39,010 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:39,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:39,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1189635638, now seen corresponding path program 2 times [2024-06-27 18:18:39,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:39,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709671350] [2024-06-27 18:18:39,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:39,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:39,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:39,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709671350] [2024-06-27 18:18:39,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709671350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:39,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:39,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:39,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948788702] [2024-06-27 18:18:39,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:39,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:39,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:39,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:39,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:39,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 227 transitions, 2062 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:39,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:39,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:39,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:41,050 INFO L124 PetriNetUnfolderBase]: 5132/8254 cut-off events. [2024-06-27 18:18:41,051 INFO L125 PetriNetUnfolderBase]: For 245262/245272 co-relation queries the response was YES. [2024-06-27 18:18:41,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46463 conditions, 8254 events. 5132/8254 cut-off events. For 245262/245272 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53768 event pairs, 1585 based on Foata normal form. 10/8107 useless extension candidates. Maximal degree in co-relation 46390. Up to 6944 conditions per place. [2024-06-27 18:18:41,143 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 192 selfloop transitions, 46 changer transitions 0/263 dead transitions. [2024-06-27 18:18:41,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 263 transitions, 2834 flow [2024-06-27 18:18:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:18:41,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521865889212828 [2024-06-27 18:18:41,144 INFO L175 Difference]: Start difference. First operand has 164 places, 227 transitions, 2062 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:18:41,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 263 transitions, 2834 flow [2024-06-27 18:18:41,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 263 transitions, 2772 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:41,370 INFO L231 Difference]: Finished difference. Result has 167 places, 235 transitions, 2243 flow [2024-06-27 18:18:41,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2243, PETRI_PLACES=167, PETRI_TRANSITIONS=235} [2024-06-27 18:18:41,371 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2024-06-27 18:18:41,371 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 235 transitions, 2243 flow [2024-06-27 18:18:41,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:41,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:41,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:41,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:18:41,371 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:41,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1889235946, now seen corresponding path program 7 times [2024-06-27 18:18:41,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:41,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541928993] [2024-06-27 18:18:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:41,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:42,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:42,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541928993] [2024-06-27 18:18:42,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541928993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:42,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:42,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:18:42,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590828320] [2024-06-27 18:18:42,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:42,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:18:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:18:42,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:18:42,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:18:42,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 235 transitions, 2243 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:42,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:42,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:18:42,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:43,652 INFO L124 PetriNetUnfolderBase]: 5423/8551 cut-off events. [2024-06-27 18:18:43,652 INFO L125 PetriNetUnfolderBase]: For 262255/262261 co-relation queries the response was YES. [2024-06-27 18:18:43,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49545 conditions, 8551 events. 5423/8551 cut-off events. For 262255/262261 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 54078 event pairs, 1606 based on Foata normal form. 8/8399 useless extension candidates. Maximal degree in co-relation 49470. Up to 7258 conditions per place. [2024-06-27 18:18:43,737 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 196 selfloop transitions, 72 changer transitions 0/278 dead transitions. [2024-06-27 18:18:43,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 278 transitions, 2939 flow [2024-06-27 18:18:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:18:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:18:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 18:18:43,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127551020408163 [2024-06-27 18:18:43,756 INFO L175 Difference]: Start difference. First operand has 167 places, 235 transitions, 2243 flow. Second operand 8 states and 201 transitions. [2024-06-27 18:18:43,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 278 transitions, 2939 flow [2024-06-27 18:18:44,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 278 transitions, 2819 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:44,011 INFO L231 Difference]: Finished difference. Result has 172 places, 235 transitions, 2274 flow [2024-06-27 18:18:44,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2123, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2274, PETRI_PLACES=172, PETRI_TRANSITIONS=235} [2024-06-27 18:18:44,015 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-27 18:18:44,015 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 235 transitions, 2274 flow [2024-06-27 18:18:44,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:44,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:44,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:18:44,016 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:44,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash 939370097, now seen corresponding path program 2 times [2024-06-27 18:18:44,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:44,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996571414] [2024-06-27 18:18:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:44,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:44,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996571414] [2024-06-27 18:18:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996571414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:44,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336742634] [2024-06-27 18:18:44,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:44,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:44,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:44,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:44,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:45,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:45,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 235 transitions, 2274 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:45,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:45,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:45,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:46,297 INFO L124 PetriNetUnfolderBase]: 5141/8445 cut-off events. [2024-06-27 18:18:46,297 INFO L125 PetriNetUnfolderBase]: For 268160/268200 co-relation queries the response was YES. [2024-06-27 18:18:46,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48615 conditions, 8445 events. 5141/8445 cut-off events. For 268160/268200 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 56426 event pairs, 1559 based on Foata normal form. 33/8272 useless extension candidates. Maximal degree in co-relation 48538. Up to 7206 conditions per place. [2024-06-27 18:18:46,380 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 217 selfloop transitions, 23 changer transitions 0/265 dead transitions. [2024-06-27 18:18:46,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 265 transitions, 2912 flow [2024-06-27 18:18:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:46,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:18:46,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271137026239065 [2024-06-27 18:18:46,382 INFO L175 Difference]: Start difference. First operand has 172 places, 235 transitions, 2274 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:18:46,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 265 transitions, 2912 flow [2024-06-27 18:18:46,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 265 transitions, 2743 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:46,587 INFO L231 Difference]: Finished difference. Result has 172 places, 238 transitions, 2209 flow [2024-06-27 18:18:46,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2209, PETRI_PLACES=172, PETRI_TRANSITIONS=238} [2024-06-27 18:18:46,588 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-27 18:18:46,588 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 238 transitions, 2209 flow [2024-06-27 18:18:46,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:46,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:46,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:46,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:18:46,591 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:46,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:46,591 INFO L85 PathProgramCache]: Analyzing trace with hash -775406198, now seen corresponding path program 3 times [2024-06-27 18:18:46,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:46,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030094753] [2024-06-27 18:18:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:46,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:47,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:47,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030094753] [2024-06-27 18:18:47,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030094753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:47,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:47,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:47,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213896002] [2024-06-27 18:18:47,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:47,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:47,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:47,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 238 transitions, 2209 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:47,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:47,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:47,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:48,755 INFO L124 PetriNetUnfolderBase]: 5172/8448 cut-off events. [2024-06-27 18:18:48,755 INFO L125 PetriNetUnfolderBase]: For 279513/279523 co-relation queries the response was YES. [2024-06-27 18:18:48,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49417 conditions, 8448 events. 5172/8448 cut-off events. For 279513/279523 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56034 event pairs, 1584 based on Foata normal form. 10/8257 useless extension candidates. Maximal degree in co-relation 49339. Up to 6903 conditions per place. [2024-06-27 18:18:48,829 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 188 selfloop transitions, 59 changer transitions 0/272 dead transitions. [2024-06-27 18:18:48,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 272 transitions, 3115 flow [2024-06-27 18:18:48,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 18:18:48,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2024-06-27 18:18:48,831 INFO L175 Difference]: Start difference. First operand has 172 places, 238 transitions, 2209 flow. Second operand 7 states and 178 transitions. [2024-06-27 18:18:48,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 272 transitions, 3115 flow [2024-06-27 18:18:49,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 272 transitions, 3033 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:49,044 INFO L231 Difference]: Finished difference. Result has 175 places, 246 transitions, 2407 flow [2024-06-27 18:18:49,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2407, PETRI_PLACES=175, PETRI_TRANSITIONS=246} [2024-06-27 18:18:49,045 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 120 predicate places. [2024-06-27 18:18:49,045 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 246 transitions, 2407 flow [2024-06-27 18:18:49,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:49,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:49,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:49,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:18:49,045 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:49,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 939875087, now seen corresponding path program 3 times [2024-06-27 18:18:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:49,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833469220] [2024-06-27 18:18:49,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:49,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:49,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:49,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833469220] [2024-06-27 18:18:49,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833469220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:49,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:49,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:49,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943701049] [2024-06-27 18:18:49,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:49,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:49,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:49,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:49,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:50,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:50,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 246 transitions, 2407 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:50,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:50,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:50,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:51,205 INFO L124 PetriNetUnfolderBase]: 5174/8514 cut-off events. [2024-06-27 18:18:51,205 INFO L125 PetriNetUnfolderBase]: For 297315/297355 co-relation queries the response was YES. [2024-06-27 18:18:51,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51186 conditions, 8514 events. 5174/8514 cut-off events. For 297315/297355 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 56924 event pairs, 1563 based on Foata normal form. 33/8336 useless extension candidates. Maximal degree in co-relation 51106. Up to 7219 conditions per place. [2024-06-27 18:18:51,301 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 223 selfloop transitions, 31 changer transitions 0/279 dead transitions. [2024-06-27 18:18:51,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 279 transitions, 3097 flow [2024-06-27 18:18:51,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:51,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:18:51,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956268221574344 [2024-06-27 18:18:51,303 INFO L175 Difference]: Start difference. First operand has 175 places, 246 transitions, 2407 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:18:51,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 279 transitions, 3097 flow [2024-06-27 18:18:51,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 279 transitions, 2917 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:51,687 INFO L231 Difference]: Finished difference. Result has 179 places, 252 transitions, 2387 flow [2024-06-27 18:18:51,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2227, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2387, PETRI_PLACES=179, PETRI_TRANSITIONS=252} [2024-06-27 18:18:51,687 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 124 predicate places. [2024-06-27 18:18:51,688 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 252 transitions, 2387 flow [2024-06-27 18:18:51,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:51,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:51,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:51,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:18:51,688 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:51,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1950329190, now seen corresponding path program 1 times [2024-06-27 18:18:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:51,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261045142] [2024-06-27 18:18:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:51,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:52,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261045142] [2024-06-27 18:18:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261045142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:52,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182895293] [2024-06-27 18:18:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:52,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:52,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:52,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:52,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:52,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 252 transitions, 2387 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:52,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:52,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:52,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:53,841 INFO L124 PetriNetUnfolderBase]: 5101/8229 cut-off events. [2024-06-27 18:18:53,842 INFO L125 PetriNetUnfolderBase]: For 306916/306946 co-relation queries the response was YES. [2024-06-27 18:18:53,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50563 conditions, 8229 events. 5101/8229 cut-off events. For 306916/306946 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 53429 event pairs, 1445 based on Foata normal form. 1/8068 useless extension candidates. Maximal degree in co-relation 50481. Up to 7183 conditions per place. [2024-06-27 18:18:53,935 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 253 selfloop transitions, 17 changer transitions 0/285 dead transitions. [2024-06-27 18:18:53,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 285 transitions, 3092 flow [2024-06-27 18:18:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:18:53,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-27 18:18:53,937 INFO L175 Difference]: Start difference. First operand has 179 places, 252 transitions, 2387 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:18:53,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 285 transitions, 3092 flow [2024-06-27 18:18:54,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 285 transitions, 3019 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:54,277 INFO L231 Difference]: Finished difference. Result has 184 places, 259 transitions, 2452 flow [2024-06-27 18:18:54,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2452, PETRI_PLACES=184, PETRI_TRANSITIONS=259} [2024-06-27 18:18:54,278 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 129 predicate places. [2024-06-27 18:18:54,278 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 259 transitions, 2452 flow [2024-06-27 18:18:54,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:54,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:54,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:18:54,279 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:54,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:54,279 INFO L85 PathProgramCache]: Analyzing trace with hash 930357839, now seen corresponding path program 1 times [2024-06-27 18:18:54,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:54,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985765002] [2024-06-27 18:18:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:54,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:55,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985765002] [2024-06-27 18:18:55,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985765002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:55,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:55,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521132490] [2024-06-27 18:18:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:55,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:55,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:18:55,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 259 transitions, 2452 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:55,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:55,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:18:55,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:56,501 INFO L124 PetriNetUnfolderBase]: 4871/7979 cut-off events. [2024-06-27 18:18:56,502 INFO L125 PetriNetUnfolderBase]: For 321829/321859 co-relation queries the response was YES. [2024-06-27 18:18:56,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50389 conditions, 7979 events. 4871/7979 cut-off events. For 321829/321859 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 52897 event pairs, 1411 based on Foata normal form. 3/7824 useless extension candidates. Maximal degree in co-relation 50304. Up to 6733 conditions per place. [2024-06-27 18:18:56,598 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 240 selfloop transitions, 16 changer transitions 0/288 dead transitions. [2024-06-27 18:18:56,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 288 transitions, 3102 flow [2024-06-27 18:18:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:18:56,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:18:56,599 INFO L175 Difference]: Start difference. First operand has 184 places, 259 transitions, 2452 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:18:56,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 288 transitions, 3102 flow [2024-06-27 18:18:57,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 288 transitions, 3029 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:57,021 INFO L231 Difference]: Finished difference. Result has 187 places, 262 transitions, 2465 flow [2024-06-27 18:18:57,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2465, PETRI_PLACES=187, PETRI_TRANSITIONS=262} [2024-06-27 18:18:57,022 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 132 predicate places. [2024-06-27 18:18:57,022 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 262 transitions, 2465 flow [2024-06-27 18:18:57,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:57,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:57,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:57,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:18:57,023 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:57,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1012319420, now seen corresponding path program 2 times [2024-06-27 18:18:57,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:57,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211861519] [2024-06-27 18:18:57,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:57,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211861519] [2024-06-27 18:18:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211861519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:57,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:57,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:18:57,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258275534] [2024-06-27 18:18:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:57,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:18:57,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:57,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:18:57,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:18:57,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:18:57,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 262 transitions, 2465 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:57,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:57,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:18:57,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:59,254 INFO L124 PetriNetUnfolderBase]: 5132/8277 cut-off events. [2024-06-27 18:18:59,255 INFO L125 PetriNetUnfolderBase]: For 332391/332421 co-relation queries the response was YES. [2024-06-27 18:18:59,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52797 conditions, 8277 events. 5132/8277 cut-off events. For 332391/332421 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 53748 event pairs, 1438 based on Foata normal form. 1/8115 useless extension candidates. Maximal degree in co-relation 52711. Up to 7204 conditions per place. [2024-06-27 18:18:59,332 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 253 selfloop transitions, 22 changer transitions 0/290 dead transitions. [2024-06-27 18:18:59,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 290 transitions, 3161 flow [2024-06-27 18:18:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:18:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:18:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:18:59,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-27 18:18:59,334 INFO L175 Difference]: Start difference. First operand has 187 places, 262 transitions, 2465 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:18:59,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 290 transitions, 3161 flow [2024-06-27 18:18:59,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 290 transitions, 3097 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:59,686 INFO L231 Difference]: Finished difference. Result has 189 places, 265 transitions, 2509 flow [2024-06-27 18:18:59,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2509, PETRI_PLACES=189, PETRI_TRANSITIONS=265} [2024-06-27 18:18:59,695 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 134 predicate places. [2024-06-27 18:18:59,695 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 265 transitions, 2509 flow [2024-06-27 18:18:59,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:59,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:59,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:59,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:18:59,696 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:18:59,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash 939554330, now seen corresponding path program 3 times [2024-06-27 18:18:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:59,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040998380] [2024-06-27 18:18:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:59,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:00,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:00,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040998380] [2024-06-27 18:19:00,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040998380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:00,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:00,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941462052] [2024-06-27 18:19:00,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:00,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:00,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:00,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:00,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:19:00,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 265 transitions, 2509 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:00,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:00,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:19:00,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:01,836 INFO L124 PetriNetUnfolderBase]: 5144/8472 cut-off events. [2024-06-27 18:19:01,836 INFO L125 PetriNetUnfolderBase]: For 345120/345156 co-relation queries the response was YES. [2024-06-27 18:19:01,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53685 conditions, 8472 events. 5144/8472 cut-off events. For 345120/345156 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 56524 event pairs, 1436 based on Foata normal form. 3/8264 useless extension candidates. Maximal degree in co-relation 53598. Up to 7188 conditions per place. [2024-06-27 18:19:01,952 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 248 selfloop transitions, 29 changer transitions 0/292 dead transitions. [2024-06-27 18:19:01,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 292 transitions, 3221 flow [2024-06-27 18:19:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:01,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 18:19:01,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49854227405247814 [2024-06-27 18:19:01,954 INFO L175 Difference]: Start difference. First operand has 189 places, 265 transitions, 2509 flow. Second operand 7 states and 171 transitions. [2024-06-27 18:19:01,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 292 transitions, 3221 flow [2024-06-27 18:19:02,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 292 transitions, 3135 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:02,347 INFO L231 Difference]: Finished difference. Result has 191 places, 268 transitions, 2551 flow [2024-06-27 18:19:02,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2551, PETRI_PLACES=191, PETRI_TRANSITIONS=268} [2024-06-27 18:19:02,348 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 136 predicate places. [2024-06-27 18:19:02,348 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 268 transitions, 2551 flow [2024-06-27 18:19:02,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:02,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:02,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:02,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:19:02,354 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:02,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash 939554609, now seen corresponding path program 2 times [2024-06-27 18:19:02,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:02,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071225372] [2024-06-27 18:19:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:02,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:03,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071225372] [2024-06-27 18:19:03,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071225372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:03,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:03,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:03,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035980611] [2024-06-27 18:19:03,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:03,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:03,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:19:03,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 268 transitions, 2551 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:03,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:03,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:19:03,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:04,691 INFO L124 PetriNetUnfolderBase]: 4932/8278 cut-off events. [2024-06-27 18:19:04,691 INFO L125 PetriNetUnfolderBase]: For 360795/360831 co-relation queries the response was YES. [2024-06-27 18:19:04,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53200 conditions, 8278 events. 4932/8278 cut-off events. For 360795/360831 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 56459 event pairs, 1408 based on Foata normal form. 9/8071 useless extension candidates. Maximal degree in co-relation 53112. Up to 6790 conditions per place. [2024-06-27 18:19:04,796 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 241 selfloop transitions, 21 changer transitions 0/296 dead transitions. [2024-06-27 18:19:04,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 296 transitions, 3229 flow [2024-06-27 18:19:04,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:19:04,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:19:04,798 INFO L175 Difference]: Start difference. First operand has 191 places, 268 transitions, 2551 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:19:04,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 296 transitions, 3229 flow [2024-06-27 18:19:05,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 296 transitions, 3123 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:05,170 INFO L231 Difference]: Finished difference. Result has 193 places, 271 transitions, 2551 flow [2024-06-27 18:19:05,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2551, PETRI_PLACES=193, PETRI_TRANSITIONS=271} [2024-06-27 18:19:05,171 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 138 predicate places. [2024-06-27 18:19:05,171 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 271 transitions, 2551 flow [2024-06-27 18:19:05,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:05,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:05,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:05,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:19:05,172 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:05,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash 939881039, now seen corresponding path program 3 times [2024-06-27 18:19:05,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:05,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339261012] [2024-06-27 18:19:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339261012] [2024-06-27 18:19:06,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339261012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:06,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:06,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418721604] [2024-06-27 18:19:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:06,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:06,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-06-27 18:19:06,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 271 transitions, 2551 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:06,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:06,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-06-27 18:19:06,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:07,549 INFO L124 PetriNetUnfolderBase]: 4925/8314 cut-off events. [2024-06-27 18:19:07,549 INFO L125 PetriNetUnfolderBase]: For 369591/369627 co-relation queries the response was YES. [2024-06-27 18:19:07,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53797 conditions, 8314 events. 4925/8314 cut-off events. For 369591/369627 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57219 event pairs, 1405 based on Foata normal form. 9/8099 useless extension candidates. Maximal degree in co-relation 53708. Up to 6715 conditions per place. [2024-06-27 18:19:07,655 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 235 selfloop transitions, 31 changer transitions 0/300 dead transitions. [2024-06-27 18:19:07,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 300 transitions, 3245 flow [2024-06-27 18:19:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 18:19:07,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189504373177842 [2024-06-27 18:19:07,656 INFO L175 Difference]: Start difference. First operand has 193 places, 271 transitions, 2551 flow. Second operand 7 states and 178 transitions. [2024-06-27 18:19:07,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 300 transitions, 3245 flow [2024-06-27 18:19:08,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 300 transitions, 3161 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:08,085 INFO L231 Difference]: Finished difference. Result has 195 places, 274 transitions, 2600 flow [2024-06-27 18:19:08,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2600, PETRI_PLACES=195, PETRI_TRANSITIONS=274} [2024-06-27 18:19:08,086 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 140 predicate places. [2024-06-27 18:19:08,086 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 274 transitions, 2600 flow [2024-06-27 18:19:08,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:08,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:08,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:08,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:19:08,086 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:08,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash 630341261, now seen corresponding path program 1 times [2024-06-27 18:19:08,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:08,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847475502] [2024-06-27 18:19:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:08,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:08,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:08,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847475502] [2024-06-27 18:19:08,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847475502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:08,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:08,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:08,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185884815] [2024-06-27 18:19:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:08,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:08,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:08,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:08,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:08,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:08,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 274 transitions, 2600 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:08,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:08,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:08,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:10,801 INFO L124 PetriNetUnfolderBase]: 5905/9498 cut-off events. [2024-06-27 18:19:10,801 INFO L125 PetriNetUnfolderBase]: For 427807/427815 co-relation queries the response was YES. [2024-06-27 18:19:10,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62097 conditions, 9498 events. 5905/9498 cut-off events. For 427807/427815 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 62305 event pairs, 1086 based on Foata normal form. 18/9311 useless extension candidates. Maximal degree in co-relation 62007. Up to 6285 conditions per place. [2024-06-27 18:19:10,907 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 235 selfloop transitions, 99 changer transitions 0/344 dead transitions. [2024-06-27 18:19:10,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 344 transitions, 3788 flow [2024-06-27 18:19:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:10,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:19:10,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:19:10,912 INFO L175 Difference]: Start difference. First operand has 195 places, 274 transitions, 2600 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:19:10,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 344 transitions, 3788 flow [2024-06-27 18:19:11,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 344 transitions, 3679 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:11,323 INFO L231 Difference]: Finished difference. Result has 199 places, 276 transitions, 2745 flow [2024-06-27 18:19:11,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2745, PETRI_PLACES=199, PETRI_TRANSITIONS=276} [2024-06-27 18:19:11,324 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 144 predicate places. [2024-06-27 18:19:11,324 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 276 transitions, 2745 flow [2024-06-27 18:19:11,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:11,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:11,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:11,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:19:11,325 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:11,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash -914498855, now seen corresponding path program 2 times [2024-06-27 18:19:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:11,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026773402] [2024-06-27 18:19:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:11,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:12,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:12,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026773402] [2024-06-27 18:19:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026773402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:12,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:12,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:12,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240926773] [2024-06-27 18:19:12,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:12,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:12,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:12,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:12,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 276 transitions, 2745 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:12,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:12,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:12,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:14,134 INFO L124 PetriNetUnfolderBase]: 6109/9811 cut-off events. [2024-06-27 18:19:14,135 INFO L125 PetriNetUnfolderBase]: For 450665/450673 co-relation queries the response was YES. [2024-06-27 18:19:14,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64718 conditions, 9811 events. 6109/9811 cut-off events. For 450665/450673 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 64929 event pairs, 1615 based on Foata normal form. 26/9630 useless extension candidates. Maximal degree in co-relation 64627. Up to 7597 conditions per place. [2024-06-27 18:19:14,267 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 223 selfloop transitions, 107 changer transitions 0/340 dead transitions. [2024-06-27 18:19:14,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 340 transitions, 3714 flow [2024-06-27 18:19:14,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-27 18:19:14,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-06-27 18:19:14,269 INFO L175 Difference]: Start difference. First operand has 199 places, 276 transitions, 2745 flow. Second operand 9 states and 240 transitions. [2024-06-27 18:19:14,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 340 transitions, 3714 flow [2024-06-27 18:19:14,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 340 transitions, 3597 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:14,758 INFO L231 Difference]: Finished difference. Result has 203 places, 278 transitions, 2904 flow [2024-06-27 18:19:14,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2628, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2904, PETRI_PLACES=203, PETRI_TRANSITIONS=278} [2024-06-27 18:19:14,759 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 148 predicate places. [2024-06-27 18:19:14,759 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 278 transitions, 2904 flow [2024-06-27 18:19:14,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:14,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:14,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:14,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:19:14,760 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:14,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:14,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1477167045, now seen corresponding path program 3 times [2024-06-27 18:19:14,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:14,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525947265] [2024-06-27 18:19:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:14,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:15,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:15,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525947265] [2024-06-27 18:19:15,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525947265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:15,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:15,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:15,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450204297] [2024-06-27 18:19:15,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:15,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:15,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:15,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:15,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:15,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:15,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 278 transitions, 2904 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:15,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:15,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:15,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:17,534 INFO L124 PetriNetUnfolderBase]: 6239/10025 cut-off events. [2024-06-27 18:19:17,535 INFO L125 PetriNetUnfolderBase]: For 463107/463115 co-relation queries the response was YES. [2024-06-27 18:19:17,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67032 conditions, 10025 events. 6239/10025 cut-off events. For 463107/463115 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 66622 event pairs, 1619 based on Foata normal form. 18/9838 useless extension candidates. Maximal degree in co-relation 66939. Up to 7593 conditions per place. [2024-06-27 18:19:17,667 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 226 selfloop transitions, 109 changer transitions 0/345 dead transitions. [2024-06-27 18:19:17,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 345 transitions, 3875 flow [2024-06-27 18:19:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:17,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:19:17,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:19:17,669 INFO L175 Difference]: Start difference. First operand has 203 places, 278 transitions, 2904 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:19:17,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 345 transitions, 3875 flow [2024-06-27 18:19:18,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 345 transitions, 3629 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:18,230 INFO L231 Difference]: Finished difference. Result has 205 places, 279 transitions, 2912 flow [2024-06-27 18:19:18,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2912, PETRI_PLACES=205, PETRI_TRANSITIONS=279} [2024-06-27 18:19:18,230 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 150 predicate places. [2024-06-27 18:19:18,231 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 279 transitions, 2912 flow [2024-06-27 18:19:18,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:18,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:18,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:18,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:19:18,231 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:18,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:18,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1481751015, now seen corresponding path program 4 times [2024-06-27 18:19:18,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:18,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090284120] [2024-06-27 18:19:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:18,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:19,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:19,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090284120] [2024-06-27 18:19:19,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090284120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:19,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:19,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380487520] [2024-06-27 18:19:19,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:19,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:19,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:19,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:19,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:19,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:19,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 279 transitions, 2912 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:19,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:19,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:19,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:21,001 INFO L124 PetriNetUnfolderBase]: 6369/10228 cut-off events. [2024-06-27 18:19:21,001 INFO L125 PetriNetUnfolderBase]: For 478068/478076 co-relation queries the response was YES. [2024-06-27 18:19:21,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68010 conditions, 10228 events. 6369/10228 cut-off events. For 478068/478076 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 68142 event pairs, 1633 based on Foata normal form. 18/10043 useless extension candidates. Maximal degree in co-relation 67916. Up to 7530 conditions per place. [2024-06-27 18:19:21,156 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 231 selfloop transitions, 107 changer transitions 0/348 dead transitions. [2024-06-27 18:19:21,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 348 transitions, 3907 flow [2024-06-27 18:19:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-27 18:19:21,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532879818594104 [2024-06-27 18:19:21,158 INFO L175 Difference]: Start difference. First operand has 205 places, 279 transitions, 2912 flow. Second operand 9 states and 244 transitions. [2024-06-27 18:19:21,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 348 transitions, 3907 flow [2024-06-27 18:19:21,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 348 transitions, 3671 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:21,758 INFO L231 Difference]: Finished difference. Result has 207 places, 280 transitions, 2928 flow [2024-06-27 18:19:21,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2928, PETRI_PLACES=207, PETRI_TRANSITIONS=280} [2024-06-27 18:19:21,758 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 152 predicate places. [2024-06-27 18:19:21,758 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 280 transitions, 2928 flow [2024-06-27 18:19:21,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:21,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:21,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:21,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:19:21,759 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:21,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1764874041, now seen corresponding path program 1 times [2024-06-27 18:19:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:21,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102394327] [2024-06-27 18:19:21,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:21,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:22,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:22,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102394327] [2024-06-27 18:19:22,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102394327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:22,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444985423] [2024-06-27 18:19:22,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:22,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:22,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:22,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:19:22,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 280 transitions, 2928 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:22,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:22,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:19:22,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:24,356 INFO L124 PetriNetUnfolderBase]: 6069/9919 cut-off events. [2024-06-27 18:19:24,357 INFO L125 PetriNetUnfolderBase]: For 471924/471952 co-relation queries the response was YES. [2024-06-27 18:19:24,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66253 conditions, 9919 events. 6069/9919 cut-off events. For 471924/471952 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 67813 event pairs, 1839 based on Foata normal form. 30/9726 useless extension candidates. Maximal degree in co-relation 66158. Up to 8401 conditions per place. [2024-06-27 18:19:24,479 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 246 selfloop transitions, 47 changer transitions 0/322 dead transitions. [2024-06-27 18:19:24,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 322 transitions, 3728 flow [2024-06-27 18:19:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:19:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:19:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:19:24,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229591836734694 [2024-06-27 18:19:24,480 INFO L175 Difference]: Start difference. First operand has 207 places, 280 transitions, 2928 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:19:24,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 322 transitions, 3728 flow [2024-06-27 18:19:25,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 322 transitions, 3494 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:25,131 INFO L231 Difference]: Finished difference. Result has 208 places, 284 transitions, 2875 flow [2024-06-27 18:19:25,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2875, PETRI_PLACES=208, PETRI_TRANSITIONS=284} [2024-06-27 18:19:25,133 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 153 predicate places. [2024-06-27 18:19:25,133 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 284 transitions, 2875 flow [2024-06-27 18:19:25,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:25,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:25,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:25,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:19:25,134 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:25,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:25,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1793422801, now seen corresponding path program 5 times [2024-06-27 18:19:25,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:25,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436361083] [2024-06-27 18:19:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:25,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:25,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436361083] [2024-06-27 18:19:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436361083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:25,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:25,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232150255] [2024-06-27 18:19:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:25,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:25,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:25,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 284 transitions, 2875 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:25,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:25,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:25,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:27,973 INFO L124 PetriNetUnfolderBase]: 6646/10716 cut-off events. [2024-06-27 18:19:27,974 INFO L125 PetriNetUnfolderBase]: For 524572/524592 co-relation queries the response was YES. [2024-06-27 18:19:28,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71421 conditions, 10716 events. 6646/10716 cut-off events. For 524572/524592 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 72434 event pairs, 1384 based on Foata normal form. 32/10541 useless extension candidates. Maximal degree in co-relation 71325. Up to 7811 conditions per place. [2024-06-27 18:19:28,122 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 235 selfloop transitions, 113 changer transitions 0/358 dead transitions. [2024-06-27 18:19:28,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 358 transitions, 4129 flow [2024-06-27 18:19:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:28,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-27 18:19:28,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564625850340136 [2024-06-27 18:19:28,124 INFO L175 Difference]: Start difference. First operand has 208 places, 284 transitions, 2875 flow. Second operand 9 states and 249 transitions. [2024-06-27 18:19:28,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 358 transitions, 4129 flow [2024-06-27 18:19:28,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 358 transitions, 3976 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:28,754 INFO L231 Difference]: Finished difference. Result has 211 places, 286 transitions, 3020 flow [2024-06-27 18:19:28,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3020, PETRI_PLACES=211, PETRI_TRANSITIONS=286} [2024-06-27 18:19:28,754 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 156 predicate places. [2024-06-27 18:19:28,754 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 286 transitions, 3020 flow [2024-06-27 18:19:28,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:28,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:28,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:28,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:19:28,755 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:28,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1439894273, now seen corresponding path program 6 times [2024-06-27 18:19:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:28,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126900993] [2024-06-27 18:19:28,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:28,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:29,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:29,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126900993] [2024-06-27 18:19:29,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126900993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:29,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:29,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637830189] [2024-06-27 18:19:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:29,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:29,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 286 transitions, 3020 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:29,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:29,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:29,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:31,938 INFO L124 PetriNetUnfolderBase]: 6813/11043 cut-off events. [2024-06-27 18:19:31,938 INFO L125 PetriNetUnfolderBase]: For 554916/554936 co-relation queries the response was YES. [2024-06-27 18:19:32,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74097 conditions, 11043 events. 6813/11043 cut-off events. For 554916/554936 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 75594 event pairs, 1848 based on Foata normal form. 36/10858 useless extension candidates. Maximal degree in co-relation 74000. Up to 8719 conditions per place. [2024-06-27 18:19:32,083 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 234 selfloop transitions, 109 changer transitions 0/353 dead transitions. [2024-06-27 18:19:32,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 353 transitions, 4024 flow [2024-06-27 18:19:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:19:32,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:19:32,085 INFO L175 Difference]: Start difference. First operand has 211 places, 286 transitions, 3020 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:19:32,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 353 transitions, 4024 flow [2024-06-27 18:19:32,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 353 transitions, 3866 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:19:32,777 INFO L231 Difference]: Finished difference. Result has 215 places, 287 transitions, 3123 flow [2024-06-27 18:19:32,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3123, PETRI_PLACES=215, PETRI_TRANSITIONS=287} [2024-06-27 18:19:32,778 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 160 predicate places. [2024-06-27 18:19:32,778 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 287 transitions, 3123 flow [2024-06-27 18:19:32,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:32,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:32,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:32,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:19:32,779 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:32,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:32,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1845641541, now seen corresponding path program 7 times [2024-06-27 18:19:32,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:32,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910722228] [2024-06-27 18:19:32,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:33,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:33,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910722228] [2024-06-27 18:19:33,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910722228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:33,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:33,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:33,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445463161] [2024-06-27 18:19:33,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:33,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:33,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:33,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:33,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 287 transitions, 3123 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:33,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:33,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:33,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:35,887 INFO L124 PetriNetUnfolderBase]: 6943/11226 cut-off events. [2024-06-27 18:19:35,887 INFO L125 PetriNetUnfolderBase]: For 567337/567357 co-relation queries the response was YES. [2024-06-27 18:19:35,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75932 conditions, 11226 events. 6943/11226 cut-off events. For 567337/567357 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 76741 event pairs, 1823 based on Foata normal form. 32/11043 useless extension candidates. Maximal degree in co-relation 75833. Up to 8715 conditions per place. [2024-06-27 18:19:36,052 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 237 selfloop transitions, 111 changer transitions 0/358 dead transitions. [2024-06-27 18:19:36,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 358 transitions, 4153 flow [2024-06-27 18:19:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-27 18:19:36,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5600907029478458 [2024-06-27 18:19:36,054 INFO L175 Difference]: Start difference. First operand has 215 places, 287 transitions, 3123 flow. Second operand 9 states and 247 transitions. [2024-06-27 18:19:36,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 358 transitions, 4153 flow [2024-06-27 18:19:36,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 358 transitions, 3918 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:36,881 INFO L231 Difference]: Finished difference. Result has 217 places, 288 transitions, 3154 flow [2024-06-27 18:19:36,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3154, PETRI_PLACES=217, PETRI_TRANSITIONS=288} [2024-06-27 18:19:36,881 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 162 predicate places. [2024-06-27 18:19:36,881 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 288 transitions, 3154 flow [2024-06-27 18:19:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:36,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:36,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:36,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:19:36,882 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:36,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:36,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1679230131, now seen corresponding path program 8 times [2024-06-27 18:19:36,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:36,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766788002] [2024-06-27 18:19:36,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:36,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:37,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:37,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766788002] [2024-06-27 18:19:37,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766788002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:37,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:37,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987924040] [2024-06-27 18:19:37,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:37,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:37,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:37,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:37,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 288 transitions, 3154 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:37,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:37,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:37,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:40,058 INFO L124 PetriNetUnfolderBase]: 7110/11544 cut-off events. [2024-06-27 18:19:40,059 INFO L125 PetriNetUnfolderBase]: For 593443/593451 co-relation queries the response was YES. [2024-06-27 18:19:40,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77716 conditions, 11544 events. 7110/11544 cut-off events. For 593443/593451 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 79758 event pairs, 1942 based on Foata normal form. 22/11327 useless extension candidates. Maximal degree in co-relation 77616. Up to 9178 conditions per place. [2024-06-27 18:19:40,219 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 237 selfloop transitions, 104 changer transitions 0/351 dead transitions. [2024-06-27 18:19:40,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 351 transitions, 4138 flow [2024-06-27 18:19:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 18:19:40,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546485260770975 [2024-06-27 18:19:40,221 INFO L175 Difference]: Start difference. First operand has 217 places, 288 transitions, 3154 flow. Second operand 9 states and 241 transitions. [2024-06-27 18:19:40,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 351 transitions, 4138 flow [2024-06-27 18:19:40,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 351 transitions, 3892 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:40,914 INFO L231 Difference]: Finished difference. Result has 219 places, 289 transitions, 3163 flow [2024-06-27 18:19:40,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3163, PETRI_PLACES=219, PETRI_TRANSITIONS=289} [2024-06-27 18:19:40,916 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 164 predicate places. [2024-06-27 18:19:40,916 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 289 transitions, 3163 flow [2024-06-27 18:19:40,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:40,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:40,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:40,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:19:40,920 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:40,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:40,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2116132445, now seen corresponding path program 9 times [2024-06-27 18:19:40,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:40,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512013668] [2024-06-27 18:19:40,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:41,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:41,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512013668] [2024-06-27 18:19:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512013668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:41,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:41,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:41,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276981643] [2024-06-27 18:19:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:41,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:41,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:41,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:41,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 289 transitions, 3163 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:41,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:41,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:41,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:44,187 INFO L124 PetriNetUnfolderBase]: 7277/11852 cut-off events. [2024-06-27 18:19:44,187 INFO L125 PetriNetUnfolderBase]: For 614864/614872 co-relation queries the response was YES. [2024-06-27 18:19:44,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79331 conditions, 11852 events. 7277/11852 cut-off events. For 614864/614872 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 82542 event pairs, 1991 based on Foata normal form. 22/11625 useless extension candidates. Maximal degree in co-relation 79230. Up to 9435 conditions per place. [2024-06-27 18:19:44,451 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 236 selfloop transitions, 105 changer transitions 0/351 dead transitions. [2024-06-27 18:19:44,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 351 transitions, 4145 flow [2024-06-27 18:19:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:19:44,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-27 18:19:44,453 INFO L175 Difference]: Start difference. First operand has 219 places, 289 transitions, 3163 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:19:44,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 351 transitions, 4145 flow [2024-06-27 18:19:45,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 351 transitions, 3916 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:45,134 INFO L231 Difference]: Finished difference. Result has 221 places, 290 transitions, 3193 flow [2024-06-27 18:19:45,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3193, PETRI_PLACES=221, PETRI_TRANSITIONS=290} [2024-06-27 18:19:45,135 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 166 predicate places. [2024-06-27 18:19:45,135 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 290 transitions, 3193 flow [2024-06-27 18:19:45,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:45,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:45,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:45,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:19:45,136 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:45,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1679407761, now seen corresponding path program 10 times [2024-06-27 18:19:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063472370] [2024-06-27 18:19:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:45,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:45,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063472370] [2024-06-27 18:19:45,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063472370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:45,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:45,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:19:45,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458450054] [2024-06-27 18:19:45,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:45,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:19:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:19:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:19:45,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:19:45,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 290 transitions, 3193 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:45,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:45,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:19:45,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:48,117 INFO L124 PetriNetUnfolderBase]: 7407/12007 cut-off events. [2024-06-27 18:19:48,118 INFO L125 PetriNetUnfolderBase]: For 626956/626964 co-relation queries the response was YES. [2024-06-27 18:19:48,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80490 conditions, 12007 events. 7407/12007 cut-off events. For 626956/626964 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 83380 event pairs, 1958 based on Foata normal form. 18/11791 useless extension candidates. Maximal degree in co-relation 80388. Up to 9207 conditions per place. [2024-06-27 18:19:48,301 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 239 selfloop transitions, 107 changer transitions 0/356 dead transitions. [2024-06-27 18:19:48,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 356 transitions, 4201 flow [2024-06-27 18:19:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 18:19:48,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-06-27 18:19:48,303 INFO L175 Difference]: Start difference. First operand has 221 places, 290 transitions, 3193 flow. Second operand 9 states and 243 transitions. [2024-06-27 18:19:48,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 356 transitions, 4201 flow [2024-06-27 18:19:49,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 356 transitions, 3968 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:49,055 INFO L231 Difference]: Finished difference. Result has 223 places, 291 transitions, 3224 flow [2024-06-27 18:19:49,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3224, PETRI_PLACES=223, PETRI_TRANSITIONS=291} [2024-06-27 18:19:49,055 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 168 predicate places. [2024-06-27 18:19:49,055 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 291 transitions, 3224 flow [2024-06-27 18:19:49,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:49,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:49,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:49,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:19:49,056 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:49,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:49,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1435251017, now seen corresponding path program 1 times [2024-06-27 18:19:49,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:49,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874659097] [2024-06-27 18:19:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:49,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:49,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:49,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874659097] [2024-06-27 18:19:49,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874659097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:49,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:49,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:49,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084296189] [2024-06-27 18:19:49,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:49,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:49,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:49,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:49,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:49,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:19:49,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 291 transitions, 3224 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:49,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:49,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:19:49,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:51,899 INFO L124 PetriNetUnfolderBase]: 7071/11682 cut-off events. [2024-06-27 18:19:51,899 INFO L125 PetriNetUnfolderBase]: For 614697/614721 co-relation queries the response was YES. [2024-06-27 18:19:51,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78297 conditions, 11682 events. 7071/11682 cut-off events. For 614697/614721 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 83251 event pairs, 2169 based on Foata normal form. 24/11399 useless extension candidates. Maximal degree in co-relation 78194. Up to 9955 conditions per place. [2024-06-27 18:19:52,053 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 253 selfloop transitions, 44 changer transitions 0/326 dead transitions. [2024-06-27 18:19:52,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 326 transitions, 3986 flow [2024-06-27 18:19:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:19:52,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521865889212828 [2024-06-27 18:19:52,055 INFO L175 Difference]: Start difference. First operand has 223 places, 291 transitions, 3224 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:19:52,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 326 transitions, 3986 flow [2024-06-27 18:19:52,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 326 transitions, 3742 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:52,743 INFO L231 Difference]: Finished difference. Result has 223 places, 296 transitions, 3147 flow [2024-06-27 18:19:52,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3147, PETRI_PLACES=223, PETRI_TRANSITIONS=296} [2024-06-27 18:19:52,744 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 168 predicate places. [2024-06-27 18:19:52,744 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 296 transitions, 3147 flow [2024-06-27 18:19:52,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:52,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:52,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:52,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:19:52,744 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:52,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash 2143046147, now seen corresponding path program 2 times [2024-06-27 18:19:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:52,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336801734] [2024-06-27 18:19:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:53,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:53,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336801734] [2024-06-27 18:19:53,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336801734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:53,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:53,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:19:53,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459156867] [2024-06-27 18:19:53,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:53,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:19:53,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:53,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:19:53,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:19:53,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:19:53,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 296 transitions, 3147 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:53,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:53,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:19:53,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:55,672 INFO L124 PetriNetUnfolderBase]: 7085/11700 cut-off events. [2024-06-27 18:19:55,672 INFO L125 PetriNetUnfolderBase]: For 615456/615480 co-relation queries the response was YES. [2024-06-27 18:19:55,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77256 conditions, 11700 events. 7085/11700 cut-off events. For 615456/615480 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 83369 event pairs, 2174 based on Foata normal form. 24/11418 useless extension candidates. Maximal degree in co-relation 77152. Up to 9858 conditions per place. [2024-06-27 18:19:55,814 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 245 selfloop transitions, 53 changer transitions 0/327 dead transitions. [2024-06-27 18:19:55,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 327 transitions, 4029 flow [2024-06-27 18:19:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:19:55,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:19:55,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 18:19:55,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521865889212828 [2024-06-27 18:19:55,815 INFO L175 Difference]: Start difference. First operand has 223 places, 296 transitions, 3147 flow. Second operand 7 states and 179 transitions. [2024-06-27 18:19:55,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 327 transitions, 4029 flow [2024-06-27 18:19:56,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 327 transitions, 3951 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:19:56,623 INFO L231 Difference]: Finished difference. Result has 227 places, 299 transitions, 3240 flow [2024-06-27 18:19:56,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3069, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3240, PETRI_PLACES=227, PETRI_TRANSITIONS=299} [2024-06-27 18:19:56,639 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 172 predicate places. [2024-06-27 18:19:56,640 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 299 transitions, 3240 flow [2024-06-27 18:19:56,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:56,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:56,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:56,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:19:56,640 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:19:56,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:56,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1776016371, now seen corresponding path program 2 times [2024-06-27 18:19:56,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:56,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134224287] [2024-06-27 18:19:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:56,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134224287] [2024-06-27 18:19:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134224287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:57,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:19:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37107282] [2024-06-27 18:19:57,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:57,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:19:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:19:57,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:19:57,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:19:57,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 299 transitions, 3240 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:57,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:57,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:19:57,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:59,954 INFO L124 PetriNetUnfolderBase]: 7181/11845 cut-off events. [2024-06-27 18:19:59,954 INFO L125 PetriNetUnfolderBase]: For 640316/640340 co-relation queries the response was YES. [2024-06-27 18:20:00,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78845 conditions, 11845 events. 7181/11845 cut-off events. For 640316/640340 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 84426 event pairs, 2172 based on Foata normal form. 24/11560 useless extension candidates. Maximal degree in co-relation 78740. Up to 9845 conditions per place. [2024-06-27 18:20:00,092 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 251 selfloop transitions, 62 changer transitions 0/342 dead transitions. [2024-06-27 18:20:00,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 342 transitions, 4444 flow [2024-06-27 18:20:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 18:20:00,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204081632653061 [2024-06-27 18:20:00,094 INFO L175 Difference]: Start difference. First operand has 227 places, 299 transitions, 3240 flow. Second operand 8 states and 204 transitions. [2024-06-27 18:20:00,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 342 transitions, 4444 flow [2024-06-27 18:20:00,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 342 transitions, 4328 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:00,976 INFO L231 Difference]: Finished difference. Result has 232 places, 307 transitions, 3436 flow [2024-06-27 18:20:00,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3436, PETRI_PLACES=232, PETRI_TRANSITIONS=307} [2024-06-27 18:20:00,978 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2024-06-27 18:20:00,978 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 307 transitions, 3436 flow [2024-06-27 18:20:00,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:00,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:00,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:00,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:20:00,978 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:00,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1427591785, now seen corresponding path program 1 times [2024-06-27 18:20:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321436128] [2024-06-27 18:20:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:01,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:01,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321436128] [2024-06-27 18:20:01,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321436128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:01,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:01,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:01,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196251558] [2024-06-27 18:20:01,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:01,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:01,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:01,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:02,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:20:02,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 307 transitions, 3436 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:02,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:02,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:20:02,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:04,449 INFO L124 PetriNetUnfolderBase]: 7215/11893 cut-off events. [2024-06-27 18:20:04,450 INFO L125 PetriNetUnfolderBase]: For 668853/668883 co-relation queries the response was YES. [2024-06-27 18:20:04,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81042 conditions, 11893 events. 7215/11893 cut-off events. For 668853/668883 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 84683 event pairs, 2162 based on Foata normal form. 32/11617 useless extension candidates. Maximal degree in co-relation 80935. Up to 10305 conditions per place. [2024-06-27 18:20:04,597 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 296 selfloop transitions, 21 changer transitions 0/346 dead transitions. [2024-06-27 18:20:04,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 346 transitions, 4286 flow [2024-06-27 18:20:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:20:04,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49744897959183676 [2024-06-27 18:20:04,598 INFO L175 Difference]: Start difference. First operand has 232 places, 307 transitions, 3436 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:20:04,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 346 transitions, 4286 flow [2024-06-27 18:20:05,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 346 transitions, 4133 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:05,328 INFO L231 Difference]: Finished difference. Result has 236 places, 310 transitions, 3409 flow [2024-06-27 18:20:05,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3409, PETRI_PLACES=236, PETRI_TRANSITIONS=310} [2024-06-27 18:20:05,329 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-27 18:20:05,329 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 310 transitions, 3409 flow [2024-06-27 18:20:05,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:05,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:05,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:05,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:20:05,330 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:05,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:05,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1776002421, now seen corresponding path program 3 times [2024-06-27 18:20:05,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:05,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933631318] [2024-06-27 18:20:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:05,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:06,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:06,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933631318] [2024-06-27 18:20:06,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933631318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:06,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:06,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:20:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858206999] [2024-06-27 18:20:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:06,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:20:06,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:20:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:20:06,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:20:06,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 310 transitions, 3409 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:06,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:06,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:20:06,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:08,792 INFO L124 PetriNetUnfolderBase]: 7231/11901 cut-off events. [2024-06-27 18:20:08,793 INFO L125 PetriNetUnfolderBase]: For 683090/683114 co-relation queries the response was YES. [2024-06-27 18:20:08,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81765 conditions, 11901 events. 7231/11901 cut-off events. For 683090/683114 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 84539 event pairs, 2183 based on Foata normal form. 24/11620 useless extension candidates. Maximal degree in co-relation 81656. Up to 10033 conditions per place. [2024-06-27 18:20:08,969 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 260 selfloop transitions, 58 changer transitions 0/347 dead transitions. [2024-06-27 18:20:08,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 347 transitions, 4386 flow [2024-06-27 18:20:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:20:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:20:08,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 18:20:08,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153061224489796 [2024-06-27 18:20:08,971 INFO L175 Difference]: Start difference. First operand has 236 places, 310 transitions, 3409 flow. Second operand 8 states and 202 transitions. [2024-06-27 18:20:08,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 347 transitions, 4386 flow [2024-06-27 18:20:09,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 347 transitions, 4282 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:09,771 INFO L231 Difference]: Finished difference. Result has 238 places, 314 transitions, 3515 flow [2024-06-27 18:20:09,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3305, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3515, PETRI_PLACES=238, PETRI_TRANSITIONS=314} [2024-06-27 18:20:09,773 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 183 predicate places. [2024-06-27 18:20:09,773 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 314 transitions, 3515 flow [2024-06-27 18:20:09,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:09,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:09,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:09,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:20:09,797 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:09,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:09,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2099755183, now seen corresponding path program 11 times [2024-06-27 18:20:09,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:09,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151524834] [2024-06-27 18:20:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:09,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:10,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:10,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151524834] [2024-06-27 18:20:10,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151524834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:10,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:10,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:10,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558454849] [2024-06-27 18:20:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:10,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:10,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:10,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:10,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 314 transitions, 3515 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:10,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:10,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:10,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:13,119 INFO L124 PetriNetUnfolderBase]: 7768/12621 cut-off events. [2024-06-27 18:20:13,120 INFO L125 PetriNetUnfolderBase]: For 744353/744361 co-relation queries the response was YES. [2024-06-27 18:20:13,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86586 conditions, 12621 events. 7768/12621 cut-off events. For 744353/744361 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 88418 event pairs, 2082 based on Foata normal form. 26/12385 useless extension candidates. Maximal degree in co-relation 86476. Up to 10157 conditions per place. [2024-06-27 18:20:13,317 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 259 selfloop transitions, 104 changer transitions 0/373 dead transitions. [2024-06-27 18:20:13,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 373 transitions, 4527 flow [2024-06-27 18:20:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 18:20:13,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528344671201814 [2024-06-27 18:20:13,319 INFO L175 Difference]: Start difference. First operand has 238 places, 314 transitions, 3515 flow. Second operand 9 states and 233 transitions. [2024-06-27 18:20:13,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 373 transitions, 4527 flow [2024-06-27 18:20:14,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 373 transitions, 4354 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:14,472 INFO L231 Difference]: Finished difference. Result has 241 places, 315 transitions, 3603 flow [2024-06-27 18:20:14,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3342, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3603, PETRI_PLACES=241, PETRI_TRANSITIONS=315} [2024-06-27 18:20:14,473 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 186 predicate places. [2024-06-27 18:20:14,473 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 315 transitions, 3603 flow [2024-06-27 18:20:14,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:14,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:14,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:14,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:20:14,474 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:14,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:14,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1563049441, now seen corresponding path program 12 times [2024-06-27 18:20:14,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:14,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188698854] [2024-06-27 18:20:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:14,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:15,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:15,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188698854] [2024-06-27 18:20:15,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188698854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:15,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:15,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440536945] [2024-06-27 18:20:15,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:15,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:15,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:15,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:15,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:15,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:15,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 315 transitions, 3603 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:15,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:15,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:15,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:17,832 INFO L124 PetriNetUnfolderBase]: 7935/12920 cut-off events. [2024-06-27 18:20:17,832 INFO L125 PetriNetUnfolderBase]: For 778748/778756 co-relation queries the response was YES. [2024-06-27 18:20:17,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89355 conditions, 12920 events. 7935/12920 cut-off events. For 778748/778756 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 91140 event pairs, 2135 based on Foata normal form. 26/12679 useless extension candidates. Maximal degree in co-relation 89244. Up to 10414 conditions per place. [2024-06-27 18:20:18,005 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 264 selfloop transitions, 101 changer transitions 0/375 dead transitions. [2024-06-27 18:20:18,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 375 transitions, 4625 flow [2024-06-27 18:20:18,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-27 18:20:18,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328798185941043 [2024-06-27 18:20:18,007 INFO L175 Difference]: Start difference. First operand has 241 places, 315 transitions, 3603 flow. Second operand 9 states and 235 transitions. [2024-06-27 18:20:18,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 375 transitions, 4625 flow [2024-06-27 18:20:19,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 375 transitions, 4390 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:19,062 INFO L231 Difference]: Finished difference. Result has 243 places, 316 transitions, 3625 flow [2024-06-27 18:20:19,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3368, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3625, PETRI_PLACES=243, PETRI_TRANSITIONS=316} [2024-06-27 18:20:19,063 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 188 predicate places. [2024-06-27 18:20:19,063 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 316 transitions, 3625 flow [2024-06-27 18:20:19,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:19,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:19,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:19,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:20:19,063 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:19,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1563227071, now seen corresponding path program 13 times [2024-06-27 18:20:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:19,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116852624] [2024-06-27 18:20:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:19,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:19,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:19,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116852624] [2024-06-27 18:20:19,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116852624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:19,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:19,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:19,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753806839] [2024-06-27 18:20:19,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:19,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:19,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:19,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:19,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:19,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 316 transitions, 3625 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:19,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:19,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:19,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:22,523 INFO L124 PetriNetUnfolderBase]: 8065/13065 cut-off events. [2024-06-27 18:20:22,524 INFO L125 PetriNetUnfolderBase]: For 790926/790934 co-relation queries the response was YES. [2024-06-27 18:20:22,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90424 conditions, 13065 events. 8065/13065 cut-off events. For 790926/790934 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 91783 event pairs, 2081 based on Foata normal form. 22/12833 useless extension candidates. Maximal degree in co-relation 90312. Up to 9916 conditions per place. [2024-06-27 18:20:22,685 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 266 selfloop transitions, 105 changer transitions 0/381 dead transitions. [2024-06-27 18:20:22,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 381 transitions, 4911 flow [2024-06-27 18:20:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-27 18:20:22,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419501133786848 [2024-06-27 18:20:22,687 INFO L175 Difference]: Start difference. First operand has 243 places, 316 transitions, 3625 flow. Second operand 9 states and 239 transitions. [2024-06-27 18:20:22,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 381 transitions, 4911 flow [2024-06-27 18:20:23,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 381 transitions, 4680 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:23,771 INFO L231 Difference]: Finished difference. Result has 245 places, 317 transitions, 3658 flow [2024-06-27 18:20:23,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3658, PETRI_PLACES=245, PETRI_TRANSITIONS=317} [2024-06-27 18:20:23,772 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 190 predicate places. [2024-06-27 18:20:23,772 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 317 transitions, 3658 flow [2024-06-27 18:20:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:23,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:23,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:23,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:20:23,773 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:23,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash 922282703, now seen corresponding path program 14 times [2024-06-27 18:20:23,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:23,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086655519] [2024-06-27 18:20:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:23,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:24,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:24,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086655519] [2024-06-27 18:20:24,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086655519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:24,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:24,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:20:24,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448316874] [2024-06-27 18:20:24,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:24,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:20:24,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:24,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:20:24,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:20:25,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:25,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 317 transitions, 3658 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:25,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:25,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:25,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:27,928 INFO L124 PetriNetUnfolderBase]: 8029/13078 cut-off events. [2024-06-27 18:20:27,929 INFO L125 PetriNetUnfolderBase]: For 768510/768518 co-relation queries the response was YES. [2024-06-27 18:20:28,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88469 conditions, 13078 events. 8029/13078 cut-off events. For 768510/768518 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 92499 event pairs, 2141 based on Foata normal form. 26/12834 useless extension candidates. Maximal degree in co-relation 88356. Up to 10560 conditions per place. [2024-06-27 18:20:28,082 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 266 selfloop transitions, 100 changer transitions 0/376 dead transitions. [2024-06-27 18:20:28,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 376 transitions, 4636 flow [2024-06-27 18:20:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:20:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:20:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 18:20:28,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351473922902494 [2024-06-27 18:20:28,084 INFO L175 Difference]: Start difference. First operand has 245 places, 317 transitions, 3658 flow. Second operand 9 states and 236 transitions. [2024-06-27 18:20:28,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 376 transitions, 4636 flow [2024-06-27 18:20:29,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 376 transitions, 4340 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:29,388 INFO L231 Difference]: Finished difference. Result has 247 places, 317 transitions, 3569 flow [2024-06-27 18:20:29,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3569, PETRI_PLACES=247, PETRI_TRANSITIONS=317} [2024-06-27 18:20:29,388 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 192 predicate places. [2024-06-27 18:20:29,389 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 317 transitions, 3569 flow [2024-06-27 18:20:29,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:29,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:29,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:20:29,389 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:29,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1316456001, now seen corresponding path program 3 times [2024-06-27 18:20:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:29,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026028965] [2024-06-27 18:20:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:29,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:30,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:30,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026028965] [2024-06-27 18:20:30,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026028965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:30,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:30,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:30,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749831696] [2024-06-27 18:20:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:30,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:30,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:30,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:20:30,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 317 transitions, 3569 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:30,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:30,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:20:30,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:32,376 INFO L124 PetriNetUnfolderBase]: 7638/12605 cut-off events. [2024-06-27 18:20:32,376 INFO L125 PetriNetUnfolderBase]: For 715668/715678 co-relation queries the response was YES. [2024-06-27 18:20:32,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84129 conditions, 12605 events. 7638/12605 cut-off events. For 715668/715678 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 90695 event pairs, 2331 based on Foata normal form. 9/12266 useless extension candidates. Maximal degree in co-relation 84015. Up to 10818 conditions per place. [2024-06-27 18:20:32,558 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 273 selfloop transitions, 44 changer transitions 0/346 dead transitions. [2024-06-27 18:20:32,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 346 transitions, 4311 flow [2024-06-27 18:20:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:20:32,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:20:32,559 INFO L175 Difference]: Start difference. First operand has 247 places, 317 transitions, 3569 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:20:32,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 346 transitions, 4311 flow [2024-06-27 18:20:33,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 346 transitions, 4072 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:33,983 INFO L231 Difference]: Finished difference. Result has 246 places, 317 transitions, 3425 flow [2024-06-27 18:20:33,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3330, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3425, PETRI_PLACES=246, PETRI_TRANSITIONS=317} [2024-06-27 18:20:33,984 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 191 predicate places. [2024-06-27 18:20:33,984 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 317 transitions, 3425 flow [2024-06-27 18:20:33,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:33,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:33,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:20:33,985 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:33,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1317137597, now seen corresponding path program 4 times [2024-06-27 18:20:33,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:33,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839237350] [2024-06-27 18:20:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:34,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:34,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839237350] [2024-06-27 18:20:34,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839237350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:34,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:34,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244131888] [2024-06-27 18:20:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:34,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:34,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:34,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:20:34,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 317 transitions, 3425 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:34,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:34,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:20:34,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:37,342 INFO L124 PetriNetUnfolderBase]: 7655/12628 cut-off events. [2024-06-27 18:20:37,342 INFO L125 PetriNetUnfolderBase]: For 727438/727448 co-relation queries the response was YES. [2024-06-27 18:20:37,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83698 conditions, 12628 events. 7655/12628 cut-off events. For 727438/727448 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 90868 event pairs, 2317 based on Foata normal form. 9/12289 useless extension candidates. Maximal degree in co-relation 83583. Up to 10787 conditions per place. [2024-06-27 18:20:37,492 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 265 selfloop transitions, 53 changer transitions 0/347 dead transitions. [2024-06-27 18:20:37,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 347 transitions, 4217 flow [2024-06-27 18:20:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:20:37,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:20:37,494 INFO L175 Difference]: Start difference. First operand has 246 places, 317 transitions, 3425 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:20:37,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 347 transitions, 4217 flow [2024-06-27 18:20:38,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 347 transitions, 4023 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:38,744 INFO L231 Difference]: Finished difference. Result has 245 places, 320 transitions, 3399 flow [2024-06-27 18:20:38,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3399, PETRI_PLACES=245, PETRI_TRANSITIONS=320} [2024-06-27 18:20:38,745 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 190 predicate places. [2024-06-27 18:20:38,745 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 320 transitions, 3399 flow [2024-06-27 18:20:38,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:38,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:38,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:38,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:20:38,746 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:38,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:38,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1732366437, now seen corresponding path program 5 times [2024-06-27 18:20:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:38,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323258460] [2024-06-27 18:20:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:39,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323258460] [2024-06-27 18:20:39,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323258460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:39,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:39,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:39,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980733172] [2024-06-27 18:20:39,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:39,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:39,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:39,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:39,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:39,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:20:39,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 320 transitions, 3399 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:39,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:39,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:20:39,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:42,249 INFO L124 PetriNetUnfolderBase]: 7674/12915 cut-off events. [2024-06-27 18:20:42,250 INFO L125 PetriNetUnfolderBase]: For 744454/744470 co-relation queries the response was YES. [2024-06-27 18:20:42,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84282 conditions, 12915 events. 7674/12915 cut-off events. For 744454/744470 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 95198 event pairs, 2294 based on Foata normal form. 15/12510 useless extension candidates. Maximal degree in co-relation 84166. Up to 10608 conditions per place. [2024-06-27 18:20:42,418 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 246 selfloop transitions, 73 changer transitions 0/348 dead transitions. [2024-06-27 18:20:42,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 348 transitions, 4345 flow [2024-06-27 18:20:42,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:20:42,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:20:42,419 INFO L175 Difference]: Start difference. First operand has 245 places, 320 transitions, 3399 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:20:42,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 348 transitions, 4345 flow [2024-06-27 18:20:43,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 348 transitions, 4209 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:20:43,300 INFO L231 Difference]: Finished difference. Result has 247 places, 323 transitions, 3471 flow [2024-06-27 18:20:43,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3471, PETRI_PLACES=247, PETRI_TRANSITIONS=323} [2024-06-27 18:20:43,300 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 192 predicate places. [2024-06-27 18:20:43,301 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 323 transitions, 3471 flow [2024-06-27 18:20:43,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:43,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:43,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:43,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:20:43,301 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:43,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash -944307411, now seen corresponding path program 6 times [2024-06-27 18:20:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:43,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937843714] [2024-06-27 18:20:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:43,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:44,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:44,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937843714] [2024-06-27 18:20:44,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937843714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:44,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:44,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:20:44,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040624792] [2024-06-27 18:20:44,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:44,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:20:44,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:20:44,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:20:44,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-06-27 18:20:44,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 323 transitions, 3471 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:44,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:44,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-06-27 18:20:44,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:46,759 INFO L124 PetriNetUnfolderBase]: 7666/12907 cut-off events. [2024-06-27 18:20:46,760 INFO L125 PetriNetUnfolderBase]: For 757918/757934 co-relation queries the response was YES. [2024-06-27 18:20:46,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84361 conditions, 12907 events. 7666/12907 cut-off events. For 757918/757934 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 95290 event pairs, 2292 based on Foata normal form. 16/12503 useless extension candidates. Maximal degree in co-relation 84244. Up to 10600 conditions per place. [2024-06-27 18:20:46,929 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 249 selfloop transitions, 69 changer transitions 0/347 dead transitions. [2024-06-27 18:20:46,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 347 transitions, 4207 flow [2024-06-27 18:20:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:20:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:20:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:20:46,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-27 18:20:46,930 INFO L175 Difference]: Start difference. First operand has 247 places, 323 transitions, 3471 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:20:46,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 347 transitions, 4207 flow [2024-06-27 18:20:48,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 347 transitions, 4000 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 18:20:48,039 INFO L231 Difference]: Finished difference. Result has 250 places, 323 transitions, 3410 flow [2024-06-27 18:20:48,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3410, PETRI_PLACES=250, PETRI_TRANSITIONS=323} [2024-06-27 18:20:48,040 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 195 predicate places. [2024-06-27 18:20:48,040 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 323 transitions, 3410 flow [2024-06-27 18:20:48,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:48,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:48,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:48,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:20:48,041 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:48,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:48,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1899746649, now seen corresponding path program 1 times [2024-06-27 18:20:48,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:48,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729770180] [2024-06-27 18:20:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:48,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:49,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:49,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729770180] [2024-06-27 18:20:49,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729770180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:49,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:49,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:49,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126451429] [2024-06-27 18:20:49,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:49,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:49,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:49,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:49,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 323 transitions, 3410 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:49,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:49,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:49,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:52,482 INFO L124 PetriNetUnfolderBase]: 8108/13252 cut-off events. [2024-06-27 18:20:52,483 INFO L125 PetriNetUnfolderBase]: For 779241/779243 co-relation queries the response was YES. [2024-06-27 18:20:52,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87256 conditions, 13252 events. 8108/13252 cut-off events. For 779241/779243 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 94444 event pairs, 2194 based on Foata normal form. 4/12960 useless extension candidates. Maximal degree in co-relation 87138. Up to 10845 conditions per place. [2024-06-27 18:20:52,673 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 257 selfloop transitions, 133 changer transitions 0/400 dead transitions. [2024-06-27 18:20:52,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 400 transitions, 4598 flow [2024-06-27 18:20:52,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 18:20:52,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-06-27 18:20:52,674 INFO L175 Difference]: Start difference. First operand has 250 places, 323 transitions, 3410 flow. Second operand 10 states and 258 transitions. [2024-06-27 18:20:52,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 400 transitions, 4598 flow [2024-06-27 18:20:54,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 400 transitions, 4433 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:54,161 INFO L231 Difference]: Finished difference. Result has 254 places, 338 transitions, 3697 flow [2024-06-27 18:20:54,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3697, PETRI_PLACES=254, PETRI_TRANSITIONS=338} [2024-06-27 18:20:54,161 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 199 predicate places. [2024-06-27 18:20:54,161 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 338 transitions, 3697 flow [2024-06-27 18:20:54,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:54,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:54,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:54,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:20:54,162 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:20:54,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1001740297, now seen corresponding path program 2 times [2024-06-27 18:20:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:54,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320575196] [2024-06-27 18:20:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:54,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:55,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:55,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:55,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320575196] [2024-06-27 18:20:55,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320575196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:55,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:55,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:55,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458516411] [2024-06-27 18:20:55,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:55,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:55,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:55,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:55,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:55,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:20:55,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 338 transitions, 3697 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:55,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:55,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:20:55,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:58,292 INFO L124 PetriNetUnfolderBase]: 8145/13295 cut-off events. [2024-06-27 18:20:58,293 INFO L125 PetriNetUnfolderBase]: For 807395/807397 co-relation queries the response was YES. [2024-06-27 18:20:58,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89641 conditions, 13295 events. 8145/13295 cut-off events. For 807395/807397 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 94620 event pairs, 2207 based on Foata normal form. 4/13005 useless extension candidates. Maximal degree in co-relation 89521. Up to 10900 conditions per place. [2024-06-27 18:20:58,470 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 272 selfloop transitions, 125 changer transitions 0/407 dead transitions. [2024-06-27 18:20:58,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 407 transitions, 4853 flow [2024-06-27 18:20:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 18:20:58,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265306122448979 [2024-06-27 18:20:58,472 INFO L175 Difference]: Start difference. First operand has 254 places, 338 transitions, 3697 flow. Second operand 10 states and 258 transitions. [2024-06-27 18:20:58,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 407 transitions, 4853 flow [2024-06-27 18:21:00,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 407 transitions, 4567 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 18:21:00,067 INFO L231 Difference]: Finished difference. Result has 260 places, 341 transitions, 3755 flow [2024-06-27 18:21:00,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3413, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3755, PETRI_PLACES=260, PETRI_TRANSITIONS=341} [2024-06-27 18:21:00,068 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 205 predicate places. [2024-06-27 18:21:00,068 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 341 transitions, 3755 flow [2024-06-27 18:21:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:00,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:00,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:21:00,069 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:00,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash 269983783, now seen corresponding path program 3 times [2024-06-27 18:21:00,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:00,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838333800] [2024-06-27 18:21:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:01,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838333800] [2024-06-27 18:21:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838333800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:01,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923543670] [2024-06-27 18:21:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:01,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:01,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 341 transitions, 3755 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:01,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:01,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:01,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:04,207 INFO L124 PetriNetUnfolderBase]: 8230/13435 cut-off events. [2024-06-27 18:21:04,207 INFO L125 PetriNetUnfolderBase]: For 818515/818517 co-relation queries the response was YES. [2024-06-27 18:21:04,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89637 conditions, 13435 events. 8230/13435 cut-off events. For 818515/818517 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 95880 event pairs, 1984 based on Foata normal form. 4/13146 useless extension candidates. Maximal degree in co-relation 89515. Up to 10669 conditions per place. [2024-06-27 18:21:04,365 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 261 selfloop transitions, 143 changer transitions 0/414 dead transitions. [2024-06-27 18:21:04,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 414 transitions, 5251 flow [2024-06-27 18:21:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-27 18:21:04,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387755102040817 [2024-06-27 18:21:04,366 INFO L175 Difference]: Start difference. First operand has 260 places, 341 transitions, 3755 flow. Second operand 10 states and 264 transitions. [2024-06-27 18:21:04,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 414 transitions, 5251 flow [2024-06-27 18:21:05,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 414 transitions, 4942 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:05,403 INFO L231 Difference]: Finished difference. Result has 264 places, 346 transitions, 3910 flow [2024-06-27 18:21:05,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3446, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3910, PETRI_PLACES=264, PETRI_TRANSITIONS=346} [2024-06-27 18:21:05,403 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 209 predicate places. [2024-06-27 18:21:05,403 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 346 transitions, 3910 flow [2024-06-27 18:21:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:05,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:05,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:05,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:21:05,404 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:21:05,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:05,404 INFO L85 PathProgramCache]: Analyzing trace with hash 612827175, now seen corresponding path program 4 times [2024-06-27 18:21:05,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:05,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648361059] [2024-06-27 18:21:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:05,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:06,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:06,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648361059] [2024-06-27 18:21:06,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648361059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:06,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:06,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:06,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442892091] [2024-06-27 18:21:06,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:06,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:06,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:06,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-27 18:21:06,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 346 transitions, 3910 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:06,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:06,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-27 18:21:06,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand