./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix031.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/mix031.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix031.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 18:27:39,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:27:39,864 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:27:39,867 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:27:39,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:27:39,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:27:39,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:27:39,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:27:39,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:27:39,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:27:39,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:27:39,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:27:39,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:27:39,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:27:39,885 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:27:39,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:27:39,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:27:39,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:27:39,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:27:39,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:27:39,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:27:39,892 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:27:39,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:27:39,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:27:39,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:27:39,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:27:39,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:27:39,894 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:27:39,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:27:39,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:27:39,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:27:39,895 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:27:39,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:27:39,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:27:39,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:27:39,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:27:39,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:27:39,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:27:39,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:27:39,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:27:39,897 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:27:39,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:27:39,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:27:39,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:27:40,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:27:40,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:27:40,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:27:40,138 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:27:40,138 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:27:40,140 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix031.opt.yml/witness.yml [2024-06-27 18:27:40,263 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:27:40,264 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:27:40,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-27 18:27:41,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:27:41,630 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:27:41,631 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-27 18:27:41,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba1733d0/33134507b3c244c3a763a804ed6b9961/FLAG0f5fdb943 [2024-06-27 18:27:41,654 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba1733d0/33134507b3c244c3a763a804ed6b9961 [2024-06-27 18:27:41,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:27:41,656 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:27:41,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:27:41,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:27:41,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:27:41,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:27:40" (1/2) ... [2024-06-27 18:27:41,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15eba62e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:27:41, skipping insertion in model container [2024-06-27 18:27:41,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:27:40" (1/2) ... [2024-06-27 18:27:41,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10ecce23 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:27:41, skipping insertion in model container [2024-06-27 18:27:41,663 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:27:41" (2/2) ... [2024-06-27 18:27:41,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15eba62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:41, skipping insertion in model container [2024-06-27 18:27:41,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:27:41" (2/2) ... [2024-06-27 18:27:41,664 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:27:41,737 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:27:41,738 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) [2024-06-27 18:27:41,738 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] ((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) [2024-06-27 18:27:41,739 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:27:41,739 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-27 18:27:41,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:27:41,934 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.opt.i[987,1000] [2024-06-27 18:27:42,075 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:27:42,082 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:27:42,116 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:27:42,190 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:27:42,225 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:27:42,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42 WrapperNode [2024-06-27 18:27:42,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:27:42,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:27:42,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:27:42,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:27:42,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,290 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 119 [2024-06-27 18:27:42,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:27:42,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:27:42,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:27:42,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:27:42,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,327 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 18:27:42,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:27:42,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:27:42,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:27:42,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:27:42,367 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (1/1) ... [2024-06-27 18:27:42,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:27:42,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:27:42,397 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 18:27:42,416 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 18:27:42,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:27:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:27:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:27:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:27:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:27:42,428 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:27:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:27:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:27:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:27:42,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:27:42,430 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 18:27:42,642 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:27:42,644 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:27:42,901 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:27:42,902 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:27:43,007 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:27:43,007 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:27:43,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:27:43 BoogieIcfgContainer [2024-06-27 18:27:43,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:27:43,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:27:43,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:27:43,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:27:43,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:27:40" (1/4) ... [2024-06-27 18:27:43,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d3ee9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:27:43, skipping insertion in model container [2024-06-27 18:27:43,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:27:41" (2/4) ... [2024-06-27 18:27:43,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d3ee9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:27:43, skipping insertion in model container [2024-06-27 18:27:43,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:27:42" (3/4) ... [2024-06-27 18:27:43,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d3ee9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:27:43, skipping insertion in model container [2024-06-27 18:27:43,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:27:43" (4/4) ... [2024-06-27 18:27:43,014 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.opt.i [2024-06-27 18:27:43,027 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:27:43,027 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:27:43,027 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:27:43,055 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:27:43,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 86 flow [2024-06-27 18:27:43,110 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-06-27 18:27:43,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:27:43,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 60 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-06-27 18:27:43,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 86 flow [2024-06-27 18:27:43,115 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 37 transitions, 80 flow [2024-06-27 18:27:43,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:27:43,127 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;@4c5a0d01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:27:43,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:27:43,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:27:43,130 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:27:43,130 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:27:43,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:43,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:27:43,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:43,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash 315449771, now seen corresponding path program 1 times [2024-06-27 18:27:43,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:43,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520463780] [2024-06-27 18:27:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:43,920 INFO 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 18:27:43,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520463780] [2024-06-27 18:27:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520463780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:43,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:43,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:27:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122305249] [2024-06-27 18:27:43,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:43,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:27:43,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:43,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:27:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:27:43,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-27 18:27:43,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:43,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:43,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-27 18:27:43,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:44,153 INFO L124 PetriNetUnfolderBase]: 472/876 cut-off events. [2024-06-27 18:27:44,154 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:27:44,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1683 conditions, 876 events. 472/876 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4785 event pairs, 210 based on Foata normal form. 43/855 useless extension candidates. Maximal degree in co-relation 1672. Up to 780 conditions per place. [2024-06-27 18:27:44,160 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 30 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-06-27 18:27:44,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 171 flow [2024-06-27 18:27:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:27:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:27:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-27 18:27:44,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7094017094017094 [2024-06-27 18:27:44,171 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 80 flow. Second operand 3 states and 83 transitions. [2024-06-27 18:27:44,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 171 flow [2024-06-27 18:27:44,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:44,175 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 104 flow [2024-06-27 18:27:44,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:27:44,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-27 18:27:44,179 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 104 flow [2024-06-27 18:27:44,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:44,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:44,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:44,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:27:44,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:44,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:44,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1795416246, now seen corresponding path program 1 times [2024-06-27 18:27:44,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:44,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753898802] [2024-06-27 18:27:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:44,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:44,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:44,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753898802] [2024-06-27 18:27:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753898802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:44,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:44,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:27:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774201800] [2024-06-27 18:27:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:44,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:27:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:27:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:27:44,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-06-27 18:27:44,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:44,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:44,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-06-27 18:27:44,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:44,799 INFO L124 PetriNetUnfolderBase]: 539/953 cut-off events. [2024-06-27 18:27:44,799 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-06-27 18:27:44,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 953 events. 539/953 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5092 event pairs, 191 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 2065. Up to 870 conditions per place. [2024-06-27 18:27:44,807 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 39 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-27 18:27:44,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 242 flow [2024-06-27 18:27:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:27:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:27:44,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-27 18:27:44,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:27:44,810 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 104 flow. Second operand 4 states and 104 transitions. [2024-06-27 18:27:44,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 242 flow [2024-06-27 18:27:44,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:27:44,814 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 138 flow [2024-06-27 18:27:44,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-27 18:27:44,815 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-27 18:27:44,815 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 138 flow [2024-06-27 18:27:44,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:44,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:44,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:44,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:27:44,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:44,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:44,821 INFO L85 PathProgramCache]: Analyzing trace with hash 176672278, now seen corresponding path program 1 times [2024-06-27 18:27:44,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:44,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173290093] [2024-06-27 18:27:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:44,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:45,237 INFO 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 18:27:45,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:45,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173290093] [2024-06-27 18:27:45,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173290093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:45,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:45,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:27:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145308734] [2024-06-27 18:27:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:45,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:27:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:27:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:27:45,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 18:27:45,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:45,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:45,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 18:27:45,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:45,464 INFO L124 PetriNetUnfolderBase]: 636/1129 cut-off events. [2024-06-27 18:27:45,465 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2024-06-27 18:27:45,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 1129 events. 636/1129 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6116 event pairs, 216 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 2633. Up to 1008 conditions per place. [2024-06-27 18:27:45,472 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 48 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2024-06-27 18:27:45,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 322 flow [2024-06-27 18:27:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:27:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:27:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 18:27:45,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-06-27 18:27:45,477 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 138 flow. Second operand 5 states and 125 transitions. [2024-06-27 18:27:45,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 322 flow [2024-06-27 18:27:45,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 308 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:45,480 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 172 flow [2024-06-27 18:27:45,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-06-27 18:27:45,482 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-27 18:27:45,482 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 172 flow [2024-06-27 18:27:45,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:45,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:45,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:45,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:27:45,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:45,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash 176033431, now seen corresponding path program 1 times [2024-06-27 18:27:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571722461] [2024-06-27 18:27:45,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:45,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:45,567 INFO 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 18:27:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571722461] [2024-06-27 18:27:45,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571722461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:45,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:45,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:27:45,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504338821] [2024-06-27 18:27:45,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:45,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:27:45,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:45,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:27:45,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:27:45,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 39 [2024-06-27 18:27:45,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:45,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:45,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 39 [2024-06-27 18:27:45,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:45,636 INFO L124 PetriNetUnfolderBase]: 172/510 cut-off events. [2024-06-27 18:27:45,636 INFO L125 PetriNetUnfolderBase]: For 239/266 co-relation queries the response was YES. [2024-06-27 18:27:45,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 510 events. 172/510 cut-off events. For 239/266 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3241 event pairs, 19 based on Foata normal form. 3/503 useless extension candidates. Maximal degree in co-relation 979. Up to 250 conditions per place. [2024-06-27 18:27:45,639 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 19 selfloop transitions, 5 changer transitions 1/48 dead transitions. [2024-06-27 18:27:45,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 207 flow [2024-06-27 18:27:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:27:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:27:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-06-27 18:27:45,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7606837606837606 [2024-06-27 18:27:45,640 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 172 flow. Second operand 3 states and 89 transitions. [2024-06-27 18:27:45,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 207 flow [2024-06-27 18:27:45,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 192 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:45,642 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 138 flow [2024-06-27 18:27:45,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-27 18:27:45,643 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-06-27 18:27:45,643 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 138 flow [2024-06-27 18:27:45,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:45,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:45,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:45,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:27:45,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:45,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1640894509, now seen corresponding path program 1 times [2024-06-27 18:27:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583716396] [2024-06-27 18:27:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:46,110 INFO 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 18:27:46,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583716396] [2024-06-27 18:27:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583716396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:46,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:46,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:27:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140288944] [2024-06-27 18:27:46,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:46,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:27:46,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:46,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:27:46,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:27:46,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 18:27:46,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:46,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:46,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 18:27:46,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:46,357 INFO L124 PetriNetUnfolderBase]: 549/990 cut-off events. [2024-06-27 18:27:46,358 INFO L125 PetriNetUnfolderBase]: For 668/668 co-relation queries the response was YES. [2024-06-27 18:27:46,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 990 events. 549/990 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5203 event pairs, 101 based on Foata normal form. 4/981 useless extension candidates. Maximal degree in co-relation 2359. Up to 834 conditions per place. [2024-06-27 18:27:46,362 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 51 selfloop transitions, 9 changer transitions 5/76 dead transitions. [2024-06-27 18:27:46,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 354 flow [2024-06-27 18:27:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:46,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-27 18:27:46,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6196581196581197 [2024-06-27 18:27:46,369 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 138 flow. Second operand 6 states and 145 transitions. [2024-06-27 18:27:46,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 354 flow [2024-06-27 18:27:46,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:46,371 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 165 flow [2024-06-27 18:27:46,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-06-27 18:27:46,385 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-27 18:27:46,385 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 165 flow [2024-06-27 18:27:46,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:46,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:46,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:46,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:27:46,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:46,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1663875484, now seen corresponding path program 1 times [2024-06-27 18:27:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:46,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811932311] [2024-06-27 18:27:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:46,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:47,112 INFO 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 18:27:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:47,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811932311] [2024-06-27 18:27:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811932311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:47,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:47,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:27:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846309579] [2024-06-27 18:27:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:47,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:27:47,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:27:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:27:47,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 18:27:47,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:47,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:47,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 18:27:47,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:47,373 INFO L124 PetriNetUnfolderBase]: 430/905 cut-off events. [2024-06-27 18:27:47,373 INFO L125 PetriNetUnfolderBase]: For 737/739 co-relation queries the response was YES. [2024-06-27 18:27:47,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 905 events. 430/905 cut-off events. For 737/739 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5169 event pairs, 176 based on Foata normal form. 3/876 useless extension candidates. Maximal degree in co-relation 2143. Up to 712 conditions per place. [2024-06-27 18:27:47,378 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 39 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-27 18:27:47,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 303 flow [2024-06-27 18:27:47,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:27:47,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:27:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-27 18:27:47,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-06-27 18:27:47,379 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 165 flow. Second operand 5 states and 105 transitions. [2024-06-27 18:27:47,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 303 flow [2024-06-27 18:27:47,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 278 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:47,381 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 195 flow [2024-06-27 18:27:47,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 18:27:47,382 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-27 18:27:47,382 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 195 flow [2024-06-27 18:27:47,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:47,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:47,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:47,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:27:47,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:47,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash 56620297, now seen corresponding path program 1 times [2024-06-27 18:27:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:47,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691138473] [2024-06-27 18:27:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:48,228 INFO 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 18:27:48,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:48,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691138473] [2024-06-27 18:27:48,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691138473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:48,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:48,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:48,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134988573] [2024-06-27 18:27:48,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:48,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:48,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:48,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:48,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 18:27:48,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:48,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:48,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 18:27:48,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:48,518 INFO L124 PetriNetUnfolderBase]: 507/1018 cut-off events. [2024-06-27 18:27:48,519 INFO L125 PetriNetUnfolderBase]: For 1008/1010 co-relation queries the response was YES. [2024-06-27 18:27:48,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2579 conditions, 1018 events. 507/1018 cut-off events. For 1008/1010 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5736 event pairs, 209 based on Foata normal form. 3/995 useless extension candidates. Maximal degree in co-relation 2559. Up to 829 conditions per place. [2024-06-27 18:27:48,524 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 45 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2024-06-27 18:27:48,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 349 flow [2024-06-27 18:27:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-27 18:27:48,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 18:27:48,526 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 195 flow. Second operand 6 states and 120 transitions. [2024-06-27 18:27:48,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 349 flow [2024-06-27 18:27:48,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 340 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:48,529 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 221 flow [2024-06-27 18:27:48,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-27 18:27:48,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-27 18:27:48,531 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 221 flow [2024-06-27 18:27:48,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:48,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:48,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:27:48,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:48,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1248869371, now seen corresponding path program 1 times [2024-06-27 18:27:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:48,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151716252] [2024-06-27 18:27:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:48,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:49,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:49,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151716252] [2024-06-27 18:27:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151716252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:49,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:49,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:49,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975389063] [2024-06-27 18:27:49,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:49,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:49,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:49,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 18:27:49,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 221 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:49,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:49,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 18:27:49,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:49,557 INFO L124 PetriNetUnfolderBase]: 548/1082 cut-off events. [2024-06-27 18:27:49,557 INFO L125 PetriNetUnfolderBase]: For 1599/1601 co-relation queries the response was YES. [2024-06-27 18:27:49,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2917 conditions, 1082 events. 548/1082 cut-off events. For 1599/1601 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6098 event pairs, 218 based on Foata normal form. 3/1058 useless extension candidates. Maximal degree in co-relation 2895. Up to 879 conditions per place. [2024-06-27 18:27:49,561 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 49 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-27 18:27:49,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 401 flow [2024-06-27 18:27:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:49,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-27 18:27:49,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2024-06-27 18:27:49,563 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 221 flow. Second operand 6 states and 122 transitions. [2024-06-27 18:27:49,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 401 flow [2024-06-27 18:27:49,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 382 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:49,566 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 263 flow [2024-06-27 18:27:49,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-27 18:27:49,567 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2024-06-27 18:27:49,567 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 263 flow [2024-06-27 18:27:49,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:49,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:49,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:49,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:27:49,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:49,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:49,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1755219031, now seen corresponding path program 2 times [2024-06-27 18:27:49,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:49,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721037695] [2024-06-27 18:27:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:49,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:50,171 INFO 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 18:27:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721037695] [2024-06-27 18:27:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721037695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:50,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:50,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:50,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17199003] [2024-06-27 18:27:50,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:50,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:50,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:50,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:50,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 18:27:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 263 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:50,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:50,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 18:27:50,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:50,472 INFO L124 PetriNetUnfolderBase]: 542/1087 cut-off events. [2024-06-27 18:27:50,473 INFO L125 PetriNetUnfolderBase]: For 2156/2164 co-relation queries the response was YES. [2024-06-27 18:27:50,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 1087 events. 542/1087 cut-off events. For 2156/2164 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6180 event pairs, 211 based on Foata normal form. 9/1064 useless extension candidates. Maximal degree in co-relation 3092. Up to 850 conditions per place. [2024-06-27 18:27:50,479 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 47 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2024-06-27 18:27:50,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 437 flow [2024-06-27 18:27:50,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-27 18:27:50,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2024-06-27 18:27:50,480 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 263 flow. Second operand 6 states and 122 transitions. [2024-06-27 18:27:50,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 437 flow [2024-06-27 18:27:50,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 418 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:50,483 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 291 flow [2024-06-27 18:27:50,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-06-27 18:27:50,484 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-27 18:27:50,484 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 291 flow [2024-06-27 18:27:50,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:50,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:50,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:50,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:27:50,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:50,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash -234613582, now seen corresponding path program 1 times [2024-06-27 18:27:50,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:50,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2330996] [2024-06-27 18:27:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:50,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:51,368 INFO 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 18:27:51,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:51,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2330996] [2024-06-27 18:27:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2330996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:51,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:51,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:51,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359386221] [2024-06-27 18:27:51,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:51,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:51,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:51,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:51,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-06-27 18:27:51,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:51,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:51,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-06-27 18:27:51,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:51,772 INFO L124 PetriNetUnfolderBase]: 509/1014 cut-off events. [2024-06-27 18:27:51,772 INFO L125 PetriNetUnfolderBase]: For 2562/2562 co-relation queries the response was YES. [2024-06-27 18:27:51,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 1014 events. 509/1014 cut-off events. For 2562/2562 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5664 event pairs, 153 based on Foata normal form. 4/984 useless extension candidates. Maximal degree in co-relation 3013. Up to 741 conditions per place. [2024-06-27 18:27:51,778 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 67 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-27 18:27:51,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 95 transitions, 555 flow [2024-06-27 18:27:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:27:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:27:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:27:51,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2024-06-27 18:27:51,780 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 291 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:27:51,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 95 transitions, 555 flow [2024-06-27 18:27:51,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 524 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:51,786 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 297 flow [2024-06-27 18:27:51,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=297, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-06-27 18:27:51,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-27 18:27:51,788 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 297 flow [2024-06-27 18:27:51,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:51,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:51,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:51,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:27:51,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:51,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:51,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1755229943, now seen corresponding path program 1 times [2024-06-27 18:27:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:51,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193680390] [2024-06-27 18:27:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:51,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:52,415 INFO 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 18:27:52,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:52,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193680390] [2024-06-27 18:27:52,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193680390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:52,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:52,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380514335] [2024-06-27 18:27:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:52,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:52,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:52,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-27 18:27:52,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:52,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:52,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-27 18:27:52,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:52,727 INFO L124 PetriNetUnfolderBase]: 518/1048 cut-off events. [2024-06-27 18:27:52,727 INFO L125 PetriNetUnfolderBase]: For 2597/2599 co-relation queries the response was YES. [2024-06-27 18:27:52,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 1048 events. 518/1048 cut-off events. For 2597/2599 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5941 event pairs, 155 based on Foata normal form. 3/1020 useless extension candidates. Maximal degree in co-relation 3179. Up to 831 conditions per place. [2024-06-27 18:27:52,733 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 58 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-06-27 18:27:52,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 501 flow [2024-06-27 18:27:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 18:27:52,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-06-27 18:27:52,734 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 297 flow. Second operand 7 states and 138 transitions. [2024-06-27 18:27:52,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 501 flow [2024-06-27 18:27:52,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 80 transitions, 465 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:52,738 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 302 flow [2024-06-27 18:27:52,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=302, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-06-27 18:27:52,739 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-06-27 18:27:52,739 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 302 flow [2024-06-27 18:27:52,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:52,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:52,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:52,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:27:52,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:52,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash 60064843, now seen corresponding path program 1 times [2024-06-27 18:27:52,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:52,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074877212] [2024-06-27 18:27:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:52,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074877212] [2024-06-27 18:27:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074877212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:53,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:53,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209883609] [2024-06-27 18:27:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:53,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:53,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:53,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:53,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 302 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:53,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:53,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:53,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:53,813 INFO L124 PetriNetUnfolderBase]: 602/1133 cut-off events. [2024-06-27 18:27:53,813 INFO L125 PetriNetUnfolderBase]: For 3430/3432 co-relation queries the response was YES. [2024-06-27 18:27:53,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3633 conditions, 1133 events. 602/1133 cut-off events. For 3430/3432 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6157 event pairs, 172 based on Foata normal form. 3/1111 useless extension candidates. Maximal degree in co-relation 3605. Up to 942 conditions per place. [2024-06-27 18:27:53,820 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 64 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-06-27 18:27:53,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 87 transitions, 541 flow [2024-06-27 18:27:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:53,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 18:27:53,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-27 18:27:53,822 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 302 flow. Second operand 7 states and 136 transitions. [2024-06-27 18:27:53,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 87 transitions, 541 flow [2024-06-27 18:27:53,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 516 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:53,826 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 351 flow [2024-06-27 18:27:53,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-06-27 18:27:53,828 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2024-06-27 18:27:53,828 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 351 flow [2024-06-27 18:27:53,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:53,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:53,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:27:53,830 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:53,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash 60245263, now seen corresponding path program 2 times [2024-06-27 18:27:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505722832] [2024-06-27 18:27:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:54,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:54,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505722832] [2024-06-27 18:27:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505722832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:54,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188029696] [2024-06-27 18:27:54,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:54,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:54,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:54,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:54,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:54,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:54,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:54,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:54,747 INFO L124 PetriNetUnfolderBase]: 613/1150 cut-off events. [2024-06-27 18:27:54,747 INFO L125 PetriNetUnfolderBase]: For 4133/4135 co-relation queries the response was YES. [2024-06-27 18:27:54,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 1150 events. 613/1150 cut-off events. For 4133/4135 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6234 event pairs, 170 based on Foata normal form. 3/1128 useless extension candidates. Maximal degree in co-relation 3846. Up to 939 conditions per place. [2024-06-27 18:27:54,753 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 62 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-27 18:27:54,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 583 flow [2024-06-27 18:27:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:54,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 18:27:54,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-27 18:27:54,754 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 351 flow. Second operand 7 states and 136 transitions. [2024-06-27 18:27:54,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 583 flow [2024-06-27 18:27:54,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 88 transitions, 552 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:54,759 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 377 flow [2024-06-27 18:27:54,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-06-27 18:27:54,760 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-27 18:27:54,760 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 377 flow [2024-06-27 18:27:54,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:54,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:54,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:54,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:27:54,760 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:54,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash 60245542, now seen corresponding path program 1 times [2024-06-27 18:27:54,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:54,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555743716] [2024-06-27 18:27:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:55,370 INFO 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 18:27:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:55,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555743716] [2024-06-27 18:27:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555743716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:55,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:55,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:55,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292958871] [2024-06-27 18:27:55,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:55,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:55,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:55,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:55,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:55,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:55,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:55,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:55,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:55,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:55,715 INFO L124 PetriNetUnfolderBase]: 632/1198 cut-off events. [2024-06-27 18:27:55,715 INFO L125 PetriNetUnfolderBase]: For 4757/4757 co-relation queries the response was YES. [2024-06-27 18:27:55,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 1198 events. 632/1198 cut-off events. For 4757/4757 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6661 event pairs, 187 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 4043. Up to 998 conditions per place. [2024-06-27 18:27:55,724 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 65 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-27 18:27:55,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 603 flow [2024-06-27 18:27:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 18:27:55,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2024-06-27 18:27:55,726 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 377 flow. Second operand 7 states and 134 transitions. [2024-06-27 18:27:55,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 603 flow [2024-06-27 18:27:55,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 562 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:55,734 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 381 flow [2024-06-27 18:27:55,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-06-27 18:27:55,734 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-27 18:27:55,734 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 381 flow [2024-06-27 18:27:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:55,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:55,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:55,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:27:55,735 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:55,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1422784182, now seen corresponding path program 2 times [2024-06-27 18:27:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398279549] [2024-06-27 18:27:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:56,359 INFO 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 18:27:56,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:56,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398279549] [2024-06-27 18:27:56,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398279549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:56,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:56,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304682995] [2024-06-27 18:27:56,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:56,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:56,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:56,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:56,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:56,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 381 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:56,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:56,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:56,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:56,634 INFO L124 PetriNetUnfolderBase]: 647/1309 cut-off events. [2024-06-27 18:27:56,635 INFO L125 PetriNetUnfolderBase]: For 5556/5562 co-relation queries the response was YES. [2024-06-27 18:27:56,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4365 conditions, 1309 events. 647/1309 cut-off events. For 5556/5562 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7532 event pairs, 183 based on Foata normal form. 7/1262 useless extension candidates. Maximal degree in co-relation 4333. Up to 966 conditions per place. [2024-06-27 18:27:56,641 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 62 selfloop transitions, 19 changer transitions 0/94 dead transitions. [2024-06-27 18:27:56,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 94 transitions, 665 flow [2024-06-27 18:27:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 18:27:56,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018315018315018 [2024-06-27 18:27:56,643 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 381 flow. Second operand 7 states and 137 transitions. [2024-06-27 18:27:56,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 94 transitions, 665 flow [2024-06-27 18:27:56,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 94 transitions, 636 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:56,648 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 431 flow [2024-06-27 18:27:56,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-06-27 18:27:56,648 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-27 18:27:56,649 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 431 flow [2024-06-27 18:27:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:56,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:56,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:56,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:27:56,649 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:56,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1422784461, now seen corresponding path program 3 times [2024-06-27 18:27:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:56,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230866239] [2024-06-27 18:27:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:57,237 INFO 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 18:27:57,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230866239] [2024-06-27 18:27:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230866239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:57,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:57,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:57,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022421117] [2024-06-27 18:27:57,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:57,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:57,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:57,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:57,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:57,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 431 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:57,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:57,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:57,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:57,560 INFO L124 PetriNetUnfolderBase]: 636/1245 cut-off events. [2024-06-27 18:27:57,560 INFO L125 PetriNetUnfolderBase]: For 6527/6534 co-relation queries the response was YES. [2024-06-27 18:27:57,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 1245 events. 636/1245 cut-off events. For 6527/6534 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6984 event pairs, 165 based on Foata normal form. 4/1207 useless extension candidates. Maximal degree in co-relation 4420. Up to 932 conditions per place. [2024-06-27 18:27:57,566 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 62 selfloop transitions, 20 changer transitions 0/95 dead transitions. [2024-06-27 18:27:57,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 95 transitions, 677 flow [2024-06-27 18:27:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 18:27:57,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-06-27 18:27:57,567 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 431 flow. Second operand 7 states and 136 transitions. [2024-06-27 18:27:57,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 95 transitions, 677 flow [2024-06-27 18:27:57,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 649 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:27:57,574 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 472 flow [2024-06-27 18:27:57,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-06-27 18:27:57,575 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-27 18:27:57,575 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 472 flow [2024-06-27 18:27:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:57,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:57,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:57,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:27:57,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:57,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash 297669892, now seen corresponding path program 3 times [2024-06-27 18:27:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070119731] [2024-06-27 18:27:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:57,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:58,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070119731] [2024-06-27 18:27:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070119731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:58,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:58,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:27:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944366556] [2024-06-27 18:27:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:58,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:27:58,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:27:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:27:58,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:58,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 472 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:58,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:58,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:58,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:58,453 INFO L124 PetriNetUnfolderBase]: 645/1306 cut-off events. [2024-06-27 18:27:58,453 INFO L125 PetriNetUnfolderBase]: For 6903/6909 co-relation queries the response was YES. [2024-06-27 18:27:58,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 1306 events. 645/1306 cut-off events. For 6903/6909 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7554 event pairs, 181 based on Foata normal form. 7/1259 useless extension candidates. Maximal degree in co-relation 4592. Up to 965 conditions per place. [2024-06-27 18:27:58,464 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 61 selfloop transitions, 20 changer transitions 0/95 dead transitions. [2024-06-27 18:27:58,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 696 flow [2024-06-27 18:27:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 18:27:58,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-06-27 18:27:58,465 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 472 flow. Second operand 7 states and 135 transitions. [2024-06-27 18:27:58,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 696 flow [2024-06-27 18:27:58,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 633 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:58,474 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 454 flow [2024-06-27 18:27:58,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=454, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-06-27 18:27:58,474 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-27 18:27:58,474 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 454 flow [2024-06-27 18:27:58,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:58,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:58,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:27:58,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:58,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:58,475 INFO L85 PathProgramCache]: Analyzing trace with hash -474895016, now seen corresponding path program 1 times [2024-06-27 18:27:58,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:58,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864261015] [2024-06-27 18:27:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:58,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:59,080 INFO 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 18:27:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864261015] [2024-06-27 18:27:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864261015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:59,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:27:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127224931] [2024-06-27 18:27:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:27:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:27:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:27:59,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:27:59,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 454 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:59,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:59,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:27:59,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:59,556 INFO L124 PetriNetUnfolderBase]: 705/1327 cut-off events. [2024-06-27 18:27:59,557 INFO L125 PetriNetUnfolderBase]: For 8295/8297 co-relation queries the response was YES. [2024-06-27 18:27:59,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 1327 events. 705/1327 cut-off events. For 8295/8297 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7408 event pairs, 179 based on Foata normal form. 4/1300 useless extension candidates. Maximal degree in co-relation 5003. Up to 1034 conditions per place. [2024-06-27 18:27:59,563 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 81 selfloop transitions, 30 changer transitions 0/124 dead transitions. [2024-06-27 18:27:59,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 124 transitions, 898 flow [2024-06-27 18:27:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:59,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:27:59,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2024-06-27 18:27:59,565 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 454 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:27:59,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 124 transitions, 898 flow [2024-06-27 18:27:59,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 847 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:59,574 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 659 flow [2024-06-27 18:27:59,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=659, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2024-06-27 18:27:59,574 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-27 18:27:59,574 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 659 flow [2024-06-27 18:27:59,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:59,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:59,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:59,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:27:59,575 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:59,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1862004080, now seen corresponding path program 2 times [2024-06-27 18:27:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:59,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216432364] [2024-06-27 18:27:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:59,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:00,209 INFO 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 18:28:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216432364] [2024-06-27 18:28:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216432364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:00,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:00,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:00,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167494154] [2024-06-27 18:28:00,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:00,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:00,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:00,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:00,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:00,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 659 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:00,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:00,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:00,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:00,680 INFO L124 PetriNetUnfolderBase]: 727/1367 cut-off events. [2024-06-27 18:28:00,680 INFO L125 PetriNetUnfolderBase]: For 9906/9908 co-relation queries the response was YES. [2024-06-27 18:28:00,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5562 conditions, 1367 events. 727/1367 cut-off events. For 9906/9908 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7709 event pairs, 179 based on Foata normal form. 4/1339 useless extension candidates. Maximal degree in co-relation 5522. Up to 1044 conditions per place. [2024-06-27 18:28:00,688 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 84 selfloop transitions, 32 changer transitions 0/129 dead transitions. [2024-06-27 18:28:00,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 1021 flow [2024-06-27 18:28:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:00,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 18:28:00,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 18:28:00,689 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 659 flow. Second operand 8 states and 157 transitions. [2024-06-27 18:28:00,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 129 transitions, 1021 flow [2024-06-27 18:28:00,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 129 transitions, 985 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:00,702 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 722 flow [2024-06-27 18:28:00,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=722, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2024-06-27 18:28:00,702 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-27 18:28:00,703 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 722 flow [2024-06-27 18:28:00,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:00,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:00,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:00,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:28:00,703 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:00,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1745807014, now seen corresponding path program 3 times [2024-06-27 18:28:00,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:00,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810750187] [2024-06-27 18:28:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:00,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:01,353 INFO 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 18:28:01,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810750187] [2024-06-27 18:28:01,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810750187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:01,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:01,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:01,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230064284] [2024-06-27 18:28:01,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:01,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:01,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:01,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:01,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:01,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:01,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 722 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:01,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:01,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:01,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:01,809 INFO L124 PetriNetUnfolderBase]: 749/1414 cut-off events. [2024-06-27 18:28:01,809 INFO L125 PetriNetUnfolderBase]: For 11365/11367 co-relation queries the response was YES. [2024-06-27 18:28:01,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5977 conditions, 1414 events. 749/1414 cut-off events. For 11365/11367 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8064 event pairs, 183 based on Foata normal form. 4/1384 useless extension candidates. Maximal degree in co-relation 5935. Up to 1039 conditions per place. [2024-06-27 18:28:01,816 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 83 selfloop transitions, 34 changer transitions 0/130 dead transitions. [2024-06-27 18:28:01,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 130 transitions, 1088 flow [2024-06-27 18:28:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 18:28:01,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-27 18:28:01,817 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 722 flow. Second operand 8 states and 158 transitions. [2024-06-27 18:28:01,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 130 transitions, 1088 flow [2024-06-27 18:28:01,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 130 transitions, 1010 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:01,830 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 747 flow [2024-06-27 18:28:01,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=747, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2024-06-27 18:28:01,831 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-27 18:28:01,831 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 747 flow [2024-06-27 18:28:01,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:01,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:01,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:01,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:28:01,831 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:01,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1745806766, now seen corresponding path program 1 times [2024-06-27 18:28:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:01,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820184537] [2024-06-27 18:28:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:01,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:02,466 INFO 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 18:28:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:02,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820184537] [2024-06-27 18:28:02,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820184537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:02,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:02,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329676219] [2024-06-27 18:28:02,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:02,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:02,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:02,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:02,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:02,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:02,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 747 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:02,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:02,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:02,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:02,907 INFO L124 PetriNetUnfolderBase]: 813/1499 cut-off events. [2024-06-27 18:28:02,907 INFO L125 PetriNetUnfolderBase]: For 11095/11095 co-relation queries the response was YES. [2024-06-27 18:28:02,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 1499 events. 813/1499 cut-off events. For 11095/11095 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8423 event pairs, 197 based on Foata normal form. 1/1462 useless extension candidates. Maximal degree in co-relation 6241. Up to 1246 conditions per place. [2024-06-27 18:28:02,916 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 101 selfloop transitions, 23 changer transitions 0/132 dead transitions. [2024-06-27 18:28:02,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1123 flow [2024-06-27 18:28:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:28:02,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-27 18:28:02,919 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 747 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:28:02,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1123 flow [2024-06-27 18:28:02,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 132 transitions, 1040 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:02,934 INFO L231 Difference]: Finished difference. Result has 102 places, 102 transitions, 737 flow [2024-06-27 18:28:02,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=737, PETRI_PLACES=102, PETRI_TRANSITIONS=102} [2024-06-27 18:28:02,935 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-27 18:28:02,935 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 102 transitions, 737 flow [2024-06-27 18:28:02,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:02,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:02,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:02,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:28:02,935 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:02,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:02,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1867612228, now seen corresponding path program 2 times [2024-06-27 18:28:02,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:02,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705905367] [2024-06-27 18:28:02,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:02,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:03,567 INFO 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 18:28:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:03,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705905367] [2024-06-27 18:28:03,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705905367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:03,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:03,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:03,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857756738] [2024-06-27 18:28:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:03,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:03,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:03,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:03,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:03,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:03,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 102 transitions, 737 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:03,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:03,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:03,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:03,951 INFO L124 PetriNetUnfolderBase]: 837/1532 cut-off events. [2024-06-27 18:28:03,951 INFO L125 PetriNetUnfolderBase]: For 11935/11935 co-relation queries the response was YES. [2024-06-27 18:28:03,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 1532 events. 837/1532 cut-off events. For 11935/11935 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8600 event pairs, 196 based on Foata normal form. 1/1495 useless extension candidates. Maximal degree in co-relation 6447. Up to 1225 conditions per place. [2024-06-27 18:28:03,960 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 97 selfloop transitions, 30 changer transitions 0/135 dead transitions. [2024-06-27 18:28:03,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 135 transitions, 1179 flow [2024-06-27 18:28:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:28:03,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 18:28:03,961 INFO L175 Difference]: Start difference. First operand has 102 places, 102 transitions, 737 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:28:03,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 135 transitions, 1179 flow [2024-06-27 18:28:03,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 135 transitions, 1122 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:03,974 INFO L231 Difference]: Finished difference. Result has 104 places, 106 transitions, 793 flow [2024-06-27 18:28:03,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=104, PETRI_TRANSITIONS=106} [2024-06-27 18:28:03,974 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-06-27 18:28:03,974 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 106 transitions, 793 flow [2024-06-27 18:28:03,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:03,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:03,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:03,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:28:03,975 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:03,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:03,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1867612538, now seen corresponding path program 1 times [2024-06-27 18:28:03,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:03,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511359418] [2024-06-27 18:28:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:04,601 INFO 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 18:28:04,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:04,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511359418] [2024-06-27 18:28:04,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511359418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:04,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:04,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:04,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389047862] [2024-06-27 18:28:04,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:04,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:04,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:04,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:04,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:04,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:04,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 106 transitions, 793 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:04,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:04,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:04,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:04,986 INFO L124 PetriNetUnfolderBase]: 789/1487 cut-off events. [2024-06-27 18:28:04,987 INFO L125 PetriNetUnfolderBase]: For 12783/12795 co-relation queries the response was YES. [2024-06-27 18:28:04,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6273 conditions, 1487 events. 789/1487 cut-off events. For 12783/12795 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8619 event pairs, 195 based on Foata normal form. 13/1462 useless extension candidates. Maximal degree in co-relation 6228. Up to 1200 conditions per place. [2024-06-27 18:28:04,994 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 101 selfloop transitions, 17 changer transitions 0/136 dead transitions. [2024-06-27 18:28:04,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 136 transitions, 1147 flow [2024-06-27 18:28:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 18:28:04,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:28:04,995 INFO L175 Difference]: Start difference. First operand has 104 places, 106 transitions, 793 flow. Second operand 8 states and 152 transitions. [2024-06-27 18:28:04,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 136 transitions, 1147 flow [2024-06-27 18:28:05,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 136 transitions, 1100 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:05,008 INFO L231 Difference]: Finished difference. Result has 108 places, 108 transitions, 803 flow [2024-06-27 18:28:05,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=803, PETRI_PLACES=108, PETRI_TRANSITIONS=108} [2024-06-27 18:28:05,009 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-06-27 18:28:05,009 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 108 transitions, 803 flow [2024-06-27 18:28:05,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:05,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:05,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:05,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:28:05,010 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:05,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:05,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1867603610, now seen corresponding path program 4 times [2024-06-27 18:28:05,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:05,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608462924] [2024-06-27 18:28:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:05,633 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 18:28:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608462924] [2024-06-27 18:28:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608462924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:05,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:05,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:05,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019469021] [2024-06-27 18:28:05,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:05,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:05,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:05,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:05,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 108 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:05,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:05,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:05,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:06,062 INFO L124 PetriNetUnfolderBase]: 815/1526 cut-off events. [2024-06-27 18:28:06,063 INFO L125 PetriNetUnfolderBase]: For 14888/14896 co-relation queries the response was YES. [2024-06-27 18:28:06,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6776 conditions, 1526 events. 815/1526 cut-off events. For 14888/14896 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8777 event pairs, 188 based on Foata normal form. 10/1500 useless extension candidates. Maximal degree in co-relation 6729. Up to 1079 conditions per place. [2024-06-27 18:28:06,072 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 85 selfloop transitions, 37 changer transitions 0/138 dead transitions. [2024-06-27 18:28:06,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 138 transitions, 1173 flow [2024-06-27 18:28:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 18:28:06,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-27 18:28:06,075 INFO L175 Difference]: Start difference. First operand has 108 places, 108 transitions, 803 flow. Second operand 8 states and 158 transitions. [2024-06-27 18:28:06,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 138 transitions, 1173 flow [2024-06-27 18:28:06,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 138 transitions, 1132 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:06,095 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 871 flow [2024-06-27 18:28:06,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=871, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2024-06-27 18:28:06,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-27 18:28:06,096 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 871 flow [2024-06-27 18:28:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:06,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:06,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:06,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:28:06,096 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:06,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1740213746, now seen corresponding path program 3 times [2024-06-27 18:28:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:06,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645788767] [2024-06-27 18:28:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:06,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:06,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:06,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645788767] [2024-06-27 18:28:06,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645788767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:06,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:06,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:06,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136283217] [2024-06-27 18:28:06,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:06,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:06,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:06,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:06,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 871 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:06,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:06,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:06,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:07,208 INFO L124 PetriNetUnfolderBase]: 868/1602 cut-off events. [2024-06-27 18:28:07,208 INFO L125 PetriNetUnfolderBase]: For 15642/15642 co-relation queries the response was YES. [2024-06-27 18:28:07,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 1602 events. 868/1602 cut-off events. For 15642/15642 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9147 event pairs, 200 based on Foata normal form. 1/1560 useless extension candidates. Maximal degree in co-relation 7197. Up to 1274 conditions per place. [2024-06-27 18:28:07,217 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 101 selfloop transitions, 29 changer transitions 0/138 dead transitions. [2024-06-27 18:28:07,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 1235 flow [2024-06-27 18:28:07,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:28:07,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 18:28:07,218 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 871 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:28:07,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 1235 flow [2024-06-27 18:28:07,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 1132 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:07,237 INFO L231 Difference]: Finished difference. Result has 112 places, 110 transitions, 831 flow [2024-06-27 18:28:07,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=831, PETRI_PLACES=112, PETRI_TRANSITIONS=110} [2024-06-27 18:28:07,238 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 69 predicate places. [2024-06-27 18:28:07,238 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 110 transitions, 831 flow [2024-06-27 18:28:07,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:07,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:07,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:07,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:28:07,238 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:07,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:07,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1156636256, now seen corresponding path program 4 times [2024-06-27 18:28:07,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:07,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145471834] [2024-06-27 18:28:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:07,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:07,873 INFO 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 18:28:07,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:07,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145471834] [2024-06-27 18:28:07,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145471834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:07,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:07,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:07,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850440143] [2024-06-27 18:28:07,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:07,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:07,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:07,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:07,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:07,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:07,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 831 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:07,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:07,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:07,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:08,243 INFO L124 PetriNetUnfolderBase]: 895/1709 cut-off events. [2024-06-27 18:28:08,253 INFO L125 PetriNetUnfolderBase]: For 16688/16694 co-relation queries the response was YES. [2024-06-27 18:28:08,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7464 conditions, 1709 events. 895/1709 cut-off events. For 16688/16694 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9915 event pairs, 190 based on Foata normal form. 3/1651 useless extension candidates. Maximal degree in co-relation 7415. Up to 1217 conditions per place. [2024-06-27 18:28:08,265 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 98 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2024-06-27 18:28:08,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 146 transitions, 1391 flow [2024-06-27 18:28:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:08,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:08,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 18:28:08,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-27 18:28:08,267 INFO L175 Difference]: Start difference. First operand has 112 places, 110 transitions, 831 flow. Second operand 8 states and 153 transitions. [2024-06-27 18:28:08,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 146 transitions, 1391 flow [2024-06-27 18:28:08,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 146 transitions, 1319 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:08,284 INFO L231 Difference]: Finished difference. Result has 113 places, 116 transitions, 926 flow [2024-06-27 18:28:08,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=926, PETRI_PLACES=113, PETRI_TRANSITIONS=116} [2024-06-27 18:28:08,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-06-27 18:28:08,285 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 116 transitions, 926 flow [2024-06-27 18:28:08,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:08,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:08,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:08,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:28:08,285 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:08,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1156635946, now seen corresponding path program 2 times [2024-06-27 18:28:08,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:08,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325411560] [2024-06-27 18:28:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:08,944 INFO 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 18:28:08,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325411560] [2024-06-27 18:28:08,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325411560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:08,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:08,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:08,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621401706] [2024-06-27 18:28:08,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:08,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:08,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:08,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:09,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:09,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 116 transitions, 926 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:09,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:09,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:09,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:09,337 INFO L124 PetriNetUnfolderBase]: 845/1678 cut-off events. [2024-06-27 18:28:09,337 INFO L125 PetriNetUnfolderBase]: For 17642/17661 co-relation queries the response was YES. [2024-06-27 18:28:09,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7234 conditions, 1678 events. 845/1678 cut-off events. For 17642/17661 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10108 event pairs, 188 based on Foata normal form. 20/1633 useless extension candidates. Maximal degree in co-relation 7184. Up to 1179 conditions per place. [2024-06-27 18:28:09,346 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 103 selfloop transitions, 27 changer transitions 0/151 dead transitions. [2024-06-27 18:28:09,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 151 transitions, 1390 flow [2024-06-27 18:28:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 18:28:09,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2024-06-27 18:28:09,347 INFO L175 Difference]: Start difference. First operand has 113 places, 116 transitions, 926 flow. Second operand 8 states and 157 transitions. [2024-06-27 18:28:09,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 151 transitions, 1390 flow [2024-06-27 18:28:09,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 1302 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 18:28:09,366 INFO L231 Difference]: Finished difference. Result has 118 places, 122 transitions, 958 flow [2024-06-27 18:28:09,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=958, PETRI_PLACES=118, PETRI_TRANSITIONS=122} [2024-06-27 18:28:09,367 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-27 18:28:09,367 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 122 transitions, 958 flow [2024-06-27 18:28:09,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:09,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:09,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:09,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:28:09,368 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:09,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:09,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1036608638, now seen corresponding path program 5 times [2024-06-27 18:28:09,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:09,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887633273] [2024-06-27 18:28:09,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:09,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:10,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:10,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887633273] [2024-06-27 18:28:10,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887633273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:10,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:10,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:10,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464616345] [2024-06-27 18:28:10,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:10,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:10,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:10,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:10,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:10,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:10,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 122 transitions, 958 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:10,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:10,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:10,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:10,420 INFO L124 PetriNetUnfolderBase]: 856/1648 cut-off events. [2024-06-27 18:28:10,420 INFO L125 PetriNetUnfolderBase]: For 19427/19435 co-relation queries the response was YES. [2024-06-27 18:28:10,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7515 conditions, 1648 events. 856/1648 cut-off events. For 19427/19435 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9715 event pairs, 180 based on Foata normal form. 6/1601 useless extension candidates. Maximal degree in co-relation 7463. Up to 1079 conditions per place. [2024-06-27 18:28:10,432 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 91 selfloop transitions, 42 changer transitions 0/152 dead transitions. [2024-06-27 18:28:10,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 152 transitions, 1360 flow [2024-06-27 18:28:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:10,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 18:28:10,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-27 18:28:10,433 INFO L175 Difference]: Start difference. First operand has 118 places, 122 transitions, 958 flow. Second operand 8 states and 158 transitions. [2024-06-27 18:28:10,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 152 transitions, 1360 flow [2024-06-27 18:28:10,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 152 transitions, 1332 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:10,461 INFO L231 Difference]: Finished difference. Result has 123 places, 124 transitions, 1053 flow [2024-06-27 18:28:10,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1053, PETRI_PLACES=123, PETRI_TRANSITIONS=124} [2024-06-27 18:28:10,466 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-27 18:28:10,466 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 124 transitions, 1053 flow [2024-06-27 18:28:10,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:10,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:10,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:10,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:28:10,467 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:10,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1156644626, now seen corresponding path program 5 times [2024-06-27 18:28:10,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:10,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725380] [2024-06-27 18:28:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:10,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:11,195 INFO 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 18:28:11,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:11,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725380] [2024-06-27 18:28:11,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:11,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:11,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:11,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655831205] [2024-06-27 18:28:11,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:11,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:11,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:11,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:11,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 124 transitions, 1053 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:11,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:11,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:11,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:11,536 INFO L124 PetriNetUnfolderBase]: 919/1761 cut-off events. [2024-06-27 18:28:11,536 INFO L125 PetriNetUnfolderBase]: For 20300/20306 co-relation queries the response was YES. [2024-06-27 18:28:11,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8149 conditions, 1761 events. 919/1761 cut-off events. For 20300/20306 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10374 event pairs, 191 based on Foata normal form. 3/1700 useless extension candidates. Maximal degree in co-relation 8095. Up to 1256 conditions per place. [2024-06-27 18:28:11,545 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 104 selfloop transitions, 41 changer transitions 0/153 dead transitions. [2024-06-27 18:28:11,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 153 transitions, 1507 flow [2024-06-27 18:28:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:11,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:28:11,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-27 18:28:11,546 INFO L175 Difference]: Start difference. First operand has 123 places, 124 transitions, 1053 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:28:11,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 153 transitions, 1507 flow [2024-06-27 18:28:11,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 153 transitions, 1384 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:11,570 INFO L231 Difference]: Finished difference. Result has 125 places, 124 transitions, 1017 flow [2024-06-27 18:28:11,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1017, PETRI_PLACES=125, PETRI_TRANSITIONS=124} [2024-06-27 18:28:11,571 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 82 predicate places. [2024-06-27 18:28:11,571 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 124 transitions, 1017 flow [2024-06-27 18:28:11,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:11,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:11,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:11,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:28:11,572 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:11,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1146516926, now seen corresponding path program 6 times [2024-06-27 18:28:11,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:11,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800401621] [2024-06-27 18:28:11,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:11,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:12,202 INFO 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 18:28:12,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:12,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800401621] [2024-06-27 18:28:12,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800401621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:12,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:12,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:12,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096795824] [2024-06-27 18:28:12,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:12,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:12,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:12,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:12,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 124 transitions, 1017 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:12,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:12,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:12,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:12,569 INFO L124 PetriNetUnfolderBase]: 917/1770 cut-off events. [2024-06-27 18:28:12,570 INFO L125 PetriNetUnfolderBase]: For 20304/20310 co-relation queries the response was YES. [2024-06-27 18:28:12,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 1770 events. 917/1770 cut-off events. For 20304/20310 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10544 event pairs, 187 based on Foata normal form. 3/1704 useless extension candidates. Maximal degree in co-relation 7933. Up to 1254 conditions per place. [2024-06-27 18:28:12,581 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 101 selfloop transitions, 43 changer transitions 0/152 dead transitions. [2024-06-27 18:28:12,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 152 transitions, 1415 flow [2024-06-27 18:28:12,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:28:12,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2024-06-27 18:28:12,584 INFO L175 Difference]: Start difference. First operand has 125 places, 124 transitions, 1017 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:28:12,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 152 transitions, 1415 flow [2024-06-27 18:28:12,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 152 transitions, 1321 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:12,614 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1014 flow [2024-06-27 18:28:12,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1014, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-06-27 18:28:12,615 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-27 18:28:12,615 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1014 flow [2024-06-27 18:28:12,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:12,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:12,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:12,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:28:12,616 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:12,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash 637832796, now seen corresponding path program 3 times [2024-06-27 18:28:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:12,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668147209] [2024-06-27 18:28:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:12,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:13,244 INFO 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 18:28:13,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:13,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668147209] [2024-06-27 18:28:13,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668147209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:13,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:13,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007495880] [2024-06-27 18:28:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:13,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:13,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:13,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:13,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1014 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:13,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:13,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:13,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:13,603 INFO L124 PetriNetUnfolderBase]: 864/1721 cut-off events. [2024-06-27 18:28:13,604 INFO L125 PetriNetUnfolderBase]: For 21042/21062 co-relation queries the response was YES. [2024-06-27 18:28:13,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7632 conditions, 1721 events. 864/1721 cut-off events. For 21042/21062 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10510 event pairs, 186 based on Foata normal form. 21/1673 useless extension candidates. Maximal degree in co-relation 7576. Up to 1205 conditions per place. [2024-06-27 18:28:13,613 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 104 selfloop transitions, 30 changer transitions 0/155 dead transitions. [2024-06-27 18:28:13,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 155 transitions, 1472 flow [2024-06-27 18:28:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 18:28:13,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:28:13,637 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1014 flow. Second operand 8 states and 156 transitions. [2024-06-27 18:28:13,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 155 transitions, 1472 flow [2024-06-27 18:28:13,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 155 transitions, 1370 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:13,663 INFO L231 Difference]: Finished difference. Result has 127 places, 126 transitions, 999 flow [2024-06-27 18:28:13,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=999, PETRI_PLACES=127, PETRI_TRANSITIONS=126} [2024-06-27 18:28:13,663 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-27 18:28:13,663 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 126 transitions, 999 flow [2024-06-27 18:28:13,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:13,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:13,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:13,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:28:13,664 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:13,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:13,665 INFO L85 PathProgramCache]: Analyzing trace with hash 638188986, now seen corresponding path program 4 times [2024-06-27 18:28:13,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:13,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576724560] [2024-06-27 18:28:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:13,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:14,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576724560] [2024-06-27 18:28:14,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576724560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:14,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:14,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:28:14,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848295496] [2024-06-27 18:28:14,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:14,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:28:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:14,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:28:14,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:28:14,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:14,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 126 transitions, 999 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:14,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:14,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:14,643 INFO L124 PetriNetUnfolderBase]: 862/1700 cut-off events. [2024-06-27 18:28:14,643 INFO L125 PetriNetUnfolderBase]: For 21677/21697 co-relation queries the response was YES. [2024-06-27 18:28:14,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7548 conditions, 1700 events. 862/1700 cut-off events. For 21677/21697 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10269 event pairs, 183 based on Foata normal form. 21/1658 useless extension candidates. Maximal degree in co-relation 7491. Up to 1203 conditions per place. [2024-06-27 18:28:14,652 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 101 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-27 18:28:14,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 154 transitions, 1375 flow [2024-06-27 18:28:14,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 18:28:14,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-06-27 18:28:14,654 INFO L175 Difference]: Start difference. First operand has 127 places, 126 transitions, 999 flow. Second operand 8 states and 154 transitions. [2024-06-27 18:28:14,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 154 transitions, 1375 flow [2024-06-27 18:28:14,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 154 transitions, 1300 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:14,687 INFO L231 Difference]: Finished difference. Result has 130 places, 126 transitions, 993 flow [2024-06-27 18:28:14,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=993, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2024-06-27 18:28:14,688 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-27 18:28:14,688 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 993 flow [2024-06-27 18:28:14,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:14,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:14,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:28:14,688 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:14,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1146147530, now seen corresponding path program 1 times [2024-06-27 18:28:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696167248] [2024-06-27 18:28:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:14,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:15,570 INFO 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 18:28:15,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:15,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696167248] [2024-06-27 18:28:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696167248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:15,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:15,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:15,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771001706] [2024-06-27 18:28:15,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:15,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:15,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:15,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:15,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 126 transitions, 993 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:15,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:15,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:15,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:16,164 INFO L124 PetriNetUnfolderBase]: 860/1683 cut-off events. [2024-06-27 18:28:16,164 INFO L125 PetriNetUnfolderBase]: For 22340/22356 co-relation queries the response was YES. [2024-06-27 18:28:16,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7491 conditions, 1683 events. 860/1683 cut-off events. For 22340/22356 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10266 event pairs, 203 based on Foata normal form. 15/1635 useless extension candidates. Maximal degree in co-relation 7433. Up to 1301 conditions per place. [2024-06-27 18:28:16,175 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 123 selfloop transitions, 15 changer transitions 0/159 dead transitions. [2024-06-27 18:28:16,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 159 transitions, 1399 flow [2024-06-27 18:28:16,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:28:16,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 18:28:16,177 INFO L175 Difference]: Start difference. First operand has 130 places, 126 transitions, 993 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:28:16,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 159 transitions, 1399 flow [2024-06-27 18:28:16,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 159 transitions, 1342 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:16,207 INFO L231 Difference]: Finished difference. Result has 133 places, 128 transitions, 987 flow [2024-06-27 18:28:16,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=987, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2024-06-27 18:28:16,208 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-06-27 18:28:16,208 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 987 flow [2024-06-27 18:28:16,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:16,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:16,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:16,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:28:16,209 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:16,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1883077890, now seen corresponding path program 1 times [2024-06-27 18:28:16,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:16,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721209206] [2024-06-27 18:28:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:16,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:17,051 INFO 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 18:28:17,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:17,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721209206] [2024-06-27 18:28:17,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721209206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:17,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:17,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:17,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272065824] [2024-06-27 18:28:17,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:17,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:17,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:17,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:17,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 987 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:17,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:17,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:17,690 INFO L124 PetriNetUnfolderBase]: 861/1638 cut-off events. [2024-06-27 18:28:17,690 INFO L125 PetriNetUnfolderBase]: For 23214/23216 co-relation queries the response was YES. [2024-06-27 18:28:17,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7609 conditions, 1638 events. 861/1638 cut-off events. For 23214/23216 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9742 event pairs, 197 based on Foata normal form. 3/1595 useless extension candidates. Maximal degree in co-relation 7550. Up to 1246 conditions per place. [2024-06-27 18:28:17,699 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 117 selfloop transitions, 33 changer transitions 0/169 dead transitions. [2024-06-27 18:28:17,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 169 transitions, 1463 flow [2024-06-27 18:28:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:28:17,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2024-06-27 18:28:17,701 INFO L175 Difference]: Start difference. First operand has 133 places, 128 transitions, 987 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:28:17,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 169 transitions, 1463 flow [2024-06-27 18:28:17,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 169 transitions, 1380 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 18:28:17,737 INFO L231 Difference]: Finished difference. Result has 133 places, 133 transitions, 1045 flow [2024-06-27 18:28:17,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1045, PETRI_PLACES=133, PETRI_TRANSITIONS=133} [2024-06-27 18:28:17,737 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-06-27 18:28:17,737 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 133 transitions, 1045 flow [2024-06-27 18:28:17,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:17,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:17,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:28:17,738 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:17,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2053786117, now seen corresponding path program 1 times [2024-06-27 18:28:17,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:17,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139104173] [2024-06-27 18:28:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:17,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:18,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139104173] [2024-06-27 18:28:18,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139104173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:18,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:18,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:18,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102328028] [2024-06-27 18:28:18,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:18,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:18,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:18,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:18,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:18,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:18,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 133 transitions, 1045 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:18,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:18,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:18,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:18,949 INFO L124 PetriNetUnfolderBase]: 950/1749 cut-off events. [2024-06-27 18:28:18,949 INFO L125 PetriNetUnfolderBase]: For 25420/25420 co-relation queries the response was YES. [2024-06-27 18:28:18,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8273 conditions, 1749 events. 950/1749 cut-off events. For 25420/25420 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10232 event pairs, 219 based on Foata normal form. 2/1706 useless extension candidates. Maximal degree in co-relation 8213. Up to 1373 conditions per place. [2024-06-27 18:28:18,959 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 130 selfloop transitions, 34 changer transitions 0/172 dead transitions. [2024-06-27 18:28:18,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 172 transitions, 1535 flow [2024-06-27 18:28:18,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:18,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:28:18,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 18:28:18,960 INFO L175 Difference]: Start difference. First operand has 133 places, 133 transitions, 1045 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:28:18,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 172 transitions, 1535 flow [2024-06-27 18:28:18,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 172 transitions, 1440 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:18,990 INFO L231 Difference]: Finished difference. Result has 136 places, 135 transitions, 1054 flow [2024-06-27 18:28:18,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1054, PETRI_PLACES=136, PETRI_TRANSITIONS=135} [2024-06-27 18:28:18,991 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-27 18:28:18,991 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 1054 flow [2024-06-27 18:28:18,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:18,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:18,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:18,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:28:18,992 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:18,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:18,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1887761587, now seen corresponding path program 2 times [2024-06-27 18:28:18,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:18,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49607621] [2024-06-27 18:28:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:18,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:19,658 INFO 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 18:28:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49607621] [2024-06-27 18:28:19,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49607621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:19,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:19,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276498326] [2024-06-27 18:28:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:19,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:19,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:19,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:19,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:19,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 1054 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:19,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:19,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:19,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:20,167 INFO L124 PetriNetUnfolderBase]: 998/1842 cut-off events. [2024-06-27 18:28:20,167 INFO L125 PetriNetUnfolderBase]: For 29009/29009 co-relation queries the response was YES. [2024-06-27 18:28:20,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8881 conditions, 1842 events. 998/1842 cut-off events. For 29009/29009 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10947 event pairs, 220 based on Foata normal form. 2/1795 useless extension candidates. Maximal degree in co-relation 8820. Up to 1344 conditions per place. [2024-06-27 18:28:20,178 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 127 selfloop transitions, 41 changer transitions 0/176 dead transitions. [2024-06-27 18:28:20,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 176 transitions, 1654 flow [2024-06-27 18:28:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:20,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:28:20,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:28:20,179 INFO L175 Difference]: Start difference. First operand has 136 places, 135 transitions, 1054 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:28:20,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 176 transitions, 1654 flow [2024-06-27 18:28:20,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 176 transitions, 1568 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:20,223 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1119 flow [2024-06-27 18:28:20,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1119, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2024-06-27 18:28:20,225 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-27 18:28:20,225 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1119 flow [2024-06-27 18:28:20,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:20,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:20,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:20,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:28:20,226 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:20,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1887761866, now seen corresponding path program 1 times [2024-06-27 18:28:20,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:20,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76961125] [2024-06-27 18:28:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:20,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:20,894 INFO 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 18:28:20,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:20,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76961125] [2024-06-27 18:28:20,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76961125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:20,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934233001] [2024-06-27 18:28:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:20,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:20,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:20,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:20,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:20,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1119 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:20,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:20,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:20,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:21,410 INFO L124 PetriNetUnfolderBase]: 1009/1863 cut-off events. [2024-06-27 18:28:21,410 INFO L125 PetriNetUnfolderBase]: For 30371/30371 co-relation queries the response was YES. [2024-06-27 18:28:21,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9095 conditions, 1863 events. 1009/1863 cut-off events. For 30371/30371 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11106 event pairs, 236 based on Foata normal form. 1/1814 useless extension candidates. Maximal degree in co-relation 9033. Up to 1540 conditions per place. [2024-06-27 18:28:21,419 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 143 selfloop transitions, 25 changer transitions 0/176 dead transitions. [2024-06-27 18:28:21,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 176 transitions, 1611 flow [2024-06-27 18:28:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:28:21,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672364672364672 [2024-06-27 18:28:21,421 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1119 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:28:21,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 176 transitions, 1611 flow [2024-06-27 18:28:21,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 176 transitions, 1540 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:21,453 INFO L231 Difference]: Finished difference. Result has 142 places, 141 transitions, 1127 flow [2024-06-27 18:28:21,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1127, PETRI_PLACES=142, PETRI_TRANSITIONS=141} [2024-06-27 18:28:21,453 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-27 18:28:21,454 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 141 transitions, 1127 flow [2024-06-27 18:28:21,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:21,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:21,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:21,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:28:21,454 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:21,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1714558119, now seen corresponding path program 3 times [2024-06-27 18:28:21,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:21,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728479759] [2024-06-27 18:28:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:21,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:22,112 INFO 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 18:28:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728479759] [2024-06-27 18:28:22,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728479759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:22,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:22,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:22,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552215615] [2024-06-27 18:28:22,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:22,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:22,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:22,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:22,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:22,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 141 transitions, 1127 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:22,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:22,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:22,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:22,652 INFO L124 PetriNetUnfolderBase]: 1005/1844 cut-off events. [2024-06-27 18:28:22,652 INFO L125 PetriNetUnfolderBase]: For 30512/30512 co-relation queries the response was YES. [2024-06-27 18:28:22,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9041 conditions, 1844 events. 1005/1844 cut-off events. For 30512/30512 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10880 event pairs, 228 based on Foata normal form. 2/1801 useless extension candidates. Maximal degree in co-relation 8977. Up to 1358 conditions per place. [2024-06-27 18:28:22,663 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 130 selfloop transitions, 39 changer transitions 0/177 dead transitions. [2024-06-27 18:28:22,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 177 transitions, 1601 flow [2024-06-27 18:28:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:28:22,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:28:22,665 INFO L175 Difference]: Start difference. First operand has 142 places, 141 transitions, 1127 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:28:22,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 177 transitions, 1601 flow [2024-06-27 18:28:22,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 177 transitions, 1522 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:22,704 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 1131 flow [2024-06-27 18:28:22,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1131, PETRI_PLACES=144, PETRI_TRANSITIONS=141} [2024-06-27 18:28:22,705 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 101 predicate places. [2024-06-27 18:28:22,705 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 1131 flow [2024-06-27 18:28:22,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:22,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:22,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:22,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:28:22,705 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:22,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1887941739, now seen corresponding path program 4 times [2024-06-27 18:28:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:22,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631650957] [2024-06-27 18:28:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:23,348 INFO 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 18:28:23,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:23,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631650957] [2024-06-27 18:28:23,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631650957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:23,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676965490] [2024-06-27 18:28:23,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:23,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:23,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:23,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:23,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 141 transitions, 1131 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:23,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:23,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:23,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:23,799 INFO L124 PetriNetUnfolderBase]: 1053/1935 cut-off events. [2024-06-27 18:28:23,799 INFO L125 PetriNetUnfolderBase]: For 34159/34159 co-relation queries the response was YES. [2024-06-27 18:28:23,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9636 conditions, 1935 events. 1053/1935 cut-off events. For 34159/34159 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11589 event pairs, 242 based on Foata normal form. 2/1887 useless extension candidates. Maximal degree in co-relation 9571. Up to 1294 conditions per place. [2024-06-27 18:28:23,812 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 124 selfloop transitions, 48 changer transitions 0/180 dead transitions. [2024-06-27 18:28:23,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 180 transitions, 1749 flow [2024-06-27 18:28:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:23,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:23,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:28:23,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 18:28:23,815 INFO L175 Difference]: Start difference. First operand has 144 places, 141 transitions, 1131 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:28:23,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 180 transitions, 1749 flow [2024-06-27 18:28:23,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 180 transitions, 1656 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:23,873 INFO L231 Difference]: Finished difference. Result has 145 places, 145 transitions, 1211 flow [2024-06-27 18:28:23,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1211, PETRI_PLACES=145, PETRI_TRANSITIONS=145} [2024-06-27 18:28:23,873 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 102 predicate places. [2024-06-27 18:28:23,874 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 145 transitions, 1211 flow [2024-06-27 18:28:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:23,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:23,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:23,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:28:23,874 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:23,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1887949458, now seen corresponding path program 2 times [2024-06-27 18:28:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:23,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907485611] [2024-06-27 18:28:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:24,509 INFO 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 18:28:24,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:24,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907485611] [2024-06-27 18:28:24,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907485611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:24,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:24,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:24,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087858146] [2024-06-27 18:28:24,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:24,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:24,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:24,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:24,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:24,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:24,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 145 transitions, 1211 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:24,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:24,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:24,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:24,943 INFO L124 PetriNetUnfolderBase]: 1077/1990 cut-off events. [2024-06-27 18:28:24,944 INFO L125 PetriNetUnfolderBase]: For 36576/36576 co-relation queries the response was YES. [2024-06-27 18:28:24,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10040 conditions, 1990 events. 1077/1990 cut-off events. For 36576/36576 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12006 event pairs, 245 based on Foata normal form. 1/1935 useless extension candidates. Maximal degree in co-relation 9974. Up to 1548 conditions per place. [2024-06-27 18:28:24,956 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 141 selfloop transitions, 34 changer transitions 0/183 dead transitions. [2024-06-27 18:28:24,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 183 transitions, 1817 flow [2024-06-27 18:28:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:28:24,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:28:24,957 INFO L175 Difference]: Start difference. First operand has 145 places, 145 transitions, 1211 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:28:24,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 183 transitions, 1817 flow [2024-06-27 18:28:25,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 183 transitions, 1695 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:25,003 INFO L231 Difference]: Finished difference. Result has 148 places, 149 transitions, 1214 flow [2024-06-27 18:28:25,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1214, PETRI_PLACES=148, PETRI_TRANSITIONS=149} [2024-06-27 18:28:25,003 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-06-27 18:28:25,003 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 149 transitions, 1214 flow [2024-06-27 18:28:25,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:25,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:25,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:25,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:28:25,004 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:25,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1887949179, now seen corresponding path program 5 times [2024-06-27 18:28:25,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:25,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423224273] [2024-06-27 18:28:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:25,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:25,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:25,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423224273] [2024-06-27 18:28:25,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423224273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:25,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:25,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:25,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269446217] [2024-06-27 18:28:25,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:25,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:25,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:25,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:25,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:25,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:25,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 149 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:25,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:25,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:25,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:26,202 INFO L124 PetriNetUnfolderBase]: 1099/2011 cut-off events. [2024-06-27 18:28:26,203 INFO L125 PetriNetUnfolderBase]: For 38260/38260 co-relation queries the response was YES. [2024-06-27 18:28:26,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10084 conditions, 2011 events. 1099/2011 cut-off events. For 38260/38260 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12064 event pairs, 241 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 10017. Up to 1349 conditions per place. [2024-06-27 18:28:26,215 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 130 selfloop transitions, 49 changer transitions 0/187 dead transitions. [2024-06-27 18:28:26,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 187 transitions, 1816 flow [2024-06-27 18:28:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:28:26,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2024-06-27 18:28:26,216 INFO L175 Difference]: Start difference. First operand has 148 places, 149 transitions, 1214 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:28:26,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 187 transitions, 1816 flow [2024-06-27 18:28:26,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 187 transitions, 1759 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:26,269 INFO L231 Difference]: Finished difference. Result has 152 places, 151 transitions, 1290 flow [2024-06-27 18:28:26,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1290, PETRI_PLACES=152, PETRI_TRANSITIONS=151} [2024-06-27 18:28:26,270 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 109 predicate places. [2024-06-27 18:28:26,270 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 151 transitions, 1290 flow [2024-06-27 18:28:26,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:26,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:26,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:26,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:28:26,270 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:26,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1888208928, now seen corresponding path program 3 times [2024-06-27 18:28:26,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:26,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131610694] [2024-06-27 18:28:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:26,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:26,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131610694] [2024-06-27 18:28:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131610694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:26,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:26,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:26,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052215559] [2024-06-27 18:28:26,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:26,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:26,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:26,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:26,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:27,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:27,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 151 transitions, 1290 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:27,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:27,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:27,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:27,515 INFO L124 PetriNetUnfolderBase]: 1110/2050 cut-off events. [2024-06-27 18:28:27,515 INFO L125 PetriNetUnfolderBase]: For 39401/39401 co-relation queries the response was YES. [2024-06-27 18:28:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10436 conditions, 2050 events. 1110/2050 cut-off events. For 39401/39401 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 12483 event pairs, 244 based on Foata normal form. 1/1993 useless extension candidates. Maximal degree in co-relation 10367. Up to 1594 conditions per place. [2024-06-27 18:28:27,530 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 142 selfloop transitions, 37 changer transitions 0/187 dead transitions. [2024-06-27 18:28:27,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 187 transitions, 1886 flow [2024-06-27 18:28:27,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:28:27,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 18:28:27,532 INFO L175 Difference]: Start difference. First operand has 152 places, 151 transitions, 1290 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:28:27,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 187 transitions, 1886 flow [2024-06-27 18:28:27,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 187 transitions, 1777 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:27,582 INFO L231 Difference]: Finished difference. Result has 155 places, 153 transitions, 1286 flow [2024-06-27 18:28:27,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1286, PETRI_PLACES=155, PETRI_TRANSITIONS=153} [2024-06-27 18:28:27,584 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 112 predicate places. [2024-06-27 18:28:27,584 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 153 transitions, 1286 flow [2024-06-27 18:28:27,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:27,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:27,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:27,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:28:27,584 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:27,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2061414597, now seen corresponding path program 1 times [2024-06-27 18:28:27,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:27,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505849158] [2024-06-27 18:28:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:27,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:28,259 INFO 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 18:28:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:28,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505849158] [2024-06-27 18:28:28,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505849158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:28,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:28,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370191911] [2024-06-27 18:28:28,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:28,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:28,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:28,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:28,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:28,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 153 transitions, 1286 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:28,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:28,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:28,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:28,779 INFO L124 PetriNetUnfolderBase]: 1042/1953 cut-off events. [2024-06-27 18:28:28,779 INFO L125 PetriNetUnfolderBase]: For 40674/40690 co-relation queries the response was YES. [2024-06-27 18:28:28,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9759 conditions, 1953 events. 1042/1953 cut-off events. For 40674/40690 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12017 event pairs, 244 based on Foata normal form. 17/1919 useless extension candidates. Maximal degree in co-relation 9689. Up to 1551 conditions per place. [2024-06-27 18:28:28,792 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 144 selfloop transitions, 19 changer transitions 0/188 dead transitions. [2024-06-27 18:28:28,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 188 transitions, 1764 flow [2024-06-27 18:28:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:28:28,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 18:28:28,794 INFO L175 Difference]: Start difference. First operand has 155 places, 153 transitions, 1286 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:28:28,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 188 transitions, 1764 flow [2024-06-27 18:28:28,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 188 transitions, 1671 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:28,858 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 1260 flow [2024-06-27 18:28:28,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1260, PETRI_PLACES=157, PETRI_TRANSITIONS=155} [2024-06-27 18:28:28,858 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-27 18:28:28,858 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 1260 flow [2024-06-27 18:28:28,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:28,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:28,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:28,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:28:28,859 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:28,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1888218228, now seen corresponding path program 4 times [2024-06-27 18:28:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:28,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975270720] [2024-06-27 18:28:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:28,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:29,473 INFO 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 18:28:29,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:29,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975270720] [2024-06-27 18:28:29,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975270720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:29,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:29,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256007352] [2024-06-27 18:28:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:29,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:29,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:29,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:29,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:29,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 155 transitions, 1260 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:29,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:29,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:29,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:29,876 INFO L124 PetriNetUnfolderBase]: 1119/2046 cut-off events. [2024-06-27 18:28:29,877 INFO L125 PetriNetUnfolderBase]: For 41019/41019 co-relation queries the response was YES. [2024-06-27 18:28:29,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 2046 events. 1119/2046 cut-off events. For 41019/41019 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12308 event pairs, 241 based on Foata normal form. 1/1995 useless extension candidates. Maximal degree in co-relation 10253. Up to 1609 conditions per place. [2024-06-27 18:28:29,891 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 141 selfloop transitions, 39 changer transitions 0/188 dead transitions. [2024-06-27 18:28:29,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 188 transitions, 1752 flow [2024-06-27 18:28:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:28:29,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47293447293447294 [2024-06-27 18:28:29,892 INFO L175 Difference]: Start difference. First operand has 157 places, 155 transitions, 1260 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:28:29,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 188 transitions, 1752 flow [2024-06-27 18:28:29,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 188 transitions, 1685 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:29,948 INFO L231 Difference]: Finished difference. Result has 159 places, 155 transitions, 1276 flow [2024-06-27 18:28:29,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1276, PETRI_PLACES=159, PETRI_TRANSITIONS=155} [2024-06-27 18:28:29,949 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2024-06-27 18:28:29,949 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 155 transitions, 1276 flow [2024-06-27 18:28:29,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:29,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:29,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:28:29,953 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:29,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1744146489, now seen corresponding path program 6 times [2024-06-27 18:28:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:29,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749496315] [2024-06-27 18:28:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:29,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:30,564 INFO 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 18:28:30,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:30,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749496315] [2024-06-27 18:28:30,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749496315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:30,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:30,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:30,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29121662] [2024-06-27 18:28:30,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:30,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:30,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:30,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:30,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:30,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:30,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 155 transitions, 1276 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:30,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:30,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:31,058 INFO L124 PetriNetUnfolderBase]: 1115/2057 cut-off events. [2024-06-27 18:28:31,058 INFO L125 PetriNetUnfolderBase]: For 41565/41565 co-relation queries the response was YES. [2024-06-27 18:28:31,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10292 conditions, 2057 events. 1115/2057 cut-off events. For 41565/41565 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12502 event pairs, 224 based on Foata normal form. 2/2001 useless extension candidates. Maximal degree in co-relation 10220. Up to 1377 conditions per place. [2024-06-27 18:28:31,072 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 128 selfloop transitions, 53 changer transitions 0/189 dead transitions. [2024-06-27 18:28:31,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 189 transitions, 1770 flow [2024-06-27 18:28:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:28:31,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:28:31,073 INFO L175 Difference]: Start difference. First operand has 159 places, 155 transitions, 1276 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:28:31,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 189 transitions, 1770 flow [2024-06-27 18:28:31,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 189 transitions, 1667 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:31,135 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 1284 flow [2024-06-27 18:28:31,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1284, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2024-06-27 18:28:31,136 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-06-27 18:28:31,136 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 1284 flow [2024-06-27 18:28:31,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:31,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:31,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:31,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:28:31,137 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:31,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1690591197, now seen corresponding path program 2 times [2024-06-27 18:28:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:31,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216021625] [2024-06-27 18:28:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:31,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:31,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:31,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216021625] [2024-06-27 18:28:31,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216021625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:31,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:31,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:31,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528324154] [2024-06-27 18:28:31,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:31,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:31,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:31,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:31,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 1284 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:31,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:31,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:31,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:32,484 INFO L124 PetriNetUnfolderBase]: 1046/2028 cut-off events. [2024-06-27 18:28:32,484 INFO L125 PetriNetUnfolderBase]: For 42789/42805 co-relation queries the response was YES. [2024-06-27 18:28:32,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9908 conditions, 2028 events. 1046/2028 cut-off events. For 42789/42805 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12816 event pairs, 240 based on Foata normal form. 15/1969 useless extension candidates. Maximal degree in co-relation 9835. Up to 1566 conditions per place. [2024-06-27 18:28:32,496 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 148 selfloop transitions, 15 changer transitions 0/188 dead transitions. [2024-06-27 18:28:32,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 188 transitions, 1762 flow [2024-06-27 18:28:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:32,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:28:32,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47863247863247865 [2024-06-27 18:28:32,497 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 1284 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:28:32,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 188 transitions, 1762 flow [2024-06-27 18:28:32,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 188 transitions, 1640 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:32,561 INFO L231 Difference]: Finished difference. Result has 160 places, 157 transitions, 1225 flow [2024-06-27 18:28:32,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1225, PETRI_PLACES=160, PETRI_TRANSITIONS=157} [2024-06-27 18:28:32,561 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-06-27 18:28:32,561 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 157 transitions, 1225 flow [2024-06-27 18:28:32,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:32,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:32,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:32,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:28:32,562 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:32,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1690977147, now seen corresponding path program 3 times [2024-06-27 18:28:32,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:32,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977643390] [2024-06-27 18:28:32,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:32,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:33,241 INFO 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 18:28:33,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:33,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977643390] [2024-06-27 18:28:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977643390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:33,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:33,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:33,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017304487] [2024-06-27 18:28:33,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:33,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:33,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:33,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:33,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 157 transitions, 1225 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:33,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:33,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:33,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:33,717 INFO L124 PetriNetUnfolderBase]: 1063/2063 cut-off events. [2024-06-27 18:28:33,717 INFO L125 PetriNetUnfolderBase]: For 44003/44023 co-relation queries the response was YES. [2024-06-27 18:28:33,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9966 conditions, 2063 events. 1063/2063 cut-off events. For 44003/44023 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12877 event pairs, 209 based on Foata normal form. 21/2011 useless extension candidates. Maximal degree in co-relation 9892. Up to 1430 conditions per place. [2024-06-27 18:28:33,730 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 132 selfloop transitions, 38 changer transitions 0/195 dead transitions. [2024-06-27 18:28:33,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 195 transitions, 1851 flow [2024-06-27 18:28:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:28:33,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985754985754986 [2024-06-27 18:28:33,731 INFO L175 Difference]: Start difference. First operand has 160 places, 157 transitions, 1225 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:28:33,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 195 transitions, 1851 flow [2024-06-27 18:28:33,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 195 transitions, 1804 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:33,800 INFO L231 Difference]: Finished difference. Result has 162 places, 161 transitions, 1319 flow [2024-06-27 18:28:33,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1319, PETRI_PLACES=162, PETRI_TRANSITIONS=161} [2024-06-27 18:28:33,800 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2024-06-27 18:28:33,800 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 161 transitions, 1319 flow [2024-06-27 18:28:33,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:33,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:33,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:33,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:28:33,801 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:33,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1182275961, now seen corresponding path program 4 times [2024-06-27 18:28:33,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:33,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000464419] [2024-06-27 18:28:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:34,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:34,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000464419] [2024-06-27 18:28:34,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000464419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:34,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:34,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:34,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322705300] [2024-06-27 18:28:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:34,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:34,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:34,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 161 transitions, 1319 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:34,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:34,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:34,934 INFO L124 PetriNetUnfolderBase]: 1074/2080 cut-off events. [2024-06-27 18:28:34,934 INFO L125 PetriNetUnfolderBase]: For 46364/46384 co-relation queries the response was YES. [2024-06-27 18:28:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10279 conditions, 2080 events. 1074/2080 cut-off events. For 46364/46384 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13001 event pairs, 209 based on Foata normal form. 21/2028 useless extension candidates. Maximal degree in co-relation 10204. Up to 1442 conditions per place. [2024-06-27 18:28:34,949 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 134 selfloop transitions, 38 changer transitions 0/197 dead transitions. [2024-06-27 18:28:34,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 197 transitions, 1927 flow [2024-06-27 18:28:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:34,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:28:34,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2024-06-27 18:28:34,951 INFO L175 Difference]: Start difference. First operand has 162 places, 161 transitions, 1319 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:28:34,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 197 transitions, 1927 flow [2024-06-27 18:28:35,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 197 transitions, 1864 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:35,046 INFO L231 Difference]: Finished difference. Result has 166 places, 163 transitions, 1369 flow [2024-06-27 18:28:35,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1369, PETRI_PLACES=166, PETRI_TRANSITIONS=163} [2024-06-27 18:28:35,046 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 123 predicate places. [2024-06-27 18:28:35,047 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 163 transitions, 1369 flow [2024-06-27 18:28:35,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:35,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:35,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:35,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:28:35,047 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:35,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1702019378, now seen corresponding path program 5 times [2024-06-27 18:28:35,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:35,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038729071] [2024-06-27 18:28:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:35,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:35,673 INFO 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 18:28:35,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:35,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038729071] [2024-06-27 18:28:35,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038729071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:35,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:35,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:35,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819718498] [2024-06-27 18:28:35,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:35,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:35,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:35,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:35,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:35,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:35,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 163 transitions, 1369 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:35,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:35,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:35,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:36,149 INFO L124 PetriNetUnfolderBase]: 1191/2268 cut-off events. [2024-06-27 18:28:36,149 INFO L125 PetriNetUnfolderBase]: For 50478/50484 co-relation queries the response was YES. [2024-06-27 18:28:36,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11507 conditions, 2268 events. 1191/2268 cut-off events. For 50478/50484 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14188 event pairs, 216 based on Foata normal form. 3/2183 useless extension candidates. Maximal degree in co-relation 11430. Up to 1521 conditions per place. [2024-06-27 18:28:36,165 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 142 selfloop transitions, 57 changer transitions 0/207 dead transitions. [2024-06-27 18:28:36,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 207 transitions, 2301 flow [2024-06-27 18:28:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:28:36,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 18:28:36,166 INFO L175 Difference]: Start difference. First operand has 166 places, 163 transitions, 1369 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:28:36,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 207 transitions, 2301 flow [2024-06-27 18:28:36,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 207 transitions, 2221 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:36,270 INFO L231 Difference]: Finished difference. Result has 169 places, 171 transitions, 1524 flow [2024-06-27 18:28:36,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1524, PETRI_PLACES=169, PETRI_TRANSITIONS=171} [2024-06-27 18:28:36,270 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-27 18:28:36,270 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 171 transitions, 1524 flow [2024-06-27 18:28:36,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:36,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:36,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:36,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:28:36,271 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:36,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1690977488, now seen corresponding path program 6 times [2024-06-27 18:28:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:36,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925150549] [2024-06-27 18:28:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:36,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:36,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925150549] [2024-06-27 18:28:36,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925150549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:36,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:36,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:36,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25752718] [2024-06-27 18:28:36,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:36,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:36,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:36,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:36,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:36,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:36,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 171 transitions, 1524 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:36,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:36,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:36,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:37,364 INFO L124 PetriNetUnfolderBase]: 1189/2247 cut-off events. [2024-06-27 18:28:37,365 INFO L125 PetriNetUnfolderBase]: For 51578/51584 co-relation queries the response was YES. [2024-06-27 18:28:37,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11602 conditions, 2247 events. 1189/2247 cut-off events. For 51578/51584 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13915 event pairs, 210 based on Foata normal form. 3/2168 useless extension candidates. Maximal degree in co-relation 11524. Up to 1519 conditions per place. [2024-06-27 18:28:37,382 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 133 selfloop transitions, 64 changer transitions 0/205 dead transitions. [2024-06-27 18:28:37,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 205 transitions, 2154 flow [2024-06-27 18:28:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:37,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:28:37,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:28:37,388 INFO L175 Difference]: Start difference. First operand has 169 places, 171 transitions, 1524 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:28:37,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 205 transitions, 2154 flow [2024-06-27 18:28:37,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 205 transitions, 2068 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 18:28:37,502 INFO L231 Difference]: Finished difference. Result has 175 places, 171 transitions, 1571 flow [2024-06-27 18:28:37,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1571, PETRI_PLACES=175, PETRI_TRANSITIONS=171} [2024-06-27 18:28:37,503 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-27 18:28:37,503 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 171 transitions, 1571 flow [2024-06-27 18:28:37,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:37,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:37,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:37,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:28:37,503 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:37,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:37,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1702028957, now seen corresponding path program 7 times [2024-06-27 18:28:37,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:37,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594927730] [2024-06-27 18:28:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:37,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:38,092 INFO 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 18:28:38,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594927730] [2024-06-27 18:28:38,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594927730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:38,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:38,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:38,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016785358] [2024-06-27 18:28:38,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:38,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:38,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:38,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:38,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:38,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:38,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 171 transitions, 1571 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:38,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:38,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:38,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:38,689 INFO L124 PetriNetUnfolderBase]: 1227/2333 cut-off events. [2024-06-27 18:28:38,690 INFO L125 PetriNetUnfolderBase]: For 56022/56028 co-relation queries the response was YES. [2024-06-27 18:28:38,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12218 conditions, 2333 events. 1227/2333 cut-off events. For 56022/56028 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14702 event pairs, 210 based on Foata normal form. 4/2247 useless extension candidates. Maximal degree in co-relation 12138. Up to 1367 conditions per place. [2024-06-27 18:28:38,708 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 134 selfloop transitions, 68 changer transitions 0/210 dead transitions. [2024-06-27 18:28:38,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 210 transitions, 2281 flow [2024-06-27 18:28:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:28:38,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928774928774929 [2024-06-27 18:28:38,710 INFO L175 Difference]: Start difference. First operand has 175 places, 171 transitions, 1571 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:28:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 210 transitions, 2281 flow [2024-06-27 18:28:38,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 210 transitions, 2171 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:38,821 INFO L231 Difference]: Finished difference. Result has 177 places, 175 transitions, 1674 flow [2024-06-27 18:28:38,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1674, PETRI_PLACES=177, PETRI_TRANSITIONS=175} [2024-06-27 18:28:38,822 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 134 predicate places. [2024-06-27 18:28:38,822 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 175 transitions, 1674 flow [2024-06-27 18:28:38,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:38,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:38,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:38,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:28:38,823 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:38,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1182285602, now seen corresponding path program 7 times [2024-06-27 18:28:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745810389] [2024-06-27 18:28:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:39,502 INFO 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 18:28:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:39,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745810389] [2024-06-27 18:28:39,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745810389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:39,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:39,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632216938] [2024-06-27 18:28:39,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:39,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:39,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:39,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:39,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:39,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 1674 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:39,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:39,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:39,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:39,991 INFO L124 PetriNetUnfolderBase]: 1225/2295 cut-off events. [2024-06-27 18:28:39,991 INFO L125 PetriNetUnfolderBase]: For 56406/56412 co-relation queries the response was YES. [2024-06-27 18:28:39,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12357 conditions, 2295 events. 1225/2295 cut-off events. For 56406/56412 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14180 event pairs, 209 based on Foata normal form. 3/2222 useless extension candidates. Maximal degree in co-relation 12276. Up to 1576 conditions per place. [2024-06-27 18:28:40,006 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 143 selfloop transitions, 58 changer transitions 0/209 dead transitions. [2024-06-27 18:28:40,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 209 transitions, 2316 flow [2024-06-27 18:28:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:40,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:28:40,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4843304843304843 [2024-06-27 18:28:40,008 INFO L175 Difference]: Start difference. First operand has 177 places, 175 transitions, 1674 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:28:40,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 209 transitions, 2316 flow [2024-06-27 18:28:40,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 209 transitions, 2211 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 18:28:40,125 INFO L231 Difference]: Finished difference. Result has 181 places, 175 transitions, 1690 flow [2024-06-27 18:28:40,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1690, PETRI_PLACES=181, PETRI_TRANSITIONS=175} [2024-06-27 18:28:40,125 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2024-06-27 18:28:40,125 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 175 transitions, 1690 flow [2024-06-27 18:28:40,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:40,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:40,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:28:40,126 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:40,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:40,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2070105130, now seen corresponding path program 8 times [2024-06-27 18:28:40,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:40,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319260507] [2024-06-27 18:28:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:40,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:40,785 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 18:28:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319260507] [2024-06-27 18:28:40,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319260507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:40,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851980257] [2024-06-27 18:28:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:40,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:40,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:40,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:40,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:40,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 175 transitions, 1690 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:40,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:40,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:40,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:41,281 INFO L124 PetriNetUnfolderBase]: 1236/2343 cut-off events. [2024-06-27 18:28:41,281 INFO L125 PetriNetUnfolderBase]: For 57558/57564 co-relation queries the response was YES. [2024-06-27 18:28:41,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12570 conditions, 2343 events. 1236/2343 cut-off events. For 57558/57564 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14669 event pairs, 234 based on Foata normal form. 3/2261 useless extension candidates. Maximal degree in co-relation 12487. Up to 1588 conditions per place. [2024-06-27 18:28:41,301 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 144 selfloop transitions, 59 changer transitions 0/211 dead transitions. [2024-06-27 18:28:41,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 211 transitions, 2374 flow [2024-06-27 18:28:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:28:41,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:28:41,303 INFO L175 Difference]: Start difference. First operand has 181 places, 175 transitions, 1690 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:28:41,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 211 transitions, 2374 flow [2024-06-27 18:28:41,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 211 transitions, 2249 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:41,451 INFO L231 Difference]: Finished difference. Result has 182 places, 177 transitions, 1724 flow [2024-06-27 18:28:41,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1724, PETRI_PLACES=182, PETRI_TRANSITIONS=177} [2024-06-27 18:28:41,452 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-06-27 18:28:41,452 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 177 transitions, 1724 flow [2024-06-27 18:28:41,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:41,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:41,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:41,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:28:41,453 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:41,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1496252021, now seen corresponding path program 8 times [2024-06-27 18:28:41,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:41,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523179548] [2024-06-27 18:28:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:41,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:41,956 INFO 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 18:28:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:41,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523179548] [2024-06-27 18:28:41,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523179548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:41,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:41,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:41,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952408467] [2024-06-27 18:28:41,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:41,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:41,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:42,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:42,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 177 transitions, 1724 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:42,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:42,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:42,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:42,485 INFO L124 PetriNetUnfolderBase]: 1258/2375 cut-off events. [2024-06-27 18:28:42,486 INFO L125 PetriNetUnfolderBase]: For 61345/61351 co-relation queries the response was YES. [2024-06-27 18:28:42,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12837 conditions, 2375 events. 1258/2375 cut-off events. For 61345/61351 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14867 event pairs, 248 based on Foata normal form. 4/2297 useless extension candidates. Maximal degree in co-relation 12753. Up to 1399 conditions per place. [2024-06-27 18:28:42,505 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 140 selfloop transitions, 66 changer transitions 0/214 dead transitions. [2024-06-27 18:28:42,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 214 transitions, 2418 flow [2024-06-27 18:28:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:28:42,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-06-27 18:28:42,506 INFO L175 Difference]: Start difference. First operand has 182 places, 177 transitions, 1724 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:28:42,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 214 transitions, 2418 flow [2024-06-27 18:28:42,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 214 transitions, 2269 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:42,687 INFO L231 Difference]: Finished difference. Result has 184 places, 179 transitions, 1750 flow [2024-06-27 18:28:42,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1750, PETRI_PLACES=184, PETRI_TRANSITIONS=179} [2024-06-27 18:28:42,688 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-27 18:28:42,688 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 179 transitions, 1750 flow [2024-06-27 18:28:42,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:42,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:42,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:42,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:28:42,689 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:42,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:42,689 INFO L85 PathProgramCache]: Analyzing trace with hash -267047956, now seen corresponding path program 9 times [2024-06-27 18:28:42,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:42,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512248192] [2024-06-27 18:28:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:42,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:43,295 INFO 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 18:28:43,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:43,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512248192] [2024-06-27 18:28:43,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512248192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:43,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:43,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:43,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185798880] [2024-06-27 18:28:43,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:43,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:43,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:43,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:43,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 179 transitions, 1750 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:43,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:43,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:43,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:43,832 INFO L124 PetriNetUnfolderBase]: 1269/2405 cut-off events. [2024-06-27 18:28:43,832 INFO L125 PetriNetUnfolderBase]: For 62242/62248 co-relation queries the response was YES. [2024-06-27 18:28:43,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12926 conditions, 2405 events. 1269/2405 cut-off events. For 62242/62248 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15124 event pairs, 235 based on Foata normal form. 3/2321 useless extension candidates. Maximal degree in co-relation 12842. Up to 1634 conditions per place. [2024-06-27 18:28:43,850 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 148 selfloop transitions, 59 changer transitions 0/215 dead transitions. [2024-06-27 18:28:43,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 215 transitions, 2438 flow [2024-06-27 18:28:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:28:43,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-27 18:28:43,853 INFO L175 Difference]: Start difference. First operand has 184 places, 179 transitions, 1750 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:28:43,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 215 transitions, 2438 flow [2024-06-27 18:28:44,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 215 transitions, 2247 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:44,024 INFO L231 Difference]: Finished difference. Result has 186 places, 181 transitions, 1710 flow [2024-06-27 18:28:44,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1710, PETRI_PLACES=186, PETRI_TRANSITIONS=181} [2024-06-27 18:28:44,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 143 predicate places. [2024-06-27 18:28:44,025 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 181 transitions, 1710 flow [2024-06-27 18:28:44,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:44,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:44,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:44,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:28:44,026 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:44,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2070374241, now seen corresponding path program 5 times [2024-06-27 18:28:44,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:44,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786137258] [2024-06-27 18:28:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:44,623 INFO 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 18:28:44,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786137258] [2024-06-27 18:28:44,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786137258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:44,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:44,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047779558] [2024-06-27 18:28:44,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:44,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:44,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:44,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:44,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:44,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:44,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 181 transitions, 1710 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:44,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:44,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:44,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:45,182 INFO L124 PetriNetUnfolderBase]: 1180/2308 cut-off events. [2024-06-27 18:28:45,182 INFO L125 PetriNetUnfolderBase]: For 61732/61752 co-relation queries the response was YES. [2024-06-27 18:28:45,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11817 conditions, 2308 events. 1180/2308 cut-off events. For 61732/61752 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14877 event pairs, 233 based on Foata normal form. 21/2241 useless extension candidates. Maximal degree in co-relation 11733. Up to 1585 conditions per place. [2024-06-27 18:28:45,199 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 146 selfloop transitions, 37 changer transitions 0/214 dead transitions. [2024-06-27 18:28:45,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 214 transitions, 2216 flow [2024-06-27 18:28:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:28:45,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2024-06-27 18:28:45,200 INFO L175 Difference]: Start difference. First operand has 186 places, 181 transitions, 1710 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:28:45,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 214 transitions, 2216 flow [2024-06-27 18:28:45,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 214 transitions, 2019 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:45,313 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 1592 flow [2024-06-27 18:28:45,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1592, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2024-06-27 18:28:45,314 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-27 18:28:45,314 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 1592 flow [2024-06-27 18:28:45,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:45,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:45,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:45,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:28:45,315 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:45,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2015987657, now seen corresponding path program 9 times [2024-06-27 18:28:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:45,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261369348] [2024-06-27 18:28:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:45,973 INFO 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 18:28:45,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:45,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261369348] [2024-06-27 18:28:45,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261369348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:45,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:45,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:45,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767793194] [2024-06-27 18:28:45,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:45,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:45,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:45,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:45,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:46,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:46,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 1592 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:46,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:46,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:46,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:46,557 INFO L124 PetriNetUnfolderBase]: 1289/2432 cut-off events. [2024-06-27 18:28:46,557 INFO L125 PetriNetUnfolderBase]: For 65130/65136 co-relation queries the response was YES. [2024-06-27 18:28:46,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12463 conditions, 2432 events. 1289/2432 cut-off events. For 65130/65136 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15276 event pairs, 248 based on Foata normal form. 4/2353 useless extension candidates. Maximal degree in co-relation 12378. Up to 1431 conditions per place. [2024-06-27 18:28:46,576 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 145 selfloop transitions, 66 changer transitions 0/219 dead transitions. [2024-06-27 18:28:46,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 219 transitions, 2300 flow [2024-06-27 18:28:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:28:46,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2024-06-27 18:28:46,578 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 1592 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:28:46,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 219 transitions, 2300 flow [2024-06-27 18:28:46,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 219 transitions, 2188 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:46,733 INFO L231 Difference]: Finished difference. Result has 187 places, 183 transitions, 1649 flow [2024-06-27 18:28:46,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1649, PETRI_PLACES=187, PETRI_TRANSITIONS=183} [2024-06-27 18:28:46,733 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-27 18:28:46,733 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 183 transitions, 1649 flow [2024-06-27 18:28:46,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:46,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:46,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:46,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:28:46,734 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:46,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2070364600, now seen corresponding path program 10 times [2024-06-27 18:28:46,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:46,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137663828] [2024-06-27 18:28:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:47,427 INFO 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 18:28:47,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:47,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137663828] [2024-06-27 18:28:47,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137663828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:47,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:47,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:47,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267860854] [2024-06-27 18:28:47,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:47,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:47,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:47,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:47,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 183 transitions, 1649 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:47,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:47,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:47,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:47,969 INFO L124 PetriNetUnfolderBase]: 1287/2444 cut-off events. [2024-06-27 18:28:47,970 INFO L125 PetriNetUnfolderBase]: For 64420/64426 co-relation queries the response was YES. [2024-06-27 18:28:47,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12597 conditions, 2444 events. 1287/2444 cut-off events. For 64420/64426 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15476 event pairs, 236 based on Foata normal form. 3/2358 useless extension candidates. Maximal degree in co-relation 12511. Up to 1663 conditions per place. [2024-06-27 18:28:47,989 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 150 selfloop transitions, 58 changer transitions 0/216 dead transitions. [2024-06-27 18:28:47,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 216 transitions, 2205 flow [2024-06-27 18:28:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:28:47,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2024-06-27 18:28:47,990 INFO L175 Difference]: Start difference. First operand has 187 places, 183 transitions, 1649 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:28:47,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 216 transitions, 2205 flow [2024-06-27 18:28:48,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 216 transitions, 2050 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:28:48,154 INFO L231 Difference]: Finished difference. Result has 190 places, 183 transitions, 1615 flow [2024-06-27 18:28:48,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1615, PETRI_PLACES=190, PETRI_TRANSITIONS=183} [2024-06-27 18:28:48,154 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-27 18:28:48,155 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 183 transitions, 1615 flow [2024-06-27 18:28:48,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:48,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:48,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:48,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:28:48,155 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:48,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2015728187, now seen corresponding path program 10 times [2024-06-27 18:28:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464950115] [2024-06-27 18:28:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:48,814 INFO 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 18:28:48,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:48,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464950115] [2024-06-27 18:28:48,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464950115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:48,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:48,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:48,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742128485] [2024-06-27 18:28:48,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:48,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:48,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:48,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:48,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:48,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:48,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 183 transitions, 1615 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:48,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:48,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:48,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:49,313 INFO L124 PetriNetUnfolderBase]: 1283/2423 cut-off events. [2024-06-27 18:28:49,313 INFO L125 PetriNetUnfolderBase]: For 64082/64088 co-relation queries the response was YES. [2024-06-27 18:28:49,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12284 conditions, 2423 events. 1283/2423 cut-off events. For 64082/64088 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15240 event pairs, 247 based on Foata normal form. 4/2344 useless extension candidates. Maximal degree in co-relation 12197. Up to 1425 conditions per place. [2024-06-27 18:28:49,334 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 145 selfloop transitions, 65 changer transitions 0/218 dead transitions. [2024-06-27 18:28:49,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 218 transitions, 2179 flow [2024-06-27 18:28:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:28:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:28:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:28:49,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2024-06-27 18:28:49,338 INFO L175 Difference]: Start difference. First operand has 190 places, 183 transitions, 1615 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:28:49,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 218 transitions, 2179 flow [2024-06-27 18:28:49,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 218 transitions, 2015 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:49,491 INFO L231 Difference]: Finished difference. Result has 190 places, 183 transitions, 1586 flow [2024-06-27 18:28:49,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1586, PETRI_PLACES=190, PETRI_TRANSITIONS=183} [2024-06-27 18:28:49,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-27 18:28:49,492 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 183 transitions, 1586 flow [2024-06-27 18:28:49,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:49,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:49,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:49,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:28:49,493 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:49,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1170834233, now seen corresponding path program 1 times [2024-06-27 18:28:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:49,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718230060] [2024-06-27 18:28:49,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:50,314 INFO 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 18:28:50,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718230060] [2024-06-27 18:28:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718230060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:50,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:50,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529052642] [2024-06-27 18:28:50,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:50,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:50,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:50,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:50,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:50,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:28:50,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 183 transitions, 1586 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:50,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:50,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:28:50,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:50,889 INFO L124 PetriNetUnfolderBase]: 1189/2311 cut-off events. [2024-06-27 18:28:50,889 INFO L125 PetriNetUnfolderBase]: For 62721/62737 co-relation queries the response was YES. [2024-06-27 18:28:50,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11473 conditions, 2311 events. 1189/2311 cut-off events. For 62721/62737 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15063 event pairs, 259 based on Foata normal form. 16/2240 useless extension candidates. Maximal degree in co-relation 11385. Up to 1749 conditions per place. [2024-06-27 18:28:50,908 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 174 selfloop transitions, 16 changer transitions 0/221 dead transitions. [2024-06-27 18:28:50,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 221 transitions, 2130 flow [2024-06-27 18:28:50,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:28:50,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 18:28:50,909 INFO L175 Difference]: Start difference. First operand has 190 places, 183 transitions, 1586 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:28:50,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 221 transitions, 2130 flow [2024-06-27 18:28:51,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 221 transitions, 1941 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:28:51,050 INFO L231 Difference]: Finished difference. Result has 190 places, 184 transitions, 1447 flow [2024-06-27 18:28:51,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1447, PETRI_PLACES=190, PETRI_TRANSITIONS=184} [2024-06-27 18:28:51,052 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-27 18:28:51,052 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 184 transitions, 1447 flow [2024-06-27 18:28:51,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:51,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:51,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:28:51,053 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:51,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash 502722450, now seen corresponding path program 1 times [2024-06-27 18:28:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:51,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682065519] [2024-06-27 18:28:51,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:51,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:51,187 INFO 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 18:28:51,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:51,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682065519] [2024-06-27 18:28:51,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682065519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:51,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:51,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:28:51,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011700795] [2024-06-27 18:28:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:51,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:28:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:28:51,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:28:51,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-06-27 18:28:51,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 184 transitions, 1447 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:51,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:51,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-06-27 18:28:51,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:51,669 INFO L124 PetriNetUnfolderBase]: 1532/2857 cut-off events. [2024-06-27 18:28:51,670 INFO L125 PetriNetUnfolderBase]: For 52247/52436 co-relation queries the response was YES. [2024-06-27 18:28:51,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12913 conditions, 2857 events. 1532/2857 cut-off events. For 52247/52436 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 18886 event pairs, 259 based on Foata normal form. 25/2742 useless extension candidates. Maximal degree in co-relation 12825. Up to 1415 conditions per place. [2024-06-27 18:28:51,689 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 152 selfloop transitions, 28 changer transitions 152/402 dead transitions. [2024-06-27 18:28:51,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 402 transitions, 3545 flow [2024-06-27 18:28:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:28:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:28:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:28:51,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217948717948718 [2024-06-27 18:28:51,690 INFO L175 Difference]: Start difference. First operand has 190 places, 184 transitions, 1447 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:28:51,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 402 transitions, 3545 flow [2024-06-27 18:28:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 402 transitions, 3489 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:51,826 INFO L231 Difference]: Finished difference. Result has 195 places, 189 transitions, 1582 flow [2024-06-27 18:28:51,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1582, PETRI_PLACES=195, PETRI_TRANSITIONS=189} [2024-06-27 18:28:51,826 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-27 18:28:51,827 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 189 transitions, 1582 flow [2024-06-27 18:28:51,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:51,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:51,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:51,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:28:51,827 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:51,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2092163507, now seen corresponding path program 1 times [2024-06-27 18:28:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536902010] [2024-06-27 18:28:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:51,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:52,764 INFO 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 18:28:52,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:52,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536902010] [2024-06-27 18:28:52,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536902010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:52,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:52,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:28:52,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747011887] [2024-06-27 18:28:52,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:52,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:28:52,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:52,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:28:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:28:52,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:52,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 189 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:52,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:52,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:52,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:53,361 INFO L124 PetriNetUnfolderBase]: 1376/2592 cut-off events. [2024-06-27 18:28:53,362 INFO L125 PetriNetUnfolderBase]: For 66330/66349 co-relation queries the response was YES. [2024-06-27 18:28:53,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13696 conditions, 2592 events. 1376/2592 cut-off events. For 66330/66349 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16594 event pairs, 319 based on Foata normal form. 14/2580 useless extension candidates. Maximal degree in co-relation 13602. Up to 2038 conditions per place. [2024-06-27 18:28:53,383 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 195 selfloop transitions, 54 changer transitions 5/263 dead transitions. [2024-06-27 18:28:53,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 263 transitions, 2656 flow [2024-06-27 18:28:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:28:53,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2024-06-27 18:28:53,384 INFO L175 Difference]: Start difference. First operand has 195 places, 189 transitions, 1582 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:28:53,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 263 transitions, 2656 flow [2024-06-27 18:28:53,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 263 transitions, 2638 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:53,578 INFO L231 Difference]: Finished difference. Result has 207 places, 220 transitions, 2149 flow [2024-06-27 18:28:53,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2149, PETRI_PLACES=207, PETRI_TRANSITIONS=220} [2024-06-27 18:28:53,579 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 164 predicate places. [2024-06-27 18:28:53,579 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 220 transitions, 2149 flow [2024-06-27 18:28:53,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:53,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:53,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:53,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:28:53,579 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:53,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -166227183, now seen corresponding path program 2 times [2024-06-27 18:28:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:53,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590769600] [2024-06-27 18:28:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:53,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:54,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:54,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590769600] [2024-06-27 18:28:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590769600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:54,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:54,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996016069] [2024-06-27 18:28:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:54,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:54,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:54,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:54,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 220 transitions, 2149 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:54,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:54,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:54,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:55,179 INFO L124 PetriNetUnfolderBase]: 1399/2622 cut-off events. [2024-06-27 18:28:55,179 INFO L125 PetriNetUnfolderBase]: For 70546/70568 co-relation queries the response was YES. [2024-06-27 18:28:55,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14314 conditions, 2622 events. 1399/2622 cut-off events. For 70546/70568 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16699 event pairs, 286 based on Foata normal form. 15/2615 useless extension candidates. Maximal degree in co-relation 14211. Up to 2079 conditions per place. [2024-06-27 18:28:55,200 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 209 selfloop transitions, 66 changer transitions 0/284 dead transitions. [2024-06-27 18:28:55,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 284 transitions, 3110 flow [2024-06-27 18:28:55,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:28:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:28:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 215 transitions. [2024-06-27 18:28:55,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594017094017094 [2024-06-27 18:28:55,202 INFO L175 Difference]: Start difference. First operand has 207 places, 220 transitions, 2149 flow. Second operand 12 states and 215 transitions. [2024-06-27 18:28:55,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 284 transitions, 3110 flow [2024-06-27 18:28:55,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 284 transitions, 2894 flow, removed 79 selfloop flow, removed 2 redundant places. [2024-06-27 18:28:55,373 INFO L231 Difference]: Finished difference. Result has 219 places, 239 transitions, 2378 flow [2024-06-27 18:28:55,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2378, PETRI_PLACES=219, PETRI_TRANSITIONS=239} [2024-06-27 18:28:55,373 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-27 18:28:55,373 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 239 transitions, 2378 flow [2024-06-27 18:28:55,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:55,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:55,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:55,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:28:55,374 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:55,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:55,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1753947111, now seen corresponding path program 1 times [2024-06-27 18:28:55,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:55,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314228475] [2024-06-27 18:28:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:55,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:56,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314228475] [2024-06-27 18:28:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314228475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811347241] [2024-06-27 18:28:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:56,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:56,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:56,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:56,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 239 transitions, 2378 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:56,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:56,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:56,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:56,815 INFO L124 PetriNetUnfolderBase]: 1408/2624 cut-off events. [2024-06-27 18:28:56,816 INFO L125 PetriNetUnfolderBase]: For 73274/73297 co-relation queries the response was YES. [2024-06-27 18:28:56,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14126 conditions, 2624 events. 1408/2624 cut-off events. For 73274/73297 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16686 event pairs, 281 based on Foata normal form. 15/2615 useless extension candidates. Maximal degree in co-relation 14018. Up to 2044 conditions per place. [2024-06-27 18:28:56,839 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 225 selfloop transitions, 49 changer transitions 0/283 dead transitions. [2024-06-27 18:28:56,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 283 transitions, 3126 flow [2024-06-27 18:28:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:28:56,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 18:28:56,842 INFO L175 Difference]: Start difference. First operand has 219 places, 239 transitions, 2378 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:28:56,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 283 transitions, 3126 flow [2024-06-27 18:28:57,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 283 transitions, 2974 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:57,087 INFO L231 Difference]: Finished difference. Result has 222 places, 241 transitions, 2365 flow [2024-06-27 18:28:57,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2365, PETRI_PLACES=222, PETRI_TRANSITIONS=241} [2024-06-27 18:28:57,088 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 179 predicate places. [2024-06-27 18:28:57,089 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 241 transitions, 2365 flow [2024-06-27 18:28:57,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:57,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:57,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:57,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:28:57,090 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:57,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:57,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1608923531, now seen corresponding path program 1 times [2024-06-27 18:28:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:57,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651573921] [2024-06-27 18:28:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:57,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:57,835 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 18:28:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651573921] [2024-06-27 18:28:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651573921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:57,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:57,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909430277] [2024-06-27 18:28:57,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:57,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:57,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:57,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:57,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:57,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 241 transitions, 2365 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:57,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:57,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:57,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:58,555 INFO L124 PetriNetUnfolderBase]: 1431/2676 cut-off events. [2024-06-27 18:28:58,555 INFO L125 PetriNetUnfolderBase]: For 74090/74128 co-relation queries the response was YES. [2024-06-27 18:28:58,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14429 conditions, 2676 events. 1431/2676 cut-off events. For 74090/74128 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 17075 event pairs, 299 based on Foata normal form. 19/2670 useless extension candidates. Maximal degree in co-relation 14320. Up to 2184 conditions per place. [2024-06-27 18:28:58,579 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 236 selfloop transitions, 35 changer transitions 0/280 dead transitions. [2024-06-27 18:28:58,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 280 transitions, 3093 flow [2024-06-27 18:28:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:28:58,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2024-06-27 18:28:58,581 INFO L175 Difference]: Start difference. First operand has 222 places, 241 transitions, 2365 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:28:58,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 280 transitions, 3093 flow [2024-06-27 18:28:58,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 280 transitions, 2972 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:58,817 INFO L231 Difference]: Finished difference. Result has 224 places, 243 transitions, 2357 flow [2024-06-27 18:28:58,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2357, PETRI_PLACES=224, PETRI_TRANSITIONS=243} [2024-06-27 18:28:58,817 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 181 predicate places. [2024-06-27 18:28:58,818 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 243 transitions, 2357 flow [2024-06-27 18:28:58,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:58,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:58,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:58,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:28:58,818 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:58,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash -750643957, now seen corresponding path program 2 times [2024-06-27 18:28:58,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:58,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835073947] [2024-06-27 18:28:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:58,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:59,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:59,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835073947] [2024-06-27 18:28:59,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835073947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:59,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:59,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:59,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504131172] [2024-06-27 18:28:59,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:59,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:59,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:59,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:59,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:59,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:28:59,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 243 transitions, 2357 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:59,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:59,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:28:59,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:00,229 INFO L124 PetriNetUnfolderBase]: 1469/2719 cut-off events. [2024-06-27 18:29:00,230 INFO L125 PetriNetUnfolderBase]: For 82429/82466 co-relation queries the response was YES. [2024-06-27 18:29:00,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14852 conditions, 2719 events. 1469/2719 cut-off events. For 82429/82466 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17297 event pairs, 272 based on Foata normal form. 19/2712 useless extension candidates. Maximal degree in co-relation 14742. Up to 1963 conditions per place. [2024-06-27 18:29:00,253 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 221 selfloop transitions, 59 changer transitions 0/289 dead transitions. [2024-06-27 18:29:00,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 289 transitions, 3275 flow [2024-06-27 18:29:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:29:00,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:29:00,255 INFO L175 Difference]: Start difference. First operand has 224 places, 243 transitions, 2357 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:29:00,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 289 transitions, 3275 flow [2024-06-27 18:29:00,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 289 transitions, 3184 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:00,515 INFO L231 Difference]: Finished difference. Result has 226 places, 247 transitions, 2465 flow [2024-06-27 18:29:00,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2465, PETRI_PLACES=226, PETRI_TRANSITIONS=247} [2024-06-27 18:29:00,516 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2024-06-27 18:29:00,516 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 247 transitions, 2465 flow [2024-06-27 18:29:00,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:00,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:00,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:00,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:29:00,516 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:00,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1611694873, now seen corresponding path program 3 times [2024-06-27 18:29:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:00,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455208540] [2024-06-27 18:29:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:00,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:01,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:01,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455208540] [2024-06-27 18:29:01,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455208540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:01,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:01,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:01,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627995649] [2024-06-27 18:29:01,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:01,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:01,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:01,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:01,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:01,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:01,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 247 transitions, 2465 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:01,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:01,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:01,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:01,873 INFO L124 PetriNetUnfolderBase]: 1491/2768 cut-off events. [2024-06-27 18:29:01,873 INFO L125 PetriNetUnfolderBase]: For 86013/86056 co-relation queries the response was YES. [2024-06-27 18:29:01,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15323 conditions, 2768 events. 1491/2768 cut-off events. For 86013/86056 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 17748 event pairs, 301 based on Foata normal form. 21/2761 useless extension candidates. Maximal degree in co-relation 15212. Up to 1981 conditions per place. [2024-06-27 18:29:01,896 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 225 selfloop transitions, 57 changer transitions 0/291 dead transitions. [2024-06-27 18:29:01,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 291 transitions, 3357 flow [2024-06-27 18:29:01,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:29:01,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-27 18:29:01,898 INFO L175 Difference]: Start difference. First operand has 226 places, 247 transitions, 2465 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:29:01,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 291 transitions, 3357 flow [2024-06-27 18:29:02,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 291 transitions, 3247 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:02,194 INFO L231 Difference]: Finished difference. Result has 230 places, 249 transitions, 2514 flow [2024-06-27 18:29:02,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2514, PETRI_PLACES=230, PETRI_TRANSITIONS=249} [2024-06-27 18:29:02,194 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-27 18:29:02,194 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 249 transitions, 2514 flow [2024-06-27 18:29:02,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:02,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:02,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:02,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:29:02,195 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:02,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1611925513, now seen corresponding path program 4 times [2024-06-27 18:29:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:02,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950845316] [2024-06-27 18:29:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:02,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:02,828 INFO 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 18:29:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950845316] [2024-06-27 18:29:02,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950845316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:02,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:02,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:02,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226855137] [2024-06-27 18:29:02,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:02,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:02,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:02,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:02,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:02,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 249 transitions, 2514 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:02,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:02,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:02,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:03,515 INFO L124 PetriNetUnfolderBase]: 1487/2747 cut-off events. [2024-06-27 18:29:03,515 INFO L125 PetriNetUnfolderBase]: For 83529/83572 co-relation queries the response was YES. [2024-06-27 18:29:03,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15192 conditions, 2747 events. 1487/2747 cut-off events. For 83529/83572 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 17519 event pairs, 272 based on Foata normal form. 23/2744 useless extension candidates. Maximal degree in co-relation 15079. Up to 1978 conditions per place. [2024-06-27 18:29:03,538 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 222 selfloop transitions, 59 changer transitions 0/290 dead transitions. [2024-06-27 18:29:03,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 290 transitions, 3236 flow [2024-06-27 18:29:03,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:29:03,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:29:03,540 INFO L175 Difference]: Start difference. First operand has 230 places, 249 transitions, 2514 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:29:03,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 290 transitions, 3236 flow [2024-06-27 18:29:03,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 290 transitions, 3083 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:03,821 INFO L231 Difference]: Finished difference. Result has 233 places, 249 transitions, 2484 flow [2024-06-27 18:29:03,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2484, PETRI_PLACES=233, PETRI_TRANSITIONS=249} [2024-06-27 18:29:03,822 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-27 18:29:03,822 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 249 transitions, 2484 flow [2024-06-27 18:29:03,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:03,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:03,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:03,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:29:03,823 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:03,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1603347499, now seen corresponding path program 5 times [2024-06-27 18:29:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:03,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819130491] [2024-06-27 18:29:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:03,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:04,445 INFO 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 18:29:04,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:04,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819130491] [2024-06-27 18:29:04,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819130491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:04,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:04,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933645832] [2024-06-27 18:29:04,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:04,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:04,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:04,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:04,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 249 transitions, 2484 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:04,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:04,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:04,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:05,236 INFO L124 PetriNetUnfolderBase]: 1535/2858 cut-off events. [2024-06-27 18:29:05,237 INFO L125 PetriNetUnfolderBase]: For 90762/90806 co-relation queries the response was YES. [2024-06-27 18:29:05,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15772 conditions, 2858 events. 1535/2858 cut-off events. For 90762/90806 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18469 event pairs, 320 based on Foata normal form. 22/2852 useless extension candidates. Maximal degree in co-relation 15658. Up to 1781 conditions per place. [2024-06-27 18:29:05,259 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 213 selfloop transitions, 71 changer transitions 0/293 dead transitions. [2024-06-27 18:29:05,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 293 transitions, 3412 flow [2024-06-27 18:29:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 18:29:05,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49743589743589745 [2024-06-27 18:29:05,260 INFO L175 Difference]: Start difference. First operand has 233 places, 249 transitions, 2484 flow. Second operand 10 states and 194 transitions. [2024-06-27 18:29:05,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 293 transitions, 3412 flow [2024-06-27 18:29:05,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 293 transitions, 3275 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:29:05,515 INFO L231 Difference]: Finished difference. Result has 233 places, 253 transitions, 2578 flow [2024-06-27 18:29:05,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2347, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2578, PETRI_PLACES=233, PETRI_TRANSITIONS=253} [2024-06-27 18:29:05,516 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-27 18:29:05,516 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 253 transitions, 2578 flow [2024-06-27 18:29:05,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:05,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:05,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:05,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:29:05,516 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:05,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1603116859, now seen corresponding path program 6 times [2024-06-27 18:29:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854475796] [2024-06-27 18:29:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:06,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:06,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854475796] [2024-06-27 18:29:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854475796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:06,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:06,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:06,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083379638] [2024-06-27 18:29:06,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:06,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:06,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:06,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 253 transitions, 2578 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:06,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:06,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:06,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:06,849 INFO L124 PetriNetUnfolderBase]: 1583/2956 cut-off events. [2024-06-27 18:29:06,849 INFO L125 PetriNetUnfolderBase]: For 99772/99813 co-relation queries the response was YES. [2024-06-27 18:29:06,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16642 conditions, 2956 events. 1583/2956 cut-off events. For 99772/99813 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 19349 event pairs, 315 based on Foata normal form. 22/2951 useless extension candidates. Maximal degree in co-relation 16527. Up to 1820 conditions per place. [2024-06-27 18:29:06,875 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 218 selfloop transitions, 72 changer transitions 0/299 dead transitions. [2024-06-27 18:29:06,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 299 transitions, 3666 flow [2024-06-27 18:29:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 18:29:06,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-27 18:29:06,876 INFO L175 Difference]: Start difference. First operand has 233 places, 253 transitions, 2578 flow. Second operand 10 states and 198 transitions. [2024-06-27 18:29:06,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 299 transitions, 3666 flow [2024-06-27 18:29:07,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 299 transitions, 3486 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:07,266 INFO L231 Difference]: Finished difference. Result has 236 places, 257 transitions, 2635 flow [2024-06-27 18:29:07,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2635, PETRI_PLACES=236, PETRI_TRANSITIONS=257} [2024-06-27 18:29:07,267 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-06-27 18:29:07,267 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 257 transitions, 2635 flow [2024-06-27 18:29:07,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:07,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:07,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:07,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:29:07,267 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:07,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1603108489, now seen corresponding path program 7 times [2024-06-27 18:29:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:07,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756976387] [2024-06-27 18:29:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:07,885 INFO 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 18:29:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:07,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756976387] [2024-06-27 18:29:07,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756976387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:07,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:07,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582124705] [2024-06-27 18:29:07,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:07,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:07,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:07,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:07,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 257 transitions, 2635 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:07,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:07,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:07,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:08,626 INFO L124 PetriNetUnfolderBase]: 1579/2926 cut-off events. [2024-06-27 18:29:08,626 INFO L125 PetriNetUnfolderBase]: For 96155/96205 co-relation queries the response was YES. [2024-06-27 18:29:08,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16273 conditions, 2926 events. 1579/2926 cut-off events. For 96155/96205 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 18998 event pairs, 320 based on Foata normal form. 26/2924 useless extension candidates. Maximal degree in co-relation 16157. Up to 1817 conditions per place. [2024-06-27 18:29:08,653 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 216 selfloop transitions, 73 changer transitions 0/298 dead transitions. [2024-06-27 18:29:08,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 298 transitions, 3501 flow [2024-06-27 18:29:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 18:29:08,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-27 18:29:08,654 INFO L175 Difference]: Start difference. First operand has 236 places, 257 transitions, 2635 flow. Second operand 10 states and 196 transitions. [2024-06-27 18:29:08,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 298 transitions, 3501 flow [2024-06-27 18:29:08,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 298 transitions, 3327 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:08,988 INFO L231 Difference]: Finished difference. Result has 240 places, 257 transitions, 2612 flow [2024-06-27 18:29:08,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2612, PETRI_PLACES=240, PETRI_TRANSITIONS=257} [2024-06-27 18:29:08,990 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2024-06-27 18:29:08,990 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 257 transitions, 2612 flow [2024-06-27 18:29:08,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:08,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:08,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:08,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:29:08,991 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:08,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:08,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1603108179, now seen corresponding path program 2 times [2024-06-27 18:29:08,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:08,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883665824] [2024-06-27 18:29:08,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:08,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:09,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:09,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883665824] [2024-06-27 18:29:09,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883665824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:09,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372400081] [2024-06-27 18:29:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:09,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:09,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:09,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:09,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:09,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 257 transitions, 2612 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:09,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:09,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:09,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:10,429 INFO L124 PetriNetUnfolderBase]: 1617/3004 cut-off events. [2024-06-27 18:29:10,429 INFO L125 PetriNetUnfolderBase]: For 100274/100345 co-relation queries the response was YES. [2024-06-27 18:29:10,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16763 conditions, 3004 events. 1617/3004 cut-off events. For 100274/100345 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 19602 event pairs, 336 based on Foata normal form. 36/3006 useless extension candidates. Maximal degree in co-relation 16646. Up to 2332 conditions per place. [2024-06-27 18:29:10,465 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 243 selfloop transitions, 46 changer transitions 0/298 dead transitions. [2024-06-27 18:29:10,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 298 transitions, 3548 flow [2024-06-27 18:29:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:29:10,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794871794871795 [2024-06-27 18:29:10,466 INFO L175 Difference]: Start difference. First operand has 240 places, 257 transitions, 2612 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:29:10,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 298 transitions, 3548 flow [2024-06-27 18:29:10,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 298 transitions, 3397 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:10,821 INFO L231 Difference]: Finished difference. Result has 241 places, 261 transitions, 2638 flow [2024-06-27 18:29:10,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2638, PETRI_PLACES=241, PETRI_TRANSITIONS=261} [2024-06-27 18:29:10,822 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 198 predicate places. [2024-06-27 18:29:10,822 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 261 transitions, 2638 flow [2024-06-27 18:29:10,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:10,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:10,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:10,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:29:10,822 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:10,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1594776619, now seen corresponding path program 8 times [2024-06-27 18:29:10,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:10,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650192553] [2024-06-27 18:29:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:10,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:11,533 INFO 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 18:29:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650192553] [2024-06-27 18:29:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650192553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441078388] [2024-06-27 18:29:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:11,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:11,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:11,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:11,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 261 transitions, 2638 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:11,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:11,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:11,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:12,279 INFO L124 PetriNetUnfolderBase]: 1629/2986 cut-off events. [2024-06-27 18:29:12,280 INFO L125 PetriNetUnfolderBase]: For 105536/105618 co-relation queries the response was YES. [2024-06-27 18:29:12,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16715 conditions, 2986 events. 1629/2986 cut-off events. For 105536/105618 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19255 event pairs, 260 based on Foata normal form. 46/3002 useless extension candidates. Maximal degree in co-relation 16597. Up to 1876 conditions per place. [2024-06-27 18:29:12,306 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 209 selfloop transitions, 85 changer transitions 0/303 dead transitions. [2024-06-27 18:29:12,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 303 transitions, 3552 flow [2024-06-27 18:29:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:29:12,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-27 18:29:12,307 INFO L175 Difference]: Start difference. First operand has 241 places, 261 transitions, 2638 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:29:12,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 303 transitions, 3552 flow [2024-06-27 18:29:12,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 303 transitions, 3472 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:12,724 INFO L231 Difference]: Finished difference. Result has 245 places, 263 transitions, 2771 flow [2024-06-27 18:29:12,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2558, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2771, PETRI_PLACES=245, PETRI_TRANSITIONS=263} [2024-06-27 18:29:12,724 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 202 predicate places. [2024-06-27 18:29:12,724 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 263 transitions, 2771 flow [2024-06-27 18:29:12,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:12,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:12,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:12,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:29:12,725 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:12,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1594766079, now seen corresponding path program 3 times [2024-06-27 18:29:12,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:12,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146813045] [2024-06-27 18:29:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:12,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:13,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146813045] [2024-06-27 18:29:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146813045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:13,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:13,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:13,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281924938] [2024-06-27 18:29:13,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:13,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:13,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:13,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:13,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 263 transitions, 2771 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:13,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:13,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:13,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:14,217 INFO L124 PetriNetUnfolderBase]: 1652/3063 cut-off events. [2024-06-27 18:29:14,217 INFO L125 PetriNetUnfolderBase]: For 106807/106883 co-relation queries the response was YES. [2024-06-27 18:29:14,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17500 conditions, 3063 events. 1652/3063 cut-off events. For 106807/106883 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 19996 event pairs, 331 based on Foata normal form. 40/3067 useless extension candidates. Maximal degree in co-relation 17380. Up to 2380 conditions per place. [2024-06-27 18:29:14,248 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 238 selfloop transitions, 54 changer transitions 0/301 dead transitions. [2024-06-27 18:29:14,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 301 transitions, 3677 flow [2024-06-27 18:29:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:29:14,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-27 18:29:14,249 INFO L175 Difference]: Start difference. First operand has 245 places, 263 transitions, 2771 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:29:14,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 301 transitions, 3677 flow [2024-06-27 18:29:14,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 301 transitions, 3513 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:14,690 INFO L231 Difference]: Finished difference. Result has 248 places, 265 transitions, 2760 flow [2024-06-27 18:29:14,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2760, PETRI_PLACES=248, PETRI_TRANSITIONS=265} [2024-06-27 18:29:14,691 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-27 18:29:14,691 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 265 transitions, 2760 flow [2024-06-27 18:29:14,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:14,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:14,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:14,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:29:14,692 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:14,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1594776309, now seen corresponding path program 4 times [2024-06-27 18:29:14,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:14,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457092429] [2024-06-27 18:29:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:15,281 INFO 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 18:29:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457092429] [2024-06-27 18:29:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457092429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:15,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:15,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:15,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446378876] [2024-06-27 18:29:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:15,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:15,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:15,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:15,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 265 transitions, 2760 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:15,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:15,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:15,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:16,127 INFO L124 PetriNetUnfolderBase]: 1665/3070 cut-off events. [2024-06-27 18:29:16,127 INFO L125 PetriNetUnfolderBase]: For 108866/108948 co-relation queries the response was YES. [2024-06-27 18:29:16,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17457 conditions, 3070 events. 1665/3070 cut-off events. For 108866/108948 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 19990 event pairs, 334 based on Foata normal form. 39/3068 useless extension candidates. Maximal degree in co-relation 17336. Up to 2394 conditions per place. [2024-06-27 18:29:16,156 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 241 selfloop transitions, 53 changer transitions 0/303 dead transitions. [2024-06-27 18:29:16,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 303 transitions, 3676 flow [2024-06-27 18:29:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:16,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:29:16,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4717948717948718 [2024-06-27 18:29:16,158 INFO L175 Difference]: Start difference. First operand has 248 places, 265 transitions, 2760 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:29:16,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 303 transitions, 3676 flow [2024-06-27 18:29:16,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 303 transitions, 3548 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:16,566 INFO L231 Difference]: Finished difference. Result has 251 places, 267 transitions, 2787 flow [2024-06-27 18:29:16,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2638, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2787, PETRI_PLACES=251, PETRI_TRANSITIONS=267} [2024-06-27 18:29:16,566 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 208 predicate places. [2024-06-27 18:29:16,566 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 267 transitions, 2787 flow [2024-06-27 18:29:16,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:16,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:16,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:16,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:29:16,567 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:16,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:16,567 INFO L85 PathProgramCache]: Analyzing trace with hash -520955347, now seen corresponding path program 9 times [2024-06-27 18:29:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:16,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826911321] [2024-06-27 18:29:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:16,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:17,264 INFO 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 18:29:17,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826911321] [2024-06-27 18:29:17,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826911321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:17,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:17,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:17,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935391529] [2024-06-27 18:29:17,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:17,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:17,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:17,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 267 transitions, 2787 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:17,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:17,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:17,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:18,170 INFO L124 PetriNetUnfolderBase]: 1677/3090 cut-off events. [2024-06-27 18:29:18,171 INFO L125 PetriNetUnfolderBase]: For 113732/113812 co-relation queries the response was YES. [2024-06-27 18:29:18,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17468 conditions, 3090 events. 1677/3090 cut-off events. For 113732/113812 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20169 event pairs, 282 based on Foata normal form. 36/3094 useless extension candidates. Maximal degree in co-relation 17346. Up to 1932 conditions per place. [2024-06-27 18:29:18,202 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 221 selfloop transitions, 80 changer transitions 0/310 dead transitions. [2024-06-27 18:29:18,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 310 transitions, 3725 flow [2024-06-27 18:29:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:18,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 18:29:18,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:29:18,204 INFO L175 Difference]: Start difference. First operand has 251 places, 267 transitions, 2787 flow. Second operand 10 states and 195 transitions. [2024-06-27 18:29:18,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 310 transitions, 3725 flow [2024-06-27 18:29:18,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 310 transitions, 3616 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:18,705 INFO L231 Difference]: Finished difference. Result has 254 places, 269 transitions, 2881 flow [2024-06-27 18:29:18,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2881, PETRI_PLACES=254, PETRI_TRANSITIONS=269} [2024-06-27 18:29:18,705 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-27 18:29:18,706 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 269 transitions, 2881 flow [2024-06-27 18:29:18,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:18,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:18,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:18,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:29:18,706 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:18,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash -520656135, now seen corresponding path program 1 times [2024-06-27 18:29:18,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:18,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577427648] [2024-06-27 18:29:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:19,520 INFO 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 18:29:19,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:19,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577427648] [2024-06-27 18:29:19,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577427648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:19,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:19,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:19,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768490938] [2024-06-27 18:29:19,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:19,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:19,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:19,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:19,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:29:19,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 269 transitions, 2881 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:19,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:19,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:29:19,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:20,338 INFO L124 PetriNetUnfolderBase]: 1597/2996 cut-off events. [2024-06-27 18:29:20,338 INFO L125 PetriNetUnfolderBase]: For 114408/114512 co-relation queries the response was YES. [2024-06-27 18:29:20,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17045 conditions, 2996 events. 1597/2996 cut-off events. For 114408/114512 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19920 event pairs, 354 based on Foata normal form. 67/3019 useless extension candidates. Maximal degree in co-relation 16922. Up to 2334 conditions per place. [2024-06-27 18:29:20,369 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 240 selfloop transitions, 25 changer transitions 0/306 dead transitions. [2024-06-27 18:29:20,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 306 transitions, 3577 flow [2024-06-27 18:29:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:29:20,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2024-06-27 18:29:20,370 INFO L175 Difference]: Start difference. First operand has 254 places, 269 transitions, 2881 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:29:20,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 306 transitions, 3577 flow [2024-06-27 18:29:20,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 306 transitions, 3354 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:20,876 INFO L231 Difference]: Finished difference. Result has 255 places, 271 transitions, 2743 flow [2024-06-27 18:29:20,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2743, PETRI_PLACES=255, PETRI_TRANSITIONS=271} [2024-06-27 18:29:20,877 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 212 predicate places. [2024-06-27 18:29:20,877 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 271 transitions, 2743 flow [2024-06-27 18:29:20,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:20,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:20,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:20,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:29:20,877 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:20,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash -520963717, now seen corresponding path program 10 times [2024-06-27 18:29:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:20,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633562829] [2024-06-27 18:29:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:21,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633562829] [2024-06-27 18:29:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633562829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:21,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:21,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423989625] [2024-06-27 18:29:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:21,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:21,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:21,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:21,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:21,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 271 transitions, 2743 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:21,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:21,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:21,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:22,326 INFO L124 PetriNetUnfolderBase]: 1684/3097 cut-off events. [2024-06-27 18:29:22,326 INFO L125 PetriNetUnfolderBase]: For 111735/111815 co-relation queries the response was YES. [2024-06-27 18:29:22,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17189 conditions, 3097 events. 1684/3097 cut-off events. For 111735/111815 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20259 event pairs, 282 based on Foata normal form. 36/3101 useless extension candidates. Maximal degree in co-relation 17065. Up to 1946 conditions per place. [2024-06-27 18:29:22,357 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 220 selfloop transitions, 81 changer transitions 0/310 dead transitions. [2024-06-27 18:29:22,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 310 transitions, 3493 flow [2024-06-27 18:29:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:29:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-27 18:29:22,358 INFO L175 Difference]: Start difference. First operand has 255 places, 271 transitions, 2743 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:29:22,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 310 transitions, 3493 flow [2024-06-27 18:29:22,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 310 transitions, 3400 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:22,776 INFO L231 Difference]: Finished difference. Result has 257 places, 271 transitions, 2817 flow [2024-06-27 18:29:22,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2817, PETRI_PLACES=257, PETRI_TRANSITIONS=271} [2024-06-27 18:29:22,777 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-06-27 18:29:22,777 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 271 transitions, 2817 flow [2024-06-27 18:29:22,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:22,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:22,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:22,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:29:22,778 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:22,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -520955037, now seen corresponding path program 5 times [2024-06-27 18:29:22,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:22,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132916319] [2024-06-27 18:29:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:22,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:23,509 INFO 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 18:29:23,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:23,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132916319] [2024-06-27 18:29:23,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132916319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:23,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:23,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:23,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525175212] [2024-06-27 18:29:23,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:23,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:23,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:23,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:23,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:23,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:23,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 271 transitions, 2817 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:23,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:23,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:23,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:24,274 INFO L124 PetriNetUnfolderBase]: 1692/3115 cut-off events. [2024-06-27 18:29:24,275 INFO L125 PetriNetUnfolderBase]: For 109547/109636 co-relation queries the response was YES. [2024-06-27 18:29:24,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17494 conditions, 3115 events. 1692/3115 cut-off events. For 109547/109636 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 20319 event pairs, 342 based on Foata normal form. 44/3117 useless extension candidates. Maximal degree in co-relation 17369. Up to 2437 conditions per place. [2024-06-27 18:29:24,305 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 247 selfloop transitions, 51 changer transitions 0/307 dead transitions. [2024-06-27 18:29:24,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 307 transitions, 3557 flow [2024-06-27 18:29:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:29:24,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 18:29:24,306 INFO L175 Difference]: Start difference. First operand has 257 places, 271 transitions, 2817 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:29:24,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 307 transitions, 3557 flow [2024-06-27 18:29:24,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 307 transitions, 3350 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 18:29:24,730 INFO L231 Difference]: Finished difference. Result has 257 places, 271 transitions, 2717 flow [2024-06-27 18:29:24,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2717, PETRI_PLACES=257, PETRI_TRANSITIONS=271} [2024-06-27 18:29:24,730 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-06-27 18:29:24,730 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 271 transitions, 2717 flow [2024-06-27 18:29:24,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:24,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:24,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:24,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:29:24,731 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:24,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2004151299, now seen corresponding path program 6 times [2024-06-27 18:29:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:24,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260708810] [2024-06-27 18:29:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:25,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:25,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260708810] [2024-06-27 18:29:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260708810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:25,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:25,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:25,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523691355] [2024-06-27 18:29:25,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:25,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:25,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:25,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:25,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 271 transitions, 2717 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:25,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:25,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:25,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:26,124 INFO L124 PetriNetUnfolderBase]: 1708/3121 cut-off events. [2024-06-27 18:29:26,124 INFO L125 PetriNetUnfolderBase]: For 117323/117409 co-relation queries the response was YES. [2024-06-27 18:29:26,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17690 conditions, 3121 events. 1708/3121 cut-off events. For 117323/117409 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20089 event pairs, 272 based on Foata normal form. 39/3111 useless extension candidates. Maximal degree in co-relation 17564. Up to 2121 conditions per place. [2024-06-27 18:29:26,152 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 230 selfloop transitions, 79 changer transitions 0/318 dead transitions. [2024-06-27 18:29:26,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 318 transitions, 4113 flow [2024-06-27 18:29:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:29:26,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-27 18:29:26,153 INFO L175 Difference]: Start difference. First operand has 257 places, 271 transitions, 2717 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:29:26,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 318 transitions, 4113 flow [2024-06-27 18:29:26,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 318 transitions, 3968 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:29:26,623 INFO L231 Difference]: Finished difference. Result has 256 places, 279 transitions, 2907 flow [2024-06-27 18:29:26,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2907, PETRI_PLACES=256, PETRI_TRANSITIONS=279} [2024-06-27 18:29:26,623 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-06-27 18:29:26,623 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 279 transitions, 2907 flow [2024-06-27 18:29:26,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:26,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:26,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:26,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:29:26,624 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:26,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2004151671, now seen corresponding path program 2 times [2024-06-27 18:29:26,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:26,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997972693] [2024-06-27 18:29:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:26,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:27,428 INFO 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 18:29:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997972693] [2024-06-27 18:29:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997972693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:27,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:27,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758824161] [2024-06-27 18:29:27,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:27,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:27,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:27,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:27,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:29:27,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 279 transitions, 2907 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:27,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:27,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:29:27,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:28,154 INFO L124 PetriNetUnfolderBase]: 1643/3078 cut-off events. [2024-06-27 18:29:28,154 INFO L125 PetriNetUnfolderBase]: For 121495/121583 co-relation queries the response was YES. [2024-06-27 18:29:28,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17437 conditions, 3078 events. 1643/3078 cut-off events. For 121495/121583 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 20432 event pairs, 286 based on Foata normal form. 65/3106 useless extension candidates. Maximal degree in co-relation 17310. Up to 2217 conditions per place. [2024-06-27 18:29:28,242 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 229 selfloop transitions, 43 changer transitions 0/317 dead transitions. [2024-06-27 18:29:28,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 317 transitions, 3629 flow [2024-06-27 18:29:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:29:28,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-27 18:29:28,243 INFO L175 Difference]: Start difference. First operand has 256 places, 279 transitions, 2907 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:29:28,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 317 transitions, 3629 flow [2024-06-27 18:29:28,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 317 transitions, 3534 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:28,689 INFO L231 Difference]: Finished difference. Result has 262 places, 281 transitions, 2937 flow [2024-06-27 18:29:28,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2937, PETRI_PLACES=262, PETRI_TRANSITIONS=281} [2024-06-27 18:29:28,690 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-06-27 18:29:28,690 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 281 transitions, 2937 flow [2024-06-27 18:29:28,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:28,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:28,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:28,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:29:28,691 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:28,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:28,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2004141069, now seen corresponding path program 7 times [2024-06-27 18:29:28,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:28,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960099325] [2024-06-27 18:29:28,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:28,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:29,415 INFO 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 18:29:29,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:29,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960099325] [2024-06-27 18:29:29,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960099325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:29,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:29,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52884262] [2024-06-27 18:29:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:29,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:29,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:29,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:29,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 281 transitions, 2937 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:29,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:29,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:29,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:30,118 INFO L124 PetriNetUnfolderBase]: 1732/3160 cut-off events. [2024-06-27 18:29:30,118 INFO L125 PetriNetUnfolderBase]: For 122719/122823 co-relation queries the response was YES. [2024-06-27 18:29:30,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18256 conditions, 3160 events. 1732/3160 cut-off events. For 122719/122823 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20407 event pairs, 273 based on Foata normal form. 45/3155 useless extension candidates. Maximal degree in co-relation 18127. Up to 2152 conditions per place. [2024-06-27 18:29:30,150 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 233 selfloop transitions, 80 changer transitions 0/322 dead transitions. [2024-06-27 18:29:30,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 322 transitions, 4223 flow [2024-06-27 18:29:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:29:30,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 18:29:30,151 INFO L175 Difference]: Start difference. First operand has 262 places, 281 transitions, 2937 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:29:30,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 322 transitions, 4223 flow [2024-06-27 18:29:30,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 322 transitions, 4114 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:30,665 INFO L231 Difference]: Finished difference. Result has 264 places, 283 transitions, 3031 flow [2024-06-27 18:29:30,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3031, PETRI_PLACES=264, PETRI_TRANSITIONS=283} [2024-06-27 18:29:30,666 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 221 predicate places. [2024-06-27 18:29:30,666 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 283 transitions, 3031 flow [2024-06-27 18:29:30,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:30,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:30,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:30,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:29:30,667 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:30,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:30,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1222992709, now seen corresponding path program 11 times [2024-06-27 18:29:30,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:30,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512316101] [2024-06-27 18:29:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:30,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:31,382 INFO 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 18:29:31,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:31,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512316101] [2024-06-27 18:29:31,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512316101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:31,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:31,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:31,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799327878] [2024-06-27 18:29:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:31,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:31,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:31,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:31,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 283 transitions, 3031 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:31,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:31,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:31,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:32,262 INFO L124 PetriNetUnfolderBase]: 1829/3392 cut-off events. [2024-06-27 18:29:32,262 INFO L125 PetriNetUnfolderBase]: For 148667/148792 co-relation queries the response was YES. [2024-06-27 18:29:32,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19960 conditions, 3392 events. 1829/3392 cut-off events. For 148667/148792 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22529 event pairs, 246 based on Foata normal form. 60/3416 useless extension candidates. Maximal degree in co-relation 19830. Up to 1700 conditions per place. [2024-06-27 18:29:32,295 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 218 selfloop transitions, 107 changer transitions 0/334 dead transitions. [2024-06-27 18:29:32,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 334 transitions, 4477 flow [2024-06-27 18:29:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-27 18:29:32,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 18:29:32,297 INFO L175 Difference]: Start difference. First operand has 264 places, 283 transitions, 3031 flow. Second operand 10 states and 200 transitions. [2024-06-27 18:29:32,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 334 transitions, 4477 flow [2024-06-27 18:29:32,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 334 transitions, 4304 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:32,955 INFO L231 Difference]: Finished difference. Result has 267 places, 291 transitions, 3241 flow [2024-06-27 18:29:32,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2858, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3241, PETRI_PLACES=267, PETRI_TRANSITIONS=291} [2024-06-27 18:29:32,956 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 224 predicate places. [2024-06-27 18:29:32,956 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 291 transitions, 3241 flow [2024-06-27 18:29:32,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:32,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:32,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:32,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:29:32,957 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:32,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash -868303047, now seen corresponding path program 3 times [2024-06-27 18:29:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160026637] [2024-06-27 18:29:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:32,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:33,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:33,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160026637] [2024-06-27 18:29:33,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160026637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:33,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:33,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:33,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429448312] [2024-06-27 18:29:33,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:33,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:33,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:33,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:33,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:29:33,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 291 transitions, 3241 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:33,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:33,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:29:33,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:34,858 INFO L124 PetriNetUnfolderBase]: 1756/3282 cut-off events. [2024-06-27 18:29:34,858 INFO L125 PetriNetUnfolderBase]: For 149491/149590 co-relation queries the response was YES. [2024-06-27 18:29:34,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19624 conditions, 3282 events. 1756/3282 cut-off events. For 149491/149590 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 22183 event pairs, 352 based on Foata normal form. 82/3322 useless extension candidates. Maximal degree in co-relation 19493. Up to 2529 conditions per place. [2024-06-27 18:29:34,890 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 265 selfloop transitions, 20 changer transitions 0/331 dead transitions. [2024-06-27 18:29:34,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 331 transitions, 3993 flow [2024-06-27 18:29:34,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:34,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:29:34,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:29:34,891 INFO L175 Difference]: Start difference. First operand has 267 places, 291 transitions, 3241 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:29:34,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 331 transitions, 3993 flow [2024-06-27 18:29:35,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 331 transitions, 3880 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:29:35,546 INFO L231 Difference]: Finished difference. Result has 274 places, 293 transitions, 3212 flow [2024-06-27 18:29:35,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3212, PETRI_PLACES=274, PETRI_TRANSITIONS=293} [2024-06-27 18:29:35,547 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 231 predicate places. [2024-06-27 18:29:35,547 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 293 transitions, 3212 flow [2024-06-27 18:29:35,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:35,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:35,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:35,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:29:35,548 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:35,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1928892809, now seen corresponding path program 12 times [2024-06-27 18:29:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:35,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574192481] [2024-06-27 18:29:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:35,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:36,272 INFO 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 18:29:36,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:36,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574192481] [2024-06-27 18:29:36,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574192481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:36,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:36,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:36,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357686131] [2024-06-27 18:29:36,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:36,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:36,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:36,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:36,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:36,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:36,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 293 transitions, 3212 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:36,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:36,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:36,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:37,108 INFO L124 PetriNetUnfolderBase]: 1914/3531 cut-off events. [2024-06-27 18:29:37,109 INFO L125 PetriNetUnfolderBase]: For 171389/171574 co-relation queries the response was YES. [2024-06-27 18:29:37,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21451 conditions, 3531 events. 1914/3531 cut-off events. For 171389/171574 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 23541 event pairs, 328 based on Foata normal form. 99/3589 useless extension candidates. Maximal degree in co-relation 21318. Up to 1777 conditions per place. [2024-06-27 18:29:37,146 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 224 selfloop transitions, 109 changer transitions 0/342 dead transitions. [2024-06-27 18:29:37,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 342 transitions, 4658 flow [2024-06-27 18:29:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-27 18:29:37,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2024-06-27 18:29:37,148 INFO L175 Difference]: Start difference. First operand has 274 places, 293 transitions, 3212 flow. Second operand 10 states and 201 transitions. [2024-06-27 18:29:37,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 342 transitions, 4658 flow [2024-06-27 18:29:37,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 342 transitions, 4592 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:37,849 INFO L231 Difference]: Finished difference. Result has 275 places, 299 transitions, 3501 flow [2024-06-27 18:29:37,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3501, PETRI_PLACES=275, PETRI_TRANSITIONS=299} [2024-06-27 18:29:37,849 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 232 predicate places. [2024-06-27 18:29:37,849 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 299 transitions, 3501 flow [2024-06-27 18:29:37,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:37,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:37,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:37,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:29:37,850 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:37,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash -243206073, now seen corresponding path program 8 times [2024-06-27 18:29:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560307906] [2024-06-27 18:29:37,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:37,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:38,569 INFO 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 18:29:38,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:38,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560307906] [2024-06-27 18:29:38,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560307906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:38,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:38,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:38,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693374765] [2024-06-27 18:29:38,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:38,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:38,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:38,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:38,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:38,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:38,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 299 transitions, 3501 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:38,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:38,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:38,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:39,397 INFO L124 PetriNetUnfolderBase]: 1935/3547 cut-off events. [2024-06-27 18:29:39,397 INFO L125 PetriNetUnfolderBase]: For 176632/176790 co-relation queries the response was YES. [2024-06-27 18:29:39,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22454 conditions, 3547 events. 1935/3547 cut-off events. For 176632/176790 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 23612 event pairs, 317 based on Foata normal form. 71/3570 useless extension candidates. Maximal degree in co-relation 22320. Up to 2452 conditions per place. [2024-06-27 18:29:39,434 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 253 selfloop transitions, 81 changer transitions 0/343 dead transitions. [2024-06-27 18:29:39,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 343 transitions, 4911 flow [2024-06-27 18:29:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 18:29:39,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-27 18:29:39,436 INFO L175 Difference]: Start difference. First operand has 275 places, 299 transitions, 3501 flow. Second operand 10 states and 196 transitions. [2024-06-27 18:29:39,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 343 transitions, 4911 flow [2024-06-27 18:29:40,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 343 transitions, 4624 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:40,153 INFO L231 Difference]: Finished difference. Result has 279 places, 303 transitions, 3473 flow [2024-06-27 18:29:40,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3473, PETRI_PLACES=279, PETRI_TRANSITIONS=303} [2024-06-27 18:29:40,154 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-27 18:29:40,154 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 303 transitions, 3473 flow [2024-06-27 18:29:40,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:40,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:40,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:40,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:29:40,154 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:40,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2080966247, now seen corresponding path program 13 times [2024-06-27 18:29:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:40,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868418275] [2024-06-27 18:29:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:40,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:40,883 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 18:29:40,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:40,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868418275] [2024-06-27 18:29:40,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868418275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:40,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:40,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:40,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032682441] [2024-06-27 18:29:40,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:40,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:40,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:40,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:40,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:40,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 303 transitions, 3473 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:40,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:40,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:40,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:41,707 INFO L124 PetriNetUnfolderBase]: 1964/3624 cut-off events. [2024-06-27 18:29:41,707 INFO L125 PetriNetUnfolderBase]: For 182756/182882 co-relation queries the response was YES. [2024-06-27 18:29:41,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22051 conditions, 3624 events. 1964/3624 cut-off events. For 182756/182882 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 24291 event pairs, 259 based on Foata normal form. 64/3650 useless extension candidates. Maximal degree in co-relation 21917. Up to 1836 conditions per place. [2024-06-27 18:29:41,745 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 223 selfloop transitions, 116 changer transitions 0/348 dead transitions. [2024-06-27 18:29:41,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 348 transitions, 4849 flow [2024-06-27 18:29:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:41,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 18:29:41,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102564102564102 [2024-06-27 18:29:41,746 INFO L175 Difference]: Start difference. First operand has 279 places, 303 transitions, 3473 flow. Second operand 10 states and 199 transitions. [2024-06-27 18:29:41,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 348 transitions, 4849 flow [2024-06-27 18:29:42,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 348 transitions, 4594 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:42,553 INFO L231 Difference]: Finished difference. Result has 281 places, 305 transitions, 3493 flow [2024-06-27 18:29:42,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3493, PETRI_PLACES=281, PETRI_TRANSITIONS=305} [2024-06-27 18:29:42,554 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 238 predicate places. [2024-06-27 18:29:42,554 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 305 transitions, 3493 flow [2024-06-27 18:29:42,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:42,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:42,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:42,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:29:42,554 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:42,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:42,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1223280699, now seen corresponding path program 9 times [2024-06-27 18:29:42,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:42,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543669618] [2024-06-27 18:29:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:43,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:43,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543669618] [2024-06-27 18:29:43,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543669618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:43,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:43,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:43,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823764396] [2024-06-27 18:29:43,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:43,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:43,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:43,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:43,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:43,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 305 transitions, 3493 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:43,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:43,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:43,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:44,162 INFO L124 PetriNetUnfolderBase]: 1955/3563 cut-off events. [2024-06-27 18:29:44,163 INFO L125 PetriNetUnfolderBase]: For 178100/178227 co-relation queries the response was YES. [2024-06-27 18:29:44,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21885 conditions, 3563 events. 1955/3563 cut-off events. For 178100/178227 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23570 event pairs, 308 based on Foata normal form. 56/3565 useless extension candidates. Maximal degree in co-relation 21751. Up to 2484 conditions per place. [2024-06-27 18:29:44,194 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 247 selfloop transitions, 87 changer transitions 0/343 dead transitions. [2024-06-27 18:29:44,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 343 transitions, 4649 flow [2024-06-27 18:29:44,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:44,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:29:44,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:29:44,196 INFO L175 Difference]: Start difference. First operand has 281 places, 305 transitions, 3493 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:29:44,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 343 transitions, 4649 flow [2024-06-27 18:29:45,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 343 transitions, 4440 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:45,026 INFO L231 Difference]: Finished difference. Result has 285 places, 305 transitions, 3463 flow [2024-06-27 18:29:45,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3284, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3463, PETRI_PLACES=285, PETRI_TRANSITIONS=305} [2024-06-27 18:29:45,027 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-27 18:29:45,027 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 305 transitions, 3463 flow [2024-06-27 18:29:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:45,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:45,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:45,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:29:45,028 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:45,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash -880694119, now seen corresponding path program 14 times [2024-06-27 18:29:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:45,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854347561] [2024-06-27 18:29:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:45,757 INFO 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 18:29:45,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:45,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854347561] [2024-06-27 18:29:45,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854347561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:45,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:45,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206010653] [2024-06-27 18:29:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:45,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:45,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 305 transitions, 3463 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:45,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:45,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:45,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:46,579 INFO L124 PetriNetUnfolderBase]: 1958/3640 cut-off events. [2024-06-27 18:29:46,579 INFO L125 PetriNetUnfolderBase]: For 177693/177802 co-relation queries the response was YES. [2024-06-27 18:29:46,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21546 conditions, 3640 events. 1958/3640 cut-off events. For 177693/177802 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 24615 event pairs, 219 based on Foata normal form. 58/3662 useless extension candidates. Maximal degree in co-relation 21411. Up to 1830 conditions per place. [2024-06-27 18:29:46,617 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 205 selfloop transitions, 131 changer transitions 0/345 dead transitions. [2024-06-27 18:29:46,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 345 transitions, 4459 flow [2024-06-27 18:29:46,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 18:29:46,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49743589743589745 [2024-06-27 18:29:46,618 INFO L175 Difference]: Start difference. First operand has 285 places, 305 transitions, 3463 flow. Second operand 10 states and 194 transitions. [2024-06-27 18:29:46,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 345 transitions, 4459 flow [2024-06-27 18:29:47,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 345 transitions, 4259 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:47,304 INFO L231 Difference]: Finished difference. Result has 286 places, 305 transitions, 3530 flow [2024-06-27 18:29:47,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3530, PETRI_PLACES=286, PETRI_TRANSITIONS=305} [2024-06-27 18:29:47,305 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 243 predicate places. [2024-06-27 18:29:47,305 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 305 transitions, 3530 flow [2024-06-27 18:29:47,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:47,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:47,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:47,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:29:47,306 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:47,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1223289379, now seen corresponding path program 15 times [2024-06-27 18:29:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:47,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175531874] [2024-06-27 18:29:47,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:47,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:48,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:48,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175531874] [2024-06-27 18:29:48,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175531874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:48,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:48,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:48,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708344252] [2024-06-27 18:29:48,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:48,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:48,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:48,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:48,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:48,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:48,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 305 transitions, 3530 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:48,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:48,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:48,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:48,919 INFO L124 PetriNetUnfolderBase]: 1954/3604 cut-off events. [2024-06-27 18:29:48,920 INFO L125 PetriNetUnfolderBase]: For 174251/174375 co-relation queries the response was YES. [2024-06-27 18:29:48,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21664 conditions, 3604 events. 1954/3604 cut-off events. For 174251/174375 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24186 event pairs, 255 based on Foata normal form. 63/3629 useless extension candidates. Maximal degree in co-relation 21528. Up to 1827 conditions per place. [2024-06-27 18:29:48,957 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 218 selfloop transitions, 118 changer transitions 0/345 dead transitions. [2024-06-27 18:29:48,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 345 transitions, 4528 flow [2024-06-27 18:29:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 18:29:48,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:29:48,959 INFO L175 Difference]: Start difference. First operand has 286 places, 305 transitions, 3530 flow. Second operand 10 states and 195 transitions. [2024-06-27 18:29:48,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 345 transitions, 4528 flow [2024-06-27 18:29:49,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 345 transitions, 4281 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:49,675 INFO L231 Difference]: Finished difference. Result has 287 places, 305 transitions, 3524 flow [2024-06-27 18:29:49,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3524, PETRI_PLACES=287, PETRI_TRANSITIONS=305} [2024-06-27 18:29:49,676 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-27 18:29:49,676 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 305 transitions, 3524 flow [2024-06-27 18:29:49,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:49,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:49,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:49,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:29:49,677 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:49,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1212805179, now seen corresponding path program 10 times [2024-06-27 18:29:49,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:49,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367952338] [2024-06-27 18:29:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:49,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:50,424 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 18:29:50,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367952338] [2024-06-27 18:29:50,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367952338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:50,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:50,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:50,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166859432] [2024-06-27 18:29:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:50,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:50,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:50,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:50,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:50,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 305 transitions, 3524 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:50,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:50,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:50,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:51,388 INFO L124 PetriNetUnfolderBase]: 1992/3652 cut-off events. [2024-06-27 18:29:51,388 INFO L125 PetriNetUnfolderBase]: For 175687/175793 co-relation queries the response was YES. [2024-06-27 18:29:51,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22057 conditions, 3652 events. 1992/3652 cut-off events. For 175687/175793 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 24614 event pairs, 410 based on Foata normal form. 35/3640 useless extension candidates. Maximal degree in co-relation 21920. Up to 3076 conditions per place. [2024-06-27 18:29:51,426 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 313 selfloop transitions, 18 changer transitions 0/340 dead transitions. [2024-06-27 18:29:51,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 340 transitions, 4356 flow [2024-06-27 18:29:51,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:29:51,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-27 18:29:51,427 INFO L175 Difference]: Start difference. First operand has 287 places, 305 transitions, 3524 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:29:51,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 340 transitions, 4356 flow [2024-06-27 18:29:52,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 340 transitions, 4115 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:52,361 INFO L231 Difference]: Finished difference. Result has 288 places, 307 transitions, 3370 flow [2024-06-27 18:29:52,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3370, PETRI_PLACES=288, PETRI_TRANSITIONS=307} [2024-06-27 18:29:52,362 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 245 predicate places. [2024-06-27 18:29:52,362 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 307 transitions, 3370 flow [2024-06-27 18:29:52,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:52,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:52,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:52,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:29:52,363 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:52,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash -880693809, now seen corresponding path program 11 times [2024-06-27 18:29:52,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:52,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939729326] [2024-06-27 18:29:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:52,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:53,083 INFO 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 18:29:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:53,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939729326] [2024-06-27 18:29:53,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939729326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:53,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:53,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:53,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815216127] [2024-06-27 18:29:53,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:53,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:53,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:53,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 307 transitions, 3370 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:53,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:53,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:53,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:53,890 INFO L124 PetriNetUnfolderBase]: 1973/3586 cut-off events. [2024-06-27 18:29:53,891 INFO L125 PetriNetUnfolderBase]: For 176462/176584 co-relation queries the response was YES. [2024-06-27 18:29:53,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21262 conditions, 3586 events. 1973/3586 cut-off events. For 176462/176584 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23695 event pairs, 310 based on Foata normal form. 50/3576 useless extension candidates. Maximal degree in co-relation 21124. Up to 2500 conditions per place. [2024-06-27 18:29:53,928 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 241 selfloop transitions, 96 changer transitions 0/346 dead transitions. [2024-06-27 18:29:53,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 346 transitions, 4590 flow [2024-06-27 18:29:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:29:53,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-06-27 18:29:53,929 INFO L175 Difference]: Start difference. First operand has 288 places, 307 transitions, 3370 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:29:53,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 346 transitions, 4590 flow [2024-06-27 18:29:54,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 346 transitions, 4531 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:54,932 INFO L231 Difference]: Finished difference. Result has 290 places, 309 transitions, 3554 flow [2024-06-27 18:29:54,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3311, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3554, PETRI_PLACES=290, PETRI_TRANSITIONS=309} [2024-06-27 18:29:54,933 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 247 predicate places. [2024-06-27 18:29:54,933 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 309 transitions, 3554 flow [2024-06-27 18:29:54,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:54,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:54,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:29:54,934 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:54,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1948517035, now seen corresponding path program 4 times [2024-06-27 18:29:54,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:54,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107352671] [2024-06-27 18:29:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:54,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:55,587 INFO 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 18:29:55,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:55,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107352671] [2024-06-27 18:29:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107352671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:55,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:55,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:55,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543263542] [2024-06-27 18:29:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:55,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:55,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:55,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:55,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:55,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:29:55,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 309 transitions, 3554 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:55,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:55,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:29:55,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:56,435 INFO L124 PetriNetUnfolderBase]: 1896/3501 cut-off events. [2024-06-27 18:29:56,435 INFO L125 PetriNetUnfolderBase]: For 181769/181880 co-relation queries the response was YES. [2024-06-27 18:29:56,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21087 conditions, 3501 events. 1896/3501 cut-off events. For 181769/181880 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23607 event pairs, 329 based on Foata normal form. 74/3529 useless extension candidates. Maximal degree in co-relation 20948. Up to 2565 conditions per place. [2024-06-27 18:29:56,476 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 251 selfloop transitions, 45 changer transitions 0/346 dead transitions. [2024-06-27 18:29:56,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 346 transitions, 4328 flow [2024-06-27 18:29:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:29:56,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:29:56,477 INFO L175 Difference]: Start difference. First operand has 290 places, 309 transitions, 3554 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:29:56,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 346 transitions, 4328 flow [2024-06-27 18:29:57,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 346 transitions, 4124 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:57,444 INFO L231 Difference]: Finished difference. Result has 292 places, 311 transitions, 3487 flow [2024-06-27 18:29:57,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3350, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3487, PETRI_PLACES=292, PETRI_TRANSITIONS=311} [2024-06-27 18:29:57,444 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 249 predicate places. [2024-06-27 18:29:57,445 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 311 transitions, 3487 flow [2024-06-27 18:29:57,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:57,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:57,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:57,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:29:57,445 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:57,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1936936379, now seen corresponding path program 16 times [2024-06-27 18:29:57,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:57,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751880127] [2024-06-27 18:29:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:57,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:58,258 INFO 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 18:29:58,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:58,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751880127] [2024-06-27 18:29:58,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751880127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:58,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:58,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:58,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20822196] [2024-06-27 18:29:58,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:58,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:58,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:58,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:58,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:29:58,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 311 transitions, 3487 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:58,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:58,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:29:58,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:59,204 INFO L124 PetriNetUnfolderBase]: 2013/3689 cut-off events. [2024-06-27 18:29:59,204 INFO L125 PetriNetUnfolderBase]: For 189824/189988 co-relation queries the response was YES. [2024-06-27 18:29:59,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21829 conditions, 3689 events. 2013/3689 cut-off events. For 189824/189988 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24693 event pairs, 348 based on Foata normal form. 86/3728 useless extension candidates. Maximal degree in co-relation 21689. Up to 1900 conditions per place. [2024-06-27 18:29:59,244 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 235 selfloop transitions, 111 changer transitions 0/355 dead transitions. [2024-06-27 18:29:59,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 355 transitions, 4741 flow [2024-06-27 18:29:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-27 18:29:59,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153846153846153 [2024-06-27 18:29:59,246 INFO L175 Difference]: Start difference. First operand has 292 places, 311 transitions, 3487 flow. Second operand 10 states and 201 transitions. [2024-06-27 18:29:59,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 355 transitions, 4741 flow [2024-06-27 18:30:00,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 355 transitions, 4620 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:00,221 INFO L231 Difference]: Finished difference. Result has 294 places, 313 transitions, 3635 flow [2024-06-27 18:30:00,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3366, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3635, PETRI_PLACES=294, PETRI_TRANSITIONS=313} [2024-06-27 18:30:00,221 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-27 18:30:00,222 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 313 transitions, 3635 flow [2024-06-27 18:30:00,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:00,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:00,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:00,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:30:00,222 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:00,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1948517407, now seen corresponding path program 12 times [2024-06-27 18:30:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:00,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811231795] [2024-06-27 18:30:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:00,948 INFO 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 18:30:00,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811231795] [2024-06-27 18:30:00,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811231795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:00,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:00,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:00,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378105624] [2024-06-27 18:30:00,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:00,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:00,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:00,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:01,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:01,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 313 transitions, 3635 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:01,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:01,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:01,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:01,851 INFO L124 PetriNetUnfolderBase]: 2004/3637 cut-off events. [2024-06-27 18:30:01,851 INFO L125 PetriNetUnfolderBase]: For 184930/185058 co-relation queries the response was YES. [2024-06-27 18:30:01,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22044 conditions, 3637 events. 2004/3637 cut-off events. For 184930/185058 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 24069 event pairs, 318 based on Foata normal form. 52/3628 useless extension candidates. Maximal degree in co-relation 21903. Up to 2549 conditions per place. [2024-06-27 18:30:01,897 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 245 selfloop transitions, 95 changer transitions 0/349 dead transitions. [2024-06-27 18:30:01,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 349 transitions, 4643 flow [2024-06-27 18:30:01,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:01,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:30:01,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206 [2024-06-27 18:30:01,898 INFO L175 Difference]: Start difference. First operand has 294 places, 313 transitions, 3635 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:30:01,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 349 transitions, 4643 flow [2024-06-27 18:30:02,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 349 transitions, 4229 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-27 18:30:02,855 INFO L231 Difference]: Finished difference. Result has 294 places, 313 transitions, 3416 flow [2024-06-27 18:30:02,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3416, PETRI_PLACES=294, PETRI_TRANSITIONS=313} [2024-06-27 18:30:02,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-27 18:30:02,856 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 313 transitions, 3416 flow [2024-06-27 18:30:02,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:02,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:02,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:02,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:30:02,857 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:02,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash 861067351, now seen corresponding path program 17 times [2024-06-27 18:30:02,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:02,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078215165] [2024-06-27 18:30:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:02,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:03,569 INFO 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 18:30:03,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078215165] [2024-06-27 18:30:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078215165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:03,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739532277] [2024-06-27 18:30:03,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:03,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:03,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 313 transitions, 3416 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:03,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:03,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:03,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:04,458 INFO L124 PetriNetUnfolderBase]: 2007/3680 cut-off events. [2024-06-27 18:30:04,458 INFO L125 PetriNetUnfolderBase]: For 181497/181669 co-relation queries the response was YES. [2024-06-27 18:30:04,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21431 conditions, 3680 events. 2007/3680 cut-off events. For 181497/181669 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 24627 event pairs, 343 based on Foata normal form. 93/3727 useless extension candidates. Maximal degree in co-relation 21289. Up to 1894 conditions per place. [2024-06-27 18:30:04,499 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 232 selfloop transitions, 114 changer transitions 0/355 dead transitions. [2024-06-27 18:30:04,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 355 transitions, 4636 flow [2024-06-27 18:30:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 18:30:04,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102564102564102 [2024-06-27 18:30:04,500 INFO L175 Difference]: Start difference. First operand has 294 places, 313 transitions, 3416 flow. Second operand 10 states and 199 transitions. [2024-06-27 18:30:04,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 355 transitions, 4636 flow [2024-06-27 18:30:05,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 355 transitions, 4410 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:05,275 INFO L231 Difference]: Finished difference. Result has 295 places, 313 transitions, 3423 flow [2024-06-27 18:30:05,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3190, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3423, PETRI_PLACES=295, PETRI_TRANSITIONS=313} [2024-06-27 18:30:05,276 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-27 18:30:05,276 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 313 transitions, 3423 flow [2024-06-27 18:30:05,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:05,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:05,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:30:05,277 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:05,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash -251488963, now seen corresponding path program 18 times [2024-06-27 18:30:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:05,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830147621] [2024-06-27 18:30:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:05,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:06,000 INFO 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 18:30:06,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:06,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830147621] [2024-06-27 18:30:06,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830147621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:06,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:06,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63910598] [2024-06-27 18:30:06,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:06,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:06,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:06,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:06,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 313 transitions, 3423 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:06,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:06,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:06,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:06,826 INFO L124 PetriNetUnfolderBase]: 2003/3674 cut-off events. [2024-06-27 18:30:06,826 INFO L125 PetriNetUnfolderBase]: For 175502/175674 co-relation queries the response was YES. [2024-06-27 18:30:06,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21338 conditions, 3674 events. 2003/3674 cut-off events. For 175502/175674 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 24580 event pairs, 346 based on Foata normal form. 97/3726 useless extension candidates. Maximal degree in co-relation 21195. Up to 1891 conditions per place. [2024-06-27 18:30:06,865 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 224 selfloop transitions, 120 changer transitions 0/353 dead transitions. [2024-06-27 18:30:06,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 353 transitions, 4451 flow [2024-06-27 18:30:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 18:30:06,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025641025641026 [2024-06-27 18:30:06,866 INFO L175 Difference]: Start difference. First operand has 295 places, 313 transitions, 3423 flow. Second operand 10 states and 196 transitions. [2024-06-27 18:30:06,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 353 transitions, 4451 flow [2024-06-27 18:30:07,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 353 transitions, 4205 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:07,963 INFO L231 Difference]: Finished difference. Result has 297 places, 313 transitions, 3422 flow [2024-06-27 18:30:07,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3177, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3422, PETRI_PLACES=297, PETRI_TRANSITIONS=313} [2024-06-27 18:30:07,963 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-27 18:30:07,963 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 313 transitions, 3422 flow [2024-06-27 18:30:07,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:07,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:07,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:07,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:30:07,964 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:07,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash -243206383, now seen corresponding path program 19 times [2024-06-27 18:30:07,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:07,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472448624] [2024-06-27 18:30:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:07,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:08,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472448624] [2024-06-27 18:30:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472448624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:08,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:08,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:08,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499957460] [2024-06-27 18:30:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:08,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:08,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:08,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:08,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 313 transitions, 3422 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:08,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:08,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:08,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:09,501 INFO L124 PetriNetUnfolderBase]: 2025/3722 cut-off events. [2024-06-27 18:30:09,501 INFO L125 PetriNetUnfolderBase]: For 179109/179281 co-relation queries the response was YES. [2024-06-27 18:30:09,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21589 conditions, 3722 events. 2025/3722 cut-off events. For 179109/179281 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25013 event pairs, 347 based on Foata normal form. 92/3767 useless extension candidates. Maximal degree in co-relation 21445. Up to 1909 conditions per place. [2024-06-27 18:30:09,542 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 236 selfloop transitions, 112 changer transitions 0/357 dead transitions. [2024-06-27 18:30:09,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 357 transitions, 4508 flow [2024-06-27 18:30:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:09,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-27 18:30:09,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517948717948718 [2024-06-27 18:30:09,544 INFO L175 Difference]: Start difference. First operand has 297 places, 313 transitions, 3422 flow. Second operand 10 states and 202 transitions. [2024-06-27 18:30:09,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 357 transitions, 4508 flow [2024-06-27 18:30:10,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 357 transitions, 4248 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:30:10,670 INFO L231 Difference]: Finished difference. Result has 297 places, 315 transitions, 3431 flow [2024-06-27 18:30:10,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3431, PETRI_PLACES=297, PETRI_TRANSITIONS=315} [2024-06-27 18:30:10,671 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-27 18:30:10,671 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 315 transitions, 3431 flow [2024-06-27 18:30:10,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:10,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:10,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:10,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:30:10,672 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:10,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash 869410133, now seen corresponding path program 5 times [2024-06-27 18:30:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:10,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901241683] [2024-06-27 18:30:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:10,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:11,505 INFO 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 18:30:11,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901241683] [2024-06-27 18:30:11,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901241683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:11,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:11,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:11,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738444741] [2024-06-27 18:30:11,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:11,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:11,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:11,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:11,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:11,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:30:11,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 315 transitions, 3431 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:11,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:11,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:30:11,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:12,343 INFO L124 PetriNetUnfolderBase]: 1921/3556 cut-off events. [2024-06-27 18:30:12,344 INFO L125 PetriNetUnfolderBase]: For 172537/172657 co-relation queries the response was YES. [2024-06-27 18:30:12,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20552 conditions, 3556 events. 1921/3556 cut-off events. For 172537/172657 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 24216 event pairs, 334 based on Foata normal form. 81/3587 useless extension candidates. Maximal degree in co-relation 20407. Up to 2611 conditions per place. [2024-06-27 18:30:12,386 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 261 selfloop transitions, 42 changer transitions 0/353 dead transitions. [2024-06-27 18:30:12,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 353 transitions, 4227 flow [2024-06-27 18:30:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:12,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:30:12,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 18:30:12,388 INFO L175 Difference]: Start difference. First operand has 297 places, 315 transitions, 3431 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:30:12,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 353 transitions, 4227 flow [2024-06-27 18:30:13,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 353 transitions, 3990 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:13,436 INFO L231 Difference]: Finished difference. Result has 300 places, 317 transitions, 3329 flow [2024-06-27 18:30:13,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3329, PETRI_PLACES=300, PETRI_TRANSITIONS=317} [2024-06-27 18:30:13,437 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-27 18:30:13,437 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 317 transitions, 3329 flow [2024-06-27 18:30:13,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:13,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:13,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:13,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:30:13,438 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:13,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1928901489, now seen corresponding path program 13 times [2024-06-27 18:30:13,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:13,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650749289] [2024-06-27 18:30:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:13,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:14,166 INFO 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 18:30:14,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:14,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650749289] [2024-06-27 18:30:14,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650749289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:14,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:14,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:14,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052763528] [2024-06-27 18:30:14,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:14,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:14,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:14,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:14,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 317 transitions, 3329 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:14,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:14,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:14,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:15,006 INFO L124 PetriNetUnfolderBase]: 2017/3690 cut-off events. [2024-06-27 18:30:15,006 INFO L125 PetriNetUnfolderBase]: For 169140/169284 co-relation queries the response was YES. [2024-06-27 18:30:15,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20809 conditions, 3690 events. 2017/3690 cut-off events. For 169140/169284 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 24688 event pairs, 328 based on Foata normal form. 67/3704 useless extension candidates. Maximal degree in co-relation 20663. Up to 2571 conditions per place. [2024-06-27 18:30:15,043 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 254 selfloop transitions, 91 changer transitions 0/354 dead transitions. [2024-06-27 18:30:15,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 354 transitions, 4361 flow [2024-06-27 18:30:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:30:15,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:30:15,045 INFO L175 Difference]: Start difference. First operand has 300 places, 317 transitions, 3329 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:30:15,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 354 transitions, 4361 flow [2024-06-27 18:30:16,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 354 transitions, 4220 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:16,035 INFO L231 Difference]: Finished difference. Result has 302 places, 317 transitions, 3375 flow [2024-06-27 18:30:16,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3375, PETRI_PLACES=302, PETRI_TRANSITIONS=317} [2024-06-27 18:30:16,035 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 259 predicate places. [2024-06-27 18:30:16,035 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 317 transitions, 3375 flow [2024-06-27 18:30:16,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:16,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:16,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:16,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:30:16,036 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:16,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:16,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1937243589, now seen corresponding path program 14 times [2024-06-27 18:30:16,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:16,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304359400] [2024-06-27 18:30:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:16,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:16,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304359400] [2024-06-27 18:30:16,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304359400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:16,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:16,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118294274] [2024-06-27 18:30:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:16,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:16,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:16,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 317 transitions, 3375 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:16,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:16,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:16,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:17,564 INFO L124 PetriNetUnfolderBase]: 2030/3706 cut-off events. [2024-06-27 18:30:17,564 INFO L125 PetriNetUnfolderBase]: For 172321/172460 co-relation queries the response was YES. [2024-06-27 18:30:17,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21143 conditions, 3706 events. 2030/3706 cut-off events. For 172321/172460 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24748 event pairs, 329 based on Foata normal form. 67/3718 useless extension candidates. Maximal degree in co-relation 20996. Up to 2585 conditions per place. [2024-06-27 18:30:17,604 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 257 selfloop transitions, 90 changer transitions 0/356 dead transitions. [2024-06-27 18:30:17,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 356 transitions, 4457 flow [2024-06-27 18:30:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:17,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:30:17,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2024-06-27 18:30:17,605 INFO L175 Difference]: Start difference. First operand has 302 places, 317 transitions, 3375 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:30:17,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 356 transitions, 4457 flow [2024-06-27 18:30:18,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 356 transitions, 4260 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:18,788 INFO L231 Difference]: Finished difference. Result has 303 places, 319 transitions, 3407 flow [2024-06-27 18:30:18,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3182, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3407, PETRI_PLACES=303, PETRI_TRANSITIONS=319} [2024-06-27 18:30:18,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 260 predicate places. [2024-06-27 18:30:18,788 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 319 transitions, 3407 flow [2024-06-27 18:30:18,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:18,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:18,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:30:18,789 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:18,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:18,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1937233359, now seen corresponding path program 15 times [2024-06-27 18:30:18,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601572013] [2024-06-27 18:30:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:19,522 INFO 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 18:30:19,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:19,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601572013] [2024-06-27 18:30:19,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601572013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:19,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:19,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:19,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789449260] [2024-06-27 18:30:19,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:19,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:19,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:19,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:19,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:19,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 319 transitions, 3407 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:19,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:19,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:19,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:20,389 INFO L124 PetriNetUnfolderBase]: 2028/3709 cut-off events. [2024-06-27 18:30:20,389 INFO L125 PetriNetUnfolderBase]: For 170531/170666 co-relation queries the response was YES. [2024-06-27 18:30:20,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21041 conditions, 3709 events. 2028/3709 cut-off events. For 170531/170666 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24849 event pairs, 332 based on Foata normal form. 60/3714 useless extension candidates. Maximal degree in co-relation 20893. Up to 2583 conditions per place. [2024-06-27 18:30:20,429 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 258 selfloop transitions, 88 changer transitions 0/355 dead transitions. [2024-06-27 18:30:20,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 355 transitions, 4247 flow [2024-06-27 18:30:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:30:20,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2024-06-27 18:30:20,430 INFO L175 Difference]: Start difference. First operand has 303 places, 319 transitions, 3407 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:30:20,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 355 transitions, 4247 flow [2024-06-27 18:30:21,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 355 transitions, 3985 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:21,617 INFO L231 Difference]: Finished difference. Result has 305 places, 319 transitions, 3326 flow [2024-06-27 18:30:21,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3326, PETRI_PLACES=305, PETRI_TRANSITIONS=319} [2024-06-27 18:30:21,617 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 262 predicate places. [2024-06-27 18:30:21,617 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 319 transitions, 3326 flow [2024-06-27 18:30:21,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:21,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:21,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:21,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:30:21,618 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:21,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1937233049, now seen corresponding path program 20 times [2024-06-27 18:30:21,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:21,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129404040] [2024-06-27 18:30:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:22,330 INFO 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 18:30:22,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:22,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129404040] [2024-06-27 18:30:22,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129404040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:22,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:22,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:22,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754478658] [2024-06-27 18:30:22,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:22,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:22,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:22,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:22,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:22,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:22,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 319 transitions, 3326 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:22,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:22,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:22,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:23,293 INFO L124 PetriNetUnfolderBase]: 2031/3732 cut-off events. [2024-06-27 18:30:23,293 INFO L125 PetriNetUnfolderBase]: For 168608/168772 co-relation queries the response was YES. [2024-06-27 18:30:23,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20720 conditions, 3732 events. 2031/3732 cut-off events. For 168608/168772 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 25090 event pairs, 339 based on Foata normal form. 86/3770 useless extension candidates. Maximal degree in co-relation 20571. Up to 1921 conditions per place. [2024-06-27 18:30:23,333 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 235 selfloop transitions, 115 changer transitions 0/359 dead transitions. [2024-06-27 18:30:23,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 359 transitions, 4182 flow [2024-06-27 18:30:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 18:30:23,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-06-27 18:30:23,334 INFO L175 Difference]: Start difference. First operand has 305 places, 319 transitions, 3326 flow. Second operand 10 states and 198 transitions. [2024-06-27 18:30:23,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 359 transitions, 4182 flow [2024-06-27 18:30:24,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 359 transitions, 3963 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 18:30:24,853 INFO L231 Difference]: Finished difference. Result has 305 places, 319 transitions, 3342 flow [2024-06-27 18:30:24,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3342, PETRI_PLACES=305, PETRI_TRANSITIONS=319} [2024-06-27 18:30:24,854 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 262 predicate places. [2024-06-27 18:30:24,854 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 319 transitions, 3342 flow [2024-06-27 18:30:24,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:24,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:24,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:24,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:30:24,854 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:24,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:24,855 INFO L85 PathProgramCache]: Analyzing trace with hash 749492241, now seen corresponding path program 3 times [2024-06-27 18:30:24,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:24,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444667294] [2024-06-27 18:30:24,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:24,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:25,650 INFO 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 18:30:25,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444667294] [2024-06-27 18:30:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444667294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:25,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:25,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:25,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43280092] [2024-06-27 18:30:25,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:25,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:25,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:25,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:25,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:25,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 319 transitions, 3342 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:25,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:25,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:25,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:26,754 INFO L124 PetriNetUnfolderBase]: 2208/3985 cut-off events. [2024-06-27 18:30:26,754 INFO L125 PetriNetUnfolderBase]: For 172725/173031 co-relation queries the response was YES. [2024-06-27 18:30:26,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22709 conditions, 3985 events. 2208/3985 cut-off events. For 172725/173031 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 27027 event pairs, 467 based on Foata normal form. 89/3998 useless extension candidates. Maximal degree in co-relation 22559. Up to 3198 conditions per place. [2024-06-27 18:30:26,801 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 312 selfloop transitions, 117 changer transitions 0/438 dead transitions. [2024-06-27 18:30:26,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 438 transitions, 5273 flow [2024-06-27 18:30:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:30:26,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801864801864802 [2024-06-27 18:30:26,802 INFO L175 Difference]: Start difference. First operand has 305 places, 319 transitions, 3342 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:30:26,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 438 transitions, 5273 flow [2024-06-27 18:30:27,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 438 transitions, 4931 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:30:27,941 INFO L231 Difference]: Finished difference. Result has 309 places, 386 transitions, 4243 flow [2024-06-27 18:30:27,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4243, PETRI_PLACES=309, PETRI_TRANSITIONS=386} [2024-06-27 18:30:27,941 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 266 predicate places. [2024-06-27 18:30:27,941 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 386 transitions, 4243 flow [2024-06-27 18:30:27,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:27,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:27,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:27,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:30:27,942 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:27,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:27,942 INFO L85 PathProgramCache]: Analyzing trace with hash -2002449509, now seen corresponding path program 4 times [2024-06-27 18:30:27,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:27,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639988638] [2024-06-27 18:30:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:27,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:28,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:28,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639988638] [2024-06-27 18:30:28,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639988638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:28,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:28,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126459909] [2024-06-27 18:30:28,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:28,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:28,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:28,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:28,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:28,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 386 transitions, 4243 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:28,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:28,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:28,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:29,766 INFO L124 PetriNetUnfolderBase]: 2284/4114 cut-off events. [2024-06-27 18:30:29,766 INFO L125 PetriNetUnfolderBase]: For 179814/180136 co-relation queries the response was YES. [2024-06-27 18:30:29,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23652 conditions, 4114 events. 2284/4114 cut-off events. For 179814/180136 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 28041 event pairs, 487 based on Foata normal form. 97/4131 useless extension candidates. Maximal degree in co-relation 23497. Up to 3419 conditions per place. [2024-06-27 18:30:29,811 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 360 selfloop transitions, 87 changer transitions 0/456 dead transitions. [2024-06-27 18:30:29,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 456 transitions, 5716 flow [2024-06-27 18:30:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:30:29,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662004662004662 [2024-06-27 18:30:29,813 INFO L175 Difference]: Start difference. First operand has 309 places, 386 transitions, 4243 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:30:29,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 456 transitions, 5716 flow [2024-06-27 18:30:30,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 456 transitions, 5586 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 18:30:30,657 INFO L231 Difference]: Finished difference. Result has 320 places, 417 transitions, 4836 flow [2024-06-27 18:30:30,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4836, PETRI_PLACES=320, PETRI_TRANSITIONS=417} [2024-06-27 18:30:30,657 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-27 18:30:30,657 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 417 transitions, 4836 flow [2024-06-27 18:30:30,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:30,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:30,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:30:30,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:30:30,658 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:30,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:30,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1320738081, now seen corresponding path program 5 times [2024-06-27 18:30:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:30,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195785058] [2024-06-27 18:30:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:30,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:31,444 INFO 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 18:30:31,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:31,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195785058] [2024-06-27 18:30:31,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195785058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:31,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:31,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235390791] [2024-06-27 18:30:31,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:31,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:31,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:31,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:31,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:31,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 417 transitions, 4836 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:31,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:31,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:31,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:32,618 INFO L124 PetriNetUnfolderBase]: 2362/4256 cut-off events. [2024-06-27 18:30:32,618 INFO L125 PetriNetUnfolderBase]: For 181755/182100 co-relation queries the response was YES. [2024-06-27 18:30:32,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25100 conditions, 4256 events. 2362/4256 cut-off events. For 181755/182100 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 29188 event pairs, 505 based on Foata normal form. 108/4280 useless extension candidates. Maximal degree in co-relation 24940. Up to 3494 conditions per place. [2024-06-27 18:30:32,665 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 373 selfloop transitions, 103 changer transitions 0/485 dead transitions. [2024-06-27 18:30:32,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 485 transitions, 6439 flow [2024-06-27 18:30:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:30:32,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46853146853146854 [2024-06-27 18:30:32,667 INFO L175 Difference]: Start difference. First operand has 320 places, 417 transitions, 4836 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:30:32,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 485 transitions, 6439 flow [2024-06-27 18:30:33,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 485 transitions, 6254 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:33,703 INFO L231 Difference]: Finished difference. Result has 328 places, 450 transitions, 5470 flow [2024-06-27 18:30:33,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4690, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5470, PETRI_PLACES=328, PETRI_TRANSITIONS=450} [2024-06-27 18:30:33,704 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 285 predicate places. [2024-06-27 18:30:33,704 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 450 transitions, 5470 flow [2024-06-27 18:30:33,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:33,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:33,704 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 18:30:33,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:30:33,704 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:33,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:33,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1886810867, now seen corresponding path program 1 times [2024-06-27 18:30:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:33,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047590451] [2024-06-27 18:30:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:34,549 INFO 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 18:30:34,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:34,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047590451] [2024-06-27 18:30:34,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047590451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:34,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:34,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:30:34,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128131438] [2024-06-27 18:30:34,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:34,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:30:34,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:34,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:30:34,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:30:34,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:30:34,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 450 transitions, 5470 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 18:30:34,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:34,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:30:34,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:35,621 INFO L124 PetriNetUnfolderBase]: 2143/4058 cut-off events. [2024-06-27 18:30:35,622 INFO L125 PetriNetUnfolderBase]: For 189638/189852 co-relation queries the response was YES. [2024-06-27 18:30:35,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24116 conditions, 4058 events. 2143/4058 cut-off events. For 189638/189852 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 28909 event pairs, 379 based on Foata normal form. 112/4078 useless extension candidates. Maximal degree in co-relation 23953. Up to 2992 conditions per place. [2024-06-27 18:30:35,662 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 330 selfloop transitions, 111 changer transitions 0/487 dead transitions. [2024-06-27 18:30:35,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 487 transitions, 6599 flow [2024-06-27 18:30:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:30:35,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 18:30:35,663 INFO L175 Difference]: Start difference. First operand has 328 places, 450 transitions, 5470 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:30:35,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 487 transitions, 6599 flow [2024-06-27 18:30:36,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 487 transitions, 6518 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:30:36,463 INFO L231 Difference]: Finished difference. Result has 333 places, 462 transitions, 5780 flow [2024-06-27 18:30:36,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5391, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5780, PETRI_PLACES=333, PETRI_TRANSITIONS=462} [2024-06-27 18:30:36,464 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-06-27 18:30:36,464 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 462 transitions, 5780 flow [2024-06-27 18:30:36,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 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 18:30:36,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:36,464 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 18:30:36,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:30:36,464 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:36,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:36,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1342928073, now seen corresponding path program 2 times [2024-06-27 18:30:36,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:36,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955864432] [2024-06-27 18:30:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:36,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:37,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:37,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955864432] [2024-06-27 18:30:37,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955864432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:37,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:37,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:37,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235625685] [2024-06-27 18:30:37,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:37,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:37,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:30:37,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 462 transitions, 5780 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:37,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:37,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:30:37,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:38,292 INFO L124 PetriNetUnfolderBase]: 2175/4095 cut-off events. [2024-06-27 18:30:38,293 INFO L125 PetriNetUnfolderBase]: For 193337/193557 co-relation queries the response was YES. [2024-06-27 18:30:38,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24801 conditions, 4095 events. 2175/4095 cut-off events. For 193337/193557 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 29060 event pairs, 356 based on Foata normal form. 118/4127 useless extension candidates. Maximal degree in co-relation 24636. Up to 2991 conditions per place. [2024-06-27 18:30:38,342 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 344 selfloop transitions, 110 changer transitions 0/500 dead transitions. [2024-06-27 18:30:38,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 500 transitions, 6874 flow [2024-06-27 18:30:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:30:38,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 18:30:38,343 INFO L175 Difference]: Start difference. First operand has 333 places, 462 transitions, 5780 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:30:38,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 500 transitions, 6874 flow [2024-06-27 18:30:39,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 500 transitions, 6752 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 18:30:39,415 INFO L231 Difference]: Finished difference. Result has 342 places, 465 transitions, 5948 flow [2024-06-27 18:30:39,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5658, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5948, PETRI_PLACES=342, PETRI_TRANSITIONS=465} [2024-06-27 18:30:39,415 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 299 predicate places. [2024-06-27 18:30:39,416 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 465 transitions, 5948 flow [2024-06-27 18:30:39,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:39,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:39,416 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 18:30:39,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:30:39,416 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:39,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1770625967, now seen corresponding path program 3 times [2024-06-27 18:30:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415329677] [2024-06-27 18:30:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:39,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:40,253 INFO 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 18:30:40,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:40,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415329677] [2024-06-27 18:30:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415329677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:40,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656576665] [2024-06-27 18:30:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:40,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:30:40,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 465 transitions, 5948 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:40,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:40,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:30:40,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:41,483 INFO L124 PetriNetUnfolderBase]: 2191/4104 cut-off events. [2024-06-27 18:30:41,483 INFO L125 PetriNetUnfolderBase]: For 201644/201864 co-relation queries the response was YES. [2024-06-27 18:30:41,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25198 conditions, 4104 events. 2191/4104 cut-off events. For 201644/201864 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29117 event pairs, 402 based on Foata normal form. 118/4135 useless extension candidates. Maximal degree in co-relation 25030. Up to 3098 conditions per place. [2024-06-27 18:30:41,532 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 389 selfloop transitions, 71 changer transitions 0/506 dead transitions. [2024-06-27 18:30:41,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 506 transitions, 7091 flow [2024-06-27 18:30:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:30:41,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2024-06-27 18:30:41,534 INFO L175 Difference]: Start difference. First operand has 342 places, 465 transitions, 5948 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:30:41,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 506 transitions, 7091 flow [2024-06-27 18:30:42,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 506 transitions, 6859 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:42,906 INFO L231 Difference]: Finished difference. Result has 346 places, 469 transitions, 5933 flow [2024-06-27 18:30:42,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5716, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5933, PETRI_PLACES=346, PETRI_TRANSITIONS=469} [2024-06-27 18:30:42,906 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2024-06-27 18:30:42,907 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 469 transitions, 5933 flow [2024-06-27 18:30:42,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:42,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:42,907 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 18:30:42,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:30:42,907 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:42,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1886804915, now seen corresponding path program 1 times [2024-06-27 18:30:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:42,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749091244] [2024-06-27 18:30:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:43,886 INFO 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 18:30:43,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:43,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749091244] [2024-06-27 18:30:43,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749091244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:43,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:43,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:43,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369927040] [2024-06-27 18:30:43,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:43,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:43,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:43,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:43,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:43,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 469 transitions, 5933 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:43,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:43,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:43,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:45,146 INFO L124 PetriNetUnfolderBase]: 2408/4371 cut-off events. [2024-06-27 18:30:45,147 INFO L125 PetriNetUnfolderBase]: For 195181/195534 co-relation queries the response was YES. [2024-06-27 18:30:45,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26779 conditions, 4371 events. 2408/4371 cut-off events. For 195181/195534 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 30375 event pairs, 443 based on Foata normal form. 148/4444 useless extension candidates. Maximal degree in co-relation 26609. Up to 3206 conditions per place. [2024-06-27 18:30:45,202 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 309 selfloop transitions, 199 changer transitions 0/517 dead transitions. [2024-06-27 18:30:45,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 517 transitions, 7317 flow [2024-06-27 18:30:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:30:45,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755244755244755 [2024-06-27 18:30:45,203 INFO L175 Difference]: Start difference. First operand has 346 places, 469 transitions, 5933 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:30:45,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 517 transitions, 7317 flow [2024-06-27 18:30:46,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 517 transitions, 7150 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:46,425 INFO L231 Difference]: Finished difference. Result has 352 places, 475 transitions, 6487 flow [2024-06-27 18:30:46,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5766, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6487, PETRI_PLACES=352, PETRI_TRANSITIONS=475} [2024-06-27 18:30:46,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 309 predicate places. [2024-06-27 18:30:46,426 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 475 transitions, 6487 flow [2024-06-27 18:30:46,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:46,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:46,426 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 18:30:46,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:30:46,426 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:46,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1966136514, now seen corresponding path program 1 times [2024-06-27 18:30:46,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:46,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110968207] [2024-06-27 18:30:46,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:46,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:47,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110968207] [2024-06-27 18:30:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110968207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:47,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:47,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:47,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19876250] [2024-06-27 18:30:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:47,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:47,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 475 transitions, 6487 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:47,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:47,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:47,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:48,370 INFO L124 PetriNetUnfolderBase]: 2427/4404 cut-off events. [2024-06-27 18:30:48,371 INFO L125 PetriNetUnfolderBase]: For 210649/211022 co-relation queries the response was YES. [2024-06-27 18:30:48,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27781 conditions, 4404 events. 2427/4404 cut-off events. For 210649/211022 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 30458 event pairs, 490 based on Foata normal form. 119/4443 useless extension candidates. Maximal degree in co-relation 27608. Up to 3554 conditions per place. [2024-06-27 18:30:48,423 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 436 selfloop transitions, 75 changer transitions 0/520 dead transitions. [2024-06-27 18:30:48,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 520 transitions, 7767 flow [2024-06-27 18:30:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:30:48,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755244755244755 [2024-06-27 18:30:48,424 INFO L175 Difference]: Start difference. First operand has 352 places, 475 transitions, 6487 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:30:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 520 transitions, 7767 flow [2024-06-27 18:30:49,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 520 transitions, 7476 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-27 18:30:49,316 INFO L231 Difference]: Finished difference. Result has 357 places, 477 transitions, 6403 flow [2024-06-27 18:30:49,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6198, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6403, PETRI_PLACES=357, PETRI_TRANSITIONS=477} [2024-06-27 18:30:49,317 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-27 18:30:49,317 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 477 transitions, 6403 flow [2024-06-27 18:30:49,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:49,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:49,317 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 18:30:49,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:30:49,317 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:49,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1655344457, now seen corresponding path program 4 times [2024-06-27 18:30:49,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:49,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730099371] [2024-06-27 18:30:49,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:50,178 INFO 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 18:30:50,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:50,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730099371] [2024-06-27 18:30:50,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730099371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:50,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:50,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:30:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790807706] [2024-06-27 18:30:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:50,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:30:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:30:50,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:30:50,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:30:50,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 477 transitions, 6403 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:50,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:50,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:30:50,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:51,514 INFO L124 PetriNetUnfolderBase]: 2231/4220 cut-off events. [2024-06-27 18:30:51,515 INFO L125 PetriNetUnfolderBase]: For 210178/210406 co-relation queries the response was YES. [2024-06-27 18:30:51,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26667 conditions, 4220 events. 2231/4220 cut-off events. For 210178/210406 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30261 event pairs, 393 based on Foata normal form. 132/4254 useless extension candidates. Maximal degree in co-relation 26492. Up to 3112 conditions per place. [2024-06-27 18:30:51,567 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 400 selfloop transitions, 69 changer transitions 0/516 dead transitions. [2024-06-27 18:30:51,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 516 transitions, 7559 flow [2024-06-27 18:30:51,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:51,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:30:51,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 18:30:51,569 INFO L175 Difference]: Start difference. First operand has 357 places, 477 transitions, 6403 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:30:51,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 516 transitions, 7559 flow [2024-06-27 18:30:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 516 transitions, 7372 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:52,446 INFO L231 Difference]: Finished difference. Result has 359 places, 480 transitions, 6409 flow [2024-06-27 18:30:52,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6216, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6409, PETRI_PLACES=359, PETRI_TRANSITIONS=480} [2024-06-27 18:30:52,447 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-27 18:30:52,447 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 480 transitions, 6409 flow [2024-06-27 18:30:52,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:52,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:52,447 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 18:30:52,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:30:52,447 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:52,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1577065722, now seen corresponding path program 2 times [2024-06-27 18:30:52,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:52,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032956979] [2024-06-27 18:30:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:52,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:53,190 INFO 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 18:30:53,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032956979] [2024-06-27 18:30:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032956979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273076184] [2024-06-27 18:30:53,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:53,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:53,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 480 transitions, 6409 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:53,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:53,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:53,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:54,457 INFO L124 PetriNetUnfolderBase]: 2491/4549 cut-off events. [2024-06-27 18:30:54,457 INFO L125 PetriNetUnfolderBase]: For 229227/229578 co-relation queries the response was YES. [2024-06-27 18:30:54,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29040 conditions, 4549 events. 2491/4549 cut-off events. For 229227/229578 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31782 event pairs, 482 based on Foata normal form. 115/4586 useless extension candidates. Maximal degree in co-relation 28863. Up to 3377 conditions per place. [2024-06-27 18:30:54,518 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 440 selfloop transitions, 81 changer transitions 0/530 dead transitions. [2024-06-27 18:30:54,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 530 transitions, 8011 flow [2024-06-27 18:30:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:30:54,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49417249417249415 [2024-06-27 18:30:54,520 INFO L175 Difference]: Start difference. First operand has 359 places, 480 transitions, 6409 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:30:54,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 530 transitions, 8011 flow [2024-06-27 18:30:55,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 530 transitions, 7845 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:55,702 INFO L231 Difference]: Finished difference. Result has 363 places, 484 transitions, 6514 flow [2024-06-27 18:30:55,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6514, PETRI_PLACES=363, PETRI_TRANSITIONS=484} [2024-06-27 18:30:55,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-27 18:30:55,703 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 484 transitions, 6514 flow [2024-06-27 18:30:55,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:55,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:55,704 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 18:30:55,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:30:55,704 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:55,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:55,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1569647112, now seen corresponding path program 3 times [2024-06-27 18:30:55,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:55,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094014274] [2024-06-27 18:30:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:55,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:56,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:56,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094014274] [2024-06-27 18:30:56,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094014274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:56,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:56,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:56,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15385186] [2024-06-27 18:30:56,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:56,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:56,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:56,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:56,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:56,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:56,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 484 transitions, 6514 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:56,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:56,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:56,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:57,704 INFO L124 PetriNetUnfolderBase]: 2513/4550 cut-off events. [2024-06-27 18:30:57,705 INFO L125 PetriNetUnfolderBase]: For 233291/233654 co-relation queries the response was YES. [2024-06-27 18:30:57,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29352 conditions, 4550 events. 2513/4550 cut-off events. For 233291/233654 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 31543 event pairs, 461 based on Foata normal form. 119/4592 useless extension candidates. Maximal degree in co-relation 29174. Up to 3395 conditions per place. [2024-06-27 18:30:57,765 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 430 selfloop transitions, 92 changer transitions 0/531 dead transitions. [2024-06-27 18:30:57,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 531 transitions, 8066 flow [2024-06-27 18:30:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:57,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 18:30:57,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:30:57,767 INFO L175 Difference]: Start difference. First operand has 363 places, 484 transitions, 6514 flow. Second operand 11 states and 209 transitions. [2024-06-27 18:30:57,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 531 transitions, 8066 flow [2024-06-27 18:30:58,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 531 transitions, 7913 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:58,909 INFO L231 Difference]: Finished difference. Result has 367 places, 486 transitions, 6604 flow [2024-06-27 18:30:58,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6367, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6604, PETRI_PLACES=367, PETRI_TRANSITIONS=486} [2024-06-27 18:30:58,909 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-27 18:30:58,910 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 486 transitions, 6604 flow [2024-06-27 18:30:58,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:58,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:58,910 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 18:30:58,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:30:58,910 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:58,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1662709778, now seen corresponding path program 4 times [2024-06-27 18:30:58,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:58,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709391260] [2024-06-27 18:30:58,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:58,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:59,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709391260] [2024-06-27 18:30:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709391260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010853739] [2024-06-27 18:30:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:59,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:59,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:30:59,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 486 transitions, 6604 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:59,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:59,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:30:59,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:01,038 INFO L124 PetriNetUnfolderBase]: 2535/4625 cut-off events. [2024-06-27 18:31:01,039 INFO L125 PetriNetUnfolderBase]: For 236502/236865 co-relation queries the response was YES. [2024-06-27 18:31:01,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29846 conditions, 4625 events. 2535/4625 cut-off events. For 236502/236865 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 32433 event pairs, 488 based on Foata normal form. 119/4667 useless extension candidates. Maximal degree in co-relation 29666. Up to 3413 conditions per place. [2024-06-27 18:31:01,106 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 435 selfloop transitions, 89 changer transitions 0/533 dead transitions. [2024-06-27 18:31:01,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 533 transitions, 8160 flow [2024-06-27 18:31:01,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 18:31:01,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184149184149184 [2024-06-27 18:31:01,109 INFO L175 Difference]: Start difference. First operand has 367 places, 486 transitions, 6604 flow. Second operand 11 states and 211 transitions. [2024-06-27 18:31:01,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 533 transitions, 8160 flow [2024-06-27 18:31:02,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 533 transitions, 7944 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:02,450 INFO L231 Difference]: Finished difference. Result has 370 places, 488 transitions, 6623 flow [2024-06-27 18:31:02,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6394, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6623, PETRI_PLACES=370, PETRI_TRANSITIONS=488} [2024-06-27 18:31:02,451 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 327 predicate places. [2024-06-27 18:31:02,451 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 488 transitions, 6623 flow [2024-06-27 18:31:02,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:02,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:02,452 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 18:31:02,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:31:02,452 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:02,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1662969248, now seen corresponding path program 5 times [2024-06-27 18:31:02,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:02,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777211512] [2024-06-27 18:31:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:02,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:03,219 INFO 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 18:31:03,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:03,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777211512] [2024-06-27 18:31:03,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777211512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:03,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:03,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:03,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409033624] [2024-06-27 18:31:03,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:03,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:03,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:03,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:03,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 488 transitions, 6623 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:03,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:03,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:03,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:04,511 INFO L124 PetriNetUnfolderBase]: 2531/4584 cut-off events. [2024-06-27 18:31:04,511 INFO L125 PetriNetUnfolderBase]: For 226337/226700 co-relation queries the response was YES. [2024-06-27 18:31:04,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29399 conditions, 4584 events. 2531/4584 cut-off events. For 226337/226700 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 31887 event pairs, 460 based on Foata normal form. 119/4626 useless extension candidates. Maximal degree in co-relation 29218. Up to 3410 conditions per place. [2024-06-27 18:31:04,573 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 432 selfloop transitions, 91 changer transitions 0/532 dead transitions. [2024-06-27 18:31:04,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 532 transitions, 7901 flow [2024-06-27 18:31:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 18:31:04,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:31:04,574 INFO L175 Difference]: Start difference. First operand has 370 places, 488 transitions, 6623 flow. Second operand 11 states and 209 transitions. [2024-06-27 18:31:04,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 532 transitions, 7901 flow [2024-06-27 18:31:05,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 532 transitions, 7652 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:05,891 INFO L231 Difference]: Finished difference. Result has 372 places, 488 transitions, 6561 flow [2024-06-27 18:31:05,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6374, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6561, PETRI_PLACES=372, PETRI_TRANSITIONS=488} [2024-06-27 18:31:05,892 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-27 18:31:05,892 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 488 transitions, 6561 flow [2024-06-27 18:31:05,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:05,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:05,892 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 18:31:05,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:31:05,892 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:05,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:05,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1662978889, now seen corresponding path program 1 times [2024-06-27 18:31:05,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:05,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338842991] [2024-06-27 18:31:05,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:05,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:06,745 INFO 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 18:31:06,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:06,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338842991] [2024-06-27 18:31:06,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338842991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:06,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:06,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:06,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945475371] [2024-06-27 18:31:06,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:06,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:06,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:06,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:06,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:06,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:06,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 488 transitions, 6561 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:06,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:06,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:06,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:08,111 INFO L124 PetriNetUnfolderBase]: 2559/4651 cut-off events. [2024-06-27 18:31:08,111 INFO L125 PetriNetUnfolderBase]: For 223781/224152 co-relation queries the response was YES. [2024-06-27 18:31:08,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29683 conditions, 4651 events. 2559/4651 cut-off events. For 223781/224152 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 32433 event pairs, 544 based on Foata normal form. 125/4693 useless extension candidates. Maximal degree in co-relation 29501. Up to 3875 conditions per place. [2024-06-27 18:31:08,168 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 470 selfloop transitions, 57 changer transitions 0/536 dead transitions. [2024-06-27 18:31:08,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 536 transitions, 8025 flow [2024-06-27 18:31:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:31:08,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568764568764569 [2024-06-27 18:31:08,169 INFO L175 Difference]: Start difference. First operand has 372 places, 488 transitions, 6561 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:31:08,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 536 transitions, 8025 flow [2024-06-27 18:31:09,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 536 transitions, 7821 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:31:09,374 INFO L231 Difference]: Finished difference. Result has 376 places, 498 transitions, 6741 flow [2024-06-27 18:31:09,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6357, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6741, PETRI_PLACES=376, PETRI_TRANSITIONS=498} [2024-06-27 18:31:09,374 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-27 18:31:09,374 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 498 transitions, 6741 flow [2024-06-27 18:31:09,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:09,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:09,375 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 18:31:09,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:31:09,375 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:09,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:09,375 INFO L85 PathProgramCache]: Analyzing trace with hash 773278733, now seen corresponding path program 5 times [2024-06-27 18:31:09,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:09,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347011669] [2024-06-27 18:31:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:09,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:10,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:10,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347011669] [2024-06-27 18:31:10,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347011669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:10,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:10,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:10,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458012691] [2024-06-27 18:31:10,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:10,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:10,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:10,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:10,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:31:10,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 498 transitions, 6741 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:10,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:10,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:31:10,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:11,698 INFO L124 PetriNetUnfolderBase]: 2354/4492 cut-off events. [2024-06-27 18:31:11,699 INFO L125 PetriNetUnfolderBase]: For 232278/232493 co-relation queries the response was YES. [2024-06-27 18:31:11,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28553 conditions, 4492 events. 2354/4492 cut-off events. For 232278/232493 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32803 event pairs, 382 based on Foata normal form. 105/4509 useless extension candidates. Maximal degree in co-relation 28366. Up to 3111 conditions per place. [2024-06-27 18:31:11,754 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 352 selfloop transitions, 136 changer transitions 0/536 dead transitions. [2024-06-27 18:31:11,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 536 transitions, 7945 flow [2024-06-27 18:31:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:31:11,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948717948717949 [2024-06-27 18:31:11,755 INFO L175 Difference]: Start difference. First operand has 376 places, 498 transitions, 6741 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:31:11,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 536 transitions, 7945 flow [2024-06-27 18:31:12,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 536 transitions, 7766 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-27 18:31:12,969 INFO L231 Difference]: Finished difference. Result has 383 places, 501 transitions, 6895 flow [2024-06-27 18:31:12,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6562, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6895, PETRI_PLACES=383, PETRI_TRANSITIONS=501} [2024-06-27 18:31:12,970 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-27 18:31:12,970 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 501 transitions, 6895 flow [2024-06-27 18:31:12,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:12,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:12,970 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 18:31:12,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:31:12,970 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:12,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1640109822, now seen corresponding path program 6 times [2024-06-27 18:31:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:12,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905658047] [2024-06-27 18:31:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:12,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:13,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:13,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905658047] [2024-06-27 18:31:13,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905658047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:13,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:13,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297763183] [2024-06-27 18:31:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:13,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:13,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:13,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:13,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 501 transitions, 6895 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:13,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:13,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:13,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:15,188 INFO L124 PetriNetUnfolderBase]: 2626/4799 cut-off events. [2024-06-27 18:31:15,189 INFO L125 PetriNetUnfolderBase]: For 254452/254758 co-relation queries the response was YES. [2024-06-27 18:31:15,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31516 conditions, 4799 events. 2626/4799 cut-off events. For 254452/254758 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 33916 event pairs, 490 based on Foata normal form. 105/4825 useless extension candidates. Maximal degree in co-relation 31326. Up to 3029 conditions per place. [2024-06-27 18:31:15,243 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 432 selfloop transitions, 110 changer transitions 0/551 dead transitions. [2024-06-27 18:31:15,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 551 transitions, 8581 flow [2024-06-27 18:31:15,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:15,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:31:15,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011655011655012 [2024-06-27 18:31:15,244 INFO L175 Difference]: Start difference. First operand has 383 places, 501 transitions, 6895 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:31:15,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 551 transitions, 8581 flow [2024-06-27 18:31:16,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 551 transitions, 8275 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:16,519 INFO L231 Difference]: Finished difference. Result has 387 places, 505 transitions, 6930 flow [2024-06-27 18:31:16,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6589, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6930, PETRI_PLACES=387, PETRI_TRANSITIONS=505} [2024-06-27 18:31:16,519 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-27 18:31:16,519 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 505 transitions, 6930 flow [2024-06-27 18:31:16,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:16,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:16,520 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 18:31:16,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:31:16,520 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:16,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash 780644054, now seen corresponding path program 7 times [2024-06-27 18:31:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:16,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623387256] [2024-06-27 18:31:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:16,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:17,283 INFO 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 18:31:17,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:17,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623387256] [2024-06-27 18:31:17,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623387256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:17,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:17,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:17,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306404311] [2024-06-27 18:31:17,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:17,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:17,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:17,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:17,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:17,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:17,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 505 transitions, 6930 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:17,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:17,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:17,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:18,660 INFO L124 PetriNetUnfolderBase]: 2674/4886 cut-off events. [2024-06-27 18:31:18,660 INFO L125 PetriNetUnfolderBase]: For 273673/273991 co-relation queries the response was YES. [2024-06-27 18:31:18,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32536 conditions, 4886 events. 2674/4886 cut-off events. For 273673/273991 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 34653 event pairs, 475 based on Foata normal form. 109/4915 useless extension candidates. Maximal degree in co-relation 32345. Up to 3068 conditions per place. [2024-06-27 18:31:18,730 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 440 selfloop transitions, 108 changer transitions 0/557 dead transitions. [2024-06-27 18:31:18,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 557 transitions, 8882 flow [2024-06-27 18:31:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 18:31:18,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 18:31:18,731 INFO L175 Difference]: Start difference. First operand has 387 places, 505 transitions, 6930 flow. Second operand 11 states and 220 transitions. [2024-06-27 18:31:18,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 557 transitions, 8882 flow [2024-06-27 18:31:20,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 557 transitions, 8671 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:20,556 INFO L231 Difference]: Finished difference. Result has 391 places, 509 transitions, 7060 flow [2024-06-27 18:31:20,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6743, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7060, PETRI_PLACES=391, PETRI_TRANSITIONS=509} [2024-06-27 18:31:20,557 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 348 predicate places. [2024-06-27 18:31:20,557 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 509 transitions, 7060 flow [2024-06-27 18:31:20,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:20,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:20,557 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 18:31:20,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:31:20,558 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:20,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash 780903524, now seen corresponding path program 8 times [2024-06-27 18:31:20,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:20,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314765335] [2024-06-27 18:31:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:21,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314765335] [2024-06-27 18:31:21,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314765335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:21,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:21,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458107436] [2024-06-27 18:31:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:21,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:21,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:21,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:21,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 509 transitions, 7060 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:21,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:21,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:21,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:22,720 INFO L124 PetriNetUnfolderBase]: 2690/4899 cut-off events. [2024-06-27 18:31:22,720 INFO L125 PetriNetUnfolderBase]: For 275683/276001 co-relation queries the response was YES. [2024-06-27 18:31:22,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32770 conditions, 4899 events. 2690/4899 cut-off events. For 275683/276001 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 34669 event pairs, 467 based on Foata normal form. 109/4927 useless extension candidates. Maximal degree in co-relation 32577. Up to 3080 conditions per place. [2024-06-27 18:31:22,789 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 439 selfloop transitions, 111 changer transitions 0/559 dead transitions. [2024-06-27 18:31:22,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 559 transitions, 8952 flow [2024-06-27 18:31:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-27 18:31:22,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104895104895105 [2024-06-27 18:31:22,790 INFO L175 Difference]: Start difference. First operand has 391 places, 509 transitions, 7060 flow. Second operand 11 states and 219 transitions. [2024-06-27 18:31:22,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 559 transitions, 8952 flow [2024-06-27 18:31:24,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 559 transitions, 8724 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:24,467 INFO L231 Difference]: Finished difference. Result has 395 places, 511 transitions, 7111 flow [2024-06-27 18:31:24,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6834, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7111, PETRI_PLACES=395, PETRI_TRANSITIONS=511} [2024-06-27 18:31:24,467 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 352 predicate places. [2024-06-27 18:31:24,467 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 511 transitions, 7111 flow [2024-06-27 18:31:24,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:24,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:24,468 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 18:31:24,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:31:24,468 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:24,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash 780912824, now seen corresponding path program 9 times [2024-06-27 18:31:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:24,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219140523] [2024-06-27 18:31:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:24,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:25,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:25,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219140523] [2024-06-27 18:31:25,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219140523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:25,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:25,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:25,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133988790] [2024-06-27 18:31:25,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:25,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:25,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:25,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 511 transitions, 7111 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:25,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:25,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:25,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:26,722 INFO L124 PetriNetUnfolderBase]: 2686/4899 cut-off events. [2024-06-27 18:31:26,722 INFO L125 PetriNetUnfolderBase]: For 265733/266055 co-relation queries the response was YES. [2024-06-27 18:31:26,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32468 conditions, 4899 events. 2686/4899 cut-off events. For 265733/266055 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 34765 event pairs, 467 based on Foata normal form. 113/4931 useless extension candidates. Maximal degree in co-relation 32274. Up to 3077 conditions per place. [2024-06-27 18:31:26,790 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 436 selfloop transitions, 113 changer transitions 0/558 dead transitions. [2024-06-27 18:31:26,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 558 transitions, 8715 flow [2024-06-27 18:31:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-27 18:31:26,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058275058275058 [2024-06-27 18:31:26,791 INFO L175 Difference]: Start difference. First operand has 395 places, 511 transitions, 7111 flow. Second operand 11 states and 217 transitions. [2024-06-27 18:31:26,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 558 transitions, 8715 flow [2024-06-27 18:31:28,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 558 transitions, 8418 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:28,501 INFO L231 Difference]: Finished difference. Result has 397 places, 511 transitions, 7045 flow [2024-06-27 18:31:28,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6814, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7045, PETRI_PLACES=397, PETRI_TRANSITIONS=511} [2024-06-27 18:31:28,502 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-27 18:31:28,502 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 511 transitions, 7045 flow [2024-06-27 18:31:28,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:28,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:28,502 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 18:31:28,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:31:28,502 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:28,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:28,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1843254801, now seen corresponding path program 2 times [2024-06-27 18:31:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:28,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070852322] [2024-06-27 18:31:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:28,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:29,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:29,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070852322] [2024-06-27 18:31:29,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070852322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:29,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:29,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:29,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78430335] [2024-06-27 18:31:29,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:29,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:29,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:29,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:29,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 511 transitions, 7045 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:29,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:29,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:29,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:30,803 INFO L124 PetriNetUnfolderBase]: 2702/4919 cut-off events. [2024-06-27 18:31:30,803 INFO L125 PetriNetUnfolderBase]: For 261858/262181 co-relation queries the response was YES. [2024-06-27 18:31:30,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32504 conditions, 4919 events. 2702/4919 cut-off events. For 261858/262181 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 34763 event pairs, 527 based on Foata normal form. 115/4954 useless extension candidates. Maximal degree in co-relation 32309. Up to 3977 conditions per place. [2024-06-27 18:31:30,877 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 484 selfloop transitions, 59 changer transitions 0/552 dead transitions. [2024-06-27 18:31:30,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 552 transitions, 8381 flow [2024-06-27 18:31:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:31:30,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 18:31:30,878 INFO L175 Difference]: Start difference. First operand has 397 places, 511 transitions, 7045 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:31:30,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 552 transitions, 8381 flow [2024-06-27 18:31:32,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 552 transitions, 8167 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:32,665 INFO L231 Difference]: Finished difference. Result has 399 places, 513 transitions, 7004 flow [2024-06-27 18:31:32,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6831, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7004, PETRI_PLACES=399, PETRI_TRANSITIONS=513} [2024-06-27 18:31:32,665 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 356 predicate places. [2024-06-27 18:31:32,665 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 513 transitions, 7004 flow [2024-06-27 18:31:32,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:32,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:32,666 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 18:31:32,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:31:32,666 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:32,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:32,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1039529828, now seen corresponding path program 1 times [2024-06-27 18:31:32,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:32,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043054645] [2024-06-27 18:31:32,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:33,569 INFO 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 18:31:33,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:33,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043054645] [2024-06-27 18:31:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043054645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:33,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:33,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:33,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580209196] [2024-06-27 18:31:33,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:33,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:33,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:33,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:31:33,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 513 transitions, 7004 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:33,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:33,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:31:33,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:35,031 INFO L124 PetriNetUnfolderBase]: 2604/4816 cut-off events. [2024-06-27 18:31:35,031 INFO L125 PetriNetUnfolderBase]: For 275184/275425 co-relation queries the response was YES. [2024-06-27 18:31:35,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31508 conditions, 4816 events. 2604/4816 cut-off events. For 275184/275425 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 34653 event pairs, 535 based on Foata normal form. 139/4858 useless extension candidates. Maximal degree in co-relation 31312. Up to 3747 conditions per place. [2024-06-27 18:31:35,096 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 464 selfloop transitions, 27 changer transitions 0/553 dead transitions. [2024-06-27 18:31:35,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 553 transitions, 8220 flow [2024-06-27 18:31:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:35,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:31:35,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755244755244755 [2024-06-27 18:31:35,097 INFO L175 Difference]: Start difference. First operand has 399 places, 513 transitions, 7004 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:31:35,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 553 transitions, 8220 flow [2024-06-27 18:31:36,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 553 transitions, 8069 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:36,766 INFO L231 Difference]: Finished difference. Result has 401 places, 514 transitions, 6945 flow [2024-06-27 18:31:36,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6853, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6945, PETRI_PLACES=401, PETRI_TRANSITIONS=514} [2024-06-27 18:31:36,767 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-27 18:31:36,767 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 514 transitions, 6945 flow [2024-06-27 18:31:36,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:36,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:36,767 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 18:31:36,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:31:36,767 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:36,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1039529425, now seen corresponding path program 3 times [2024-06-27 18:31:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:36,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801729716] [2024-06-27 18:31:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:37,702 INFO 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 18:31:37,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:37,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801729716] [2024-06-27 18:31:37,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801729716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:37,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:37,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714207187] [2024-06-27 18:31:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:37,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:37,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:37,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:37,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 514 transitions, 6945 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:37,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:37,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:37,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:39,316 INFO L124 PetriNetUnfolderBase]: 2757/4996 cut-off events. [2024-06-27 18:31:39,316 INFO L125 PetriNetUnfolderBase]: For 278604/278930 co-relation queries the response was YES. [2024-06-27 18:31:39,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33051 conditions, 4996 events. 2757/4996 cut-off events. For 278604/278930 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 35295 event pairs, 528 based on Foata normal form. 128/5037 useless extension candidates. Maximal degree in co-relation 32854. Up to 4006 conditions per place. [2024-06-27 18:31:39,379 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 482 selfloop transitions, 73 changer transitions 0/564 dead transitions. [2024-06-27 18:31:39,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 564 transitions, 8643 flow [2024-06-27 18:31:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:31:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:31:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:31:39,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2024-06-27 18:31:39,380 INFO L175 Difference]: Start difference. First operand has 401 places, 514 transitions, 6945 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:31:39,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 564 transitions, 8643 flow [2024-06-27 18:31:40,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 564 transitions, 8561 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:40,991 INFO L231 Difference]: Finished difference. Result has 405 places, 520 transitions, 7152 flow [2024-06-27 18:31:40,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6863, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7152, PETRI_PLACES=405, PETRI_TRANSITIONS=520} [2024-06-27 18:31:40,992 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-27 18:31:40,992 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 520 transitions, 7152 flow [2024-06-27 18:31:40,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:40,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:40,993 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 18:31:40,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:31:40,993 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:40,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2092336360, now seen corresponding path program 10 times [2024-06-27 18:31:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:40,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561332198] [2024-06-27 18:31:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:40,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:41,763 INFO 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 18:31:41,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:41,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561332198] [2024-06-27 18:31:41,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561332198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:41,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:41,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:41,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600201496] [2024-06-27 18:31:41,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:41,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:41,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:41,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:41,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:41,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:41,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 520 transitions, 7152 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:41,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:41,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:41,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:43,149 INFO L124 PetriNetUnfolderBase]: 2770/4972 cut-off events. [2024-06-27 18:31:43,149 INFO L125 PetriNetUnfolderBase]: For 290358/290742 co-relation queries the response was YES. [2024-06-27 18:31:43,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33361 conditions, 4972 events. 2770/4972 cut-off events. For 290358/290742 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 34927 event pairs, 453 based on Foata normal form. 123/5012 useless extension candidates. Maximal degree in co-relation 33162. Up to 3190 conditions per place. [2024-06-27 18:31:43,218 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 436 selfloop transitions, 122 changer transitions 0/567 dead transitions. [2024-06-27 18:31:43,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 567 transitions, 8814 flow [2024-06-27 18:31:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:31:43,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988344988344988 [2024-06-27 18:31:43,220 INFO L175 Difference]: Start difference. First operand has 405 places, 520 transitions, 7152 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:31:43,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 567 transitions, 8814 flow [2024-06-27 18:31:45,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 567 transitions, 8680 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:45,256 INFO L231 Difference]: Finished difference. Result has 408 places, 522 transitions, 7319 flow [2024-06-27 18:31:45,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7018, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7319, PETRI_PLACES=408, PETRI_TRANSITIONS=522} [2024-06-27 18:31:45,257 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-06-27 18:31:45,257 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 522 transitions, 7319 flow [2024-06-27 18:31:45,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:45,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:45,257 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 18:31:45,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:31:45,258 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:45,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:45,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1039517924, now seen corresponding path program 11 times [2024-06-27 18:31:45,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:45,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364520105] [2024-06-27 18:31:45,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:45,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:46,014 INFO 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 18:31:46,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364520105] [2024-06-27 18:31:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364520105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:46,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:46,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:46,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142902475] [2024-06-27 18:31:46,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:46,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:46,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:46,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 522 transitions, 7319 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:46,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:46,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:46,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:47,482 INFO L124 PetriNetUnfolderBase]: 2792/5070 cut-off events. [2024-06-27 18:31:47,482 INFO L125 PetriNetUnfolderBase]: For 296015/296371 co-relation queries the response was YES. [2024-06-27 18:31:47,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34153 conditions, 5070 events. 2792/5070 cut-off events. For 296015/296371 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 36102 event pairs, 409 based on Foata normal form. 139/5132 useless extension candidates. Maximal degree in co-relation 33952. Up to 3208 conditions per place. [2024-06-27 18:31:47,553 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 420 selfloop transitions, 140 changer transitions 0/569 dead transitions. [2024-06-27 18:31:47,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 569 transitions, 8991 flow [2024-06-27 18:31:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:31:47,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49417249417249415 [2024-06-27 18:31:47,555 INFO L175 Difference]: Start difference. First operand has 408 places, 522 transitions, 7319 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:31:47,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 569 transitions, 8991 flow [2024-06-27 18:31:49,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 569 transitions, 8648 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-27 18:31:49,575 INFO L231 Difference]: Finished difference. Result has 408 places, 524 transitions, 7317 flow [2024-06-27 18:31:49,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6984, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7317, PETRI_PLACES=408, PETRI_TRANSITIONS=524} [2024-06-27 18:31:49,576 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 365 predicate places. [2024-06-27 18:31:49,576 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 524 transitions, 7317 flow [2024-06-27 18:31:49,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:49,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:49,576 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 18:31:49,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:31:49,576 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:49,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1030263494, now seen corresponding path program 12 times [2024-06-27 18:31:49,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:49,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324429615] [2024-06-27 18:31:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:50,355 INFO 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 18:31:50,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:50,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324429615] [2024-06-27 18:31:50,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324429615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:50,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:50,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:50,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784108384] [2024-06-27 18:31:50,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:50,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:50,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:50,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:50,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:50,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 524 transitions, 7317 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:50,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:50,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:50,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:51,801 INFO L124 PetriNetUnfolderBase]: 2840/5104 cut-off events. [2024-06-27 18:31:51,801 INFO L125 PetriNetUnfolderBase]: For 314416/314800 co-relation queries the response was YES. [2024-06-27 18:31:51,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34991 conditions, 5104 events. 2840/5104 cut-off events. For 314416/314800 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 36131 event pairs, 470 based on Foata normal form. 123/5142 useless extension candidates. Maximal degree in co-relation 34789. Up to 3247 conditions per place. [2024-06-27 18:31:51,872 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 440 selfloop transitions, 126 changer transitions 0/575 dead transitions. [2024-06-27 18:31:51,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 575 transitions, 9311 flow [2024-06-27 18:31:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-27 18:31:51,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058275058275058 [2024-06-27 18:31:51,874 INFO L175 Difference]: Start difference. First operand has 408 places, 524 transitions, 7317 flow. Second operand 11 states and 217 transitions. [2024-06-27 18:31:51,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 575 transitions, 9311 flow [2024-06-27 18:31:54,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 575 transitions, 9023 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:54,008 INFO L231 Difference]: Finished difference. Result has 411 places, 528 transitions, 7390 flow [2024-06-27 18:31:54,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7041, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7390, PETRI_PLACES=411, PETRI_TRANSITIONS=528} [2024-06-27 18:31:54,009 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 368 predicate places. [2024-06-27 18:31:54,009 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 528 transitions, 7390 flow [2024-06-27 18:31:54,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:54,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:54,009 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 18:31:54,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:31:54,009 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:54,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:54,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1039201135, now seen corresponding path program 4 times [2024-06-27 18:31:54,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:54,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108249240] [2024-06-27 18:31:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:54,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:54,865 INFO 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 18:31:54,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:54,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108249240] [2024-06-27 18:31:54,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108249240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:54,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:54,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:54,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83913877] [2024-06-27 18:31:54,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:54,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:54,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:54,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:54,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:54,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 528 transitions, 7390 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:54,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:54,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:54,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:56,359 INFO L124 PetriNetUnfolderBase]: 2896/5279 cut-off events. [2024-06-27 18:31:56,360 INFO L125 PetriNetUnfolderBase]: For 315936/316278 co-relation queries the response was YES. [2024-06-27 18:31:56,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36090 conditions, 5279 events. 2896/5279 cut-off events. For 315936/316278 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 37998 event pairs, 566 based on Foata normal form. 125/5309 useless extension candidates. Maximal degree in co-relation 35887. Up to 4223 conditions per place. [2024-06-27 18:31:56,431 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 490 selfloop transitions, 86 changer transitions 0/585 dead transitions. [2024-06-27 18:31:56,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 585 transitions, 9248 flow [2024-06-27 18:31:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:56,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:31:56,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662004662004662 [2024-06-27 18:31:56,432 INFO L175 Difference]: Start difference. First operand has 411 places, 528 transitions, 7390 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:31:56,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 585 transitions, 9248 flow [2024-06-27 18:31:58,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 585 transitions, 8987 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:31:58,635 INFO L231 Difference]: Finished difference. Result has 419 places, 544 transitions, 7823 flow [2024-06-27 18:31:58,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7129, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7823, PETRI_PLACES=419, PETRI_TRANSITIONS=544} [2024-06-27 18:31:58,636 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 376 predicate places. [2024-06-27 18:31:58,636 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 544 transitions, 7823 flow [2024-06-27 18:31:58,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:58,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:58,636 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 18:31:58,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:31:58,637 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:58,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:58,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1039200794, now seen corresponding path program 13 times [2024-06-27 18:31:58,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:58,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813329231] [2024-06-27 18:31:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:58,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:59,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:59,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813329231] [2024-06-27 18:31:59,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813329231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:59,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:59,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725247820] [2024-06-27 18:31:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:59,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:59,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:59,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:31:59,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 544 transitions, 7823 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:59,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:59,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:31:59,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:01,108 INFO L124 PetriNetUnfolderBase]: 2915/5236 cut-off events. [2024-06-27 18:32:01,108 INFO L125 PetriNetUnfolderBase]: For 330043/330472 co-relation queries the response was YES. [2024-06-27 18:32:01,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36241 conditions, 5236 events. 2915/5236 cut-off events. For 330043/330472 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 37240 event pairs, 453 based on Foata normal form. 137/5282 useless extension candidates. Maximal degree in co-relation 36033. Up to 3344 conditions per place. [2024-06-27 18:32:01,176 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 450 selfloop transitions, 134 changer transitions 0/593 dead transitions. [2024-06-27 18:32:01,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 593 transitions, 9805 flow [2024-06-27 18:32:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 18:32:01,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034965034965035 [2024-06-27 18:32:01,178 INFO L175 Difference]: Start difference. First operand has 419 places, 544 transitions, 7823 flow. Second operand 11 states and 216 transitions. [2024-06-27 18:32:01,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 593 transitions, 9805 flow [2024-06-27 18:32:03,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 593 transitions, 9518 flow, removed 125 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:03,610 INFO L231 Difference]: Finished difference. Result has 427 places, 546 transitions, 7857 flow [2024-06-27 18:32:03,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7536, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7857, PETRI_PLACES=427, PETRI_TRANSITIONS=546} [2024-06-27 18:32:03,610 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-27 18:32:03,610 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 546 transitions, 7857 flow [2024-06-27 18:32:03,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:03,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:03,611 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 18:32:03,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:32:03,611 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:03,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2101533130, now seen corresponding path program 14 times [2024-06-27 18:32:03,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:03,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42778839] [2024-06-27 18:32:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:03,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:04,358 INFO 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 18:32:04,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:04,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42778839] [2024-06-27 18:32:04,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42778839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:04,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:04,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:04,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439459579] [2024-06-27 18:32:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:04,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:04,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:04,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 546 transitions, 7857 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:04,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:04,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:04,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:06,121 INFO L124 PetriNetUnfolderBase]: 2911/5254 cut-off events. [2024-06-27 18:32:06,122 INFO L125 PetriNetUnfolderBase]: For 314622/315049 co-relation queries the response was YES. [2024-06-27 18:32:06,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36203 conditions, 5254 events. 2911/5254 cut-off events. For 314622/315049 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 37557 event pairs, 449 based on Foata normal form. 148/5312 useless extension candidates. Maximal degree in co-relation 35993. Up to 3341 conditions per place. [2024-06-27 18:32:06,186 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 447 selfloop transitions, 135 changer transitions 0/591 dead transitions. [2024-06-27 18:32:06,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 591 transitions, 9525 flow [2024-06-27 18:32:06,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 18:32:06,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965034965034965 [2024-06-27 18:32:06,187 INFO L175 Difference]: Start difference. First operand has 427 places, 546 transitions, 7857 flow. Second operand 11 states and 213 transitions. [2024-06-27 18:32:06,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 591 transitions, 9525 flow [2024-06-27 18:32:08,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 591 transitions, 9134 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 18:32:08,161 INFO L231 Difference]: Finished difference. Result has 428 places, 546 transitions, 7741 flow [2024-06-27 18:32:08,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7466, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7741, PETRI_PLACES=428, PETRI_TRANSITIONS=546} [2024-06-27 18:32:08,161 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-27 18:32:08,162 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 546 transitions, 7741 flow [2024-06-27 18:32:08,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:08,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:08,162 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 18:32:08,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:32:08,162 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:08,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1030263835, now seen corresponding path program 5 times [2024-06-27 18:32:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:08,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152928741] [2024-06-27 18:32:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:08,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:09,015 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 18:32:09,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:09,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152928741] [2024-06-27 18:32:09,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152928741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:09,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:09,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:09,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253661968] [2024-06-27 18:32:09,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:09,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:09,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:09,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 546 transitions, 7741 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:09,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:09,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:09,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:10,521 INFO L124 PetriNetUnfolderBase]: 2928/5326 cut-off events. [2024-06-27 18:32:10,521 INFO L125 PetriNetUnfolderBase]: For 302017/302389 co-relation queries the response was YES. [2024-06-27 18:32:10,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36111 conditions, 5326 events. 2928/5326 cut-off events. For 302017/302389 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 38371 event pairs, 588 based on Foata normal form. 135/5358 useless extension candidates. Maximal degree in co-relation 35900. Up to 4266 conditions per place. [2024-06-27 18:32:10,609 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 499 selfloop transitions, 88 changer transitions 0/596 dead transitions. [2024-06-27 18:32:10,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 596 transitions, 9389 flow [2024-06-27 18:32:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:32:10,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:32:10,611 INFO L175 Difference]: Start difference. First operand has 428 places, 546 transitions, 7741 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:32:10,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 596 transitions, 9389 flow [2024-06-27 18:32:12,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 596 transitions, 9092 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 18:32:12,547 INFO L231 Difference]: Finished difference. Result has 432 places, 555 transitions, 7902 flow [2024-06-27 18:32:12,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7444, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7902, PETRI_PLACES=432, PETRI_TRANSITIONS=555} [2024-06-27 18:32:12,548 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-27 18:32:12,548 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 555 transitions, 7902 flow [2024-06-27 18:32:12,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:12,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:12,548 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 18:32:12,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:32:12,549 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:12,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:12,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1087247436, now seen corresponding path program 15 times [2024-06-27 18:32:12,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:12,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072846773] [2024-06-27 18:32:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:12,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:13,299 INFO 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 18:32:13,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:13,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072846773] [2024-06-27 18:32:13,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072846773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:13,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:13,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:13,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365347694] [2024-06-27 18:32:13,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:13,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:13,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:13,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:13,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:13,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:13,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 555 transitions, 7902 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:13,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:13,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:13,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:14,870 INFO L124 PetriNetUnfolderBase]: 2921/5239 cut-off events. [2024-06-27 18:32:14,870 INFO L125 PetriNetUnfolderBase]: For 295140/295557 co-relation queries the response was YES. [2024-06-27 18:32:14,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35478 conditions, 5239 events. 2921/5239 cut-off events. For 295140/295557 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 37208 event pairs, 473 based on Foata normal form. 138/5280 useless extension candidates. Maximal degree in co-relation 35263. Up to 3358 conditions per place. [2024-06-27 18:32:14,947 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 464 selfloop transitions, 127 changer transitions 0/600 dead transitions. [2024-06-27 18:32:14,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 600 transitions, 9342 flow [2024-06-27 18:32:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:14,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 18:32:14,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034965034965035 [2024-06-27 18:32:14,948 INFO L175 Difference]: Start difference. First operand has 432 places, 555 transitions, 7902 flow. Second operand 11 states and 216 transitions. [2024-06-27 18:32:14,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 600 transitions, 9342 flow [2024-06-27 18:32:17,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 600 transitions, 9066 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-27 18:32:17,360 INFO L231 Difference]: Finished difference. Result has 438 places, 555 transitions, 7885 flow [2024-06-27 18:32:17,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7626, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7885, PETRI_PLACES=438, PETRI_TRANSITIONS=555} [2024-06-27 18:32:17,361 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-27 18:32:17,361 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 555 transitions, 7885 flow [2024-06-27 18:32:17,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:17,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:17,362 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 18:32:17,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:32:17,362 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:17,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash -341229619, now seen corresponding path program 6 times [2024-06-27 18:32:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:17,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179676359] [2024-06-27 18:32:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:17,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:18,293 INFO 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 18:32:18,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:18,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179676359] [2024-06-27 18:32:18,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179676359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:18,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:18,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:32:18,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463925114] [2024-06-27 18:32:18,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:18,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:32:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:32:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:32:18,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:32:18,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 555 transitions, 7885 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:18,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:18,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:32:18,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:19,882 INFO L124 PetriNetUnfolderBase]: 2724/4994 cut-off events. [2024-06-27 18:32:19,882 INFO L125 PetriNetUnfolderBase]: For 296269/296529 co-relation queries the response was YES. [2024-06-27 18:32:19,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34378 conditions, 4994 events. 2724/4994 cut-off events. For 296269/296529 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 36014 event pairs, 391 based on Foata normal form. 131/4982 useless extension candidates. Maximal degree in co-relation 34162. Up to 3776 conditions per place. [2024-06-27 18:32:19,961 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 466 selfloop transitions, 76 changer transitions 0/592 dead transitions. [2024-06-27 18:32:19,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 592 transitions, 9205 flow [2024-06-27 18:32:19,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:19,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:32:19,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2024-06-27 18:32:19,963 INFO L175 Difference]: Start difference. First operand has 438 places, 555 transitions, 7885 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:32:19,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 592 transitions, 9205 flow [2024-06-27 18:32:22,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 592 transitions, 8925 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:32:22,126 INFO L231 Difference]: Finished difference. Result has 438 places, 558 transitions, 7822 flow [2024-06-27 18:32:22,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7605, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7822, PETRI_PLACES=438, PETRI_TRANSITIONS=558} [2024-06-27 18:32:22,127 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-27 18:32:22,127 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 558 transitions, 7822 flow [2024-06-27 18:32:22,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:22,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:22,127 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 18:32:22,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:32:22,127 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:22,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash -84254158, now seen corresponding path program 16 times [2024-06-27 18:32:22,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:22,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428368414] [2024-06-27 18:32:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:22,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:22,926 INFO 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 18:32:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428368414] [2024-06-27 18:32:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428368414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:22,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:22,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:22,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504159233] [2024-06-27 18:32:22,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:22,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:22,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:22,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:22,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:23,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:23,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 558 transitions, 7822 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:23,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:23,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:23,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:24,567 INFO L124 PetriNetUnfolderBase]: 3092/5571 cut-off events. [2024-06-27 18:32:24,567 INFO L125 PetriNetUnfolderBase]: For 389445/389745 co-relation queries the response was YES. [2024-06-27 18:32:24,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39416 conditions, 5571 events. 3092/5571 cut-off events. For 389445/389745 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 40191 event pairs, 530 based on Foata normal form. 100/5569 useless extension candidates. Maximal degree in co-relation 39198. Up to 2603 conditions per place. [2024-06-27 18:32:24,652 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 449 selfloop transitions, 164 changer transitions 0/622 dead transitions. [2024-06-27 18:32:24,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 622 transitions, 11028 flow [2024-06-27 18:32:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-27 18:32:24,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361305361305362 [2024-06-27 18:32:24,654 INFO L175 Difference]: Start difference. First operand has 438 places, 558 transitions, 7822 flow. Second operand 11 states and 230 transitions. [2024-06-27 18:32:24,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 622 transitions, 11028 flow [2024-06-27 18:32:27,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 622 transitions, 10838 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:27,932 INFO L231 Difference]: Finished difference. Result has 442 places, 570 transitions, 8329 flow [2024-06-27 18:32:27,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7632, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8329, PETRI_PLACES=442, PETRI_TRANSITIONS=570} [2024-06-27 18:32:27,933 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-27 18:32:27,933 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 570 transitions, 8329 flow [2024-06-27 18:32:27,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:27,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:27,933 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 18:32:27,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:32:27,933 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:27,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash 741932452, now seen corresponding path program 17 times [2024-06-27 18:32:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183257453] [2024-06-27 18:32:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:28,720 INFO 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 18:32:28,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:28,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183257453] [2024-06-27 18:32:28,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183257453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:28,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:28,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:28,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432619179] [2024-06-27 18:32:28,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:28,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:28,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:28,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:28,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:28,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 570 transitions, 8329 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:28,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:28,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:28,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:30,603 INFO L124 PetriNetUnfolderBase]: 3166/5723 cut-off events. [2024-06-27 18:32:30,604 INFO L125 PetriNetUnfolderBase]: For 435198/435462 co-relation queries the response was YES. [2024-06-27 18:32:30,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41815 conditions, 5723 events. 3166/5723 cut-off events. For 435198/435462 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 41593 event pairs, 461 based on Foata normal form. 85/5708 useless extension candidates. Maximal degree in co-relation 41596. Up to 2663 conditions per place. [2024-06-27 18:32:30,690 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 434 selfloop transitions, 182 changer transitions 0/625 dead transitions. [2024-06-27 18:32:30,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 625 transitions, 11093 flow [2024-06-27 18:32:30,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-27 18:32:30,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221445221445221 [2024-06-27 18:32:30,691 INFO L175 Difference]: Start difference. First operand has 442 places, 570 transitions, 8329 flow. Second operand 11 states and 224 transitions. [2024-06-27 18:32:30,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 625 transitions, 11093 flow [2024-06-27 18:32:34,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 625 transitions, 10799 flow, removed 81 selfloop flow, removed 3 redundant places. [2024-06-27 18:32:34,114 INFO L231 Difference]: Finished difference. Result has 450 places, 576 transitions, 8596 flow [2024-06-27 18:32:34,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8071, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8596, PETRI_PLACES=450, PETRI_TRANSITIONS=576} [2024-06-27 18:32:34,115 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-27 18:32:34,115 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 576 transitions, 8596 flow [2024-06-27 18:32:34,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:34,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:34,115 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 18:32:34,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:32:34,115 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:34,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash 923294513, now seen corresponding path program 6 times [2024-06-27 18:32:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:34,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462762743] [2024-06-27 18:32:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:34,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:35,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:35,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462762743] [2024-06-27 18:32:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462762743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:35,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:35,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810994075] [2024-06-27 18:32:35,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:35,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:35,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:35,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:35,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:35,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 576 transitions, 8596 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:35,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:35,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:35,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:36,952 INFO L124 PetriNetUnfolderBase]: 3182/5821 cut-off events. [2024-06-27 18:32:36,953 INFO L125 PetriNetUnfolderBase]: For 429203/429414 co-relation queries the response was YES. [2024-06-27 18:32:37,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42708 conditions, 5821 events. 3182/5821 cut-off events. For 429203/429414 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 43001 event pairs, 503 based on Foata normal form. 103/5830 useless extension candidates. Maximal degree in co-relation 42487. Up to 4280 conditions per place. [2024-06-27 18:32:37,036 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 494 selfloop transitions, 135 changer transitions 0/638 dead transitions. [2024-06-27 18:32:37,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 638 transitions, 10712 flow [2024-06-27 18:32:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:32:37,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801864801864802 [2024-06-27 18:32:37,038 INFO L175 Difference]: Start difference. First operand has 450 places, 576 transitions, 8596 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:32:37,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 638 transitions, 10712 flow [2024-06-27 18:32:40,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 638 transitions, 10303 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 18:32:40,556 INFO L231 Difference]: Finished difference. Result has 459 places, 591 transitions, 9041 flow [2024-06-27 18:32:40,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8187, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9041, PETRI_PLACES=459, PETRI_TRANSITIONS=591} [2024-06-27 18:32:40,557 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-27 18:32:40,557 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 591 transitions, 9041 flow [2024-06-27 18:32:40,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:40,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:40,557 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 18:32:40,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:32:40,557 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:40,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash -333595528, now seen corresponding path program 18 times [2024-06-27 18:32:40,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:40,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777659831] [2024-06-27 18:32:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:40,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777659831] [2024-06-27 18:32:41,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777659831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:41,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:41,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:41,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095778997] [2024-06-27 18:32:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:41,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:41,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:41,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:41,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:41,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:41,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 591 transitions, 9041 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:41,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:41,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:41,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:43,093 INFO L124 PetriNetUnfolderBase]: 3212/5749 cut-off events. [2024-06-27 18:32:43,093 INFO L125 PetriNetUnfolderBase]: For 445449/445780 co-relation queries the response was YES. [2024-06-27 18:32:43,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42942 conditions, 5749 events. 3212/5749 cut-off events. For 445449/445780 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 41438 event pairs, 536 based on Foata normal form. 117/5761 useless extension candidates. Maximal degree in co-relation 42715. Up to 2716 conditions per place. [2024-06-27 18:32:43,183 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 451 selfloop transitions, 181 changer transitions 0/641 dead transitions. [2024-06-27 18:32:43,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 641 transitions, 11185 flow [2024-06-27 18:32:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-27 18:32:43,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-27 18:32:43,185 INFO L175 Difference]: Start difference. First operand has 459 places, 591 transitions, 9041 flow. Second operand 11 states and 221 transitions. [2024-06-27 18:32:43,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 641 transitions, 11185 flow [2024-06-27 18:32:46,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 641 transitions, 10868 flow, removed 143 selfloop flow, removed 2 redundant places. [2024-06-27 18:32:46,698 INFO L231 Difference]: Finished difference. Result has 468 places, 593 transitions, 9143 flow [2024-06-27 18:32:46,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8724, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9143, PETRI_PLACES=468, PETRI_TRANSITIONS=593} [2024-06-27 18:32:46,699 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 425 predicate places. [2024-06-27 18:32:46,699 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 593 transitions, 9143 flow [2024-06-27 18:32:46,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:46,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:46,699 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 18:32:46,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:32:46,700 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:46,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:46,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1989625382, now seen corresponding path program 19 times [2024-06-27 18:32:46,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:46,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707006742] [2024-06-27 18:32:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:46,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:47,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:47,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707006742] [2024-06-27 18:32:47,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707006742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:47,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:47,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:47,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761219064] [2024-06-27 18:32:47,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:47,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:47,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:47,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 593 transitions, 9143 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:47,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:47,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:47,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:49,356 INFO L124 PetriNetUnfolderBase]: 3228/5816 cut-off events. [2024-06-27 18:32:49,356 INFO L125 PetriNetUnfolderBase]: For 447794/448083 co-relation queries the response was YES. [2024-06-27 18:32:49,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43848 conditions, 5816 events. 3228/5816 cut-off events. For 447794/448083 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 42257 event pairs, 467 based on Foata normal form. 99/5810 useless extension candidates. Maximal degree in co-relation 43619. Up to 2728 conditions per place. [2024-06-27 18:32:49,454 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 437 selfloop transitions, 195 changer transitions 0/641 dead transitions. [2024-06-27 18:32:49,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 641 transitions, 11269 flow [2024-06-27 18:32:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-27 18:32:49,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081585081585082 [2024-06-27 18:32:49,455 INFO L175 Difference]: Start difference. First operand has 468 places, 593 transitions, 9143 flow. Second operand 11 states and 218 transitions. [2024-06-27 18:32:49,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 641 transitions, 11269 flow [2024-06-27 18:32:52,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 641 transitions, 10892 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:32:52,971 INFO L231 Difference]: Finished difference. Result has 471 places, 595 transitions, 9215 flow [2024-06-27 18:32:52,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8770, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9215, PETRI_PLACES=471, PETRI_TRANSITIONS=595} [2024-06-27 18:32:52,972 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 428 predicate places. [2024-06-27 18:32:52,972 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 595 transitions, 9215 flow [2024-06-27 18:32:52,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:52,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:52,972 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 18:32:52,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:32:52,972 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:52,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1172376072, now seen corresponding path program 20 times [2024-06-27 18:32:52,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:52,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405335350] [2024-06-27 18:32:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:52,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:53,754 INFO 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 18:32:53,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:53,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405335350] [2024-06-27 18:32:53,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405335350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:53,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:53,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:53,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439012383] [2024-06-27 18:32:53,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:53,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:53,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:53,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:53,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:53,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:32:53,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 595 transitions, 9215 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:53,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:53,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:32:53,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:55,654 INFO L124 PetriNetUnfolderBase]: 3206/5757 cut-off events. [2024-06-27 18:32:55,655 INFO L125 PetriNetUnfolderBase]: For 435250/435580 co-relation queries the response was YES. [2024-06-27 18:32:55,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43208 conditions, 5757 events. 3206/5757 cut-off events. For 435250/435580 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 41863 event pairs, 538 based on Foata normal form. 113/5761 useless extension candidates. Maximal degree in co-relation 42978. Up to 2691 conditions per place. [2024-06-27 18:32:55,749 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 458 selfloop transitions, 177 changer transitions 0/644 dead transitions. [2024-06-27 18:32:55,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 644 transitions, 11595 flow [2024-06-27 18:32:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-27 18:32:55,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244755244755245 [2024-06-27 18:32:55,750 INFO L175 Difference]: Start difference. First operand has 471 places, 595 transitions, 9215 flow. Second operand 11 states and 225 transitions. [2024-06-27 18:32:55,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 644 transitions, 11595 flow [2024-06-27 18:32:59,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 644 transitions, 11105 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-27 18:32:59,200 INFO L231 Difference]: Finished difference. Result has 473 places, 595 transitions, 9084 flow [2024-06-27 18:32:59,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8725, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9084, PETRI_PLACES=473, PETRI_TRANSITIONS=595} [2024-06-27 18:32:59,200 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 430 predicate places. [2024-06-27 18:32:59,201 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 595 transitions, 9084 flow [2024-06-27 18:32:59,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:59,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:59,201 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 18:32:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:32:59,201 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:59,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:59,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1989894152, now seen corresponding path program 21 times [2024-06-27 18:32:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:59,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498301711] [2024-06-27 18:32:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:32:59,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:00,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498301711] [2024-06-27 18:33:00,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498301711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:00,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:00,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610270426] [2024-06-27 18:33:00,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:00,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:00,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:00,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:00,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:00,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 595 transitions, 9084 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:00,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:00,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:00,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:01,860 INFO L124 PetriNetUnfolderBase]: 3246/5849 cut-off events. [2024-06-27 18:33:01,861 INFO L125 PetriNetUnfolderBase]: For 438258/438547 co-relation queries the response was YES. [2024-06-27 18:33:01,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43460 conditions, 5849 events. 3246/5849 cut-off events. For 438258/438547 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 42567 event pairs, 472 based on Foata normal form. 99/5844 useless extension candidates. Maximal degree in co-relation 43229. Up to 2743 conditions per place. [2024-06-27 18:33:01,958 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 445 selfloop transitions, 191 changer transitions 0/645 dead transitions. [2024-06-27 18:33:01,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 645 transitions, 11512 flow [2024-06-27 18:33:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-27 18:33:01,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-27 18:33:01,960 INFO L175 Difference]: Start difference. First operand has 473 places, 595 transitions, 9084 flow. Second operand 11 states and 221 transitions. [2024-06-27 18:33:01,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 645 transitions, 11512 flow [2024-06-27 18:33:05,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 645 transitions, 11159 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:05,247 INFO L231 Difference]: Finished difference. Result has 475 places, 597 transitions, 9170 flow [2024-06-27 18:33:05,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8735, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9170, PETRI_PLACES=475, PETRI_TRANSITIONS=597} [2024-06-27 18:33:05,248 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 432 predicate places. [2024-06-27 18:33:05,248 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 597 transitions, 9170 flow [2024-06-27 18:33:05,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:05,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:05,249 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 18:33:05,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:33:05,249 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:05,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash 733004793, now seen corresponding path program 7 times [2024-06-27 18:33:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071807841] [2024-06-27 18:33:05,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:05,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:06,157 INFO 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 18:33:06,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071807841] [2024-06-27 18:33:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071807841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219380112] [2024-06-27 18:33:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:06,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:06,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:06,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:06,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 597 transitions, 9170 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:06,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:06,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:06,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:07,976 INFO L124 PetriNetUnfolderBase]: 3266/5952 cut-off events. [2024-06-27 18:33:07,976 INFO L125 PetriNetUnfolderBase]: For 436049/436267 co-relation queries the response was YES. [2024-06-27 18:33:08,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44157 conditions, 5952 events. 3266/5952 cut-off events. For 436049/436267 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 44064 event pairs, 490 based on Foata normal form. 108/5954 useless extension candidates. Maximal degree in co-relation 43925. Up to 4379 conditions per place. [2024-06-27 18:33:08,084 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 502 selfloop transitions, 146 changer transitions 0/657 dead transitions. [2024-06-27 18:33:08,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 657 transitions, 11148 flow [2024-06-27 18:33:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:08,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:08,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:33:08,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47785547785547783 [2024-06-27 18:33:08,086 INFO L175 Difference]: Start difference. First operand has 475 places, 597 transitions, 9170 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:33:08,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 657 transitions, 11148 flow [2024-06-27 18:33:11,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 657 transitions, 10747 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:33:11,534 INFO L231 Difference]: Finished difference. Result has 483 places, 612 transitions, 9547 flow [2024-06-27 18:33:11,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8769, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9547, PETRI_PLACES=483, PETRI_TRANSITIONS=612} [2024-06-27 18:33:11,535 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 440 predicate places. [2024-06-27 18:33:11,535 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 612 transitions, 9547 flow [2024-06-27 18:33:11,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:11,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:11,535 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 18:33:11,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:33:11,535 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:11,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash 732995152, now seen corresponding path program 22 times [2024-06-27 18:33:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052721706] [2024-06-27 18:33:11,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:11,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:33:12,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:12,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052721706] [2024-06-27 18:33:12,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052721706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:12,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:12,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159184841] [2024-06-27 18:33:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:12,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:12,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:12,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:12,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:12,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:12,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 612 transitions, 9547 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:12,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:12,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:12,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:14,320 INFO L124 PetriNetUnfolderBase]: 3265/5931 cut-off events. [2024-06-27 18:33:14,321 INFO L125 PetriNetUnfolderBase]: For 432712/433011 co-relation queries the response was YES. [2024-06-27 18:33:14,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43964 conditions, 5931 events. 3265/5931 cut-off events. For 432712/433011 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 43554 event pairs, 476 based on Foata normal form. 107/5928 useless extension candidates. Maximal degree in co-relation 43726. Up to 2767 conditions per place. [2024-06-27 18:33:14,424 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 460 selfloop transitions, 190 changer transitions 0/659 dead transitions. [2024-06-27 18:33:14,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 659 transitions, 11683 flow [2024-06-27 18:33:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-27 18:33:14,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-27 18:33:14,426 INFO L175 Difference]: Start difference. First operand has 483 places, 612 transitions, 9547 flow. Second operand 11 states and 221 transitions. [2024-06-27 18:33:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 659 transitions, 11683 flow [2024-06-27 18:33:17,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 659 transitions, 11369 flow, removed 91 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:17,810 INFO L231 Difference]: Finished difference. Result has 491 places, 612 transitions, 9618 flow [2024-06-27 18:33:17,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9233, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9618, PETRI_PLACES=491, PETRI_TRANSITIONS=612} [2024-06-27 18:33:17,810 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 448 predicate places. [2024-06-27 18:33:17,810 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 612 transitions, 9618 flow [2024-06-27 18:33:17,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:17,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:17,811 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 18:33:17,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:33:17,811 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:17,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:17,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1999148582, now seen corresponding path program 23 times [2024-06-27 18:33:17,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:17,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543288308] [2024-06-27 18:33:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:17,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:18,601 INFO 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 18:33:18,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:18,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543288308] [2024-06-27 18:33:18,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543288308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:18,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:18,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:18,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181805597] [2024-06-27 18:33:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:18,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:18,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:18,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:18,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:18,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 612 transitions, 9618 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:18,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:18,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:18,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:20,674 INFO L124 PetriNetUnfolderBase]: 3287/5979 cut-off events. [2024-06-27 18:33:20,675 INFO L125 PetriNetUnfolderBase]: For 438848/439143 co-relation queries the response was YES. [2024-06-27 18:33:20,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44505 conditions, 5979 events. 3287/5979 cut-off events. For 438848/439143 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 43989 event pairs, 473 based on Foata normal form. 107/5978 useless extension candidates. Maximal degree in co-relation 44266. Up to 2785 conditions per place. [2024-06-27 18:33:20,770 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 461 selfloop transitions, 192 changer transitions 0/662 dead transitions. [2024-06-27 18:33:20,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 662 transitions, 12100 flow [2024-06-27 18:33:20,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-27 18:33:20,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-06-27 18:33:20,772 INFO L175 Difference]: Start difference. First operand has 491 places, 612 transitions, 9618 flow. Second operand 11 states and 222 transitions. [2024-06-27 18:33:20,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 662 transitions, 12100 flow [2024-06-27 18:33:24,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 662 transitions, 11710 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:33:24,104 INFO L231 Difference]: Finished difference. Result has 492 places, 614 transitions, 9671 flow [2024-06-27 18:33:24,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9232, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9671, PETRI_PLACES=492, PETRI_TRANSITIONS=614} [2024-06-27 18:33:24,104 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 449 predicate places. [2024-06-27 18:33:24,104 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 614 transitions, 9671 flow [2024-06-27 18:33:24,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:24,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:24,105 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 18:33:24,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:33:24,105 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:24,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1064104457, now seen corresponding path program 8 times [2024-06-27 18:33:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:24,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791976574] [2024-06-27 18:33:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:25,049 INFO 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 18:33:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791976574] [2024-06-27 18:33:25,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791976574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:25,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:25,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:25,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907587482] [2024-06-27 18:33:25,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:25,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:25,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:25,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:25,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:25,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:25,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 614 transitions, 9671 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:25,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:25,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:25,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:27,094 INFO L124 PetriNetUnfolderBase]: 3297/6004 cut-off events. [2024-06-27 18:33:27,094 INFO L125 PetriNetUnfolderBase]: For 434786/435006 co-relation queries the response was YES. [2024-06-27 18:33:27,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44836 conditions, 6004 events. 3297/6004 cut-off events. For 434786/435006 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 44345 event pairs, 509 based on Foata normal form. 107/5998 useless extension candidates. Maximal degree in co-relation 44596. Up to 4536 conditions per place. [2024-06-27 18:33:27,188 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 546 selfloop transitions, 100 changer transitions 0/655 dead transitions. [2024-06-27 18:33:27,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 655 transitions, 11245 flow [2024-06-27 18:33:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:33:27,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801864801864802 [2024-06-27 18:33:27,189 INFO L175 Difference]: Start difference. First operand has 492 places, 614 transitions, 9671 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:33:27,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 655 transitions, 11245 flow [2024-06-27 18:33:30,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 655 transitions, 10846 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:33:30,883 INFO L231 Difference]: Finished difference. Result has 495 places, 616 transitions, 9551 flow [2024-06-27 18:33:30,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9272, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9551, PETRI_PLACES=495, PETRI_TRANSITIONS=616} [2024-06-27 18:33:30,883 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 452 predicate places. [2024-06-27 18:33:30,883 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 616 transitions, 9551 flow [2024-06-27 18:33:30,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:30,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:30,884 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 18:33:30,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:33:30,884 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:30,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1064115617, now seen corresponding path program 9 times [2024-06-27 18:33:30,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:30,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263581004] [2024-06-27 18:33:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:31,856 INFO 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 18:33:31,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:31,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263581004] [2024-06-27 18:33:31,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263581004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:31,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:31,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455640951] [2024-06-27 18:33:31,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:31,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:31,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:31,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:31,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 616 transitions, 9551 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:31,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:31,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:31,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:34,062 INFO L124 PetriNetUnfolderBase]: 3330/6044 cut-off events. [2024-06-27 18:33:34,062 INFO L125 PetriNetUnfolderBase]: For 451916/452136 co-relation queries the response was YES. [2024-06-27 18:33:34,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45019 conditions, 6044 events. 3330/6044 cut-off events. For 451916/452136 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 44511 event pairs, 510 based on Foata normal form. 107/6031 useless extension candidates. Maximal degree in co-relation 44778. Up to 4539 conditions per place. [2024-06-27 18:33:34,149 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 550 selfloop transitions, 108 changer transitions 0/667 dead transitions. [2024-06-27 18:33:34,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 667 transitions, 11555 flow [2024-06-27 18:33:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:33:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:33:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-27 18:33:34,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-27 18:33:34,151 INFO L175 Difference]: Start difference. First operand has 495 places, 616 transitions, 9551 flow. Second operand 12 states and 225 transitions. [2024-06-27 18:33:34,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 667 transitions, 11555 flow [2024-06-27 18:33:37,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 667 transitions, 11298 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:37,857 INFO L231 Difference]: Finished difference. Result has 499 places, 622 transitions, 9697 flow [2024-06-27 18:33:37,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9294, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9697, PETRI_PLACES=499, PETRI_TRANSITIONS=622} [2024-06-27 18:33:37,858 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 456 predicate places. [2024-06-27 18:33:37,858 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 622 transitions, 9697 flow [2024-06-27 18:33:37,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:37,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:37,858 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 18:33:37,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:33:37,858 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:37,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash 742270786, now seen corresponding path program 2 times [2024-06-27 18:33:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:37,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497736534] [2024-06-27 18:33:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:37,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:38,803 INFO 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 18:33:38,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:38,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497736534] [2024-06-27 18:33:38,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497736534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:38,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:38,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:38,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951807273] [2024-06-27 18:33:38,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:38,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:38,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:38,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:38,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:38,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:33:38,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 622 transitions, 9697 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:38,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:38,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:33:38,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:40,941 INFO L124 PetriNetUnfolderBase]: 3209/5956 cut-off events. [2024-06-27 18:33:40,941 INFO L125 PetriNetUnfolderBase]: For 477227/477484 co-relation queries the response was YES. [2024-06-27 18:33:41,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44272 conditions, 5956 events. 3209/5956 cut-off events. For 477227/477484 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 44729 event pairs, 575 based on Foata normal form. 167/6012 useless extension candidates. Maximal degree in co-relation 44029. Up to 4417 conditions per place. [2024-06-27 18:33:41,041 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 527 selfloop transitions, 45 changer transitions 0/663 dead transitions. [2024-06-27 18:33:41,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 663 transitions, 11095 flow [2024-06-27 18:33:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:33:41,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48951048951048953 [2024-06-27 18:33:41,043 INFO L175 Difference]: Start difference. First operand has 499 places, 622 transitions, 9697 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:33:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 663 transitions, 11095 flow [2024-06-27 18:33:44,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 663 transitions, 10895 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 18:33:44,973 INFO L231 Difference]: Finished difference. Result has 502 places, 623 transitions, 9633 flow [2024-06-27 18:33:44,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9497, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9633, PETRI_PLACES=502, PETRI_TRANSITIONS=623} [2024-06-27 18:33:44,974 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 459 predicate places. [2024-06-27 18:33:44,974 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 623 transitions, 9633 flow [2024-06-27 18:33:44,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:44,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:44,974 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 18:33:44,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:33:44,975 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:44,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1180393191, now seen corresponding path program 10 times [2024-06-27 18:33:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090530418] [2024-06-27 18:33:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:45,773 INFO 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 18:33:45,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:45,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090530418] [2024-06-27 18:33:45,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090530418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:45,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:45,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:45,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981704349] [2024-06-27 18:33:45,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:45,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:45,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:45,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:45,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:45,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 623 transitions, 9633 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:45,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:45,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:45,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:48,135 INFO L124 PetriNetUnfolderBase]: 3379/6157 cut-off events. [2024-06-27 18:33:48,136 INFO L125 PetriNetUnfolderBase]: For 452981/453196 co-relation queries the response was YES. [2024-06-27 18:33:48,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45699 conditions, 6157 events. 3379/6157 cut-off events. For 452981/453196 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 45869 event pairs, 504 based on Foata normal form. 103/6143 useless extension candidates. Maximal degree in co-relation 45454. Up to 4537 conditions per place. [2024-06-27 18:33:48,230 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 517 selfloop transitions, 151 changer transitions 0/677 dead transitions. [2024-06-27 18:33:48,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 677 transitions, 11552 flow [2024-06-27 18:33:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:33:48,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825174825174825 [2024-06-27 18:33:48,231 INFO L175 Difference]: Start difference. First operand has 502 places, 623 transitions, 9633 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:33:48,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 677 transitions, 11552 flow [2024-06-27 18:33:51,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 677 transitions, 11384 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 18:33:51,757 INFO L231 Difference]: Finished difference. Result has 507 places, 633 transitions, 10059 flow [2024-06-27 18:33:51,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9465, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10059, PETRI_PLACES=507, PETRI_TRANSITIONS=633} [2024-06-27 18:33:51,757 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 464 predicate places. [2024-06-27 18:33:51,757 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 633 transitions, 10059 flow [2024-06-27 18:33:51,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:51,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:51,758 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 18:33:51,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:33:51,758 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:51,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash 799269698, now seen corresponding path program 24 times [2024-06-27 18:33:51,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:51,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399248425] [2024-06-27 18:33:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:51,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:52,541 INFO 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 18:33:52,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:52,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399248425] [2024-06-27 18:33:52,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399248425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:52,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:52,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:52,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455657763] [2024-06-27 18:33:52,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:52,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:52,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:52,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:52,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:52,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:52,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 633 transitions, 10059 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:52,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:52,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:52,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:54,474 INFO L124 PetriNetUnfolderBase]: 3395/6115 cut-off events. [2024-06-27 18:33:54,475 INFO L125 PetriNetUnfolderBase]: For 471007/471342 co-relation queries the response was YES. [2024-06-27 18:33:54,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46174 conditions, 6115 events. 3395/6115 cut-off events. For 471007/471342 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 44768 event pairs, 568 based on Foata normal form. 139/6128 useless extension candidates. Maximal degree in co-relation 45925. Up to 2933 conditions per place. [2024-06-27 18:33:54,583 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 470 selfloop transitions, 202 changer transitions 0/681 dead transitions. [2024-06-27 18:33:54,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 681 transitions, 12017 flow [2024-06-27 18:33:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:33:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:33:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-27 18:33:54,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081585081585082 [2024-06-27 18:33:54,585 INFO L175 Difference]: Start difference. First operand has 507 places, 633 transitions, 10059 flow. Second operand 11 states and 218 transitions. [2024-06-27 18:33:54,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 681 transitions, 12017 flow [2024-06-27 18:33:58,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 681 transitions, 11658 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:58,477 INFO L231 Difference]: Finished difference. Result has 513 places, 635 transitions, 10155 flow [2024-06-27 18:33:58,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9700, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10155, PETRI_PLACES=513, PETRI_TRANSITIONS=635} [2024-06-27 18:33:58,478 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 470 predicate places. [2024-06-27 18:33:58,478 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 635 transitions, 10155 flow [2024-06-27 18:33:58,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:58,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:58,478 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 18:33:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:33:58,479 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:33:58,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1998831452, now seen corresponding path program 25 times [2024-06-27 18:33:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:58,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88097193] [2024-06-27 18:33:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:58,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:59,241 INFO 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 18:33:59,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:59,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88097193] [2024-06-27 18:33:59,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88097193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:59,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:59,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:33:59,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033415111] [2024-06-27 18:33:59,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:59,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:33:59,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:59,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:33:59,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:33:59,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:33:59,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 635 transitions, 10155 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:33:59,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:59,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:33:59,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:01,293 INFO L124 PetriNetUnfolderBase]: 3397/6168 cut-off events. [2024-06-27 18:34:01,293 INFO L125 PetriNetUnfolderBase]: For 453585/453875 co-relation queries the response was YES. [2024-06-27 18:34:01,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46533 conditions, 6168 events. 3397/6168 cut-off events. For 453585/453875 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 45520 event pairs, 505 based on Foata normal form. 100/6146 useless extension candidates. Maximal degree in co-relation 46283. Up to 2936 conditions per place. [2024-06-27 18:34:01,411 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 483 selfloop transitions, 191 changer transitions 0/683 dead transitions. [2024-06-27 18:34:01,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 683 transitions, 12379 flow [2024-06-27 18:34:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-27 18:34:01,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221445221445221 [2024-06-27 18:34:01,412 INFO L175 Difference]: Start difference. First operand has 513 places, 635 transitions, 10155 flow. Second operand 11 states and 224 transitions. [2024-06-27 18:34:01,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 683 transitions, 12379 flow [2024-06-27 18:34:05,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 683 transitions, 11967 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:05,028 INFO L231 Difference]: Finished difference. Result has 516 places, 635 transitions, 10130 flow [2024-06-27 18:34:05,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9743, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10130, PETRI_PLACES=516, PETRI_TRANSITIONS=635} [2024-06-27 18:34:05,029 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 473 predicate places. [2024-06-27 18:34:05,029 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 635 transitions, 10130 flow [2024-06-27 18:34:05,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:05,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:05,030 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 18:34:05,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:34:05,030 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:05,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:05,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1172645183, now seen corresponding path program 11 times [2024-06-27 18:34:05,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:05,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647923441] [2024-06-27 18:34:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:05,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:05,856 INFO 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 18:34:05,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:05,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647923441] [2024-06-27 18:34:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647923441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:05,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:05,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:05,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705867185] [2024-06-27 18:34:05,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:05,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:05,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:05,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:34:05,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 635 transitions, 10130 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:05,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:05,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:34:05,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:07,974 INFO L124 PetriNetUnfolderBase]: 3411/6228 cut-off events. [2024-06-27 18:34:07,974 INFO L125 PetriNetUnfolderBase]: For 450326/450557 co-relation queries the response was YES. [2024-06-27 18:34:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46801 conditions, 6228 events. 3411/6228 cut-off events. For 450326/450557 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 46582 event pairs, 518 based on Foata normal form. 121/6233 useless extension candidates. Maximal degree in co-relation 46550. Up to 4581 conditions per place. [2024-06-27 18:34:08,090 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 534 selfloop transitions, 147 changer transitions 0/690 dead transitions. [2024-06-27 18:34:08,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 690 transitions, 12125 flow [2024-06-27 18:34:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:08,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:08,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:34:08,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48951048951048953 [2024-06-27 18:34:08,091 INFO L175 Difference]: Start difference. First operand has 516 places, 635 transitions, 10130 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:34:08,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 690 transitions, 12125 flow [2024-06-27 18:34:11,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 690 transitions, 11726 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:34:11,559 INFO L231 Difference]: Finished difference. Result has 521 places, 644 transitions, 10364 flow [2024-06-27 18:34:11,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9733, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10364, PETRI_PLACES=521, PETRI_TRANSITIONS=644} [2024-06-27 18:34:11,560 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 478 predicate places. [2024-06-27 18:34:11,560 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 644 transitions, 10364 flow [2024-06-27 18:34:11,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:11,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:11,560 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 18:34:11,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:34:11,560 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:11,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:11,561 INFO L85 PathProgramCache]: Analyzing trace with hash -274485112, now seen corresponding path program 3 times [2024-06-27 18:34:11,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:11,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043881285] [2024-06-27 18:34:11,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:11,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:12,476 INFO 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 18:34:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043881285] [2024-06-27 18:34:12,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043881285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:12,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:12,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976005650] [2024-06-27 18:34:12,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:12,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:12,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:12,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:34:12,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 644 transitions, 10364 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:12,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:12,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:34:12,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:14,559 INFO L124 PetriNetUnfolderBase]: 3298/6097 cut-off events. [2024-06-27 18:34:14,559 INFO L125 PetriNetUnfolderBase]: For 476050/476309 co-relation queries the response was YES. [2024-06-27 18:34:14,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45802 conditions, 6097 events. 3298/6097 cut-off events. For 476050/476309 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 45805 event pairs, 600 based on Foata normal form. 169/6142 useless extension candidates. Maximal degree in co-relation 45546. Up to 4520 conditions per place. [2024-06-27 18:34:14,673 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 540 selfloop transitions, 47 changer transitions 0/684 dead transitions. [2024-06-27 18:34:14,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 684 transitions, 11790 flow [2024-06-27 18:34:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 18:34:14,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-27 18:34:14,674 INFO L175 Difference]: Start difference. First operand has 521 places, 644 transitions, 10364 flow. Second operand 11 states and 208 transitions. [2024-06-27 18:34:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 684 transitions, 11790 flow [2024-06-27 18:34:18,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 684 transitions, 11444 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-27 18:34:18,751 INFO L231 Difference]: Finished difference. Result has 528 places, 645 transitions, 10160 flow [2024-06-27 18:34:18,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10018, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10160, PETRI_PLACES=528, PETRI_TRANSITIONS=645} [2024-06-27 18:34:18,751 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 485 predicate places. [2024-06-27 18:34:18,751 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 645 transitions, 10160 flow [2024-06-27 18:34:18,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:18,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:18,752 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 18:34:18,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:34:18,752 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:18,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash 109312868, now seen corresponding path program 4 times [2024-06-27 18:34:18,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:18,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831315706] [2024-06-27 18:34:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:18,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:19,711 INFO 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 18:34:19,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:19,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831315706] [2024-06-27 18:34:19,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831315706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:19,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:19,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:19,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315299455] [2024-06-27 18:34:19,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:19,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:19,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:19,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:19,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:19,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:34:19,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 645 transitions, 10160 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:19,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:19,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:34:19,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:21,927 INFO L124 PetriNetUnfolderBase]: 3362/6149 cut-off events. [2024-06-27 18:34:21,928 INFO L125 PetriNetUnfolderBase]: For 505643/505888 co-relation queries the response was YES. [2024-06-27 18:34:22,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46397 conditions, 6149 events. 3362/6149 cut-off events. For 505643/505888 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46111 event pairs, 680 based on Foata normal form. 166/6171 useless extension candidates. Maximal degree in co-relation 46140. Up to 4675 conditions per place. [2024-06-27 18:34:22,039 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 569 selfloop transitions, 36 changer transitions 0/702 dead transitions. [2024-06-27 18:34:22,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 702 transitions, 12229 flow [2024-06-27 18:34:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:34:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:34:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-27 18:34:22,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-27 18:34:22,040 INFO L175 Difference]: Start difference. First operand has 528 places, 645 transitions, 10160 flow. Second operand 12 states and 222 transitions. [2024-06-27 18:34:22,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 702 transitions, 12229 flow [2024-06-27 18:34:26,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 702 transitions, 12095 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:34:26,926 INFO L231 Difference]: Finished difference. Result has 536 places, 656 transitions, 10469 flow [2024-06-27 18:34:26,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10026, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10469, PETRI_PLACES=536, PETRI_TRANSITIONS=656} [2024-06-27 18:34:26,926 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 493 predicate places. [2024-06-27 18:34:26,927 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 656 transitions, 10469 flow [2024-06-27 18:34:26,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:26,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:26,927 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 18:34:26,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:34:26,927 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:26,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:26,927 INFO L85 PathProgramCache]: Analyzing trace with hash 109299445, now seen corresponding path program 12 times [2024-06-27 18:34:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125247941] [2024-06-27 18:34:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:27,800 INFO 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 18:34:27,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:27,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125247941] [2024-06-27 18:34:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125247941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:27,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:27,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:27,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586205481] [2024-06-27 18:34:27,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:27,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:34:27,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 656 transitions, 10469 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:27,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:27,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:34:27,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:29,996 INFO L124 PetriNetUnfolderBase]: 3506/6314 cut-off events. [2024-06-27 18:34:29,996 INFO L125 PetriNetUnfolderBase]: For 496446/496714 co-relation queries the response was YES. [2024-06-27 18:34:30,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48174 conditions, 6314 events. 3506/6314 cut-off events. For 496446/496714 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 46750 event pairs, 725 based on Foata normal form. 105/6270 useless extension candidates. Maximal degree in co-relation 47911. Up to 5379 conditions per place. [2024-06-27 18:34:30,110 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 673 selfloop transitions, 24 changer transitions 0/706 dead transitions. [2024-06-27 18:34:30,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 706 transitions, 12213 flow [2024-06-27 18:34:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:34:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:34:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2024-06-27 18:34:30,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457593688362919 [2024-06-27 18:34:30,112 INFO L175 Difference]: Start difference. First operand has 536 places, 656 transitions, 10469 flow. Second operand 13 states and 226 transitions. [2024-06-27 18:34:30,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 706 transitions, 12213 flow [2024-06-27 18:34:35,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 706 transitions, 11707 flow, removed 105 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:35,473 INFO L231 Difference]: Finished difference. Result has 542 places, 658 transitions, 10107 flow [2024-06-27 18:34:35,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9963, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10107, PETRI_PLACES=542, PETRI_TRANSITIONS=658} [2024-06-27 18:34:35,474 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 499 predicate places. [2024-06-27 18:34:35,474 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 658 transitions, 10107 flow [2024-06-27 18:34:35,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:35,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:35,474 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 18:34:35,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:34:35,474 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:35,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1057745572, now seen corresponding path program 26 times [2024-06-27 18:34:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:35,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810223596] [2024-06-27 18:34:35,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:35,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:36,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:36,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810223596] [2024-06-27 18:34:36,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810223596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:36,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:36,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462056143] [2024-06-27 18:34:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:36,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:36,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:36,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:34:36,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 658 transitions, 10107 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:36,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:36,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:34:36,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:38,325 INFO L124 PetriNetUnfolderBase]: 3528/6363 cut-off events. [2024-06-27 18:34:38,326 INFO L125 PetriNetUnfolderBase]: For 507211/507481 co-relation queries the response was YES. [2024-06-27 18:34:38,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47604 conditions, 6363 events. 3528/6363 cut-off events. For 507211/507481 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 47219 event pairs, 729 based on Foata normal form. 106/6321 useless extension candidates. Maximal degree in co-relation 47342. Up to 5434 conditions per place. [2024-06-27 18:34:38,435 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 670 selfloop transitions, 20 changer transitions 0/699 dead transitions. [2024-06-27 18:34:38,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 699 transitions, 11763 flow [2024-06-27 18:34:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:34:38,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44988344988344986 [2024-06-27 18:34:38,436 INFO L175 Difference]: Start difference. First operand has 542 places, 658 transitions, 10107 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:34:38,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 699 transitions, 11763 flow [2024-06-27 18:34:43,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 699 transitions, 11643 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-27 18:34:43,729 INFO L231 Difference]: Finished difference. Result has 542 places, 660 transitions, 10092 flow [2024-06-27 18:34:43,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9987, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10092, PETRI_PLACES=542, PETRI_TRANSITIONS=660} [2024-06-27 18:34:43,730 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 499 predicate places. [2024-06-27 18:34:43,730 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 660 transitions, 10092 flow [2024-06-27 18:34:43,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:43,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:43,730 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 18:34:43,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:34:43,730 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:43,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash -84244858, now seen corresponding path program 27 times [2024-06-27 18:34:43,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:43,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297233011] [2024-06-27 18:34:43,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:43,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:44,452 INFO 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 18:34:44,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:44,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297233011] [2024-06-27 18:34:44,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297233011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:44,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:44,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:44,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454816357] [2024-06-27 18:34:44,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:44,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:44,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:44,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:44,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:34:44,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 660 transitions, 10092 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:44,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:44,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:34:44,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:46,641 INFO L124 PetriNetUnfolderBase]: 3516/6333 cut-off events. [2024-06-27 18:34:46,641 INFO L125 PetriNetUnfolderBase]: For 486838/487177 co-relation queries the response was YES. [2024-06-27 18:34:46,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46688 conditions, 6333 events. 3516/6333 cut-off events. For 486838/487177 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 46876 event pairs, 598 based on Foata normal form. 125/6329 useless extension candidates. Maximal degree in co-relation 46425. Up to 3117 conditions per place. [2024-06-27 18:34:46,756 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 518 selfloop transitions, 183 changer transitions 0/710 dead transitions. [2024-06-27 18:34:46,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 710 transitions, 12712 flow [2024-06-27 18:34:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-06-27 18:34:46,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291375291375291 [2024-06-27 18:34:46,759 INFO L175 Difference]: Start difference. First operand has 542 places, 660 transitions, 10092 flow. Second operand 11 states and 227 transitions. [2024-06-27 18:34:46,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 710 transitions, 12712 flow [2024-06-27 18:34:51,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 710 transitions, 12603 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 18:34:51,436 INFO L231 Difference]: Finished difference. Result has 544 places, 660 transitions, 10354 flow [2024-06-27 18:34:51,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9983, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10354, PETRI_PLACES=544, PETRI_TRANSITIONS=660} [2024-06-27 18:34:51,436 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 501 predicate places. [2024-06-27 18:34:51,436 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 660 transitions, 10354 flow [2024-06-27 18:34:51,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:51,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:51,437 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 18:34:51,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:34:51,437 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:51,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:51,437 INFO L85 PathProgramCache]: Analyzing trace with hash -274497016, now seen corresponding path program 28 times [2024-06-27 18:34:51,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:51,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876390157] [2024-06-27 18:34:51,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:51,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:52,215 INFO 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 18:34:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:52,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876390157] [2024-06-27 18:34:52,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876390157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:52,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:52,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245500655] [2024-06-27 18:34:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:52,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:34:52,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 660 transitions, 10354 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:52,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:52,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:34:52,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:54,404 INFO L124 PetriNetUnfolderBase]: 3542/6456 cut-off events. [2024-06-27 18:34:54,404 INFO L125 PetriNetUnfolderBase]: For 494460/494739 co-relation queries the response was YES. [2024-06-27 18:34:54,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48058 conditions, 6456 events. 3542/6456 cut-off events. For 494460/494739 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 48340 event pairs, 449 based on Foata normal form. 99/6430 useless extension candidates. Maximal degree in co-relation 47794. Up to 3148 conditions per place. [2024-06-27 18:34:54,519 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 489 selfloop transitions, 211 changer transitions 0/709 dead transitions. [2024-06-27 18:34:54,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 709 transitions, 12710 flow [2024-06-27 18:34:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:34:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:34:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 18:34:54,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 18:34:54,520 INFO L175 Difference]: Start difference. First operand has 544 places, 660 transitions, 10354 flow. Second operand 11 states and 220 transitions. [2024-06-27 18:34:54,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 709 transitions, 12710 flow [2024-06-27 18:34:58,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 709 transitions, 12327 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:34:58,914 INFO L231 Difference]: Finished difference. Result has 545 places, 662 transitions, 10462 flow [2024-06-27 18:34:58,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9977, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10462, PETRI_PLACES=545, PETRI_TRANSITIONS=662} [2024-06-27 18:34:58,915 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 502 predicate places. [2024-06-27 18:34:58,915 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 662 transitions, 10462 flow [2024-06-27 18:34:58,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:58,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:58,915 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 18:34:58,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:34:58,915 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:58,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1181572842, now seen corresponding path program 29 times [2024-06-27 18:34:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:58,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497766759] [2024-06-27 18:34:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:58,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:59,694 INFO 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 18:34:59,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:59,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497766759] [2024-06-27 18:34:59,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497766759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:59,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:59,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:34:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790894700] [2024-06-27 18:34:59,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:59,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:34:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:34:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:34:59,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:34:59,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 662 transitions, 10462 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:59,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:59,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:34:59,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:01,782 INFO L124 PetriNetUnfolderBase]: 3546/6388 cut-off events. [2024-06-27 18:35:01,782 INFO L125 PetriNetUnfolderBase]: For 501464/501797 co-relation queries the response was YES. [2024-06-27 18:35:01,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48208 conditions, 6388 events. 3546/6388 cut-off events. For 501464/501797 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47459 event pairs, 582 based on Foata normal form. 115/6369 useless extension candidates. Maximal degree in co-relation 47943. Up to 3132 conditions per place. [2024-06-27 18:35:01,891 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 514 selfloop transitions, 190 changer transitions 0/713 dead transitions. [2024-06-27 18:35:01,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 713 transitions, 13146 flow [2024-06-27 18:35:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-27 18:35:01,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221445221445221 [2024-06-27 18:35:01,893 INFO L175 Difference]: Start difference. First operand has 545 places, 662 transitions, 10462 flow. Second operand 11 states and 224 transitions. [2024-06-27 18:35:01,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 713 transitions, 13146 flow [2024-06-27 18:35:06,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 713 transitions, 12777 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:06,297 INFO L231 Difference]: Finished difference. Result has 548 places, 664 transitions, 10536 flow [2024-06-27 18:35:06,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10097, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10536, PETRI_PLACES=548, PETRI_TRANSITIONS=664} [2024-06-27 18:35:06,298 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 505 predicate places. [2024-06-27 18:35:06,298 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 664 transitions, 10536 flow [2024-06-27 18:35:06,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:06,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:06,298 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 18:35:06,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:35:06,298 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:06,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:06,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1181582142, now seen corresponding path program 30 times [2024-06-27 18:35:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:06,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313606773] [2024-06-27 18:35:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:06,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:35:06,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:06,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313606773] [2024-06-27 18:35:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313606773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:06,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:06,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69145009] [2024-06-27 18:35:06,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:06,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:07,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:35:07,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 664 transitions, 10536 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:07,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:07,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:35:07,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:09,183 INFO L124 PetriNetUnfolderBase]: 3568/6443 cut-off events. [2024-06-27 18:35:09,184 INFO L125 PetriNetUnfolderBase]: For 508966/509300 co-relation queries the response was YES. [2024-06-27 18:35:09,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48416 conditions, 6443 events. 3568/6443 cut-off events. For 508966/509300 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 48045 event pairs, 587 based on Foata normal form. 116/6427 useless extension candidates. Maximal degree in co-relation 48150. Up to 3150 conditions per place. [2024-06-27 18:35:09,297 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 516 selfloop transitions, 191 changer transitions 0/716 dead transitions. [2024-06-27 18:35:09,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 716 transitions, 13244 flow [2024-06-27 18:35:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-06-27 18:35:09,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268065268065268 [2024-06-27 18:35:09,298 INFO L175 Difference]: Start difference. First operand has 548 places, 664 transitions, 10536 flow. Second operand 11 states and 226 transitions. [2024-06-27 18:35:09,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 716 transitions, 13244 flow [2024-06-27 18:35:13,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 716 transitions, 12669 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-06-27 18:35:13,747 INFO L231 Difference]: Finished difference. Result has 547 places, 666 transitions, 10406 flow [2024-06-27 18:35:13,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9971, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10406, PETRI_PLACES=547, PETRI_TRANSITIONS=666} [2024-06-27 18:35:13,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 504 predicate places. [2024-06-27 18:35:13,748 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 666 transitions, 10406 flow [2024-06-27 18:35:13,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:13,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:13,748 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 18:35:13,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:35:13,748 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:13,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:13,749 INFO L85 PathProgramCache]: Analyzing trace with hash 96412838, now seen corresponding path program 5 times [2024-06-27 18:35:13,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:13,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062132439] [2024-06-27 18:35:13,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:13,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:14,707 INFO 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 18:35:14,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:14,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062132439] [2024-06-27 18:35:14,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062132439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:14,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:14,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265055472] [2024-06-27 18:35:14,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:14,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:14,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:14,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:35:14,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 666 transitions, 10406 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:14,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:14,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:35:14,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:16,931 INFO L124 PetriNetUnfolderBase]: 3464/6376 cut-off events. [2024-06-27 18:35:16,932 INFO L125 PetriNetUnfolderBase]: For 517483/517722 co-relation queries the response was YES. [2024-06-27 18:35:17,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47394 conditions, 6376 events. 3464/6376 cut-off events. For 517483/517722 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 48423 event pairs, 717 based on Foata normal form. 162/6387 useless extension candidates. Maximal degree in co-relation 47127. Up to 4936 conditions per place. [2024-06-27 18:35:17,044 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 591 selfloop transitions, 19 changer transitions 0/708 dead transitions. [2024-06-27 18:35:17,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 708 transitions, 11888 flow [2024-06-27 18:35:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:35:17,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:35:17,045 INFO L175 Difference]: Start difference. First operand has 547 places, 666 transitions, 10406 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:35:17,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 708 transitions, 11888 flow [2024-06-27 18:35:22,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 708 transitions, 11481 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:22,404 INFO L231 Difference]: Finished difference. Result has 551 places, 669 transitions, 10102 flow [2024-06-27 18:35:22,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9999, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10102, PETRI_PLACES=551, PETRI_TRANSITIONS=669} [2024-06-27 18:35:22,405 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 508 predicate places. [2024-06-27 18:35:22,405 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 669 transitions, 10102 flow [2024-06-27 18:35:22,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:22,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:22,405 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 18:35:22,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:35:22,405 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:22,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash 109299848, now seen corresponding path program 6 times [2024-06-27 18:35:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:22,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893775327] [2024-06-27 18:35:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:22,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:23,358 INFO 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 18:35:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:23,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893775327] [2024-06-27 18:35:23,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893775327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:23,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:23,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:23,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794777996] [2024-06-27 18:35:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:23,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:23,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:23,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:23,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:35:23,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 669 transitions, 10102 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:23,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:23,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:35:23,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:25,584 INFO L124 PetriNetUnfolderBase]: 3468/6402 cut-off events. [2024-06-27 18:35:25,585 INFO L125 PetriNetUnfolderBase]: For 494885/495126 co-relation queries the response was YES. [2024-06-27 18:35:25,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46038 conditions, 6402 events. 3468/6402 cut-off events. For 494885/495126 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 48833 event pairs, 706 based on Foata normal form. 162/6415 useless extension candidates. Maximal degree in co-relation 45769. Up to 4900 conditions per place. [2024-06-27 18:35:25,695 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 579 selfloop transitions, 39 changer transitions 0/716 dead transitions. [2024-06-27 18:35:25,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 716 transitions, 11630 flow [2024-06-27 18:35:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:35:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:35:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-27 18:35:25,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:35:25,696 INFO L175 Difference]: Start difference. First operand has 551 places, 669 transitions, 10102 flow. Second operand 12 states and 221 transitions. [2024-06-27 18:35:25,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 716 transitions, 11630 flow [2024-06-27 18:35:30,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 716 transitions, 11497 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:30,493 INFO L231 Difference]: Finished difference. Result has 555 places, 672 transitions, 10108 flow [2024-06-27 18:35:30,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9999, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10108, PETRI_PLACES=555, PETRI_TRANSITIONS=672} [2024-06-27 18:35:30,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 512 predicate places. [2024-06-27 18:35:30,494 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 672 transitions, 10108 flow [2024-06-27 18:35:30,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:30,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:30,494 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 18:35:30,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:35:30,494 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:30,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:30,495 INFO L85 PathProgramCache]: Analyzing trace with hash -274485515, now seen corresponding path program 13 times [2024-06-27 18:35:30,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:30,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432356920] [2024-06-27 18:35:30,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:30,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:31,401 INFO 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 18:35:31,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:31,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432356920] [2024-06-27 18:35:31,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432356920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:31,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:31,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:31,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460712162] [2024-06-27 18:35:31,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:31,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:31,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:31,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:31,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:35:31,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 672 transitions, 10108 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:31,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:31,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:35:31,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:33,587 INFO L124 PetriNetUnfolderBase]: 3624/6576 cut-off events. [2024-06-27 18:35:33,587 INFO L125 PetriNetUnfolderBase]: For 493214/493432 co-relation queries the response was YES. [2024-06-27 18:35:33,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47748 conditions, 6576 events. 3624/6576 cut-off events. For 493214/493432 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 49458 event pairs, 556 based on Foata normal form. 104/6542 useless extension candidates. Maximal degree in co-relation 47478. Up to 5021 conditions per place. [2024-06-27 18:35:33,703 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 601 selfloop transitions, 110 changer transitions 0/720 dead transitions. [2024-06-27 18:35:33,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 720 transitions, 12264 flow [2024-06-27 18:35:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:35:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:35:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 18:35:33,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47649572649572647 [2024-06-27 18:35:33,705 INFO L175 Difference]: Start difference. First operand has 555 places, 672 transitions, 10108 flow. Second operand 12 states and 223 transitions. [2024-06-27 18:35:33,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 720 transitions, 12264 flow [2024-06-27 18:35:38,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 720 transitions, 12094 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-27 18:35:38,769 INFO L231 Difference]: Finished difference. Result has 555 places, 676 transitions, 10348 flow [2024-06-27 18:35:38,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9938, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10348, PETRI_PLACES=555, PETRI_TRANSITIONS=676} [2024-06-27 18:35:38,770 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 512 predicate places. [2024-06-27 18:35:38,770 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 676 transitions, 10348 flow [2024-06-27 18:35:38,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:38,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:38,770 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 18:35:38,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:35:38,770 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:38,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -274814146, now seen corresponding path program 31 times [2024-06-27 18:35:38,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:38,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362782641] [2024-06-27 18:35:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:38,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:39,541 INFO 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 18:35:39,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:39,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362782641] [2024-06-27 18:35:39,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362782641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:39,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:39,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:39,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386873694] [2024-06-27 18:35:39,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:39,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:39,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:39,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:39,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:39,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:35:39,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 676 transitions, 10348 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:39,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:39,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:35:39,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:41,803 INFO L124 PetriNetUnfolderBase]: 3649/6670 cut-off events. [2024-06-27 18:35:41,803 INFO L125 PetriNetUnfolderBase]: For 515303/515582 co-relation queries the response was YES. [2024-06-27 18:35:41,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48385 conditions, 6670 events. 3649/6670 cut-off events. For 515303/515582 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 50637 event pairs, 456 based on Foata normal form. 99/6639 useless extension candidates. Maximal degree in co-relation 48117. Up to 3262 conditions per place. [2024-06-27 18:35:41,920 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 498 selfloop transitions, 218 changer transitions 0/725 dead transitions. [2024-06-27 18:35:41,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 725 transitions, 12750 flow [2024-06-27 18:35:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-27 18:35:41,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104895104895105 [2024-06-27 18:35:41,922 INFO L175 Difference]: Start difference. First operand has 555 places, 676 transitions, 10348 flow. Second operand 11 states and 219 transitions. [2024-06-27 18:35:41,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 725 transitions, 12750 flow [2024-06-27 18:35:46,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 725 transitions, 12514 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:46,822 INFO L231 Difference]: Finished difference. Result has 558 places, 678 transitions, 10607 flow [2024-06-27 18:35:46,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10112, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10607, PETRI_PLACES=558, PETRI_TRANSITIONS=678} [2024-06-27 18:35:46,823 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 515 predicate places. [2024-06-27 18:35:46,823 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 678 transitions, 10607 flow [2024-06-27 18:35:46,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:46,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:46,823 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 18:35:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 18:35:46,824 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:46,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash -274813805, now seen corresponding path program 14 times [2024-06-27 18:35:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132733577] [2024-06-27 18:35:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:47,663 INFO 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 18:35:47,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132733577] [2024-06-27 18:35:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132733577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:47,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:47,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:47,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261263586] [2024-06-27 18:35:47,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:47,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:47,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:47,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:47,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:47,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:35:47,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 678 transitions, 10607 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:47,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:47,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:35:47,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:49,836 INFO L124 PetriNetUnfolderBase]: 3654/6681 cut-off events. [2024-06-27 18:35:49,836 INFO L125 PetriNetUnfolderBase]: For 495296/495508 co-relation queries the response was YES. [2024-06-27 18:35:49,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49329 conditions, 6681 events. 3654/6681 cut-off events. For 495296/495508 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 50721 event pairs, 563 based on Foata normal form. 104/6649 useless extension candidates. Maximal degree in co-relation 49059. Up to 4963 conditions per place. [2024-06-27 18:35:49,958 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 542 selfloop transitions, 175 changer transitions 0/726 dead transitions. [2024-06-27 18:35:49,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 726 transitions, 12569 flow [2024-06-27 18:35:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:49,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:35:49,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 18:35:49,960 INFO L175 Difference]: Start difference. First operand has 558 places, 678 transitions, 10607 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:35:49,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 726 transitions, 12569 flow [2024-06-27 18:35:54,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 726 transitions, 12006 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-27 18:35:54,660 INFO L231 Difference]: Finished difference. Result has 561 places, 684 transitions, 10627 flow [2024-06-27 18:35:54,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10044, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10627, PETRI_PLACES=561, PETRI_TRANSITIONS=684} [2024-06-27 18:35:54,660 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 518 predicate places. [2024-06-27 18:35:54,660 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 684 transitions, 10627 flow [2024-06-27 18:35:54,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:54,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:54,661 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 18:35:54,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 18:35:54,661 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:35:54,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash -274823446, now seen corresponding path program 32 times [2024-06-27 18:35:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:54,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491461710] [2024-06-27 18:35:54,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:54,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:55,453 INFO 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 18:35:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491461710] [2024-06-27 18:35:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491461710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:55,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851879308] [2024-06-27 18:35:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:55,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:55,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:55,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:55,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:55,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:35:55,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 684 transitions, 10627 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:35:55,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:55,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:35:55,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:57,696 INFO L124 PetriNetUnfolderBase]: 3653/6675 cut-off events. [2024-06-27 18:35:57,696 INFO L125 PetriNetUnfolderBase]: For 483182/483457 co-relation queries the response was YES. [2024-06-27 18:35:57,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48167 conditions, 6675 events. 3653/6675 cut-off events. For 483182/483457 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 50685 event pairs, 459 based on Foata normal form. 97/6637 useless extension candidates. Maximal degree in co-relation 47894. Up to 3270 conditions per place. [2024-06-27 18:35:57,819 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 500 selfloop transitions, 220 changer transitions 0/729 dead transitions. [2024-06-27 18:35:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 729 transitions, 12655 flow [2024-06-27 18:35:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 18:35:57,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034965034965035 [2024-06-27 18:35:57,820 INFO L175 Difference]: Start difference. First operand has 561 places, 684 transitions, 10627 flow. Second operand 11 states and 216 transitions. [2024-06-27 18:35:57,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 729 transitions, 12655 flow [2024-06-27 18:36:02,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 729 transitions, 12310 flow, removed 83 selfloop flow, removed 4 redundant places. [2024-06-27 18:36:02,910 INFO L231 Difference]: Finished difference. Result has 568 places, 684 transitions, 10727 flow [2024-06-27 18:36:02,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10282, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10727, PETRI_PLACES=568, PETRI_TRANSITIONS=684} [2024-06-27 18:36:02,911 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 525 predicate places. [2024-06-27 18:36:02,911 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 684 transitions, 10727 flow [2024-06-27 18:36:02,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:02,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:02,911 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 18:36:02,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 18:36:02,912 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:02,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1059484427, now seen corresponding path program 15 times [2024-06-27 18:36:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:02,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776179712] [2024-06-27 18:36:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:03,840 INFO 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 18:36:03,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776179712] [2024-06-27 18:36:03,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776179712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:03,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:03,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:03,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671952820] [2024-06-27 18:36:03,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:03,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:03,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:03,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:36:03,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 684 transitions, 10727 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:03,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:03,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:36:03,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:06,096 INFO L124 PetriNetUnfolderBase]: 3663/6673 cut-off events. [2024-06-27 18:36:06,096 INFO L125 PetriNetUnfolderBase]: For 479572/479806 co-relation queries the response was YES. [2024-06-27 18:36:06,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49034 conditions, 6673 events. 3663/6673 cut-off events. For 479572/479806 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 50486 event pairs, 592 based on Foata normal form. 113/6650 useless extension candidates. Maximal degree in co-relation 48760. Up to 5108 conditions per place. [2024-06-27 18:36:06,227 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 619 selfloop transitions, 97 changer transitions 0/725 dead transitions. [2024-06-27 18:36:06,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 725 transitions, 12469 flow [2024-06-27 18:36:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 18:36:06,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-27 18:36:06,229 INFO L175 Difference]: Start difference. First operand has 568 places, 684 transitions, 10727 flow. Second operand 11 states and 208 transitions. [2024-06-27 18:36:06,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 725 transitions, 12469 flow [2024-06-27 18:36:10,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 725 transitions, 11993 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:36:10,837 INFO L231 Difference]: Finished difference. Result has 568 places, 686 transitions, 10552 flow [2024-06-27 18:36:10,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10251, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10552, PETRI_PLACES=568, PETRI_TRANSITIONS=686} [2024-06-27 18:36:10,838 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 525 predicate places. [2024-06-27 18:36:10,838 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 686 transitions, 10552 flow [2024-06-27 18:36:10,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:10,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:10,838 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 18:36:10,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 18:36:10,838 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:10,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:10,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1181910773, now seen corresponding path program 16 times [2024-06-27 18:36:10,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:10,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775231902] [2024-06-27 18:36:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:10,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:11,757 INFO 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 18:36:11,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:11,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775231902] [2024-06-27 18:36:11,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775231902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:11,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:11,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:11,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216373190] [2024-06-27 18:36:11,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:11,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:11,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:11,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:36:11,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 686 transitions, 10552 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:11,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:11,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:36:11,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:13,969 INFO L124 PetriNetUnfolderBase]: 3684/6690 cut-off events. [2024-06-27 18:36:13,970 INFO L125 PetriNetUnfolderBase]: For 471565/471799 co-relation queries the response was YES. [2024-06-27 18:36:14,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48291 conditions, 6690 events. 3684/6690 cut-off events. For 471565/471799 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 50395 event pairs, 585 based on Foata normal form. 123/6671 useless extension candidates. Maximal degree in co-relation 48016. Up to 5096 conditions per place. [2024-06-27 18:36:14,093 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 620 selfloop transitions, 107 changer transitions 0/736 dead transitions. [2024-06-27 18:36:14,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 736 transitions, 12378 flow [2024-06-27 18:36:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:36:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:36:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-27 18:36:14,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-27 18:36:14,094 INFO L175 Difference]: Start difference. First operand has 568 places, 686 transitions, 10552 flow. Second operand 12 states and 225 transitions. [2024-06-27 18:36:14,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 736 transitions, 12378 flow [2024-06-27 18:36:18,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 736 transitions, 12099 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:18,741 INFO L231 Difference]: Finished difference. Result has 572 places, 692 transitions, 10649 flow [2024-06-27 18:36:18,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10273, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10649, PETRI_PLACES=572, PETRI_TRANSITIONS=692} [2024-06-27 18:36:18,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 529 predicate places. [2024-06-27 18:36:18,742 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 692 transitions, 10649 flow [2024-06-27 18:36:18,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:18,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:18,743 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 18:36:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 18:36:18,743 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:18,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:18,743 INFO L85 PathProgramCache]: Analyzing trace with hash -74990428, now seen corresponding path program 33 times [2024-06-27 18:36:18,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:18,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256547075] [2024-06-27 18:36:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:19,412 INFO 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 18:36:19,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:19,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256547075] [2024-06-27 18:36:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256547075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:19,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:19,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:19,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673458910] [2024-06-27 18:36:19,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:19,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:19,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:19,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:36:19,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 692 transitions, 10649 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:19,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:19,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:36:19,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:21,610 INFO L124 PetriNetUnfolderBase]: 3675/6647 cut-off events. [2024-06-27 18:36:21,611 INFO L125 PetriNetUnfolderBase]: For 462235/462548 co-relation queries the response was YES. [2024-06-27 18:36:21,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47682 conditions, 6647 events. 3675/6647 cut-off events. For 462235/462548 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 49892 event pairs, 580 based on Foata normal form. 120/6628 useless extension candidates. Maximal degree in co-relation 47405. Up to 3304 conditions per place. [2024-06-27 18:36:21,732 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 530 selfloop transitions, 200 changer transitions 0/739 dead transitions. [2024-06-27 18:36:21,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 739 transitions, 12727 flow [2024-06-27 18:36:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-27 18:36:21,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-27 18:36:21,733 INFO L175 Difference]: Start difference. First operand has 572 places, 692 transitions, 10649 flow. Second operand 11 states and 221 transitions. [2024-06-27 18:36:21,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 739 transitions, 12727 flow [2024-06-27 18:36:26,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 739 transitions, 12403 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:26,184 INFO L231 Difference]: Finished difference. Result has 574 places, 692 transitions, 10730 flow [2024-06-27 18:36:26,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10325, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10730, PETRI_PLACES=574, PETRI_TRANSITIONS=692} [2024-06-27 18:36:26,185 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 531 predicate places. [2024-06-27 18:36:26,185 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 692 transitions, 10730 flow [2024-06-27 18:36:26,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:26,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:26,185 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 18:36:26,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 18:36:26,186 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:26,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1181911176, now seen corresponding path program 7 times [2024-06-27 18:36:26,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:26,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179006823] [2024-06-27 18:36:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:26,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:27,086 INFO 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 18:36:27,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:27,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179006823] [2024-06-27 18:36:27,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179006823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:27,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:27,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:27,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698255642] [2024-06-27 18:36:27,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:27,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:27,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:27,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:36:27,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 692 transitions, 10730 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:27,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:27,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:36:27,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:29,240 INFO L124 PetriNetUnfolderBase]: 3526/6547 cut-off events. [2024-06-27 18:36:29,240 INFO L125 PetriNetUnfolderBase]: For 444149/444405 co-relation queries the response was YES. [2024-06-27 18:36:29,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46616 conditions, 6547 events. 3526/6547 cut-off events. For 444149/444405 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 50241 event pairs, 647 based on Foata normal form. 168/6577 useless extension candidates. Maximal degree in co-relation 46338. Up to 4844 conditions per place. [2024-06-27 18:36:29,371 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 583 selfloop transitions, 44 changer transitions 0/733 dead transitions. [2024-06-27 18:36:29,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 733 transitions, 12244 flow [2024-06-27 18:36:29,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:29,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 18:36:29,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184149184149184 [2024-06-27 18:36:29,373 INFO L175 Difference]: Start difference. First operand has 574 places, 692 transitions, 10730 flow. Second operand 11 states and 211 transitions. [2024-06-27 18:36:29,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 733 transitions, 12244 flow [2024-06-27 18:36:34,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 733 transitions, 11828 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 18:36:34,065 INFO L231 Difference]: Finished difference. Result has 574 places, 693 transitions, 10454 flow [2024-06-27 18:36:34,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10314, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10454, PETRI_PLACES=574, PETRI_TRANSITIONS=693} [2024-06-27 18:36:34,066 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 531 predicate places. [2024-06-27 18:36:34,066 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 693 transitions, 10454 flow [2024-06-27 18:36:34,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:34,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:34,066 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 18:36:34,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 18:36:34,066 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:34,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash -333864298, now seen corresponding path program 34 times [2024-06-27 18:36:34,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:34,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481291001] [2024-06-27 18:36:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:34,829 INFO 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 18:36:34,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:34,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481291001] [2024-06-27 18:36:34,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481291001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:34,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:34,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216743586] [2024-06-27 18:36:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:34,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:34,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:34,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:34,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:34,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:36:34,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 693 transitions, 10454 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:34,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:34,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:36:34,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:37,003 INFO L124 PetriNetUnfolderBase]: 3698/6638 cut-off events. [2024-06-27 18:36:37,003 INFO L125 PetriNetUnfolderBase]: For 439012/439344 co-relation queries the response was YES. [2024-06-27 18:36:37,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46889 conditions, 6638 events. 3698/6638 cut-off events. For 439012/439344 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 49439 event pairs, 614 based on Foata normal form. 121/6613 useless extension candidates. Maximal degree in co-relation 46610. Up to 3325 conditions per place. [2024-06-27 18:36:37,128 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 535 selfloop transitions, 198 changer transitions 0/742 dead transitions. [2024-06-27 18:36:37,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 742 transitions, 12588 flow [2024-06-27 18:36:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-27 18:36:37,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174825174825175 [2024-06-27 18:36:37,129 INFO L175 Difference]: Start difference. First operand has 574 places, 693 transitions, 10454 flow. Second operand 11 states and 222 transitions. [2024-06-27 18:36:37,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 742 transitions, 12588 flow [2024-06-27 18:36:41,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 742 transitions, 12458 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:41,096 INFO L231 Difference]: Finished difference. Result has 576 places, 695 transitions, 10771 flow [2024-06-27 18:36:41,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10324, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10771, PETRI_PLACES=576, PETRI_TRANSITIONS=695} [2024-06-27 18:36:41,097 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 533 predicate places. [2024-06-27 18:36:41,097 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 695 transitions, 10771 flow [2024-06-27 18:36:41,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:41,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:41,097 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 18:36:41,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 18:36:41,097 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:41,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:41,098 INFO L85 PathProgramCache]: Analyzing trace with hash 923284872, now seen corresponding path program 35 times [2024-06-27 18:36:41,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:41,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536810228] [2024-06-27 18:36:41,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:41,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:41,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:41,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536810228] [2024-06-27 18:36:41,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536810228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:41,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:41,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:41,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632494707] [2024-06-27 18:36:41,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:41,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:41,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:41,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:36:41,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 695 transitions, 10771 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:41,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:41,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:36:41,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:44,052 INFO L124 PetriNetUnfolderBase]: 3694/6631 cut-off events. [2024-06-27 18:36:44,052 INFO L125 PetriNetUnfolderBase]: For 415610/415949 co-relation queries the response was YES. [2024-06-27 18:36:44,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47307 conditions, 6631 events. 3694/6631 cut-off events. For 415610/415949 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 49490 event pairs, 596 based on Foata normal form. 127/6612 useless extension candidates. Maximal degree in co-relation 47027. Up to 3322 conditions per place. [2024-06-27 18:36:44,176 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 533 selfloop transitions, 199 changer transitions 0/741 dead transitions. [2024-06-27 18:36:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 741 transitions, 12523 flow [2024-06-27 18:36:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:44,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 18:36:44,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-27 18:36:44,177 INFO L175 Difference]: Start difference. First operand has 576 places, 695 transitions, 10771 flow. Second operand 11 states and 220 transitions. [2024-06-27 18:36:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 741 transitions, 12523 flow [2024-06-27 18:36:48,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 741 transitions, 11999 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:48,586 INFO L231 Difference]: Finished difference. Result has 578 places, 695 transitions, 10650 flow [2024-06-27 18:36:48,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10247, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10650, PETRI_PLACES=578, PETRI_TRANSITIONS=695} [2024-06-27 18:36:48,587 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 535 predicate places. [2024-06-27 18:36:48,587 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 695 transitions, 10650 flow [2024-06-27 18:36:48,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:48,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:48,587 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 18:36:48,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 18:36:48,587 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:48,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash 816661855, now seen corresponding path program 7 times [2024-06-27 18:36:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:48,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077994519] [2024-06-27 18:36:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:48,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:36:49,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:49,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077994519] [2024-06-27 18:36:49,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077994519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:49,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:49,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:49,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295452737] [2024-06-27 18:36:49,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:49,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:49,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:49,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:49,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:49,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:36:49,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 695 transitions, 10650 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:49,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:49,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:36:49,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:51,608 INFO L124 PetriNetUnfolderBase]: 3508/6442 cut-off events. [2024-06-27 18:36:51,608 INFO L125 PetriNetUnfolderBase]: For 422142/422455 co-relation queries the response was YES. [2024-06-27 18:36:51,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46061 conditions, 6442 events. 3508/6442 cut-off events. For 422142/422455 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 49379 event pairs, 744 based on Foata normal form. 137/6385 useless extension candidates. Maximal degree in co-relation 45780. Up to 5140 conditions per place. [2024-06-27 18:36:51,729 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 589 selfloop transitions, 93 changer transitions 0/737 dead transitions. [2024-06-27 18:36:51,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 737 transitions, 12231 flow [2024-06-27 18:36:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:51,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:36:51,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48951048951048953 [2024-06-27 18:36:51,730 INFO L175 Difference]: Start difference. First operand has 578 places, 695 transitions, 10650 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:36:51,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 737 transitions, 12231 flow [2024-06-27 18:36:56,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 737 transitions, 11814 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:36:56,667 INFO L231 Difference]: Finished difference. Result has 578 places, 697 transitions, 10478 flow [2024-06-27 18:36:56,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10233, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10478, PETRI_PLACES=578, PETRI_TRANSITIONS=697} [2024-06-27 18:36:56,667 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 535 predicate places. [2024-06-27 18:36:56,667 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 697 transitions, 10478 flow [2024-06-27 18:36:56,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:56,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:56,668 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 18:36:56,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 18:36:56,668 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:36:56,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1146606645, now seen corresponding path program 8 times [2024-06-27 18:36:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:56,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101071073] [2024-06-27 18:36:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:56,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:57,607 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 18:36:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101071073] [2024-06-27 18:36:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101071073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:57,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:57,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:36:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362599438] [2024-06-27 18:36:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:36:57,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:36:57,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:36:57,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:36:57,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 697 transitions, 10478 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:36:57,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:57,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:36:57,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:59,849 INFO L124 PetriNetUnfolderBase]: 3558/6550 cut-off events. [2024-06-27 18:36:59,850 INFO L125 PetriNetUnfolderBase]: For 428791/429104 co-relation queries the response was YES. [2024-06-27 18:36:59,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45919 conditions, 6550 events. 3558/6550 cut-off events. For 428791/429104 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 50526 event pairs, 732 based on Foata normal form. 137/6489 useless extension candidates. Maximal degree in co-relation 45637. Up to 5079 conditions per place. [2024-06-27 18:36:59,982 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 548 selfloop transitions, 153 changer transitions 0/756 dead transitions. [2024-06-27 18:36:59,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 756 transitions, 12325 flow [2024-06-27 18:36:59,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:59,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:59,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:36:59,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011655011655012 [2024-06-27 18:36:59,984 INFO L175 Difference]: Start difference. First operand has 578 places, 697 transitions, 10478 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:36:59,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 756 transitions, 12325 flow [2024-06-27 18:37:04,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 756 transitions, 12087 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 18:37:04,554 INFO L231 Difference]: Finished difference. Result has 582 places, 712 transitions, 10858 flow [2024-06-27 18:37:04,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10279, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10858, PETRI_PLACES=582, PETRI_TRANSITIONS=712} [2024-06-27 18:37:04,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 539 predicate places. [2024-06-27 18:37:04,555 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 712 transitions, 10858 flow [2024-06-27 18:37:04,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:04,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:04,555 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 18:37:04,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 18:37:04,555 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:04,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:04,556 INFO L85 PathProgramCache]: Analyzing trace with hash -984613259, now seen corresponding path program 9 times [2024-06-27 18:37:04,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:04,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222388542] [2024-06-27 18:37:04,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:04,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:05,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222388542] [2024-06-27 18:37:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222388542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:05,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:05,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:37:05,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490992125] [2024-06-27 18:37:05,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:05,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:37:05,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:37:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:37:05,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:37:05,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 712 transitions, 10858 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:05,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:05,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:37:05,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:07,739 INFO L124 PetriNetUnfolderBase]: 3600/6623 cut-off events. [2024-06-27 18:37:07,740 INFO L125 PetriNetUnfolderBase]: For 435316/435629 co-relation queries the response was YES. [2024-06-27 18:37:07,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46531 conditions, 6623 events. 3600/6623 cut-off events. For 435316/435629 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 51180 event pairs, 769 based on Foata normal form. 137/6562 useless extension candidates. Maximal degree in co-relation 46247. Up to 5233 conditions per place. [2024-06-27 18:37:07,871 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 581 selfloop transitions, 123 changer transitions 0/759 dead transitions. [2024-06-27 18:37:07,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 759 transitions, 12610 flow [2024-06-27 18:37:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:37:07,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49417249417249415 [2024-06-27 18:37:07,872 INFO L175 Difference]: Start difference. First operand has 582 places, 712 transitions, 10858 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:37:07,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 759 transitions, 12610 flow [2024-06-27 18:37:12,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 759 transitions, 12268 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 18:37:12,905 INFO L231 Difference]: Finished difference. Result has 586 places, 721 transitions, 10964 flow [2024-06-27 18:37:12,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10555, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10964, PETRI_PLACES=586, PETRI_TRANSITIONS=721} [2024-06-27 18:37:12,906 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 543 predicate places. [2024-06-27 18:37:12,906 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 721 transitions, 10964 flow [2024-06-27 18:37:12,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:12,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:12,907 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 18:37:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 18:37:12,907 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:12,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:12,907 INFO L85 PathProgramCache]: Analyzing trace with hash 539943655, now seen corresponding path program 10 times [2024-06-27 18:37:12,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:12,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739714561] [2024-06-27 18:37:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:13,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739714561] [2024-06-27 18:37:13,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739714561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:13,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:13,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:37:13,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369267462] [2024-06-27 18:37:13,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:13,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:37:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:37:13,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:37:13,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2024-06-27 18:37:13,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 721 transitions, 10964 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:13,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:13,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2024-06-27 18:37:13,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:16,044 INFO L124 PetriNetUnfolderBase]: 3639/6691 cut-off events. [2024-06-27 18:37:16,045 INFO L125 PetriNetUnfolderBase]: For 409297/409610 co-relation queries the response was YES. [2024-06-27 18:37:16,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46357 conditions, 6691 events. 3639/6691 cut-off events. For 409297/409610 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 51847 event pairs, 795 based on Foata normal form. 137/6629 useless extension candidates. Maximal degree in co-relation 46072. Up to 5308 conditions per place. [2024-06-27 18:37:16,175 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 595 selfloop transitions, 112 changer transitions 0/762 dead transitions. [2024-06-27 18:37:16,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 762 transitions, 12658 flow [2024-06-27 18:37:16,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 18:37:16,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184149184149184 [2024-06-27 18:37:16,176 INFO L175 Difference]: Start difference. First operand has 586 places, 721 transitions, 10964 flow. Second operand 11 states and 211 transitions. [2024-06-27 18:37:16,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 762 transitions, 12658 flow [2024-06-27 18:37:20,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 762 transitions, 12465 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 18:37:20,809 INFO L231 Difference]: Finished difference. Result has 593 places, 726 transitions, 11144 flow [2024-06-27 18:37:20,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10810, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11144, PETRI_PLACES=593, PETRI_TRANSITIONS=726} [2024-06-27 18:37:20,810 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 550 predicate places. [2024-06-27 18:37:20,810 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 726 transitions, 11144 flow [2024-06-27 18:37:20,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:20,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:20,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:20,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 18:37:20,810 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:20,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:20,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1229413672, now seen corresponding path program 1 times [2024-06-27 18:37:20,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:20,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939266169] [2024-06-27 18:37:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:20,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:21,718 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 18:37:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939266169] [2024-06-27 18:37:21,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939266169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:21,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:21,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224831422] [2024-06-27 18:37:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:21,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:21,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:21,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:37:21,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 726 transitions, 11144 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:21,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:21,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:37:21,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:24,212 INFO L124 PetriNetUnfolderBase]: 3927/6974 cut-off events. [2024-06-27 18:37:24,213 INFO L125 PetriNetUnfolderBase]: For 446692/447155 co-relation queries the response was YES. [2024-06-27 18:37:24,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49065 conditions, 6974 events. 3927/6974 cut-off events. For 446692/447155 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 52237 event pairs, 832 based on Foata normal form. 135/6937 useless extension candidates. Maximal degree in co-relation 48779. Up to 5355 conditions per place. [2024-06-27 18:37:24,346 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 594 selfloop transitions, 178 changer transitions 0/781 dead transitions. [2024-06-27 18:37:24,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 781 transitions, 13500 flow [2024-06-27 18:37:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:37:24,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47785547785547783 [2024-06-27 18:37:24,348 INFO L175 Difference]: Start difference. First operand has 593 places, 726 transitions, 11144 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:37:24,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 781 transitions, 13500 flow [2024-06-27 18:37:30,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 781 transitions, 13264 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:37:30,122 INFO L231 Difference]: Finished difference. Result has 598 places, 738 transitions, 11695 flow [2024-06-27 18:37:30,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10908, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11695, PETRI_PLACES=598, PETRI_TRANSITIONS=738} [2024-06-27 18:37:30,123 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 555 predicate places. [2024-06-27 18:37:30,123 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 738 transitions, 11695 flow [2024-06-27 18:37:30,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:30,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:30,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:30,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 18:37:30,124 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:30,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:30,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1638410622, now seen corresponding path program 2 times [2024-06-27 18:37:30,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:30,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619977514] [2024-06-27 18:37:30,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:31,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:31,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619977514] [2024-06-27 18:37:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619977514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:31,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:31,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147795338] [2024-06-27 18:37:31,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:31,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:31,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:31,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:37:31,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 738 transitions, 11695 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:31,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:31,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:37:31,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:33,574 INFO L124 PetriNetUnfolderBase]: 3919/7021 cut-off events. [2024-06-27 18:37:33,574 INFO L125 PetriNetUnfolderBase]: For 421451/421940 co-relation queries the response was YES. [2024-06-27 18:37:33,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49381 conditions, 7021 events. 3919/7021 cut-off events. For 421451/421940 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 53053 event pairs, 871 based on Foata normal form. 185/7032 useless extension candidates. Maximal degree in co-relation 49092. Up to 5714 conditions per place. [2024-06-27 18:37:33,715 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 593 selfloop transitions, 177 changer transitions 0/779 dead transitions. [2024-06-27 18:37:33,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 779 transitions, 13421 flow [2024-06-27 18:37:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:33,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:37:33,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:37:33,717 INFO L175 Difference]: Start difference. First operand has 598 places, 738 transitions, 11695 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:37:33,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 779 transitions, 13421 flow [2024-06-27 18:37:38,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 779 transitions, 13194 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 18:37:38,492 INFO L231 Difference]: Finished difference. Result has 603 places, 738 transitions, 11841 flow [2024-06-27 18:37:38,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11468, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11841, PETRI_PLACES=603, PETRI_TRANSITIONS=738} [2024-06-27 18:37:38,493 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 560 predicate places. [2024-06-27 18:37:38,493 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 738 transitions, 11841 flow [2024-06-27 18:37:38,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:38,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:38,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:38,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 18:37:38,493 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:38,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:38,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1548917652, now seen corresponding path program 3 times [2024-06-27 18:37:38,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:38,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449932951] [2024-06-27 18:37:38,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:39,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:39,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449932951] [2024-06-27 18:37:39,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449932951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:39,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:39,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:37:39,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481101462] [2024-06-27 18:37:39,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:39,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:37:39,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:39,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:37:39,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:37:39,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:37:39,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 738 transitions, 11841 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:39,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:39,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:37:39,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:41,947 INFO L124 PetriNetUnfolderBase]: 3956/6999 cut-off events. [2024-06-27 18:37:41,947 INFO L125 PetriNetUnfolderBase]: For 425846/426331 co-relation queries the response was YES. [2024-06-27 18:37:42,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49598 conditions, 6999 events. 3956/6999 cut-off events. For 425846/426331 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 52264 event pairs, 906 based on Foata normal form. 145/6961 useless extension candidates. Maximal degree in co-relation 49307. Up to 5997 conditions per place. [2024-06-27 18:37:42,083 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 657 selfloop transitions, 109 changer transitions 0/775 dead transitions. [2024-06-27 18:37:42,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 775 transitions, 13564 flow [2024-06-27 18:37:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:42,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:37:42,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46853146853146854 [2024-06-27 18:37:42,084 INFO L175 Difference]: Start difference. First operand has 603 places, 738 transitions, 11841 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:37:42,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 775 transitions, 13564 flow [2024-06-27 18:37:48,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 775 transitions, 13212 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:48,499 INFO L231 Difference]: Finished difference. Result has 607 places, 744 transitions, 11806 flow [2024-06-27 18:37:48,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11489, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11806, PETRI_PLACES=607, PETRI_TRANSITIONS=744} [2024-06-27 18:37:48,500 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 564 predicate places. [2024-06-27 18:37:48,500 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 744 transitions, 11806 flow [2024-06-27 18:37:48,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:48,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:48,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:48,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 18:37:48,501 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:48,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash 945348206, now seen corresponding path program 4 times [2024-06-27 18:37:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:48,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753616150] [2024-06-27 18:37:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:48,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:49,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:49,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753616150] [2024-06-27 18:37:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753616150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:49,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:49,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:49,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582263456] [2024-06-27 18:37:49,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:49,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:49,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:49,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:49,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:49,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:37:49,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 744 transitions, 11806 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:49,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:49,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:37:49,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:52,474 INFO L124 PetriNetUnfolderBase]: 3996/7075 cut-off events. [2024-06-27 18:37:52,475 INFO L125 PetriNetUnfolderBase]: For 432344/432825 co-relation queries the response was YES. [2024-06-27 18:37:52,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50353 conditions, 7075 events. 3996/7075 cut-off events. For 432344/432825 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 53002 event pairs, 961 based on Foata normal form. 143/7036 useless extension candidates. Maximal degree in co-relation 50059. Up to 6060 conditions per place. [2024-06-27 18:37:52,592 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 704 selfloop transitions, 78 changer transitions 0/791 dead transitions. [2024-06-27 18:37:52,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 791 transitions, 13649 flow [2024-06-27 18:37:52,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:37:52,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:37:52,601 INFO L175 Difference]: Start difference. First operand has 607 places, 744 transitions, 11806 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:37:52,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 791 transitions, 13649 flow [2024-06-27 18:37:58,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 791 transitions, 13489 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:37:58,980 INFO L231 Difference]: Finished difference. Result has 614 places, 749 transitions, 11896 flow [2024-06-27 18:37:58,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11646, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11896, PETRI_PLACES=614, PETRI_TRANSITIONS=749} [2024-06-27 18:37:58,980 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 571 predicate places. [2024-06-27 18:37:58,981 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 749 transitions, 11896 flow [2024-06-27 18:37:58,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:37:58,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:58,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:37:58,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 18:37:58,981 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:37:58,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1922649068, now seen corresponding path program 5 times [2024-06-27 18:37:58,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:58,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504014708] [2024-06-27 18:37:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:58,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:37:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:59,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504014708] [2024-06-27 18:37:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504014708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:59,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:59,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:59,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708106366] [2024-06-27 18:37:59,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:59,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:59,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:59,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:59,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:00,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:38:00,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 749 transitions, 11896 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:00,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:00,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:38:00,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:03,421 INFO L124 PetriNetUnfolderBase]: 4039/7130 cut-off events. [2024-06-27 18:38:03,421 INFO L125 PetriNetUnfolderBase]: For 474478/474959 co-relation queries the response was YES. [2024-06-27 18:38:03,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52070 conditions, 7130 events. 4039/7130 cut-off events. For 474478/474959 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 53345 event pairs, 956 based on Foata normal form. 143/7083 useless extension candidates. Maximal degree in co-relation 51773. Up to 6048 conditions per place. [2024-06-27 18:38:03,566 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 707 selfloop transitions, 79 changer transitions 0/795 dead transitions. [2024-06-27 18:38:03,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 795 transitions, 14110 flow [2024-06-27 18:38:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:38:03,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755244755244755 [2024-06-27 18:38:03,568 INFO L175 Difference]: Start difference. First operand has 614 places, 749 transitions, 11896 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:38:03,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 795 transitions, 14110 flow [2024-06-27 18:38:10,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 795 transitions, 13941 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:10,184 INFO L231 Difference]: Finished difference. Result has 619 places, 751 transitions, 11971 flow [2024-06-27 18:38:10,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11727, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11971, PETRI_PLACES=619, PETRI_TRANSITIONS=751} [2024-06-27 18:38:10,184 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 576 predicate places. [2024-06-27 18:38:10,185 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 751 transitions, 11971 flow [2024-06-27 18:38:10,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:10,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:10,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:10,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 18:38:10,185 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:10,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:10,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1934649354, now seen corresponding path program 6 times [2024-06-27 18:38:10,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:10,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6167295] [2024-06-27 18:38:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:10,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:11,113 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 18:38:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6167295] [2024-06-27 18:38:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6167295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:11,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:11,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112204045] [2024-06-27 18:38:11,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:11,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:11,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:11,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:11,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:38:11,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 751 transitions, 11971 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:11,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:11,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:38:11,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:14,376 INFO L124 PetriNetUnfolderBase]: 4036/7141 cut-off events. [2024-06-27 18:38:14,376 INFO L125 PetriNetUnfolderBase]: For 445444/445937 co-relation queries the response was YES. [2024-06-27 18:38:14,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51176 conditions, 7141 events. 4036/7141 cut-off events. For 445444/445937 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 53515 event pairs, 971 based on Foata normal form. 147/7104 useless extension candidates. Maximal degree in co-relation 50878. Up to 6124 conditions per place. [2024-06-27 18:38:14,505 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 704 selfloop transitions, 79 changer transitions 0/792 dead transitions. [2024-06-27 18:38:14,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 792 transitions, 13739 flow [2024-06-27 18:38:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:38:14,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086247086247085 [2024-06-27 18:38:14,506 INFO L175 Difference]: Start difference. First operand has 619 places, 751 transitions, 11971 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:38:14,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 792 transitions, 13739 flow [2024-06-27 18:38:20,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 792 transitions, 13576 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:20,776 INFO L231 Difference]: Finished difference. Result has 623 places, 751 transitions, 11970 flow [2024-06-27 18:38:20,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11808, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11970, PETRI_PLACES=623, PETRI_TRANSITIONS=751} [2024-06-27 18:38:20,783 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 580 predicate places. [2024-06-27 18:38:20,783 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 751 transitions, 11970 flow [2024-06-27 18:38:20,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:20,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:20,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:20,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 18:38:20,785 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:20,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:20,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1229229098, now seen corresponding path program 1 times [2024-06-27 18:38:20,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:20,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047296353] [2024-06-27 18:38:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:20,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:21,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:21,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047296353] [2024-06-27 18:38:21,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047296353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:21,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:21,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:21,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25987765] [2024-06-27 18:38:21,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:21,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:21,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:21,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:21,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:21,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:38:21,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 751 transitions, 11970 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:21,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:21,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:38:21,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:24,933 INFO L124 PetriNetUnfolderBase]: 4025/7221 cut-off events. [2024-06-27 18:38:24,933 INFO L125 PetriNetUnfolderBase]: For 411894/412385 co-relation queries the response was YES. [2024-06-27 18:38:25,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50574 conditions, 7221 events. 4025/7221 cut-off events. For 411894/412385 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 54920 event pairs, 877 based on Foata normal form. 184/7223 useless extension candidates. Maximal degree in co-relation 50274. Up to 5859 conditions per place. [2024-06-27 18:38:25,059 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 611 selfloop transitions, 180 changer transitions 0/800 dead transitions. [2024-06-27 18:38:25,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 800 transitions, 13848 flow [2024-06-27 18:38:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:38:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:38:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-27 18:38:25,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-27 18:38:25,061 INFO L175 Difference]: Start difference. First operand has 623 places, 751 transitions, 11970 flow. Second operand 12 states and 219 transitions. [2024-06-27 18:38:25,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 800 transitions, 13848 flow [2024-06-27 18:38:30,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 800 transitions, 13639 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 18:38:30,440 INFO L231 Difference]: Finished difference. Result has 624 places, 755 transitions, 12228 flow [2024-06-27 18:38:30,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11761, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12228, PETRI_PLACES=624, PETRI_TRANSITIONS=755} [2024-06-27 18:38:30,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 581 predicate places. [2024-06-27 18:38:30,441 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 755 transitions, 12228 flow [2024-06-27 18:38:30,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:30,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:30,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:30,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 18:38:30,442 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:30,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1915969064, now seen corresponding path program 1 times [2024-06-27 18:38:30,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:30,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280899463] [2024-06-27 18:38:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:30,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:31,588 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 18:38:31,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:31,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280899463] [2024-06-27 18:38:31,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280899463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:31,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:31,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:31,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234369157] [2024-06-27 18:38:31,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:31,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:31,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:31,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:38:31,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 755 transitions, 12228 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:31,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:31,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:38:31,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:34,774 INFO L124 PetriNetUnfolderBase]: 4052/7282 cut-off events. [2024-06-27 18:38:34,774 INFO L125 PetriNetUnfolderBase]: For 437569/438054 co-relation queries the response was YES. [2024-06-27 18:38:34,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51633 conditions, 7282 events. 4052/7282 cut-off events. For 437569/438054 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 55540 event pairs, 858 based on Foata normal form. 183/7292 useless extension candidates. Maximal degree in co-relation 51332. Up to 5709 conditions per place. [2024-06-27 18:38:34,905 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 609 selfloop transitions, 187 changer transitions 0/805 dead transitions. [2024-06-27 18:38:34,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 805 transitions, 14176 flow [2024-06-27 18:38:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:38:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:38:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 18:38:34,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47649572649572647 [2024-06-27 18:38:34,907 INFO L175 Difference]: Start difference. First operand has 624 places, 755 transitions, 12228 flow. Second operand 12 states and 223 transitions. [2024-06-27 18:38:34,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 805 transitions, 14176 flow [2024-06-27 18:38:41,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 805 transitions, 13779 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:41,479 INFO L231 Difference]: Finished difference. Result has 627 places, 758 transitions, 12320 flow [2024-06-27 18:38:41,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11831, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=755, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12320, PETRI_PLACES=627, PETRI_TRANSITIONS=758} [2024-06-27 18:38:41,480 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 584 predicate places. [2024-06-27 18:38:41,480 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 758 transitions, 12320 flow [2024-06-27 18:38:41,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:41,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:41,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:41,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 18:38:41,481 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:41,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:41,481 INFO L85 PathProgramCache]: Analyzing trace with hash -50676338, now seen corresponding path program 7 times [2024-06-27 18:38:41,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:41,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902215914] [2024-06-27 18:38:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:41,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:42,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:42,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:42,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902215914] [2024-06-27 18:38:42,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902215914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:42,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:42,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:42,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294104839] [2024-06-27 18:38:42,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:42,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:42,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:42,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:42,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:42,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:38:42,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 758 transitions, 12320 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:42,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:42,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:38:42,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:45,726 INFO L124 PetriNetUnfolderBase]: 4084/7361 cut-off events. [2024-06-27 18:38:45,726 INFO L125 PetriNetUnfolderBase]: For 446791/447266 co-relation queries the response was YES. [2024-06-27 18:38:45,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52818 conditions, 7361 events. 4084/7361 cut-off events. For 446791/447266 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 56433 event pairs, 897 based on Foata normal form. 139/7316 useless extension candidates. Maximal degree in co-relation 52516. Up to 5825 conditions per place. [2024-06-27 18:38:45,855 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 631 selfloop transitions, 165 changer transitions 0/805 dead transitions. [2024-06-27 18:38:45,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 805 transitions, 14210 flow [2024-06-27 18:38:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:38:45,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47785547785547783 [2024-06-27 18:38:45,857 INFO L175 Difference]: Start difference. First operand has 627 places, 758 transitions, 12320 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:38:45,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 805 transitions, 14210 flow [2024-06-27 18:38:52,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 805 transitions, 13747 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-06-27 18:38:52,672 INFO L231 Difference]: Finished difference. Result has 629 places, 764 transitions, 12287 flow [2024-06-27 18:38:52,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11857, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12287, PETRI_PLACES=629, PETRI_TRANSITIONS=764} [2024-06-27 18:38:52,673 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 586 predicate places. [2024-06-27 18:38:52,673 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 764 transitions, 12287 flow [2024-06-27 18:38:52,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:52,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:52,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:52,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 18:38:52,673 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:38:52,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1651076332, now seen corresponding path program 8 times [2024-06-27 18:38:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780654255] [2024-06-27 18:38:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:53,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780654255] [2024-06-27 18:38:53,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780654255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:53,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:53,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:53,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340178191] [2024-06-27 18:38:53,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:53,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:53,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:53,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:53,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:53,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:38:53,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 764 transitions, 12287 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:53,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:53,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:38:53,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:57,030 INFO L124 PetriNetUnfolderBase]: 4127/7337 cut-off events. [2024-06-27 18:38:57,030 INFO L125 PetriNetUnfolderBase]: For 497691/498166 co-relation queries the response was YES. [2024-06-27 18:38:57,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53934 conditions, 7337 events. 4127/7337 cut-off events. For 497691/498166 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 55480 event pairs, 950 based on Foata normal form. 139/7282 useless extension candidates. Maximal degree in co-relation 53630. Up to 6083 conditions per place. [2024-06-27 18:38:57,162 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 716 selfloop transitions, 84 changer transitions 0/809 dead transitions. [2024-06-27 18:38:57,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 809 transitions, 14553 flow [2024-06-27 18:38:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:57,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:38:57,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801864801864802 [2024-06-27 18:38:57,164 INFO L175 Difference]: Start difference. First operand has 629 places, 764 transitions, 12287 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:38:57,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 809 transitions, 14553 flow [2024-06-27 18:39:03,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 809 transitions, 14196 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:03,523 INFO L231 Difference]: Finished difference. Result has 634 places, 766 transitions, 12192 flow [2024-06-27 18:39:03,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11930, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12192, PETRI_PLACES=634, PETRI_TRANSITIONS=766} [2024-06-27 18:39:03,523 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 591 predicate places. [2024-06-27 18:39:03,524 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 766 transitions, 12192 flow [2024-06-27 18:39:03,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:03,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:03,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:03,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 18:39:03,524 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:03,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1644642592, now seen corresponding path program 9 times [2024-06-27 18:39:03,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:03,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535716335] [2024-06-27 18:39:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:03,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:04,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:04,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535716335] [2024-06-27 18:39:04,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535716335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:04,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:04,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:39:04,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277804578] [2024-06-27 18:39:04,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:04,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:39:04,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:39:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:39:04,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:39:04,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 766 transitions, 12192 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:04,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:04,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:39:04,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:07,615 INFO L124 PetriNetUnfolderBase]: 4156/7389 cut-off events. [2024-06-27 18:39:07,615 INFO L125 PetriNetUnfolderBase]: For 501940/502427 co-relation queries the response was YES. [2024-06-27 18:39:07,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53577 conditions, 7389 events. 4156/7389 cut-off events. For 501940/502427 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 55991 event pairs, 957 based on Foata normal form. 143/7343 useless extension candidates. Maximal degree in co-relation 53272. Up to 6209 conditions per place. [2024-06-27 18:39:07,733 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 718 selfloop transitions, 82 changer transitions 0/809 dead transitions. [2024-06-27 18:39:07,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 809 transitions, 14059 flow [2024-06-27 18:39:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:39:07,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47785547785547783 [2024-06-27 18:39:07,735 INFO L175 Difference]: Start difference. First operand has 634 places, 766 transitions, 12192 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:39:07,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 809 transitions, 14059 flow [2024-06-27 18:39:14,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 809 transitions, 13890 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:14,975 INFO L231 Difference]: Finished difference. Result has 639 places, 768 transitions, 12256 flow [2024-06-27 18:39:14,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12037, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12256, PETRI_PLACES=639, PETRI_TRANSITIONS=768} [2024-06-27 18:39:14,976 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 596 predicate places. [2024-06-27 18:39:14,976 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 768 transitions, 12256 flow [2024-06-27 18:39:14,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:14,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:14,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:14,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 18:39:14,976 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:14,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:14,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1422997552, now seen corresponding path program 10 times [2024-06-27 18:39:14,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:14,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208003848] [2024-06-27 18:39:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:15,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208003848] [2024-06-27 18:39:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208003848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:15,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:15,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:39:15,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959672939] [2024-06-27 18:39:15,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:15,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:39:15,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:15,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:39:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:39:15,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:39:15,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 768 transitions, 12256 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:15,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:15,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:39:15,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:18,830 INFO L124 PetriNetUnfolderBase]: 4153/7377 cut-off events. [2024-06-27 18:39:18,831 INFO L125 PetriNetUnfolderBase]: For 465037/465524 co-relation queries the response was YES. [2024-06-27 18:39:18,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52931 conditions, 7377 events. 4153/7377 cut-off events. For 465037/465524 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55834 event pairs, 958 based on Foata normal form. 143/7333 useless extension candidates. Maximal degree in co-relation 52623. Up to 6204 conditions per place. [2024-06-27 18:39:18,954 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 714 selfloop transitions, 86 changer transitions 0/809 dead transitions. [2024-06-27 18:39:18,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 809 transitions, 14068 flow [2024-06-27 18:39:18,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:18,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:39:18,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4731934731934732 [2024-06-27 18:39:18,955 INFO L175 Difference]: Start difference. First operand has 639 places, 768 transitions, 12256 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:39:18,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 809 transitions, 14068 flow [2024-06-27 18:39:26,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 809 transitions, 13860 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:26,658 INFO L231 Difference]: Finished difference. Result has 642 places, 768 transitions, 12224 flow [2024-06-27 18:39:26,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12048, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12224, PETRI_PLACES=642, PETRI_TRANSITIONS=768} [2024-06-27 18:39:26,658 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 599 predicate places. [2024-06-27 18:39:26,659 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 768 transitions, 12224 flow [2024-06-27 18:39:26,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:26,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:26,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:26,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 18:39:26,659 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:26,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:26,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1644396328, now seen corresponding path program 2 times [2024-06-27 18:39:26,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:26,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750259419] [2024-06-27 18:39:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:26,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:27,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:27,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750259419] [2024-06-27 18:39:27,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750259419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:27,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:27,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:27,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780236355] [2024-06-27 18:39:27,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:27,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:39:27,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 768 transitions, 12224 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:27,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:27,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:39:27,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:30,481 INFO L124 PetriNetUnfolderBase]: 4175/7453 cut-off events. [2024-06-27 18:39:30,482 INFO L125 PetriNetUnfolderBase]: For 470418/470877 co-relation queries the response was YES. [2024-06-27 18:39:30,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53235 conditions, 7453 events. 4175/7453 cut-off events. For 470418/470877 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 56736 event pairs, 956 based on Foata normal form. 149/7427 useless extension candidates. Maximal degree in co-relation 52926. Up to 5963 conditions per place. [2024-06-27 18:39:30,623 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 716 selfloop transitions, 95 changer transitions 0/820 dead transitions. [2024-06-27 18:39:30,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 820 transitions, 14250 flow [2024-06-27 18:39:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:39:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:39:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-27 18:39:30,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893162393162393 [2024-06-27 18:39:30,625 INFO L175 Difference]: Start difference. First operand has 642 places, 768 transitions, 12224 flow. Second operand 12 states and 229 transitions. [2024-06-27 18:39:30,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 820 transitions, 14250 flow [2024-06-27 18:39:37,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 820 transitions, 14048 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 18:39:37,231 INFO L231 Difference]: Finished difference. Result has 642 places, 771 transitions, 12332 flow [2024-06-27 18:39:37,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12022, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12332, PETRI_PLACES=642, PETRI_TRANSITIONS=771} [2024-06-27 18:39:37,232 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 599 predicate places. [2024-06-27 18:39:37,232 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 771 transitions, 12332 flow [2024-06-27 18:39:37,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:37,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:37,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:37,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 18:39:37,233 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:37,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:37,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1241171726, now seen corresponding path program 3 times [2024-06-27 18:39:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:37,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884132781] [2024-06-27 18:39:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:37,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:38,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:38,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884132781] [2024-06-27 18:39:38,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884132781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:38,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:38,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:38,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656836586] [2024-06-27 18:39:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:38,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:38,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:38,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:39:38,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 771 transitions, 12332 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:38,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:38,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:39:38,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:41,198 INFO L124 PetriNetUnfolderBase]: 4197/7448 cut-off events. [2024-06-27 18:39:41,198 INFO L125 PetriNetUnfolderBase]: For 482647/483140 co-relation queries the response was YES. [2024-06-27 18:39:41,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54243 conditions, 7448 events. 4197/7448 cut-off events. For 482647/483140 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 56356 event pairs, 919 based on Foata normal form. 155/7429 useless extension candidates. Maximal degree in co-relation 53935. Up to 5997 conditions per place. [2024-06-27 18:39:41,339 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 706 selfloop transitions, 107 changer transitions 0/822 dead transitions. [2024-06-27 18:39:41,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 822 transitions, 14360 flow [2024-06-27 18:39:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:39:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:39:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-27 18:39:41,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-06-27 18:39:41,340 INFO L175 Difference]: Start difference. First operand has 642 places, 771 transitions, 12332 flow. Second operand 12 states and 226 transitions. [2024-06-27 18:39:41,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 822 transitions, 14360 flow [2024-06-27 18:39:48,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 822 transitions, 14074 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-06-27 18:39:48,383 INFO L231 Difference]: Finished difference. Result has 644 places, 774 transitions, 12386 flow [2024-06-27 18:39:48,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12046, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12386, PETRI_PLACES=644, PETRI_TRANSITIONS=774} [2024-06-27 18:39:48,384 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 601 predicate places. [2024-06-27 18:39:48,384 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 774 transitions, 12386 flow [2024-06-27 18:39:48,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:48,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:48,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:48,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 18:39:48,384 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:48,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1414409188, now seen corresponding path program 4 times [2024-06-27 18:39:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857688670] [2024-06-27 18:39:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:49,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857688670] [2024-06-27 18:39:49,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857688670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:49,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:49,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:49,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176195865] [2024-06-27 18:39:49,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:49,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:49,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:49,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:39:49,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 774 transitions, 12386 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:49,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:49,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:39:49,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:52,438 INFO L124 PetriNetUnfolderBase]: 4242/7512 cut-off events. [2024-06-27 18:39:52,439 INFO L125 PetriNetUnfolderBase]: For 511196/511681 co-relation queries the response was YES. [2024-06-27 18:39:52,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55759 conditions, 7512 events. 4242/7512 cut-off events. For 511196/511681 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 56814 event pairs, 915 based on Foata normal form. 152/7487 useless extension candidates. Maximal degree in co-relation 55450. Up to 5962 conditions per place. [2024-06-27 18:39:52,581 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 706 selfloop transitions, 120 changer transitions 0/835 dead transitions. [2024-06-27 18:39:52,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 835 transitions, 14938 flow [2024-06-27 18:39:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:39:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:39:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 246 transitions. [2024-06-27 18:39:52,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48520710059171596 [2024-06-27 18:39:52,583 INFO L175 Difference]: Start difference. First operand has 644 places, 774 transitions, 12386 flow. Second operand 13 states and 246 transitions. [2024-06-27 18:39:52,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 835 transitions, 14938 flow [2024-06-27 18:40:00,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 835 transitions, 14622 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-06-27 18:40:00,103 INFO L231 Difference]: Finished difference. Result has 648 places, 781 transitions, 12549 flow [2024-06-27 18:40:00,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12070, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12549, PETRI_PLACES=648, PETRI_TRANSITIONS=781} [2024-06-27 18:40:00,104 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 605 predicate places. [2024-06-27 18:40:00,104 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 781 transitions, 12549 flow [2024-06-27 18:40:00,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:00,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:00,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:00,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 18:40:00,105 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:00,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1422751288, now seen corresponding path program 5 times [2024-06-27 18:40:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:00,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830419741] [2024-06-27 18:40:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:00,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:01,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830419741] [2024-06-27 18:40:01,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830419741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:01,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:01,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:01,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344322020] [2024-06-27 18:40:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:01,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:01,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:01,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:01,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:40:01,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 781 transitions, 12549 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:01,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:01,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:40:01,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:04,207 INFO L124 PetriNetUnfolderBase]: 4267/7576 cut-off events. [2024-06-27 18:40:04,208 INFO L125 PetriNetUnfolderBase]: For 542693/543186 co-relation queries the response was YES. [2024-06-27 18:40:04,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57170 conditions, 7576 events. 4267/7576 cut-off events. For 542693/543186 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 57395 event pairs, 930 based on Foata normal form. 155/7557 useless extension candidates. Maximal degree in co-relation 56859. Up to 6105 conditions per place. [2024-06-27 18:40:04,348 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 726 selfloop transitions, 98 changer transitions 0/833 dead transitions. [2024-06-27 18:40:04,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 833 transitions, 14654 flow [2024-06-27 18:40:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:40:04,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:40:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-27 18:40:04,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-27 18:40:04,350 INFO L175 Difference]: Start difference. First operand has 648 places, 781 transitions, 12549 flow. Second operand 12 states and 228 transitions. [2024-06-27 18:40:04,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 833 transitions, 14654 flow [2024-06-27 18:40:13,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 833 transitions, 14385 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:13,580 INFO L231 Difference]: Finished difference. Result has 651 places, 784 transitions, 12617 flow [2024-06-27 18:40:13,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12308, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12617, PETRI_PLACES=651, PETRI_TRANSITIONS=784} [2024-06-27 18:40:13,580 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 608 predicate places. [2024-06-27 18:40:13,581 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 784 transitions, 12617 flow [2024-06-27 18:40:13,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:13,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:13,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:13,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 18:40:13,581 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:13,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash 12439934, now seen corresponding path program 6 times [2024-06-27 18:40:13,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:13,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3101741] [2024-06-27 18:40:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:13,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:14,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:14,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3101741] [2024-06-27 18:40:14,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3101741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:14,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:14,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:14,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200373885] [2024-06-27 18:40:14,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:14,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:14,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:14,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:14,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-27 18:40:14,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 784 transitions, 12617 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:14,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:14,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-27 18:40:14,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand