./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi004.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/rfi004.i ./goblint.2024-06-19_11-23-25.files/protection/rfi004.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 18:40:41,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:40:41,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:40:41,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:40:41,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:40:41,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:40:41,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:40:41,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:40:41,309 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:40:41,310 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:40:41,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:40:41,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:40:41,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:40:41,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:40:41,311 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:40:41,311 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:40:41,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:40:41,312 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:40:41,312 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:40:41,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:40:41,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:40:41,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:40:41,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:40:41,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:40:41,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:40:41,314 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:40:41,314 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:40:41,314 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:40:41,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:40:41,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:40:41,315 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:40:41,315 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:40:41,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:40:41,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:40:41,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:40:41,316 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:40:41,316 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:40:41,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:40:41,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:40:41,317 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:40:41,317 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:40:41,317 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:40:41,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:40:41,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:40:41,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:40:41,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:40:41,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:40:41,537 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:40:41,537 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:40:41,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi004.yml/witness.yml [2024-06-27 18:40:41,680 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:40:41,680 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:40:41,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-27 18:40:42,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:40:42,804 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:40:42,804 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-27 18:40:42,815 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60239d167/5a5aab6fa9a34e438b05b68d76470721/FLAG5d3ae2bf8 [2024-06-27 18:40:42,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60239d167/5a5aab6fa9a34e438b05b68d76470721 [2024-06-27 18:40:42,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:40:42,870 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:40:42,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:40:42,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:40:42,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:40:42,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:40:41" (1/2) ... [2024-06-27 18:40:42,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bcbfee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:40:42, skipping insertion in model container [2024-06-27 18:40:42,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:40:41" (1/2) ... [2024-06-27 18:40:42,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e451e1b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:40:42, skipping insertion in model container [2024-06-27 18:40:42,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:40:42" (2/2) ... [2024-06-27 18:40:42,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bcbfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:42, skipping insertion in model container [2024-06-27 18:40:42,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:40:42" (2/2) ... [2024-06-27 18:40:42,887 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:40:42,936 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:40:42,937 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:40:42,938 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 18:40:42,938 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:40:42,938 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-27 18:40:42,974 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:40:43,133 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/rfi004.i[983,996] [2024-06-27 18:40:43,249 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:40:43,256 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:40:43,284 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/rfi004.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:40:43,333 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:40:43,361 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:40:43,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43 WrapperNode [2024-06-27 18:40:43,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:40:43,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:40:43,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:40:43,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:40:43,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,400 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-06-27 18:40:43,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:40:43,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:40:43,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:40:43,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:40:43,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,438 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 18:40:43,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:40:43,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:40:43,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:40:43,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:40:43,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (1/1) ... [2024-06-27 18:40:43,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:40:43,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:40:43,501 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 18:40:43,509 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 18:40:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:40:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:40:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:40:43,533 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:40:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:40:43,534 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:40:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:40:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:40:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:40:43,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:40:43,535 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 18:40:43,667 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:40:43,669 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:40:43,923 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:40:43,924 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:40:44,071 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:40:44,071 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:40:44,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:40:44 BoogieIcfgContainer [2024-06-27 18:40:44,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:40:44,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:40:44,075 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:40:44,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:40:44,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:40:41" (1/4) ... [2024-06-27 18:40:44,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205dc8f5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:40:44, skipping insertion in model container [2024-06-27 18:40:44,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:40:42" (2/4) ... [2024-06-27 18:40:44,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205dc8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:40:44, skipping insertion in model container [2024-06-27 18:40:44,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:43" (3/4) ... [2024-06-27 18:40:44,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205dc8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:40:44, skipping insertion in model container [2024-06-27 18:40:44,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:40:44" (4/4) ... [2024-06-27 18:40:44,084 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-27 18:40:44,128 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:40:44,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:40:44,130 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:40:44,162 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:40:44,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 18:40:44,210 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-27 18:40:44,211 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:40:44,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-27 18:40:44,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 18:40:44,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-27 18:40:44,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:40:44,230 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;@1b27c235, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:40:44,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:40:44,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:40:44,233 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:40:44,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:40:44,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:44,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:40:44,234 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 18:40:44,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:44,238 INFO L85 PathProgramCache]: Analyzing trace with hash 311867539, now seen corresponding path program 1 times [2024-06-27 18:40:44,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:44,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554154698] [2024-06-27 18:40:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:44,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554154698] [2024-06-27 18:40:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554154698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:44,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:44,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:40:44,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270932503] [2024-06-27 18:40:44,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:44,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:40:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:40:44,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:40:44,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-27 18:40:44,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 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 18:40:44,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:44,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-27 18:40:44,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:45,202 INFO L124 PetriNetUnfolderBase]: 384/723 cut-off events. [2024-06-27 18:40:45,202 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 18:40:45,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 723 events. 384/723 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3833 event pairs, 160 based on Foata normal form. 36/705 useless extension candidates. Maximal degree in co-relation 1376. Up to 639 conditions per place. [2024-06-27 18:40:45,211 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 29 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-27 18:40:45,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 167 flow [2024-06-27 18:40:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:40:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:40:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-27 18:40:45,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-06-27 18:40:45,222 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 82 transitions. [2024-06-27 18:40:45,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 167 flow [2024-06-27 18:40:45,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:45,229 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-06-27 18:40:45,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-27 18:40:45,233 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-27 18:40:45,233 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-06-27 18:40:45,233 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 18:40:45,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:45,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:45,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:40:45,237 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 18:40:45,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:45,238 INFO L85 PathProgramCache]: Analyzing trace with hash -942147624, now seen corresponding path program 1 times [2024-06-27 18:40:45,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:45,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18103679] [2024-06-27 18:40:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18103679] [2024-06-27 18:40:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18103679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:45,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:45,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:40:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728985896] [2024-06-27 18:40:45,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:45,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:40:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:40:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:40:45,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 18:40:45,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 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 18:40:45,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:45,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 18:40:45,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:45,847 INFO L124 PetriNetUnfolderBase]: 434/871 cut-off events. [2024-06-27 18:40:45,847 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-06-27 18:40:45,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 871 events. 434/871 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4871 event pairs, 221 based on Foata normal form. 4/805 useless extension candidates. Maximal degree in co-relation 1787. Up to 686 conditions per place. [2024-06-27 18:40:45,852 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-27 18:40:45,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 242 flow [2024-06-27 18:40:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:40:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:40:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-27 18:40:45,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-06-27 18:40:45,854 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 4 states and 104 transitions. [2024-06-27 18:40:45,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 242 flow [2024-06-27 18:40:45,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:40:45,858 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 136 flow [2024-06-27 18:40:45,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-27 18:40:45,859 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-27 18:40:45,859 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 136 flow [2024-06-27 18:40:45,859 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 18:40:45,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:45,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:45,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:40:45,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:45,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash 831935368, now seen corresponding path program 1 times [2024-06-27 18:40:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:45,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273755441] [2024-06-27 18:40:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:45,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:45,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:45,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273755441] [2024-06-27 18:40:45,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273755441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:45,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:45,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:40:45,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976557072] [2024-06-27 18:40:45,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:45,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:40:45,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:45,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:40:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:40:45,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 38 [2024-06-27 18:40:45,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:45,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:45,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 38 [2024-06-27 18:40:45,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:46,014 INFO L124 PetriNetUnfolderBase]: 143/371 cut-off events. [2024-06-27 18:40:46,015 INFO L125 PetriNetUnfolderBase]: For 113/120 co-relation queries the response was YES. [2024-06-27 18:40:46,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 371 events. 143/371 cut-off events. For 113/120 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2016 event pairs, 67 based on Foata normal form. 6/349 useless extension candidates. Maximal degree in co-relation 728. Up to 211 conditions per place. [2024-06-27 18:40:46,016 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 20 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:40:46,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 179 flow [2024-06-27 18:40:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:40:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:40:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-27 18:40:46,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7543859649122807 [2024-06-27 18:40:46,021 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 136 flow. Second operand 3 states and 86 transitions. [2024-06-27 18:40:46,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 179 flow [2024-06-27 18:40:46,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 170 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:46,024 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 116 flow [2024-06-27 18:40:46,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-27 18:40:46,026 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-27 18:40:46,026 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 116 flow [2024-06-27 18:40:46,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:46,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:46,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:46,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:40:46,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:46,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:46,027 INFO L85 PathProgramCache]: Analyzing trace with hash 624878164, now seen corresponding path program 1 times [2024-06-27 18:40:46,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:46,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857996972] [2024-06-27 18:40:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:46,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:46,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:46,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857996972] [2024-06-27 18:40:46,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857996972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:46,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:46,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:40:46,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950723155] [2024-06-27 18:40:46,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:46,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:40:46,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:40:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:40:46,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 18:40:46,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 116 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 18:40:46,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:46,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 18:40:46,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:46,832 INFO L124 PetriNetUnfolderBase]: 373/752 cut-off events. [2024-06-27 18:40:46,832 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-06-27 18:40:46,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 752 events. 373/752 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4046 event pairs, 207 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 1645. Up to 613 conditions per place. [2024-06-27 18:40:46,835 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 35 selfloop transitions, 7 changer transitions 2/55 dead transitions. [2024-06-27 18:40:46,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 250 flow [2024-06-27 18:40:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:40:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:40:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-27 18:40:46,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2024-06-27 18:40:46,837 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 116 flow. Second operand 5 states and 106 transitions. [2024-06-27 18:40:46,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 250 flow [2024-06-27 18:40:46,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:46,839 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 157 flow [2024-06-27 18:40:46,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-27 18:40:46,839 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-27 18:40:46,840 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 157 flow [2024-06-27 18:40:46,840 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 18:40:46,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:46,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:46,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:40:46,840 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 18:40:46,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash -472140624, now seen corresponding path program 1 times [2024-06-27 18:40:46,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:46,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774439114] [2024-06-27 18:40:46,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:46,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:47,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:47,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774439114] [2024-06-27 18:40:47,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774439114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:47,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:47,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:40:47,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136474310] [2024-06-27 18:40:47,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:47,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:40:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:40:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:40:47,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 18:40:47,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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 18:40:47,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:47,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 18:40:47,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:47,951 INFO L124 PetriNetUnfolderBase]: 318/661 cut-off events. [2024-06-27 18:40:47,951 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-06-27 18:40:47,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 661 events. 318/661 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3543 event pairs, 99 based on Foata normal form. 4/642 useless extension candidates. Maximal degree in co-relation 1561. Up to 472 conditions per place. [2024-06-27 18:40:47,954 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 46 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:40:47,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 331 flow [2024-06-27 18:40:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 18:40:47,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-27 18:40:47,955 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 157 flow. Second operand 6 states and 138 transitions. [2024-06-27 18:40:47,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 331 flow [2024-06-27 18:40:47,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 322 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:47,957 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 178 flow [2024-06-27 18:40:47,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-27 18:40:47,958 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-27 18:40:47,958 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 178 flow [2024-06-27 18:40:47,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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 18:40:47,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:47,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:47,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:40:47,959 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 18:40:47,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:47,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2103612338, now seen corresponding path program 1 times [2024-06-27 18:40:47,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:47,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128157907] [2024-06-27 18:40:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:47,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128157907] [2024-06-27 18:40:48,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128157907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:48,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:48,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244478627] [2024-06-27 18:40:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:48,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:48,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:48,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:40:48,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 178 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 18:40:48,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:48,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:40:48,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:48,693 INFO L124 PetriNetUnfolderBase]: 377/776 cut-off events. [2024-06-27 18:40:48,693 INFO L125 PetriNetUnfolderBase]: For 762/762 co-relation queries the response was YES. [2024-06-27 18:40:48,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 776 events. 377/776 cut-off events. For 762/762 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4247 event pairs, 127 based on Foata normal form. 1/751 useless extension candidates. Maximal degree in co-relation 1937. Up to 608 conditions per place. [2024-06-27 18:40:48,697 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2024-06-27 18:40:48,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 326 flow [2024-06-27 18:40:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:48,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-27 18:40:48,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-06-27 18:40:48,698 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 178 flow. Second operand 6 states and 118 transitions. [2024-06-27 18:40:48,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 326 flow [2024-06-27 18:40:48,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 306 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:48,700 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 193 flow [2024-06-27 18:40:48,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-27 18:40:48,700 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-06-27 18:40:48,701 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 193 flow [2024-06-27 18:40:48,701 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 18:40:48,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:48,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:48,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:40:48,701 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 18:40:48,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash -794177869, now seen corresponding path program 1 times [2024-06-27 18:40:48,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:48,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189560942] [2024-06-27 18:40:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:48,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:49,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:49,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189560942] [2024-06-27 18:40:49,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189560942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:49,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:49,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679913339] [2024-06-27 18:40:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:49,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:49,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:40:49,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 193 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 18:40:49,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:49,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:40:49,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:49,425 INFO L124 PetriNetUnfolderBase]: 426/865 cut-off events. [2024-06-27 18:40:49,425 INFO L125 PetriNetUnfolderBase]: For 1086/1086 co-relation queries the response was YES. [2024-06-27 18:40:49,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 865 events. 426/865 cut-off events. For 1086/1086 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4787 event pairs, 137 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 2243. Up to 665 conditions per place. [2024-06-27 18:40:49,430 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 47 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:40:49,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 373 flow [2024-06-27 18:40:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-27 18:40:49,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2024-06-27 18:40:49,431 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 193 flow. Second operand 6 states and 121 transitions. [2024-06-27 18:40:49,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 373 flow [2024-06-27 18:40:49,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 354 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:49,434 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 235 flow [2024-06-27 18:40:49,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-27 18:40:49,435 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-27 18:40:49,435 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 235 flow [2024-06-27 18:40:49,435 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 18:40:49,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:49,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:49,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:40:49,435 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 18:40:49,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:49,436 INFO L85 PathProgramCache]: Analyzing trace with hash -793997449, now seen corresponding path program 2 times [2024-06-27 18:40:49,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:49,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213563946] [2024-06-27 18:40:49,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:49,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213563946] [2024-06-27 18:40:49,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213563946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:49,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:49,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:49,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259907357] [2024-06-27 18:40:49,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:49,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:49,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:49,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:49,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:49,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:40:49,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 235 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 18:40:49,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:49,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:40:49,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:50,139 INFO L124 PetriNetUnfolderBase]: 428/879 cut-off events. [2024-06-27 18:40:50,139 INFO L125 PetriNetUnfolderBase]: For 1543/1543 co-relation queries the response was YES. [2024-06-27 18:40:50,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 879 events. 428/879 cut-off events. For 1543/1543 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4928 event pairs, 128 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 2457. Up to 638 conditions per place. [2024-06-27 18:40:50,145 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 46 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-27 18:40:50,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 415 flow [2024-06-27 18:40:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-27 18:40:50,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2024-06-27 18:40:50,146 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 235 flow. Second operand 6 states and 122 transitions. [2024-06-27 18:40:50,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 415 flow [2024-06-27 18:40:50,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 396 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:50,149 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 263 flow [2024-06-27 18:40:50,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-27 18:40:50,151 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-27 18:40:50,151 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 263 flow [2024-06-27 18:40:50,151 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 18:40:50,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:50,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:50,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:40:50,152 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 18:40:50,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash -787471949, now seen corresponding path program 1 times [2024-06-27 18:40:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693955219] [2024-06-27 18:40:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:50,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:50,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693955219] [2024-06-27 18:40:50,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693955219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:50,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:50,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:50,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45710665] [2024-06-27 18:40:50,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:50,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:50,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:50,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:50,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:40:50,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 263 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 18:40:50,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:50,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:40:50,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:50,933 INFO L124 PetriNetUnfolderBase]: 412/879 cut-off events. [2024-06-27 18:40:50,934 INFO L125 PetriNetUnfolderBase]: For 1647/1647 co-relation queries the response was YES. [2024-06-27 18:40:50,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 879 events. 412/879 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4977 event pairs, 122 based on Foata normal form. 1/845 useless extension candidates. Maximal degree in co-relation 2511. Up to 652 conditions per place. [2024-06-27 18:40:50,939 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 54 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-06-27 18:40:50,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 75 transitions, 459 flow [2024-06-27 18:40:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 18:40:50,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2024-06-27 18:40:50,940 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 263 flow. Second operand 7 states and 137 transitions. [2024-06-27 18:40:50,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 75 transitions, 459 flow [2024-06-27 18:40:50,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 428 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:50,944 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 273 flow [2024-06-27 18:40:50,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-27 18:40:50,945 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-27 18:40:50,945 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 273 flow [2024-06-27 18:40:50,945 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 18:40:50,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:50,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:50,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:40:50,947 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:50,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1150290895, now seen corresponding path program 1 times [2024-06-27 18:40:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:50,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558903691] [2024-06-27 18:40:50,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:50,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:51,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:51,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558903691] [2024-06-27 18:40:51,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558903691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:51,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:51,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:51,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154598386] [2024-06-27 18:40:51,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:51,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:51,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:51,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:40:51,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 273 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 18:40:51,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:51,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:40:51,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:51,834 INFO L124 PetriNetUnfolderBase]: 493/971 cut-off events. [2024-06-27 18:40:51,835 INFO L125 PetriNetUnfolderBase]: For 2193/2193 co-relation queries the response was YES. [2024-06-27 18:40:51,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 971 events. 493/971 cut-off events. For 2193/2193 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5410 event pairs, 151 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 2928. Up to 751 conditions per place. [2024-06-27 18:40:51,840 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 59 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-06-27 18:40:51,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 491 flow [2024-06-27 18:40:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 18:40:51,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075187969924813 [2024-06-27 18:40:51,842 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 273 flow. Second operand 7 states and 135 transitions. [2024-06-27 18:40:51,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 491 flow [2024-06-27 18:40:51,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 466 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:51,845 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 293 flow [2024-06-27 18:40:51,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-27 18:40:51,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-27 18:40:51,847 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 293 flow [2024-06-27 18:40:51,847 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 18:40:51,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:51,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:51,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:40:51,847 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 18:40:51,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -683843911, now seen corresponding path program 2 times [2024-06-27 18:40:51,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:51,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353440603] [2024-06-27 18:40:51,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:51,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:52,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353440603] [2024-06-27 18:40:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353440603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:52,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155222102] [2024-06-27 18:40:52,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:52,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:52,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:52,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:40:52,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 293 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 18:40:52,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:52,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:40:52,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:52,710 INFO L124 PetriNetUnfolderBase]: 531/1055 cut-off events. [2024-06-27 18:40:52,711 INFO L125 PetriNetUnfolderBase]: For 2789/2789 co-relation queries the response was YES. [2024-06-27 18:40:52,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1055 events. 531/1055 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5974 event pairs, 145 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 3291. Up to 715 conditions per place. [2024-06-27 18:40:52,716 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 56 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-27 18:40:52,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 565 flow [2024-06-27 18:40:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:52,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 18:40:52,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2024-06-27 18:40:52,718 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 293 flow. Second operand 7 states and 138 transitions. [2024-06-27 18:40:52,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 565 flow [2024-06-27 18:40:52,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 536 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:52,723 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 345 flow [2024-06-27 18:40:52,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-27 18:40:52,724 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-27 18:40:52,724 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 345 flow [2024-06-27 18:40:52,724 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 18:40:52,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:52,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:52,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:40:52,725 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 18:40:52,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1155883915, now seen corresponding path program 3 times [2024-06-27 18:40:52,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:52,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453144548] [2024-06-27 18:40:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:52,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:53,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:53,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453144548] [2024-06-27 18:40:53,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453144548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:53,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:53,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:53,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626910135] [2024-06-27 18:40:53,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:53,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:53,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:53,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:53,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:40:53,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 345 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 18:40:53,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:53,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:40:53,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:53,457 INFO L124 PetriNetUnfolderBase]: 527/1061 cut-off events. [2024-06-27 18:40:53,457 INFO L125 PetriNetUnfolderBase]: For 3344/3344 co-relation queries the response was YES. [2024-06-27 18:40:53,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3460 conditions, 1061 events. 527/1061 cut-off events. For 3344/3344 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6055 event pairs, 153 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 3432. Up to 712 conditions per place. [2024-06-27 18:40:53,463 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 56 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-27 18:40:53,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 84 transitions, 563 flow [2024-06-27 18:40:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:53,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 18:40:53,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2024-06-27 18:40:53,464 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 345 flow. Second operand 7 states and 138 transitions. [2024-06-27 18:40:53,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 84 transitions, 563 flow [2024-06-27 18:40:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 530 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:53,471 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 355 flow [2024-06-27 18:40:53,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=355, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-27 18:40:53,472 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-27 18:40:53,472 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 355 flow [2024-06-27 18:40:53,472 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 18:40:53,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:53,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:53,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:40:53,473 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 18:40:53,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:53,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1967644910, now seen corresponding path program 1 times [2024-06-27 18:40:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:53,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298443728] [2024-06-27 18:40:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:53,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:54,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298443728] [2024-06-27 18:40:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298443728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:54,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:54,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:54,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870910710] [2024-06-27 18:40:54,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:54,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:54,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:54,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:54,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:54,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:40:54,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 355 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 18:40:54,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:54,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:40:54,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:54,414 INFO L124 PetriNetUnfolderBase]: 507/1029 cut-off events. [2024-06-27 18:40:54,415 INFO L125 PetriNetUnfolderBase]: For 3628/3632 co-relation queries the response was YES. [2024-06-27 18:40:54,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1029 events. 507/1029 cut-off events. For 3628/3632 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6031 event pairs, 161 based on Foata normal form. 3/996 useless extension candidates. Maximal degree in co-relation 3455. Up to 779 conditions per place. [2024-06-27 18:40:54,422 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 61 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-27 18:40:54,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 639 flow [2024-06-27 18:40:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 18:40:54,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-27 18:40:54,424 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 355 flow. Second operand 8 states and 158 transitions. [2024-06-27 18:40:54,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 639 flow [2024-06-27 18:40:54,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 583 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:54,429 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 432 flow [2024-06-27 18:40:54,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=432, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-06-27 18:40:54,430 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-27 18:40:54,430 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 432 flow [2024-06-27 18:40:54,431 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 18:40:54,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:54,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:54,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:40:54,431 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 18:40:54,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1294481170, now seen corresponding path program 2 times [2024-06-27 18:40:54,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:54,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420739368] [2024-06-27 18:40:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:54,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:55,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:55,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420739368] [2024-06-27 18:40:55,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420739368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:55,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:55,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:55,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096593488] [2024-06-27 18:40:55,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:55,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:55,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:55,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:55,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:40:55,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 432 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 18:40:55,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:55,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:40:55,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:55,411 INFO L124 PetriNetUnfolderBase]: 504/1011 cut-off events. [2024-06-27 18:40:55,412 INFO L125 PetriNetUnfolderBase]: For 4388/4392 co-relation queries the response was YES. [2024-06-27 18:40:55,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 1011 events. 504/1011 cut-off events. For 4388/4392 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5886 event pairs, 153 based on Foata normal form. 3/984 useless extension candidates. Maximal degree in co-relation 3599. Up to 751 conditions per place. [2024-06-27 18:40:55,418 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 62 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-27 18:40:55,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 712 flow [2024-06-27 18:40:55,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 18:40:55,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300751879699248 [2024-06-27 18:40:55,419 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 432 flow. Second operand 7 states and 141 transitions. [2024-06-27 18:40:55,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 712 flow [2024-06-27 18:40:55,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 667 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:55,424 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 501 flow [2024-06-27 18:40:55,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-06-27 18:40:55,425 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-27 18:40:55,425 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 501 flow [2024-06-27 18:40:55,426 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 18:40:55,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:55,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:55,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:40:55,426 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 18:40:55,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1299280466, now seen corresponding path program 1 times [2024-06-27 18:40:55,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:55,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647052817] [2024-06-27 18:40:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:55,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:55,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:55,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647052817] [2024-06-27 18:40:55,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647052817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:55,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:55,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:55,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691121373] [2024-06-27 18:40:55,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:55,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:55,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:55,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:55,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:56,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:40:56,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 501 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 18:40:56,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:56,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:40:56,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:56,324 INFO L124 PetriNetUnfolderBase]: 579/1098 cut-off events. [2024-06-27 18:40:56,325 INFO L125 PetriNetUnfolderBase]: For 5358/5358 co-relation queries the response was YES. [2024-06-27 18:40:56,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 1098 events. 579/1098 cut-off events. For 5358/5358 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6205 event pairs, 159 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 4123. Up to 849 conditions per place. [2024-06-27 18:40:56,337 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 80 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-06-27 18:40:56,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 106 transitions, 817 flow [2024-06-27 18:40:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 18:40:56,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-27 18:40:56,340 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 501 flow. Second operand 8 states and 154 transitions. [2024-06-27 18:40:56,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 106 transitions, 817 flow [2024-06-27 18:40:56,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 106 transitions, 749 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:56,348 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 500 flow [2024-06-27 18:40:56,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-06-27 18:40:56,350 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2024-06-27 18:40:56,350 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 500 flow [2024-06-27 18:40:56,350 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 18:40:56,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:56,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:56,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:40:56,351 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 18:40:56,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:56,351 INFO L85 PathProgramCache]: Analyzing trace with hash -846274926, now seen corresponding path program 2 times [2024-06-27 18:40:56,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:56,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586549384] [2024-06-27 18:40:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:56,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:56,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:56,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586549384] [2024-06-27 18:40:56,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586549384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:56,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:56,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:56,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097161897] [2024-06-27 18:40:56,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:56,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:56,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:56,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:56,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:40:56,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 500 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 18:40:56,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:56,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:40:56,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:57,171 INFO L124 PetriNetUnfolderBase]: 617/1208 cut-off events. [2024-06-27 18:40:57,171 INFO L125 PetriNetUnfolderBase]: For 5526/5526 co-relation queries the response was YES. [2024-06-27 18:40:57,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4427 conditions, 1208 events. 617/1208 cut-off events. For 5526/5526 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6963 event pairs, 137 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 4391. Up to 740 conditions per place. [2024-06-27 18:40:57,182 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 75 selfloop transitions, 29 changer transitions 0/113 dead transitions. [2024-06-27 18:40:57,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 886 flow [2024-06-27 18:40:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 18:40:57,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-27 18:40:57,183 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 500 flow. Second operand 8 states and 158 transitions. [2024-06-27 18:40:57,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 886 flow [2024-06-27 18:40:57,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 843 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:57,190 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 579 flow [2024-06-27 18:40:57,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=579, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-06-27 18:40:57,191 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-27 18:40:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 579 flow [2024-06-27 18:40:57,191 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 18:40:57,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:57,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:57,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:40:57,192 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 18:40:57,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash -846601356, now seen corresponding path program 3 times [2024-06-27 18:40:57,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:57,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060937029] [2024-06-27 18:40:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:57,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:57,747 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 18:40:57,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060937029] [2024-06-27 18:40:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060937029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:57,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:57,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469157248] [2024-06-27 18:40:57,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:57,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:57,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:57,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:40:57,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 579 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 18:40:57,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:57,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:40:57,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:58,085 INFO L124 PetriNetUnfolderBase]: 639/1242 cut-off events. [2024-06-27 18:40:58,086 INFO L125 PetriNetUnfolderBase]: For 6478/6478 co-relation queries the response was YES. [2024-06-27 18:40:58,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 1242 events. 639/1242 cut-off events. For 6478/6478 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7172 event pairs, 137 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 4822. Up to 758 conditions per place. [2024-06-27 18:40:58,093 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 77 selfloop transitions, 29 changer transitions 0/115 dead transitions. [2024-06-27 18:40:58,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 953 flow [2024-06-27 18:40:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 18:40:58,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-06-27 18:40:58,095 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 579 flow. Second operand 8 states and 159 transitions. [2024-06-27 18:40:58,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 953 flow [2024-06-27 18:40:58,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 904 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:58,104 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 619 flow [2024-06-27 18:40:58,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=619, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2024-06-27 18:40:58,105 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 49 predicate places. [2024-06-27 18:40:58,105 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 619 flow [2024-06-27 18:40:58,105 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 18:40:58,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:58,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:58,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:40:58,106 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 18:40:58,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash -855798126, now seen corresponding path program 4 times [2024-06-27 18:40:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:58,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581550303] [2024-06-27 18:40:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:58,649 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 18:40:58,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581550303] [2024-06-27 18:40:58,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581550303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:58,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:58,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:58,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106039139] [2024-06-27 18:40:58,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:58,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:58,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:40:58,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 619 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 18:40:58,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:58,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:40:58,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:58,965 INFO L124 PetriNetUnfolderBase]: 635/1260 cut-off events. [2024-06-27 18:40:58,965 INFO L125 PetriNetUnfolderBase]: For 6725/6725 co-relation queries the response was YES. [2024-06-27 18:40:58,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4956 conditions, 1260 events. 635/1260 cut-off events. For 6725/6725 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7411 event pairs, 163 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 4916. Up to 755 conditions per place. [2024-06-27 18:40:58,972 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 77 selfloop transitions, 29 changer transitions 0/115 dead transitions. [2024-06-27 18:40:58,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 115 transitions, 946 flow [2024-06-27 18:40:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 18:40:58,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-06-27 18:40:58,974 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 619 flow. Second operand 8 states and 159 transitions. [2024-06-27 18:40:58,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 115 transitions, 946 flow [2024-06-27 18:40:58,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 877 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:58,988 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 622 flow [2024-06-27 18:40:58,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=622, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-06-27 18:40:58,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-27 18:40:58,989 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 622 flow [2024-06-27 18:40:58,989 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 18:40:58,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:58,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:40:58,990 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 18:40:58,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash -846263022, now seen corresponding path program 1 times [2024-06-27 18:40:58,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:58,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484566066] [2024-06-27 18:40:58,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:58,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:59,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:59,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484566066] [2024-06-27 18:40:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484566066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:59,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523424327] [2024-06-27 18:40:59,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:59,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:59,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:59,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:59,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:40:59,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 622 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 18:40:59,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:59,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:40:59,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:00,026 INFO L124 PetriNetUnfolderBase]: 636/1259 cut-off events. [2024-06-27 18:41:00,027 INFO L125 PetriNetUnfolderBase]: For 6689/6689 co-relation queries the response was YES. [2024-06-27 18:41:00,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 1259 events. 636/1259 cut-off events. For 6689/6689 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7493 event pairs, 184 based on Foata normal form. 1/1216 useless extension candidates. Maximal degree in co-relation 4902. Up to 982 conditions per place. [2024-06-27 18:41:00,034 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 94 selfloop transitions, 15 changer transitions 0/118 dead transitions. [2024-06-27 18:41:00,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 960 flow [2024-06-27 18:41:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:41:00,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 18:41:00,035 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 622 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:41:00,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 960 flow [2024-06-27 18:41:00,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 118 transitions, 912 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:00,044 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 625 flow [2024-06-27 18:41:00,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=625, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2024-06-27 18:41:00,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-27 18:41:00,044 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 625 flow [2024-06-27 18:41:00,045 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 18:41:00,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:00,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:00,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:41:00,045 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 18:41:00,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:00,045 INFO L85 PathProgramCache]: Analyzing trace with hash 724257614, now seen corresponding path program 1 times [2024-06-27 18:41:00,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:00,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533217760] [2024-06-27 18:41:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:00,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:00,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:00,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533217760] [2024-06-27 18:41:00,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533217760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:00,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:00,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:00,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809746288] [2024-06-27 18:41:00,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:00,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:00,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:00,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:00,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:00,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:00,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 625 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 18:41:00,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:00,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:00,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:01,101 INFO L124 PetriNetUnfolderBase]: 637/1233 cut-off events. [2024-06-27 18:41:01,101 INFO L125 PetriNetUnfolderBase]: For 6909/6909 co-relation queries the response was YES. [2024-06-27 18:41:01,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 1233 events. 637/1233 cut-off events. For 6909/6909 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7271 event pairs, 201 based on Foata normal form. 1/1199 useless extension candidates. Maximal degree in co-relation 4865. Up to 963 conditions per place. [2024-06-27 18:41:01,108 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 84 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2024-06-27 18:41:01,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 116 transitions, 951 flow [2024-06-27 18:41:01,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:01,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 18:41:01,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032894736842105 [2024-06-27 18:41:01,110 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 625 flow. Second operand 8 states and 153 transitions. [2024-06-27 18:41:01,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 116 transitions, 951 flow [2024-06-27 18:41:01,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 116 transitions, 867 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 18:41:01,119 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 623 flow [2024-06-27 18:41:01,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=623, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2024-06-27 18:41:01,120 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2024-06-27 18:41:01,120 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 623 flow [2024-06-27 18:41:01,120 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 18:41:01,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:01,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:01,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:41:01,120 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 18:41:01,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1622989902, now seen corresponding path program 1 times [2024-06-27 18:41:01,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:01,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571738488] [2024-06-27 18:41:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:01,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:01,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571738488] [2024-06-27 18:41:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571738488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:01,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:01,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:01,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717086799] [2024-06-27 18:41:01,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:01,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:01,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:01,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:01,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:01,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:01,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 623 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 18:41:01,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:01,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:01,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:02,032 INFO L124 PetriNetUnfolderBase]: 659/1257 cut-off events. [2024-06-27 18:41:02,032 INFO L125 PetriNetUnfolderBase]: For 7568/7568 co-relation queries the response was YES. [2024-06-27 18:41:02,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4987 conditions, 1257 events. 659/1257 cut-off events. For 7568/7568 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7381 event pairs, 181 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 4945. Up to 946 conditions per place. [2024-06-27 18:41:02,038 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 98 selfloop transitions, 19 changer transitions 0/126 dead transitions. [2024-06-27 18:41:02,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 126 transitions, 1001 flow [2024-06-27 18:41:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:41:02,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-06-27 18:41:02,039 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 623 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:41:02,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 126 transitions, 1001 flow [2024-06-27 18:41:02,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 937 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:02,049 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 630 flow [2024-06-27 18:41:02,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=630, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-06-27 18:41:02,050 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-27 18:41:02,050 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 630 flow [2024-06-27 18:41:02,050 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 18:41:02,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:02,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:02,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:41:02,051 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 18:41:02,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:02,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1309639810, now seen corresponding path program 2 times [2024-06-27 18:41:02,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:02,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13920090] [2024-06-27 18:41:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:02,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13920090] [2024-06-27 18:41:02,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13920090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:02,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:02,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:02,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814072534] [2024-06-27 18:41:02,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:02,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:02,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:02,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:02,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 630 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 18:41:02,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:02,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:02,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:02,963 INFO L124 PetriNetUnfolderBase]: 723/1382 cut-off events. [2024-06-27 18:41:02,964 INFO L125 PetriNetUnfolderBase]: For 9822/9822 co-relation queries the response was YES. [2024-06-27 18:41:02,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 1382 events. 723/1382 cut-off events. For 9822/9822 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8123 event pairs, 136 based on Foata normal form. 2/1346 useless extension candidates. Maximal degree in co-relation 5603. Up to 757 conditions per place. [2024-06-27 18:41:02,970 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 88 selfloop transitions, 38 changer transitions 0/135 dead transitions. [2024-06-27 18:41:02,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 135 transitions, 1174 flow [2024-06-27 18:41:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-27 18:41:02,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:41:02,972 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 630 flow. Second operand 9 states and 180 transitions. [2024-06-27 18:41:02,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 135 transitions, 1174 flow [2024-06-27 18:41:02,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 135 transitions, 1119 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:02,985 INFO L231 Difference]: Finished difference. Result has 101 places, 97 transitions, 744 flow [2024-06-27 18:41:02,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=744, PETRI_PLACES=101, PETRI_TRANSITIONS=97} [2024-06-27 18:41:02,985 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-27 18:41:02,985 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 97 transitions, 744 flow [2024-06-27 18:41:02,985 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 18:41:02,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:02,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:02,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:41:02,986 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 18:41:02,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash -464361620, now seen corresponding path program 3 times [2024-06-27 18:41:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:02,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814836879] [2024-06-27 18:41:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:02,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:03,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:03,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814836879] [2024-06-27 18:41:03,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814836879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:03,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:03,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:03,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632620977] [2024-06-27 18:41:03,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:03,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:03,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:03,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:03,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:03,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:03,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 97 transitions, 744 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 18:41:03,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:03,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:03,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:04,000 INFO L124 PetriNetUnfolderBase]: 719/1395 cut-off events. [2024-06-27 18:41:04,000 INFO L125 PetriNetUnfolderBase]: For 10651/10651 co-relation queries the response was YES. [2024-06-27 18:41:04,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5807 conditions, 1395 events. 719/1395 cut-off events. For 10651/10651 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8498 event pairs, 210 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 5763. Up to 1100 conditions per place. [2024-06-27 18:41:04,007 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 105 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2024-06-27 18:41:04,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 129 transitions, 1096 flow [2024-06-27 18:41:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:41:04,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:41:04,013 INFO L175 Difference]: Start difference. First operand has 101 places, 97 transitions, 744 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:41:04,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 129 transitions, 1096 flow [2024-06-27 18:41:04,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 129 transitions, 1019 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:04,027 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 702 flow [2024-06-27 18:41:04,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=702, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2024-06-27 18:41:04,027 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-27 18:41:04,028 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 702 flow [2024-06-27 18:41:04,028 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 18:41:04,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:04,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:04,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:41:04,028 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 18:41:04,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:04,029 INFO L85 PathProgramCache]: Analyzing trace with hash -474837140, now seen corresponding path program 4 times [2024-06-27 18:41:04,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018954181] [2024-06-27 18:41:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:04,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:04,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:04,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018954181] [2024-06-27 18:41:04,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018954181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:04,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:04,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:04,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388907423] [2024-06-27 18:41:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:04,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:04,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:04,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 702 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 18:41:04,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:04,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:04,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:04,950 INFO L124 PetriNetUnfolderBase]: 741/1410 cut-off events. [2024-06-27 18:41:04,950 INFO L125 PetriNetUnfolderBase]: For 10523/10523 co-relation queries the response was YES. [2024-06-27 18:41:04,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5879 conditions, 1410 events. 741/1410 cut-off events. For 10523/10523 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8320 event pairs, 141 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 5833. Up to 772 conditions per place. [2024-06-27 18:41:04,976 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 89 selfloop transitions, 38 changer transitions 0/136 dead transitions. [2024-06-27 18:41:04,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 136 transitions, 1158 flow [2024-06-27 18:41:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-27 18:41:04,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:41:04,977 INFO L175 Difference]: Start difference. First operand has 106 places, 97 transitions, 702 flow. Second operand 9 states and 180 transitions. [2024-06-27 18:41:04,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 136 transitions, 1158 flow [2024-06-27 18:41:04,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 136 transitions, 1123 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:04,992 INFO L231 Difference]: Finished difference. Result has 107 places, 99 transitions, 778 flow [2024-06-27 18:41:04,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=778, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2024-06-27 18:41:04,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2024-06-27 18:41:04,993 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 778 flow [2024-06-27 18:41:04,993 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 18:41:04,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:04,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:04,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:41:04,994 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 18:41:04,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:04,994 INFO L85 PathProgramCache]: Analyzing trace with hash -759937010, now seen corresponding path program 5 times [2024-06-27 18:41:04,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:04,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218877311] [2024-06-27 18:41:04,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:04,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:05,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:05,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218877311] [2024-06-27 18:41:05,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218877311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:05,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:05,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:05,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974974051] [2024-06-27 18:41:05,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:05,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:05,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:05,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:05,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:05,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:05,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 778 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 18:41:05,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:05,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:05,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:05,966 INFO L124 PetriNetUnfolderBase]: 737/1440 cut-off events. [2024-06-27 18:41:05,966 INFO L125 PetriNetUnfolderBase]: For 11054/11054 co-relation queries the response was YES. [2024-06-27 18:41:05,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6046 conditions, 1440 events. 737/1440 cut-off events. For 11054/11054 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8690 event pairs, 185 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 5999. Up to 769 conditions per place. [2024-06-27 18:41:05,975 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 89 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-06-27 18:41:05,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 135 transitions, 1158 flow [2024-06-27 18:41:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-27 18:41:05,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:41:05,976 INFO L175 Difference]: Start difference. First operand has 107 places, 99 transitions, 778 flow. Second operand 9 states and 180 transitions. [2024-06-27 18:41:05,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 135 transitions, 1158 flow [2024-06-27 18:41:05,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 135 transitions, 1066 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:05,992 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 765 flow [2024-06-27 18:41:05,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=765, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2024-06-27 18:41:05,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-27 18:41:05,993 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 765 flow [2024-06-27 18:41:05,993 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 18:41:05,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:05,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:05,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:41:05,994 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 18:41:05,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1319839926, now seen corresponding path program 1 times [2024-06-27 18:41:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:05,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617373306] [2024-06-27 18:41:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:05,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:06,724 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 18:41:06,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:06,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617373306] [2024-06-27 18:41:06,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617373306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:06,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:06,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:06,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765676530] [2024-06-27 18:41:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:06,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:06,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:06,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:06,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:06,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:06,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 765 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 18:41:06,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:06,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:06,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:07,164 INFO L124 PetriNetUnfolderBase]: 738/1429 cut-off events. [2024-06-27 18:41:07,164 INFO L125 PetriNetUnfolderBase]: For 10690/10690 co-relation queries the response was YES. [2024-06-27 18:41:07,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5961 conditions, 1429 events. 738/1429 cut-off events. For 10690/10690 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8709 event pairs, 217 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 5913. Up to 1120 conditions per place. [2024-06-27 18:41:07,181 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 112 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2024-06-27 18:41:07,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 137 transitions, 1161 flow [2024-06-27 18:41:07,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:41:07,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 18:41:07,203 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 765 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:41:07,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 137 transitions, 1161 flow [2024-06-27 18:41:07,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 137 transitions, 1049 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:07,226 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 703 flow [2024-06-27 18:41:07,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=703, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2024-06-27 18:41:07,227 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2024-06-27 18:41:07,227 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 703 flow [2024-06-27 18:41:07,227 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 18:41:07,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:07,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:07,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:41:07,227 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:07,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1396121695, now seen corresponding path program 1 times [2024-06-27 18:41:07,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:07,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771380764] [2024-06-27 18:41:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:07,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771380764] [2024-06-27 18:41:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771380764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:07,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:07,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:41:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028191012] [2024-06-27 18:41:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:07,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:41:07,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:41:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:41:07,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-06-27 18:41:07,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 703 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 18:41:07,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:07,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-06-27 18:41:07,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:07,578 INFO L124 PetriNetUnfolderBase]: 934/1817 cut-off events. [2024-06-27 18:41:07,578 INFO L125 PetriNetUnfolderBase]: For 8921/8962 co-relation queries the response was YES. [2024-06-27 18:41:07,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6688 conditions, 1817 events. 934/1817 cut-off events. For 8921/8962 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11845 event pairs, 223 based on Foata normal form. 11/1738 useless extension candidates. Maximal degree in co-relation 6640. Up to 853 conditions per place. [2024-06-27 18:41:07,587 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 76 selfloop transitions, 13 changer transitions 64/201 dead transitions. [2024-06-27 18:41:07,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 201 transitions, 1604 flow [2024-06-27 18:41:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:41:07,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 18:41:07,588 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 703 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:41:07,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 201 transitions, 1604 flow [2024-06-27 18:41:07,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 201 transitions, 1548 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:07,602 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 797 flow [2024-06-27 18:41:07,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=797, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2024-06-27 18:41:07,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2024-06-27 18:41:07,603 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 797 flow [2024-06-27 18:41:07,603 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 18:41:07,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:07,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:07,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:41:07,603 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 18:41:07,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1546970255, now seen corresponding path program 1 times [2024-06-27 18:41:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:07,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391768493] [2024-06-27 18:41:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:08,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:08,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391768493] [2024-06-27 18:41:08,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391768493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:08,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:08,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:08,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590219217] [2024-06-27 18:41:08,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:08,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:08,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:08,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:08,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:08,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:41:08,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 797 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:08,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:08,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:41:08,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:08,752 INFO L124 PetriNetUnfolderBase]: 770/1530 cut-off events. [2024-06-27 18:41:08,752 INFO L125 PetriNetUnfolderBase]: For 13253/13265 co-relation queries the response was YES. [2024-06-27 18:41:08,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6894 conditions, 1530 events. 770/1530 cut-off events. For 13253/13265 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9569 event pairs, 159 based on Foata normal form. 14/1519 useless extension candidates. Maximal degree in co-relation 6840. Up to 1087 conditions per place. [2024-06-27 18:41:08,760 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 96 selfloop transitions, 20 changer transitions 2/138 dead transitions. [2024-06-27 18:41:08,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 138 transitions, 1137 flow [2024-06-27 18:41:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:08,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 18:41:08,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-06-27 18:41:08,764 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 797 flow. Second operand 8 states and 159 transitions. [2024-06-27 18:41:08,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 138 transitions, 1137 flow [2024-06-27 18:41:08,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 1129 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:08,782 INFO L231 Difference]: Finished difference. Result has 121 places, 109 transitions, 857 flow [2024-06-27 18:41:08,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=857, PETRI_PLACES=121, PETRI_TRANSITIONS=109} [2024-06-27 18:41:08,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-06-27 18:41:08,783 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 109 transitions, 857 flow [2024-06-27 18:41:08,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:08,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:08,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:08,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:41:08,783 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 18:41:08,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 977144691, now seen corresponding path program 2 times [2024-06-27 18:41:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:08,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545685196] [2024-06-27 18:41:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:09,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:09,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545685196] [2024-06-27 18:41:09,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545685196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:09,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:09,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:09,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848616484] [2024-06-27 18:41:09,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:09,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:09,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:09,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:09,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:09,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:41:09,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 109 transitions, 857 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:09,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:09,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:41:09,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:09,968 INFO L124 PetriNetUnfolderBase]: 776/1500 cut-off events. [2024-06-27 18:41:09,968 INFO L125 PetriNetUnfolderBase]: For 14316/14328 co-relation queries the response was YES. [2024-06-27 18:41:09,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6929 conditions, 1500 events. 776/1500 cut-off events. For 14316/14328 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9246 event pairs, 203 based on Foata normal form. 14/1487 useless extension candidates. Maximal degree in co-relation 6872. Up to 1107 conditions per place. [2024-06-27 18:41:09,978 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 96 selfloop transitions, 22 changer transitions 0/138 dead transitions. [2024-06-27 18:41:09,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 138 transitions, 1201 flow [2024-06-27 18:41:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-27 18:41:09,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:41:09,979 INFO L175 Difference]: Start difference. First operand has 121 places, 109 transitions, 857 flow. Second operand 8 states and 160 transitions. [2024-06-27 18:41:09,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 138 transitions, 1201 flow [2024-06-27 18:41:09,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 138 transitions, 1131 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:09,997 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 850 flow [2024-06-27 18:41:09,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=850, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-06-27 18:41:09,998 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-06-27 18:41:09,998 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 850 flow [2024-06-27 18:41:09,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:09,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:09,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:09,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:41:09,998 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 18:41:09,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:09,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1047428363, now seen corresponding path program 1 times [2024-06-27 18:41:09,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:09,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832420093] [2024-06-27 18:41:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:09,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832420093] [2024-06-27 18:41:10,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832420093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:10,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:10,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:10,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852318301] [2024-06-27 18:41:10,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:10,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:10,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:10,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:10,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 850 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 18:41:10,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:10,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:10,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:11,160 INFO L124 PetriNetUnfolderBase]: 813/1547 cut-off events. [2024-06-27 18:41:11,160 INFO L125 PetriNetUnfolderBase]: For 14087/14103 co-relation queries the response was YES. [2024-06-27 18:41:11,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7054 conditions, 1547 events. 813/1547 cut-off events. For 14087/14103 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9377 event pairs, 218 based on Foata normal form. 13/1542 useless extension candidates. Maximal degree in co-relation 6998. Up to 1225 conditions per place. [2024-06-27 18:41:11,169 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 109 selfloop transitions, 25 changer transitions 0/144 dead transitions. [2024-06-27 18:41:11,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 144 transitions, 1264 flow [2024-06-27 18:41:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:41:11,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:41:11,170 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 850 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:41:11,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 144 transitions, 1264 flow [2024-06-27 18:41:11,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 144 transitions, 1213 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:11,214 INFO L231 Difference]: Finished difference. Result has 124 places, 112 transitions, 888 flow [2024-06-27 18:41:11,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=124, PETRI_TRANSITIONS=112} [2024-06-27 18:41:11,215 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-06-27 18:41:11,215 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 112 transitions, 888 flow [2024-06-27 18:41:11,215 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 18:41:11,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:11,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:41:11,215 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 18:41:11,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash -4457751, now seen corresponding path program 3 times [2024-06-27 18:41:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527979618] [2024-06-27 18:41:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:11,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527979618] [2024-06-27 18:41:11,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527979618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:11,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:11,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:11,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592002132] [2024-06-27 18:41:11,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:11,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:11,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:11,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:41:11,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 112 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:11,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:11,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:41:11,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:12,311 INFO L124 PetriNetUnfolderBase]: 791/1534 cut-off events. [2024-06-27 18:41:12,312 INFO L125 PetriNetUnfolderBase]: For 15544/15558 co-relation queries the response was YES. [2024-06-27 18:41:12,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7030 conditions, 1534 events. 791/1534 cut-off events. For 15544/15558 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9509 event pairs, 199 based on Foata normal form. 16/1527 useless extension candidates. Maximal degree in co-relation 6973. Up to 1117 conditions per place. [2024-06-27 18:41:12,321 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 99 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2024-06-27 18:41:12,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 143 transitions, 1264 flow [2024-06-27 18:41:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-27 18:41:12,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:41:12,322 INFO L175 Difference]: Start difference. First operand has 124 places, 112 transitions, 888 flow. Second operand 8 states and 160 transitions. [2024-06-27 18:41:12,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 143 transitions, 1264 flow [2024-06-27 18:41:12,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 143 transitions, 1191 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:12,343 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 907 flow [2024-06-27 18:41:12,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=907, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2024-06-27 18:41:12,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-27 18:41:12,343 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 907 flow [2024-06-27 18:41:12,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:12,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:12,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:12,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:41:12,344 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 18:41:12,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash -730270219, now seen corresponding path program 1 times [2024-06-27 18:41:12,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:12,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511276648] [2024-06-27 18:41:12,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:12,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:13,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:13,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511276648] [2024-06-27 18:41:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511276648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:13,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:13,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:13,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674761617] [2024-06-27 18:41:13,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:13,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:13,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:13,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:13,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:13,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 907 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 18:41:13,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:13,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:13,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:13,627 INFO L124 PetriNetUnfolderBase]: 857/1637 cut-off events. [2024-06-27 18:41:13,628 INFO L125 PetriNetUnfolderBase]: For 16715/16731 co-relation queries the response was YES. [2024-06-27 18:41:13,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 1637 events. 857/1637 cut-off events. For 16715/16731 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10067 event pairs, 200 based on Foata normal form. 12/1632 useless extension candidates. Maximal degree in co-relation 7507. Up to 1230 conditions per place. [2024-06-27 18:41:13,638 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 123 selfloop transitions, 24 changer transitions 0/157 dead transitions. [2024-06-27 18:41:13,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 157 transitions, 1411 flow [2024-06-27 18:41:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:41:13,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-27 18:41:13,639 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 907 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:41:13,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 157 transitions, 1411 flow [2024-06-27 18:41:13,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 157 transitions, 1364 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:13,659 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 960 flow [2024-06-27 18:41:13,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=960, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2024-06-27 18:41:13,660 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-27 18:41:13,660 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 960 flow [2024-06-27 18:41:13,660 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 18:41:13,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:13,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:13,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:41:13,661 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 18:41:13,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash 164218275, now seen corresponding path program 4 times [2024-06-27 18:41:13,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:13,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910477893] [2024-06-27 18:41:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:13,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:14,272 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 18:41:14,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910477893] [2024-06-27 18:41:14,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910477893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:14,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:14,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687967268] [2024-06-27 18:41:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:14,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:14,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:41:14,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 960 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:14,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:14,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:41:14,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:14,739 INFO L124 PetriNetUnfolderBase]: 814/1558 cut-off events. [2024-06-27 18:41:14,739 INFO L125 PetriNetUnfolderBase]: For 17208/17231 co-relation queries the response was YES. [2024-06-27 18:41:14,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7456 conditions, 1558 events. 814/1558 cut-off events. For 17208/17231 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9602 event pairs, 168 based on Foata normal form. 25/1545 useless extension candidates. Maximal degree in co-relation 7396. Up to 1179 conditions per place. [2024-06-27 18:41:14,748 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 107 selfloop transitions, 20 changer transitions 0/147 dead transitions. [2024-06-27 18:41:14,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 147 transitions, 1348 flow [2024-06-27 18:41:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 18:41:14,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-27 18:41:14,750 INFO L175 Difference]: Start difference. First operand has 132 places, 118 transitions, 960 flow. Second operand 8 states and 158 transitions. [2024-06-27 18:41:14,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 147 transitions, 1348 flow [2024-06-27 18:41:14,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 147 transitions, 1276 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:14,777 INFO L231 Difference]: Finished difference. Result has 133 places, 121 transitions, 969 flow [2024-06-27 18:41:14,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=969, PETRI_PLACES=133, PETRI_TRANSITIONS=121} [2024-06-27 18:41:14,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2024-06-27 18:41:14,778 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 121 transitions, 969 flow [2024-06-27 18:41:14,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:14,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:14,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:14,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:41:14,779 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 18:41:14,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:14,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1687030919, now seen corresponding path program 2 times [2024-06-27 18:41:14,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:14,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986054548] [2024-06-27 18:41:14,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:14,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:15,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:15,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986054548] [2024-06-27 18:41:15,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986054548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:15,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:15,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:15,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717732221] [2024-06-27 18:41:15,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:15,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:15,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:15,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:15,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:15,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 121 transitions, 969 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 18:41:15,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:15,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:15,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:16,029 INFO L124 PetriNetUnfolderBase]: 867/1705 cut-off events. [2024-06-27 18:41:16,029 INFO L125 PetriNetUnfolderBase]: For 17639/17657 co-relation queries the response was YES. [2024-06-27 18:41:16,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 1705 events. 867/1705 cut-off events. For 17639/17657 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10682 event pairs, 173 based on Foata normal form. 20/1699 useless extension candidates. Maximal degree in co-relation 7765. Up to 930 conditions per place. [2024-06-27 18:41:16,040 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 115 selfloop transitions, 42 changer transitions 0/167 dead transitions. [2024-06-27 18:41:16,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 167 transitions, 1557 flow [2024-06-27 18:41:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 18:41:16,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-06-27 18:41:16,041 INFO L175 Difference]: Start difference. First operand has 133 places, 121 transitions, 969 flow. Second operand 10 states and 199 transitions. [2024-06-27 18:41:16,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 167 transitions, 1557 flow [2024-06-27 18:41:16,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 167 transitions, 1503 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:16,067 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 1057 flow [2024-06-27 18:41:16,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1057, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2024-06-27 18:41:16,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2024-06-27 18:41:16,067 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 1057 flow [2024-06-27 18:41:16,067 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 18:41:16,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:16,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:16,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:41:16,068 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 18:41:16,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1509921231, now seen corresponding path program 3 times [2024-06-27 18:41:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:16,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665542748] [2024-06-27 18:41:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:16,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:16,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665542748] [2024-06-27 18:41:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665542748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:16,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:16,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211374290] [2024-06-27 18:41:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:16,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:16,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:16,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 1057 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 18:41:16,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:16,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:16,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:17,345 INFO L124 PetriNetUnfolderBase]: 898/1732 cut-off events. [2024-06-27 18:41:17,345 INFO L125 PetriNetUnfolderBase]: For 20274/20294 co-relation queries the response was YES. [2024-06-27 18:41:17,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8496 conditions, 1732 events. 898/1732 cut-off events. For 20274/20294 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10718 event pairs, 189 based on Foata normal form. 18/1723 useless extension candidates. Maximal degree in co-relation 8433. Up to 1338 conditions per place. [2024-06-27 18:41:17,356 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 137 selfloop transitions, 20 changer transitions 0/167 dead transitions. [2024-06-27 18:41:17,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 167 transitions, 1601 flow [2024-06-27 18:41:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:41:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:41:17,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:41:17,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-27 18:41:17,357 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 1057 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:41:17,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 167 transitions, 1601 flow [2024-06-27 18:41:17,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 167 transitions, 1487 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:17,390 INFO L231 Difference]: Finished difference. Result has 141 places, 127 transitions, 1048 flow [2024-06-27 18:41:17,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1048, PETRI_PLACES=141, PETRI_TRANSITIONS=127} [2024-06-27 18:41:17,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-27 18:41:17,391 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 127 transitions, 1048 flow [2024-06-27 18:41:17,391 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 18:41:17,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:17,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:17,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:41:17,391 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 18:41:17,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:17,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1835048301, now seen corresponding path program 4 times [2024-06-27 18:41:17,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:17,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901851111] [2024-06-27 18:41:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:17,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:18,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901851111] [2024-06-27 18:41:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901851111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:18,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372533612] [2024-06-27 18:41:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:18,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:18,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:18,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:18,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:18,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 127 transitions, 1048 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 18:41:18,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:18,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:18,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:18,512 INFO L124 PetriNetUnfolderBase]: 917/1781 cut-off events. [2024-06-27 18:41:18,513 INFO L125 PetriNetUnfolderBase]: For 21666/21678 co-relation queries the response was YES. [2024-06-27 18:41:18,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8645 conditions, 1781 events. 917/1781 cut-off events. For 21666/21678 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11087 event pairs, 161 based on Foata normal form. 14/1762 useless extension candidates. Maximal degree in co-relation 8581. Up to 1005 conditions per place. [2024-06-27 18:41:18,525 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 118 selfloop transitions, 44 changer transitions 0/172 dead transitions. [2024-06-27 18:41:18,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 172 transitions, 1664 flow [2024-06-27 18:41:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 18:41:18,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2024-06-27 18:41:18,527 INFO L175 Difference]: Start difference. First operand has 141 places, 127 transitions, 1048 flow. Second operand 10 states and 198 transitions. [2024-06-27 18:41:18,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 172 transitions, 1664 flow [2024-06-27 18:41:18,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 172 transitions, 1589 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:18,560 INFO L231 Difference]: Finished difference. Result has 142 places, 130 transitions, 1131 flow [2024-06-27 18:41:18,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1131, PETRI_PLACES=142, PETRI_TRANSITIONS=130} [2024-06-27 18:41:18,562 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-06-27 18:41:18,562 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 130 transitions, 1131 flow [2024-06-27 18:41:18,563 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 18:41:18,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:18,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:18,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:41:18,563 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 18:41:18,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1354047973, now seen corresponding path program 5 times [2024-06-27 18:41:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:18,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918731841] [2024-06-27 18:41:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:18,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:19,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:19,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918731841] [2024-06-27 18:41:19,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918731841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:19,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:19,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:19,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647127398] [2024-06-27 18:41:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:19,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:19,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:19,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:19,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:19,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 130 transitions, 1131 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 18:41:19,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:19,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:19,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:19,809 INFO L124 PetriNetUnfolderBase]: 941/1804 cut-off events. [2024-06-27 18:41:19,810 INFO L125 PetriNetUnfolderBase]: For 24324/24336 co-relation queries the response was YES. [2024-06-27 18:41:19,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9192 conditions, 1804 events. 941/1804 cut-off events. For 24324/24336 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11226 event pairs, 156 based on Foata normal form. 14/1781 useless extension candidates. Maximal degree in co-relation 9127. Up to 1049 conditions per place. [2024-06-27 18:41:19,822 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 115 selfloop transitions, 48 changer transitions 0/173 dead transitions. [2024-06-27 18:41:19,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 173 transitions, 1735 flow [2024-06-27 18:41:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 18:41:19,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184210526315789 [2024-06-27 18:41:19,823 INFO L175 Difference]: Start difference. First operand has 142 places, 130 transitions, 1131 flow. Second operand 10 states and 197 transitions. [2024-06-27 18:41:19,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 173 transitions, 1735 flow [2024-06-27 18:41:19,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 173 transitions, 1605 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:19,883 INFO L231 Difference]: Finished difference. Result has 144 places, 133 transitions, 1173 flow [2024-06-27 18:41:19,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1173, PETRI_PLACES=144, PETRI_TRANSITIONS=133} [2024-06-27 18:41:19,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2024-06-27 18:41:19,883 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 133 transitions, 1173 flow [2024-06-27 18:41:19,883 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 18:41:19,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:19,884 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 18:41:19,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:41:19,884 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 18:41:19,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1959643313, now seen corresponding path program 1 times [2024-06-27 18:41:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:19,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142573198] [2024-06-27 18:41:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:19,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:20,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:20,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142573198] [2024-06-27 18:41:20,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142573198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:20,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:20,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376670045] [2024-06-27 18:41:20,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:20,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:20,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:20,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:20,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 1173 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 18:41:20,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:20,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:20,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:21,064 INFO L124 PetriNetUnfolderBase]: 972/1820 cut-off events. [2024-06-27 18:41:21,064 INFO L125 PetriNetUnfolderBase]: For 26533/26563 co-relation queries the response was YES. [2024-06-27 18:41:21,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9507 conditions, 1820 events. 972/1820 cut-off events. For 26533/26563 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11179 event pairs, 174 based on Foata normal form. 14/1803 useless extension candidates. Maximal degree in co-relation 9441. Up to 1436 conditions per place. [2024-06-27 18:41:21,076 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 136 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2024-06-27 18:41:21,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 167 transitions, 1611 flow [2024-06-27 18:41:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:41:21,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 18:41:21,077 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 1173 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:41:21,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 167 transitions, 1611 flow [2024-06-27 18:41:21,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 167 transitions, 1467 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:21,120 INFO L231 Difference]: Finished difference. Result has 145 places, 134 transitions, 1093 flow [2024-06-27 18:41:21,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1093, PETRI_PLACES=145, PETRI_TRANSITIONS=134} [2024-06-27 18:41:21,121 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-27 18:41:21,121 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 134 transitions, 1093 flow [2024-06-27 18:41:21,121 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 18:41:21,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:21,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:21,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:41:21,121 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 18:41:21,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash 226715407, now seen corresponding path program 2 times [2024-06-27 18:41:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525753855] [2024-06-27 18:41:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:21,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525753855] [2024-06-27 18:41:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525753855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:21,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:21,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243065788] [2024-06-27 18:41:21,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:21,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:21,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:21,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 1093 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 18:41:21,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:21,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:21,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:22,347 INFO L124 PetriNetUnfolderBase]: 1015/1887 cut-off events. [2024-06-27 18:41:22,347 INFO L125 PetriNetUnfolderBase]: For 28155/28191 co-relation queries the response was YES. [2024-06-27 18:41:22,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9668 conditions, 1887 events. 1015/1887 cut-off events. For 28155/28191 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11631 event pairs, 231 based on Foata normal form. 14/1863 useless extension candidates. Maximal degree in co-relation 9601. Up to 1472 conditions per place. [2024-06-27 18:41:22,360 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 137 selfloop transitions, 24 changer transitions 0/171 dead transitions. [2024-06-27 18:41:22,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 171 transitions, 1643 flow [2024-06-27 18:41:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:41:22,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 18:41:22,362 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 1093 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:41:22,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 171 transitions, 1643 flow [2024-06-27 18:41:22,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 171 transitions, 1595 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:22,409 INFO L231 Difference]: Finished difference. Result has 147 places, 136 transitions, 1135 flow [2024-06-27 18:41:22,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1135, PETRI_PLACES=147, PETRI_TRANSITIONS=136} [2024-06-27 18:41:22,410 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-27 18:41:22,410 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 136 transitions, 1135 flow [2024-06-27 18:41:22,410 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 18:41:22,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:22,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:22,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:41:22,410 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 18:41:22,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1889453291, now seen corresponding path program 3 times [2024-06-27 18:41:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:22,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135774427] [2024-06-27 18:41:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:22,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:23,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:23,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135774427] [2024-06-27 18:41:23,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135774427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:23,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:23,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:23,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180533108] [2024-06-27 18:41:23,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:23,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:23,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:23,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:23,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:23,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:23,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 136 transitions, 1135 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 18:41:23,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:23,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:23,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:23,665 INFO L124 PetriNetUnfolderBase]: 1012/1889 cut-off events. [2024-06-27 18:41:23,665 INFO L125 PetriNetUnfolderBase]: For 28110/28158 co-relation queries the response was YES. [2024-06-27 18:41:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9619 conditions, 1889 events. 1012/1889 cut-off events. For 28110/28158 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11677 event pairs, 240 based on Foata normal form. 18/1871 useless extension candidates. Maximal degree in co-relation 9551. Up to 1526 conditions per place. [2024-06-27 18:41:23,679 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 135 selfloop transitions, 24 changer transitions 0/169 dead transitions. [2024-06-27 18:41:23,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 169 transitions, 1571 flow [2024-06-27 18:41:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:41:23,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:41:23,680 INFO L175 Difference]: Start difference. First operand has 147 places, 136 transitions, 1135 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:41:23,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 169 transitions, 1571 flow [2024-06-27 18:41:23,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 169 transitions, 1524 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:23,726 INFO L231 Difference]: Finished difference. Result has 151 places, 136 transitions, 1140 flow [2024-06-27 18:41:23,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1140, PETRI_PLACES=151, PETRI_TRANSITIONS=136} [2024-06-27 18:41:23,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 109 predicate places. [2024-06-27 18:41:23,726 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 136 transitions, 1140 flow [2024-06-27 18:41:23,727 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 18:41:23,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:23,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:23,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:41:23,727 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 18:41:23,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1889460235, now seen corresponding path program 1 times [2024-06-27 18:41:23,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:23,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939063923] [2024-06-27 18:41:23,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:23,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:24,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:24,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939063923] [2024-06-27 18:41:24,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939063923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:24,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:24,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:24,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213718748] [2024-06-27 18:41:24,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:24,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:24,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:24,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:24,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:24,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:24,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 136 transitions, 1140 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 18:41:24,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:24,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:24,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:24,922 INFO L124 PetriNetUnfolderBase]: 1010/1892 cut-off events. [2024-06-27 18:41:24,922 INFO L125 PetriNetUnfolderBase]: For 26192/26234 co-relation queries the response was YES. [2024-06-27 18:41:24,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9519 conditions, 1892 events. 1010/1892 cut-off events. For 26192/26234 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11723 event pairs, 238 based on Foata normal form. 15/1876 useless extension candidates. Maximal degree in co-relation 9449. Up to 1523 conditions per place. [2024-06-27 18:41:24,935 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 138 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2024-06-27 18:41:24,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 175 transitions, 1652 flow [2024-06-27 18:41:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 18:41:24,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-27 18:41:24,936 INFO L175 Difference]: Start difference. First operand has 151 places, 136 transitions, 1140 flow. Second operand 10 states and 189 transitions. [2024-06-27 18:41:24,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 175 transitions, 1652 flow [2024-06-27 18:41:24,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 175 transitions, 1601 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:24,983 INFO L231 Difference]: Finished difference. Result has 153 places, 138 transitions, 1196 flow [2024-06-27 18:41:24,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1196, PETRI_PLACES=153, PETRI_TRANSITIONS=138} [2024-06-27 18:41:24,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-27 18:41:24,984 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 138 transitions, 1196 flow [2024-06-27 18:41:24,984 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 18:41:24,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:24,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:24,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:41:24,984 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 18:41:24,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1232378029, now seen corresponding path program 4 times [2024-06-27 18:41:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:24,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142932336] [2024-06-27 18:41:24,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:25,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:25,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142932336] [2024-06-27 18:41:25,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142932336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:25,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:25,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:25,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405116296] [2024-06-27 18:41:25,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:25,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:25,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:25,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:25,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:25,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:25,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 138 transitions, 1196 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 18:41:25,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:25,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:25,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:26,223 INFO L124 PetriNetUnfolderBase]: 1040/1939 cut-off events. [2024-06-27 18:41:26,223 INFO L125 PetriNetUnfolderBase]: For 28875/28921 co-relation queries the response was YES. [2024-06-27 18:41:26,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9961 conditions, 1939 events. 1040/1939 cut-off events. For 28875/28921 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12006 event pairs, 242 based on Foata normal form. 18/1917 useless extension candidates. Maximal degree in co-relation 9890. Up to 1574 conditions per place. [2024-06-27 18:41:26,238 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 142 selfloop transitions, 21 changer transitions 0/173 dead transitions. [2024-06-27 18:41:26,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 173 transitions, 1690 flow [2024-06-27 18:41:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:26,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:41:26,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 18:41:26,239 INFO L175 Difference]: Start difference. First operand has 153 places, 138 transitions, 1196 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:41:26,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 173 transitions, 1690 flow [2024-06-27 18:41:26,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 173 transitions, 1599 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:26,286 INFO L231 Difference]: Finished difference. Result has 155 places, 142 transitions, 1210 flow [2024-06-27 18:41:26,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1210, PETRI_PLACES=155, PETRI_TRANSITIONS=142} [2024-06-27 18:41:26,286 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2024-06-27 18:41:26,287 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 142 transitions, 1210 flow [2024-06-27 18:41:26,287 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 18:41:26,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:26,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:26,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:41:26,287 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 18:41:26,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1051530769, now seen corresponding path program 5 times [2024-06-27 18:41:26,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:26,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532417381] [2024-06-27 18:41:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:26,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:26,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532417381] [2024-06-27 18:41:26,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532417381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:26,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:26,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098983508] [2024-06-27 18:41:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:27,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:27,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 142 transitions, 1210 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 18:41:27,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:27,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:27,523 INFO L124 PetriNetUnfolderBase]: 1077/2007 cut-off events. [2024-06-27 18:41:27,523 INFO L125 PetriNetUnfolderBase]: For 32464/32510 co-relation queries the response was YES. [2024-06-27 18:41:27,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10479 conditions, 2007 events. 1077/2007 cut-off events. For 32464/32510 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12508 event pairs, 243 based on Foata normal form. 16/1978 useless extension candidates. Maximal degree in co-relation 10406. Up to 1501 conditions per place. [2024-06-27 18:41:27,537 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 138 selfloop transitions, 31 changer transitions 0/179 dead transitions. [2024-06-27 18:41:27,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 179 transitions, 1800 flow [2024-06-27 18:41:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:41:27,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2024-06-27 18:41:27,538 INFO L175 Difference]: Start difference. First operand has 155 places, 142 transitions, 1210 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:41:27,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 179 transitions, 1800 flow [2024-06-27 18:41:27,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 179 transitions, 1758 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:27,593 INFO L231 Difference]: Finished difference. Result has 160 places, 144 transitions, 1280 flow [2024-06-27 18:41:27,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1280, PETRI_PLACES=160, PETRI_TRANSITIONS=144} [2024-06-27 18:41:27,593 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-27 18:41:27,594 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 144 transitions, 1280 flow [2024-06-27 18:41:27,594 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 18:41:27,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:27,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:27,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:41:27,594 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 18:41:27,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:27,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1308749927, now seen corresponding path program 6 times [2024-06-27 18:41:27,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:27,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645843593] [2024-06-27 18:41:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:27,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:28,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:28,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645843593] [2024-06-27 18:41:28,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645843593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:28,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:28,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257451762] [2024-06-27 18:41:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:28,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:28,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:28,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:28,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:28,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:28,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 144 transitions, 1280 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 18:41:28,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:28,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:28,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:28,820 INFO L124 PetriNetUnfolderBase]: 1074/2012 cut-off events. [2024-06-27 18:41:28,821 INFO L125 PetriNetUnfolderBase]: For 32257/32315 co-relation queries the response was YES. [2024-06-27 18:41:28,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10440 conditions, 2012 events. 1074/2012 cut-off events. For 32257/32315 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12615 event pairs, 253 based on Foata normal form. 24/1998 useless extension candidates. Maximal degree in co-relation 10366. Up to 1571 conditions per place. [2024-06-27 18:41:28,834 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 136 selfloop transitions, 31 changer transitions 0/177 dead transitions. [2024-06-27 18:41:28,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 177 transitions, 1740 flow [2024-06-27 18:41:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:41:28,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-27 18:41:28,836 INFO L175 Difference]: Start difference. First operand has 160 places, 144 transitions, 1280 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:41:28,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 177 transitions, 1740 flow [2024-06-27 18:41:28,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 177 transitions, 1679 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:28,893 INFO L231 Difference]: Finished difference. Result has 164 places, 144 transitions, 1285 flow [2024-06-27 18:41:28,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1285, PETRI_PLACES=164, PETRI_TRANSITIONS=144} [2024-06-27 18:41:28,893 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-27 18:41:28,893 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 144 transitions, 1285 flow [2024-06-27 18:41:28,896 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 18:41:28,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:28,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:28,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:41:28,896 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 18:41:28,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:28,897 INFO L85 PathProgramCache]: Analyzing trace with hash -814863253, now seen corresponding path program 1 times [2024-06-27 18:41:28,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:28,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354762072] [2024-06-27 18:41:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:28,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:29,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:29,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354762072] [2024-06-27 18:41:29,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354762072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:29,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:29,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:29,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157256261] [2024-06-27 18:41:29,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:29,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:29,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:29,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:29,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:29,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:29,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 144 transitions, 1285 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 18:41:29,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:29,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:29,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:30,269 INFO L124 PetriNetUnfolderBase]: 1184/2215 cut-off events. [2024-06-27 18:41:30,269 INFO L125 PetriNetUnfolderBase]: For 42530/42575 co-relation queries the response was YES. [2024-06-27 18:41:30,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11479 conditions, 2215 events. 1184/2215 cut-off events. For 42530/42575 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14077 event pairs, 266 based on Foata normal form. 27/2200 useless extension candidates. Maximal degree in co-relation 11403. Up to 1551 conditions per place. [2024-06-27 18:41:30,285 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 156 selfloop transitions, 27 changer transitions 0/193 dead transitions. [2024-06-27 18:41:30,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 193 transitions, 1941 flow [2024-06-27 18:41:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:41:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:41:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:41:30,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-06-27 18:41:30,286 INFO L175 Difference]: Start difference. First operand has 164 places, 144 transitions, 1285 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:41:30,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 193 transitions, 1941 flow [2024-06-27 18:41:30,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 193 transitions, 1878 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:30,349 INFO L231 Difference]: Finished difference. Result has 168 places, 145 transitions, 1304 flow [2024-06-27 18:41:30,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1304, PETRI_PLACES=168, PETRI_TRANSITIONS=145} [2024-06-27 18:41:30,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-27 18:41:30,350 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 145 transitions, 1304 flow [2024-06-27 18:41:30,350 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 18:41:30,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:30,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:30,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:41:30,350 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 18:41:30,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:30,351 INFO L85 PathProgramCache]: Analyzing trace with hash -163578163, now seen corresponding path program 7 times [2024-06-27 18:41:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:30,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799411402] [2024-06-27 18:41:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:30,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799411402] [2024-06-27 18:41:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799411402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530217656] [2024-06-27 18:41:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:30,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:31,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:31,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 145 transitions, 1304 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 18:41:31,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:31,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:31,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:31,540 INFO L124 PetriNetUnfolderBase]: 1223/2294 cut-off events. [2024-06-27 18:41:31,541 INFO L125 PetriNetUnfolderBase]: For 36991/37009 co-relation queries the response was YES. [2024-06-27 18:41:31,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12044 conditions, 2294 events. 1223/2294 cut-off events. For 36991/37009 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14772 event pairs, 261 based on Foata normal form. 20/2251 useless extension candidates. Maximal degree in co-relation 11967. Up to 1812 conditions per place. [2024-06-27 18:41:31,559 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 140 selfloop transitions, 32 changer transitions 0/182 dead transitions. [2024-06-27 18:41:31,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 182 transitions, 1846 flow [2024-06-27 18:41:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:41:31,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 18:41:31,561 INFO L175 Difference]: Start difference. First operand has 168 places, 145 transitions, 1304 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:41:31,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 182 transitions, 1846 flow [2024-06-27 18:41:31,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 182 transitions, 1794 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:31,637 INFO L231 Difference]: Finished difference. Result has 169 places, 149 transitions, 1386 flow [2024-06-27 18:41:31,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1386, PETRI_PLACES=169, PETRI_TRANSITIONS=149} [2024-06-27 18:41:31,637 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-06-27 18:41:31,637 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 149 transitions, 1386 flow [2024-06-27 18:41:31,637 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 18:41:31,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:31,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:31,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:41:31,638 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 18:41:31,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:31,638 INFO L85 PathProgramCache]: Analyzing trace with hash -391479313, now seen corresponding path program 8 times [2024-06-27 18:41:31,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:31,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003488003] [2024-06-27 18:41:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:31,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:32,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:32,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003488003] [2024-06-27 18:41:32,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003488003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:32,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:32,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:32,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476651779] [2024-06-27 18:41:32,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:32,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:32,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:32,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:32,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:32,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:32,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 149 transitions, 1386 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 18:41:32,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:32,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:32,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:32,903 INFO L124 PetriNetUnfolderBase]: 1243/2334 cut-off events. [2024-06-27 18:41:32,903 INFO L125 PetriNetUnfolderBase]: For 39362/39379 co-relation queries the response was YES. [2024-06-27 18:41:32,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12429 conditions, 2334 events. 1243/2334 cut-off events. For 39362/39379 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15022 event pairs, 256 based on Foata normal form. 19/2288 useless extension candidates. Maximal degree in co-relation 12350. Up to 1844 conditions per place. [2024-06-27 18:41:32,921 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 139 selfloop transitions, 33 changer transitions 0/182 dead transitions. [2024-06-27 18:41:32,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 182 transitions, 1896 flow [2024-06-27 18:41:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:41:32,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-27 18:41:32,922 INFO L175 Difference]: Start difference. First operand has 169 places, 149 transitions, 1386 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:41:32,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 182 transitions, 1896 flow [2024-06-27 18:41:33,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 182 transitions, 1812 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:33,005 INFO L231 Difference]: Finished difference. Result has 173 places, 151 transitions, 1423 flow [2024-06-27 18:41:33,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1423, PETRI_PLACES=173, PETRI_TRANSITIONS=151} [2024-06-27 18:41:33,005 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 131 predicate places. [2024-06-27 18:41:33,005 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 151 transitions, 1423 flow [2024-06-27 18:41:33,006 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 18:41:33,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:33,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:33,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:41:33,006 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 18:41:33,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:33,006 INFO L85 PathProgramCache]: Analyzing trace with hash -391656943, now seen corresponding path program 9 times [2024-06-27 18:41:33,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:33,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423460129] [2024-06-27 18:41:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:33,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423460129] [2024-06-27 18:41:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423460129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:33,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:33,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:33,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440389405] [2024-06-27 18:41:33,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:33,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:33,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:33,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:33,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:33,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 151 transitions, 1423 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 18:41:33,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:33,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:33,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:34,346 INFO L124 PetriNetUnfolderBase]: 1271/2363 cut-off events. [2024-06-27 18:41:34,347 INFO L125 PetriNetUnfolderBase]: For 41389/41405 co-relation queries the response was YES. [2024-06-27 18:41:34,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12770 conditions, 2363 events. 1271/2363 cut-off events. For 41389/41405 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15122 event pairs, 251 based on Foata normal form. 16/2303 useless extension candidates. Maximal degree in co-relation 12689. Up to 1791 conditions per place. [2024-06-27 18:41:34,364 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 140 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-27 18:41:34,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 186 transitions, 2049 flow [2024-06-27 18:41:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:41:34,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 18:41:34,365 INFO L175 Difference]: Start difference. First operand has 173 places, 151 transitions, 1423 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:41:34,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 186 transitions, 2049 flow [2024-06-27 18:41:34,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 186 transitions, 1978 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:34,462 INFO L231 Difference]: Finished difference. Result has 178 places, 153 transitions, 1486 flow [2024-06-27 18:41:34,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=169, 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=1486, PETRI_PLACES=178, PETRI_TRANSITIONS=153} [2024-06-27 18:41:34,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2024-06-27 18:41:34,463 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 153 transitions, 1486 flow [2024-06-27 18:41:34,463 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 18:41:34,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:34,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:34,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:41:34,463 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 18:41:34,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash 688541943, now seen corresponding path program 10 times [2024-06-27 18:41:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363445861] [2024-06-27 18:41:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:34,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:35,086 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 18:41:35,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:35,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363445861] [2024-06-27 18:41:35,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363445861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:35,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:35,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:35,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780459937] [2024-06-27 18:41:35,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:35,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:35,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:35,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:35,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:35,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:35,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 153 transitions, 1486 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 18:41:35,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:35,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:35,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:35,640 INFO L124 PetriNetUnfolderBase]: 1268/2381 cut-off events. [2024-06-27 18:41:35,641 INFO L125 PetriNetUnfolderBase]: For 39661/39675 co-relation queries the response was YES. [2024-06-27 18:41:35,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12654 conditions, 2381 events. 1268/2381 cut-off events. For 39661/39675 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15395 event pairs, 267 based on Foata normal form. 16/2328 useless extension candidates. Maximal degree in co-relation 12572. Up to 1883 conditions per place. [2024-06-27 18:41:35,660 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 140 selfloop transitions, 34 changer transitions 0/184 dead transitions. [2024-06-27 18:41:35,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 184 transitions, 1960 flow [2024-06-27 18:41:35,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:41:35,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:41:35,661 INFO L175 Difference]: Start difference. First operand has 178 places, 153 transitions, 1486 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:41:35,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 184 transitions, 1960 flow [2024-06-27 18:41:35,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 184 transitions, 1884 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:35,767 INFO L231 Difference]: Finished difference. Result has 182 places, 153 transitions, 1482 flow [2024-06-27 18:41:35,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1482, PETRI_PLACES=182, PETRI_TRANSITIONS=153} [2024-06-27 18:41:35,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2024-06-27 18:41:35,768 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 153 transitions, 1482 flow [2024-06-27 18:41:35,768 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 18:41:35,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:35,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:35,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:41:35,768 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 18:41:35,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash -154989427, now seen corresponding path program 2 times [2024-06-27 18:41:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:35,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56698090] [2024-06-27 18:41:35,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56698090] [2024-06-27 18:41:36,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56698090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:36,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:36,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:36,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732423304] [2024-06-27 18:41:36,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:36,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:36,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:36,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 153 transitions, 1482 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 18:41:36,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:36,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:36,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:37,194 INFO L124 PetriNetUnfolderBase]: 1359/2617 cut-off events. [2024-06-27 18:41:37,194 INFO L125 PetriNetUnfolderBase]: For 51084/51102 co-relation queries the response was YES. [2024-06-27 18:41:37,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13538 conditions, 2617 events. 1359/2617 cut-off events. For 51084/51102 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17592 event pairs, 261 based on Foata normal form. 30/2593 useless extension candidates. Maximal degree in co-relation 13454. Up to 1530 conditions per place. [2024-06-27 18:41:37,219 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 148 selfloop transitions, 46 changer transitions 0/204 dead transitions. [2024-06-27 18:41:37,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 204 transitions, 2218 flow [2024-06-27 18:41:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:41:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:41:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-27 18:41:37,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287081339712919 [2024-06-27 18:41:37,220 INFO L175 Difference]: Start difference. First operand has 182 places, 153 transitions, 1482 flow. Second operand 11 states and 221 transitions. [2024-06-27 18:41:37,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 204 transitions, 2218 flow [2024-06-27 18:41:37,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 204 transitions, 2126 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:37,320 INFO L231 Difference]: Finished difference. Result has 184 places, 154 transitions, 1512 flow [2024-06-27 18:41:37,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1512, PETRI_PLACES=184, PETRI_TRANSITIONS=154} [2024-06-27 18:41:37,320 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 142 predicate places. [2024-06-27 18:41:37,320 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 154 transitions, 1512 flow [2024-06-27 18:41:37,321 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 18:41:37,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:37,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:37,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:41:37,321 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 18:41:37,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1051921301, now seen corresponding path program 3 times [2024-06-27 18:41:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:37,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233269385] [2024-06-27 18:41:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:37,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233269385] [2024-06-27 18:41:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233269385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499997218] [2024-06-27 18:41:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:38,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:38,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:38,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:38,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 154 transitions, 1512 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 18:41:38,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:38,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:38,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:38,732 INFO L124 PetriNetUnfolderBase]: 1465/2812 cut-off events. [2024-06-27 18:41:38,732 INFO L125 PetriNetUnfolderBase]: For 56694/56706 co-relation queries the response was YES. [2024-06-27 18:41:38,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14777 conditions, 2812 events. 1465/2812 cut-off events. For 56694/56706 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19247 event pairs, 287 based on Foata normal form. 24/2774 useless extension candidates. Maximal degree in co-relation 14693. Up to 1720 conditions per place. [2024-06-27 18:41:38,756 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 148 selfloop transitions, 47 changer transitions 0/205 dead transitions. [2024-06-27 18:41:38,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 205 transitions, 2260 flow [2024-06-27 18:41:38,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:41:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:41:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 18:41:38,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:41:38,758 INFO L175 Difference]: Start difference. First operand has 184 places, 154 transitions, 1512 flow. Second operand 11 states and 220 transitions. [2024-06-27 18:41:38,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 205 transitions, 2260 flow [2024-06-27 18:41:38,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 205 transitions, 2168 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:38,864 INFO L231 Difference]: Finished difference. Result has 186 places, 155 transitions, 1546 flow [2024-06-27 18:41:38,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1546, PETRI_PLACES=186, PETRI_TRANSITIONS=155} [2024-06-27 18:41:38,864 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-27 18:41:38,864 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 155 transitions, 1546 flow [2024-06-27 18:41:38,864 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 18:41:38,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:38,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:38,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:41:38,865 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 18:41:38,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash 82820237, now seen corresponding path program 4 times [2024-06-27 18:41:38,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:38,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280337630] [2024-06-27 18:41:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:39,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:39,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:39,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280337630] [2024-06-27 18:41:39,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280337630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:39,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:39,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424146678] [2024-06-27 18:41:39,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:39,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:39,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:39,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 155 transitions, 1546 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 18:41:39,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:39,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:39,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:40,352 INFO L124 PetriNetUnfolderBase]: 1563/3002 cut-off events. [2024-06-27 18:41:40,352 INFO L125 PetriNetUnfolderBase]: For 62551/62565 co-relation queries the response was YES. [2024-06-27 18:41:40,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15938 conditions, 3002 events. 1563/3002 cut-off events. For 62551/62565 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20867 event pairs, 323 based on Foata normal form. 26/2961 useless extension candidates. Maximal degree in co-relation 15853. Up to 1898 conditions per place. [2024-06-27 18:41:40,375 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 142 selfloop transitions, 53 changer transitions 0/205 dead transitions. [2024-06-27 18:41:40,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 205 transitions, 2278 flow [2024-06-27 18:41:40,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:41:40,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:41:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-27 18:41:40,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239234449760766 [2024-06-27 18:41:40,376 INFO L175 Difference]: Start difference. First operand has 186 places, 155 transitions, 1546 flow. Second operand 11 states and 219 transitions. [2024-06-27 18:41:40,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 205 transitions, 2278 flow [2024-06-27 18:41:40,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 205 transitions, 2182 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:40,496 INFO L231 Difference]: Finished difference. Result has 188 places, 156 transitions, 1590 flow [2024-06-27 18:41:40,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1590, PETRI_PLACES=188, PETRI_TRANSITIONS=156} [2024-06-27 18:41:40,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 146 predicate places. [2024-06-27 18:41:40,497 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 156 transitions, 1590 flow [2024-06-27 18:41:40,497 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 18:41:40,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:40,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:40,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:41:40,497 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 18:41:40,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:40,497 INFO L85 PathProgramCache]: Analyzing trace with hash 92651267, now seen corresponding path program 5 times [2024-06-27 18:41:40,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:40,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192833590] [2024-06-27 18:41:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:40,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:41,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:41,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192833590] [2024-06-27 18:41:41,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192833590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:41,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:41,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:41,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810919445] [2024-06-27 18:41:41,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:41,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:41,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:41,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:41,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:41,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 156 transitions, 1590 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 18:41:41,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:41,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:41,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:42,014 INFO L124 PetriNetUnfolderBase]: 1659/3166 cut-off events. [2024-06-27 18:41:42,014 INFO L125 PetriNetUnfolderBase]: For 69686/69710 co-relation queries the response was YES. [2024-06-27 18:41:42,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17203 conditions, 3166 events. 1659/3166 cut-off events. For 69686/69710 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22221 event pairs, 427 based on Foata normal form. 28/3129 useless extension candidates. Maximal degree in co-relation 17117. Up to 2528 conditions per place. [2024-06-27 18:41:42,043 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 175 selfloop transitions, 19 changer transitions 0/204 dead transitions. [2024-06-27 18:41:42,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 204 transitions, 2278 flow [2024-06-27 18:41:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:41:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:41:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:41:42,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-27 18:41:42,044 INFO L175 Difference]: Start difference. First operand has 188 places, 156 transitions, 1590 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:41:42,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 204 transitions, 2278 flow [2024-06-27 18:41:42,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 204 transitions, 2168 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:42,171 INFO L231 Difference]: Finished difference. Result has 191 places, 159 transitions, 1576 flow [2024-06-27 18:41:42,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1576, PETRI_PLACES=191, PETRI_TRANSITIONS=159} [2024-06-27 18:41:42,171 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2024-06-27 18:41:42,171 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 159 transitions, 1576 flow [2024-06-27 18:41:42,171 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 18:41:42,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:42,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:42,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:41:42,172 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 18:41:42,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 437498987, now seen corresponding path program 6 times [2024-06-27 18:41:42,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:42,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021927067] [2024-06-27 18:41:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:42,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:42,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:42,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021927067] [2024-06-27 18:41:42,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021927067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:42,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:42,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:42,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348895387] [2024-06-27 18:41:42,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:42,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:42,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:43,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:43,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 159 transitions, 1576 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 18:41:43,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:43,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:43,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:43,725 INFO L124 PetriNetUnfolderBase]: 1687/3201 cut-off events. [2024-06-27 18:41:43,725 INFO L125 PetriNetUnfolderBase]: For 62154/62178 co-relation queries the response was YES. [2024-06-27 18:41:43,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 3201 events. 1687/3201 cut-off events. For 62154/62178 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 22405 event pairs, 420 based on Foata normal form. 18/3145 useless extension candidates. Maximal degree in co-relation 17435. Up to 2475 conditions per place. [2024-06-27 18:41:43,755 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 178 selfloop transitions, 25 changer transitions 0/213 dead transitions. [2024-06-27 18:41:43,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 213 transitions, 2428 flow [2024-06-27 18:41:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:41:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:41:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-27 18:41:43,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:41:43,756 INFO L175 Difference]: Start difference. First operand has 191 places, 159 transitions, 1576 flow. Second operand 12 states and 228 transitions. [2024-06-27 18:41:43,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 213 transitions, 2428 flow [2024-06-27 18:41:43,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 213 transitions, 2388 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:43,908 INFO L231 Difference]: Finished difference. Result has 196 places, 161 transitions, 1662 flow [2024-06-27 18:41:43,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1662, PETRI_PLACES=196, PETRI_TRANSITIONS=161} [2024-06-27 18:41:43,909 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-27 18:41:43,909 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 161 transitions, 1662 flow [2024-06-27 18:41:43,909 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 18:41:43,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:43,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:43,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:41:43,909 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 18:41:43,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash 437083277, now seen corresponding path program 7 times [2024-06-27 18:41:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:43,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525739996] [2024-06-27 18:41:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:43,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:44,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:44,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525739996] [2024-06-27 18:41:44,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525739996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:44,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:44,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:44,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587131333] [2024-06-27 18:41:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:44,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:44,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:44,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:44,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:44,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:44,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 161 transitions, 1662 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 18:41:44,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:44,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:44,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:45,607 INFO L124 PetriNetUnfolderBase]: 1684/3208 cut-off events. [2024-06-27 18:41:45,607 INFO L125 PetriNetUnfolderBase]: For 63054/63078 co-relation queries the response was YES. [2024-06-27 18:41:45,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17684 conditions, 3208 events. 1684/3208 cut-off events. For 63054/63078 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 22565 event pairs, 428 based on Foata normal form. 18/3154 useless extension candidates. Maximal degree in co-relation 17594. Up to 2523 conditions per place. [2024-06-27 18:41:45,631 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 177 selfloop transitions, 24 changer transitions 0/211 dead transitions. [2024-06-27 18:41:45,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 211 transitions, 2350 flow [2024-06-27 18:41:45,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:41:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:41:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-27 18:41:45,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 18:41:45,632 INFO L175 Difference]: Start difference. First operand has 196 places, 161 transitions, 1662 flow. Second operand 12 states and 225 transitions. [2024-06-27 18:41:45,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 211 transitions, 2350 flow [2024-06-27 18:41:45,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 2278 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:45,784 INFO L231 Difference]: Finished difference. Result has 199 places, 161 transitions, 1646 flow [2024-06-27 18:41:45,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1646, PETRI_PLACES=199, PETRI_TRANSITIONS=161} [2024-06-27 18:41:45,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-06-27 18:41:45,785 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 161 transitions, 1646 flow [2024-06-27 18:41:45,785 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 18:41:45,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:45,785 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 18:41:45,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:41:45,785 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 18:41:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -579696752, now seen corresponding path program 1 times [2024-06-27 18:41:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:45,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476219654] [2024-06-27 18:41:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476219654] [2024-06-27 18:41:46,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476219654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:46,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:46,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289584515] [2024-06-27 18:41:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:46,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:46,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:46,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:46,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:46,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 161 transitions, 1646 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 18:41:46,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:46,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:46,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:47,199 INFO L124 PetriNetUnfolderBase]: 1658/3081 cut-off events. [2024-06-27 18:41:47,199 INFO L125 PetriNetUnfolderBase]: For 60986/61040 co-relation queries the response was YES. [2024-06-27 18:41:47,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17033 conditions, 3081 events. 1658/3081 cut-off events. For 60986/61040 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 21017 event pairs, 447 based on Foata normal form. 20/3010 useless extension candidates. Maximal degree in co-relation 16942. Up to 2601 conditions per place. [2024-06-27 18:41:47,225 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 169 selfloop transitions, 22 changer transitions 0/201 dead transitions. [2024-06-27 18:41:47,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 201 transitions, 2168 flow [2024-06-27 18:41:47,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:47,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:41:47,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-27 18:41:47,226 INFO L175 Difference]: Start difference. First operand has 199 places, 161 transitions, 1646 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:41:47,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 201 transitions, 2168 flow [2024-06-27 18:41:47,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 201 transitions, 2118 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:41:47,383 INFO L231 Difference]: Finished difference. Result has 198 places, 162 transitions, 1654 flow [2024-06-27 18:41:47,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1654, PETRI_PLACES=198, PETRI_TRANSITIONS=162} [2024-06-27 18:41:47,383 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-06-27 18:41:47,384 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 162 transitions, 1654 flow [2024-06-27 18:41:47,384 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 18:41:47,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:47,384 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 18:41:47,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:41:47,384 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 18:41:47,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2100526128, now seen corresponding path program 2 times [2024-06-27 18:41:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:47,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693530977] [2024-06-27 18:41:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:48,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:48,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:48,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693530977] [2024-06-27 18:41:48,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693530977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:48,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:48,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:48,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068033484] [2024-06-27 18:41:48,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:48,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:48,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:48,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:48,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:48,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:48,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 162 transitions, 1654 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 18:41:48,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:48,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:48,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:48,817 INFO L124 PetriNetUnfolderBase]: 1701/3174 cut-off events. [2024-06-27 18:41:48,817 INFO L125 PetriNetUnfolderBase]: For 64695/64747 co-relation queries the response was YES. [2024-06-27 18:41:48,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17478 conditions, 3174 events. 1701/3174 cut-off events. For 64695/64747 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 22095 event pairs, 502 based on Foata normal form. 16/3112 useless extension candidates. Maximal degree in co-relation 17386. Up to 2592 conditions per place. [2024-06-27 18:41:48,842 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 169 selfloop transitions, 26 changer transitions 0/205 dead transitions. [2024-06-27 18:41:48,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 205 transitions, 2316 flow [2024-06-27 18:41:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 18:41:48,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 18:41:48,844 INFO L175 Difference]: Start difference. First operand has 198 places, 162 transitions, 1654 flow. Second operand 10 states and 194 transitions. [2024-06-27 18:41:48,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 205 transitions, 2316 flow [2024-06-27 18:41:48,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 205 transitions, 2268 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:48,995 INFO L231 Difference]: Finished difference. Result has 200 places, 164 transitions, 1684 flow [2024-06-27 18:41:48,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1684, PETRI_PLACES=200, PETRI_TRANSITIONS=164} [2024-06-27 18:41:48,996 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 158 predicate places. [2024-06-27 18:41:48,996 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 164 transitions, 1684 flow [2024-06-27 18:41:48,996 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 18:41:48,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:48,996 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 18:41:48,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:41:48,996 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 18:41:48,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2094812208, now seen corresponding path program 3 times [2024-06-27 18:41:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954835979] [2024-06-27 18:41:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:48,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:49,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:49,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954835979] [2024-06-27 18:41:49,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954835979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:49,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:49,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:49,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988413835] [2024-06-27 18:41:49,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:49,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:49,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:49,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:49,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:49,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:49,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 164 transitions, 1684 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 18:41:49,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:49,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:49,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:50,536 INFO L124 PetriNetUnfolderBase]: 1716/3215 cut-off events. [2024-06-27 18:41:50,536 INFO L125 PetriNetUnfolderBase]: For 66112/66168 co-relation queries the response was YES. [2024-06-27 18:41:50,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17682 conditions, 3215 events. 1716/3215 cut-off events. For 66112/66168 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 22436 event pairs, 535 based on Foata normal form. 16/3159 useless extension candidates. Maximal degree in co-relation 17589. Up to 2748 conditions per place. [2024-06-27 18:41:50,564 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 167 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-27 18:41:50,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 203 transitions, 2222 flow [2024-06-27 18:41:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 18:41:50,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-27 18:41:50,566 INFO L175 Difference]: Start difference. First operand has 200 places, 164 transitions, 1684 flow. Second operand 10 states and 189 transitions. [2024-06-27 18:41:50,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 203 transitions, 2222 flow [2024-06-27 18:41:50,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 203 transitions, 2180 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:50,743 INFO L231 Difference]: Finished difference. Result has 204 places, 165 transitions, 1712 flow [2024-06-27 18:41:50,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1712, PETRI_PLACES=204, PETRI_TRANSITIONS=165} [2024-06-27 18:41:50,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-27 18:41:50,744 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 165 transitions, 1712 flow [2024-06-27 18:41:50,744 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 18:41:50,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:50,744 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 18:41:50,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:41:50,745 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 18:41:50,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2095019598, now seen corresponding path program 4 times [2024-06-27 18:41:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26140738] [2024-06-27 18:41:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26140738] [2024-06-27 18:41:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26140738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:51,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:51,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:51,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989683384] [2024-06-27 18:41:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:51,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:51,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:51,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:51,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 165 transitions, 1712 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 18:41:51,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:51,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:51,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:52,213 INFO L124 PetriNetUnfolderBase]: 1710/3197 cut-off events. [2024-06-27 18:41:52,214 INFO L125 PetriNetUnfolderBase]: For 63809/63865 co-relation queries the response was YES. [2024-06-27 18:41:52,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17564 conditions, 3197 events. 1710/3197 cut-off events. For 63809/63865 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 22281 event pairs, 519 based on Foata normal form. 16/3137 useless extension candidates. Maximal degree in co-relation 17469. Up to 2686 conditions per place. [2024-06-27 18:41:52,244 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 167 selfloop transitions, 27 changer transitions 0/204 dead transitions. [2024-06-27 18:41:52,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 204 transitions, 2242 flow [2024-06-27 18:41:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:41:52,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-06-27 18:41:52,245 INFO L175 Difference]: Start difference. First operand has 204 places, 165 transitions, 1712 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:41:52,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 204 transitions, 2242 flow [2024-06-27 18:41:52,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 204 transitions, 2180 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:52,429 INFO L231 Difference]: Finished difference. Result has 206 places, 165 transitions, 1708 flow [2024-06-27 18:41:52,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1708, PETRI_PLACES=206, PETRI_TRANSITIONS=165} [2024-06-27 18:41:52,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-27 18:41:52,430 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 165 transitions, 1708 flow [2024-06-27 18:41:52,430 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 18:41:52,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:52,430 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 18:41:52,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:41:52,430 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 18:41:52,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:52,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2094804272, now seen corresponding path program 1 times [2024-06-27 18:41:52,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:52,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026126302] [2024-06-27 18:41:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:52,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:53,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:53,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026126302] [2024-06-27 18:41:53,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026126302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:53,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:53,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:53,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123334376] [2024-06-27 18:41:53,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:53,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:53,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:53,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:53,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:53,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:53,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 165 transitions, 1708 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 18:41:53,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:53,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:53,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:54,143 INFO L124 PetriNetUnfolderBase]: 1735/3267 cut-off events. [2024-06-27 18:41:54,144 INFO L125 PetriNetUnfolderBase]: For 65232/65288 co-relation queries the response was YES. [2024-06-27 18:41:54,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17997 conditions, 3267 events. 1735/3267 cut-off events. For 65232/65288 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23039 event pairs, 538 based on Foata normal form. 15/3207 useless extension candidates. Maximal degree in co-relation 17901. Up to 2758 conditions per place. [2024-06-27 18:41:54,171 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 171 selfloop transitions, 39 changer transitions 0/220 dead transitions. [2024-06-27 18:41:54,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 220 transitions, 2580 flow [2024-06-27 18:41:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:41:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:41:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-27 18:41:54,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48464912280701755 [2024-06-27 18:41:54,174 INFO L175 Difference]: Start difference. First operand has 206 places, 165 transitions, 1708 flow. Second operand 12 states and 221 transitions. [2024-06-27 18:41:54,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 220 transitions, 2580 flow [2024-06-27 18:41:54,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 220 transitions, 2519 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:54,355 INFO L231 Difference]: Finished difference. Result has 214 places, 177 transitions, 2067 flow [2024-06-27 18:41:54,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2067, PETRI_PLACES=214, PETRI_TRANSITIONS=177} [2024-06-27 18:41:54,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-06-27 18:41:54,356 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 177 transitions, 2067 flow [2024-06-27 18:41:54,356 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 18:41:54,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:54,356 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 18:41:54,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:41:54,357 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:54,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash -995118298, now seen corresponding path program 5 times [2024-06-27 18:41:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:54,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847476816] [2024-06-27 18:41:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847476816] [2024-06-27 18:41:55,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847476816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:55,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:55,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:55,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515275482] [2024-06-27 18:41:55,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:55,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:55,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:55,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:55,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:55,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:55,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 177 transitions, 2067 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 18:41:55,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:55,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:55,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:55,851 INFO L124 PetriNetUnfolderBase]: 1762/3326 cut-off events. [2024-06-27 18:41:55,851 INFO L125 PetriNetUnfolderBase]: For 73515/73572 co-relation queries the response was YES. [2024-06-27 18:41:55,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18752 conditions, 3326 events. 1762/3326 cut-off events. For 73515/73572 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 23675 event pairs, 543 based on Foata normal form. 17/3269 useless extension candidates. Maximal degree in co-relation 18650. Up to 2661 conditions per place. [2024-06-27 18:41:55,882 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 178 selfloop transitions, 35 changer transitions 0/223 dead transitions. [2024-06-27 18:41:55,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 223 transitions, 2841 flow [2024-06-27 18:41:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 18:41:55,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-27 18:41:55,884 INFO L175 Difference]: Start difference. First operand has 214 places, 177 transitions, 2067 flow. Second operand 10 states and 196 transitions. [2024-06-27 18:41:55,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 223 transitions, 2841 flow [2024-06-27 18:41:56,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 223 transitions, 2590 flow, removed 115 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:56,133 INFO L231 Difference]: Finished difference. Result has 221 places, 183 transitions, 1989 flow [2024-06-27 18:41:56,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1989, PETRI_PLACES=221, PETRI_TRANSITIONS=183} [2024-06-27 18:41:56,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-27 18:41:56,133 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 183 transitions, 1989 flow [2024-06-27 18:41:56,134 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 18:41:56,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:56,134 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 18:41:56,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:41:56,134 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 18:41:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash -989548528, now seen corresponding path program 6 times [2024-06-27 18:41:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397289520] [2024-06-27 18:41:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:56,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:56,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:56,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397289520] [2024-06-27 18:41:56,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397289520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:56,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:56,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380315172] [2024-06-27 18:41:56,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:56,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:56,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:56,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:56,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 183 transitions, 1989 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 18:41:56,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:56,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:56,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:57,758 INFO L124 PetriNetUnfolderBase]: 1762/3335 cut-off events. [2024-06-27 18:41:57,758 INFO L125 PetriNetUnfolderBase]: For 71702/71760 co-relation queries the response was YES. [2024-06-27 18:41:57,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18664 conditions, 3335 events. 1762/3335 cut-off events. For 71702/71760 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 23761 event pairs, 553 based on Foata normal form. 18/3283 useless extension candidates. Maximal degree in co-relation 18559. Up to 2716 conditions per place. [2024-06-27 18:41:57,789 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 177 selfloop transitions, 34 changer transitions 0/221 dead transitions. [2024-06-27 18:41:57,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 221 transitions, 2559 flow [2024-06-27 18:41:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:57,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:41:57,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-27 18:41:57,790 INFO L175 Difference]: Start difference. First operand has 221 places, 183 transitions, 1989 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:41:57,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 221 transitions, 2559 flow [2024-06-27 18:41:58,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 221 transitions, 2492 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:58,070 INFO L231 Difference]: Finished difference. Result has 228 places, 183 transitions, 1994 flow [2024-06-27 18:41:58,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1994, PETRI_PLACES=228, PETRI_TRANSITIONS=183} [2024-06-27 18:41:58,070 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 186 predicate places. [2024-06-27 18:41:58,070 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 183 transitions, 1994 flow [2024-06-27 18:41:58,071 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 18:41:58,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:58,071 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 18:41:58,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:41:58,071 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 18:41:58,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2115986924, now seen corresponding path program 7 times [2024-06-27 18:41:58,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:58,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512970107] [2024-06-27 18:41:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:58,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:58,757 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 18:41:58,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512970107] [2024-06-27 18:41:58,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512970107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:58,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:58,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443948437] [2024-06-27 18:41:58,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:58,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:58,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:58,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:41:58,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 183 transitions, 1994 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 18:41:58,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:58,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:41:58,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:59,562 INFO L124 PetriNetUnfolderBase]: 1798/3382 cut-off events. [2024-06-27 18:41:59,562 INFO L125 PetriNetUnfolderBase]: For 75394/75448 co-relation queries the response was YES. [2024-06-27 18:41:59,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19038 conditions, 3382 events. 1798/3382 cut-off events. For 75394/75448 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 24098 event pairs, 537 based on Foata normal form. 16/3317 useless extension candidates. Maximal degree in co-relation 18931. Up to 2579 conditions per place. [2024-06-27 18:41:59,594 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 179 selfloop transitions, 37 changer transitions 0/226 dead transitions. [2024-06-27 18:41:59,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 226 transitions, 2730 flow [2024-06-27 18:41:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 18:41:59,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-27 18:41:59,595 INFO L175 Difference]: Start difference. First operand has 228 places, 183 transitions, 1994 flow. Second operand 10 states and 196 transitions. [2024-06-27 18:41:59,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 226 transitions, 2730 flow [2024-06-27 18:41:59,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 226 transitions, 2659 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:59,827 INFO L231 Difference]: Finished difference. Result has 229 places, 185 transitions, 2035 flow [2024-06-27 18:41:59,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2035, PETRI_PLACES=229, PETRI_TRANSITIONS=185} [2024-06-27 18:41:59,827 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-27 18:41:59,827 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 185 transitions, 2035 flow [2024-06-27 18:41:59,828 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 18:41:59,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:59,828 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 18:41:59,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:41:59,828 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 18:41:59,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash -788459278, now seen corresponding path program 8 times [2024-06-27 18:41:59,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:59,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445971526] [2024-06-27 18:41:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:59,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:00,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:00,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445971526] [2024-06-27 18:42:00,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445971526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:00,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:00,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:00,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582939209] [2024-06-27 18:42:00,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:00,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:00,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:00,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:00,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:00,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 185 transitions, 2035 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 18:42:00,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:00,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:00,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:01,357 INFO L124 PetriNetUnfolderBase]: 1821/3452 cut-off events. [2024-06-27 18:42:01,358 INFO L125 PetriNetUnfolderBase]: For 77243/77309 co-relation queries the response was YES. [2024-06-27 18:42:01,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19408 conditions, 3452 events. 1821/3452 cut-off events. For 77243/77309 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 24792 event pairs, 577 based on Foata normal form. 22/3399 useless extension candidates. Maximal degree in co-relation 19300. Up to 2882 conditions per place. [2024-06-27 18:42:01,392 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 187 selfloop transitions, 28 changer transitions 0/225 dead transitions. [2024-06-27 18:42:01,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 225 transitions, 2648 flow [2024-06-27 18:42:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:42:01,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:42:01,393 INFO L175 Difference]: Start difference. First operand has 229 places, 185 transitions, 2035 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:42:01,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 225 transitions, 2648 flow [2024-06-27 18:42:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 225 transitions, 2576 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:01,605 INFO L231 Difference]: Finished difference. Result has 233 places, 188 transitions, 2064 flow [2024-06-27 18:42:01,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2064, PETRI_PLACES=233, PETRI_TRANSITIONS=188} [2024-06-27 18:42:01,606 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 191 predicate places. [2024-06-27 18:42:01,606 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 188 transitions, 2064 flow [2024-06-27 18:42:01,606 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 18:42:01,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:01,606 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 18:42:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:42:01,607 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 18:42:01,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1780419826, now seen corresponding path program 9 times [2024-06-27 18:42:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021731444] [2024-06-27 18:42:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:02,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:02,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021731444] [2024-06-27 18:42:02,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021731444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:02,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:02,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499118521] [2024-06-27 18:42:02,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:02,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:02,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 188 transitions, 2064 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 18:42:02,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:02,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:02,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:03,214 INFO L124 PetriNetUnfolderBase]: 1843/3497 cut-off events. [2024-06-27 18:42:03,214 INFO L125 PetriNetUnfolderBase]: For 77296/77354 co-relation queries the response was YES. [2024-06-27 18:42:03,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19553 conditions, 3497 events. 1843/3497 cut-off events. For 77296/77354 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 25228 event pairs, 580 based on Foata normal form. 18/3445 useless extension candidates. Maximal degree in co-relation 19443. Up to 2848 conditions per place. [2024-06-27 18:42:03,248 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 179 selfloop transitions, 38 changer transitions 0/227 dead transitions. [2024-06-27 18:42:03,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 227 transitions, 2660 flow [2024-06-27 18:42:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:42:03,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-27 18:42:03,249 INFO L175 Difference]: Start difference. First operand has 233 places, 188 transitions, 2064 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:42:03,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 227 transitions, 2660 flow [2024-06-27 18:42:03,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 227 transitions, 2600 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:03,520 INFO L231 Difference]: Finished difference. Result has 236 places, 189 transitions, 2100 flow [2024-06-27 18:42:03,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2100, PETRI_PLACES=236, PETRI_TRANSITIONS=189} [2024-06-27 18:42:03,521 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-27 18:42:03,521 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 189 transitions, 2100 flow [2024-06-27 18:42:03,521 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 18:42:03,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:03,521 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 18:42:03,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:42:03,522 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 18:42:03,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:03,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1780212436, now seen corresponding path program 10 times [2024-06-27 18:42:03,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:03,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674786477] [2024-06-27 18:42:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:03,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:04,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:04,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674786477] [2024-06-27 18:42:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674786477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:04,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:04,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034377063] [2024-06-27 18:42:04,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:04,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:04,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:04,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:04,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:04,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:04,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 189 transitions, 2100 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 18:42:04,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:04,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:04,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:05,153 INFO L124 PetriNetUnfolderBase]: 1837/3482 cut-off events. [2024-06-27 18:42:05,153 INFO L125 PetriNetUnfolderBase]: For 74671/74728 co-relation queries the response was YES. [2024-06-27 18:42:05,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19426 conditions, 3482 events. 1837/3482 cut-off events. For 74671/74728 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25092 event pairs, 567 based on Foata normal form. 17/3425 useless extension candidates. Maximal degree in co-relation 19315. Up to 2764 conditions per place. [2024-06-27 18:42:05,190 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 178 selfloop transitions, 40 changer transitions 0/228 dead transitions. [2024-06-27 18:42:05,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 228 transitions, 2686 flow [2024-06-27 18:42:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:42:05,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-27 18:42:05,191 INFO L175 Difference]: Start difference. First operand has 236 places, 189 transitions, 2100 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:42:05,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 228 transitions, 2686 flow [2024-06-27 18:42:05,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 228 transitions, 2602 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:05,451 INFO L231 Difference]: Finished difference. Result has 239 places, 189 transitions, 2100 flow [2024-06-27 18:42:05,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2100, PETRI_PLACES=239, PETRI_TRANSITIONS=189} [2024-06-27 18:42:05,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-27 18:42:05,452 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 189 transitions, 2100 flow [2024-06-27 18:42:05,452 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 18:42:05,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:05,452 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 18:42:05,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:42:05,452 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 18:42:05,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:05,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2046451472, now seen corresponding path program 2 times [2024-06-27 18:42:05,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:05,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881930079] [2024-06-27 18:42:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:05,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:06,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:06,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881930079] [2024-06-27 18:42:06,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881930079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:06,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:06,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:06,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778364488] [2024-06-27 18:42:06,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:06,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:06,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:06,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:06,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:06,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:06,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 189 transitions, 2100 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 18:42:06,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:06,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:06,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:07,081 INFO L124 PetriNetUnfolderBase]: 1888/3633 cut-off events. [2024-06-27 18:42:07,081 INFO L125 PetriNetUnfolderBase]: For 79614/79679 co-relation queries the response was YES. [2024-06-27 18:42:07,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20499 conditions, 3633 events. 1888/3633 cut-off events. For 79614/79679 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 26673 event pairs, 572 based on Foata normal form. 26/3587 useless extension candidates. Maximal degree in co-relation 20387. Up to 2770 conditions per place. [2024-06-27 18:42:07,115 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 169 selfloop transitions, 71 changer transitions 0/250 dead transitions. [2024-06-27 18:42:07,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 250 transitions, 3250 flow [2024-06-27 18:42:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:07,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:42:07,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507177033492823 [2024-06-27 18:42:07,116 INFO L175 Difference]: Start difference. First operand has 239 places, 189 transitions, 2100 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:42:07,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 250 transitions, 3250 flow [2024-06-27 18:42:07,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 250 transitions, 3130 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:42:07,369 INFO L231 Difference]: Finished difference. Result has 245 places, 203 transitions, 2625 flow [2024-06-27 18:42:07,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2625, PETRI_PLACES=245, PETRI_TRANSITIONS=203} [2024-06-27 18:42:07,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-27 18:42:07,370 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 203 transitions, 2625 flow [2024-06-27 18:42:07,370 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 18:42:07,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:07,370 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 18:42:07,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:42:07,370 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 18:42:07,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:07,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1018847448, now seen corresponding path program 11 times [2024-06-27 18:42:07,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:07,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224162147] [2024-06-27 18:42:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:08,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:08,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224162147] [2024-06-27 18:42:08,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224162147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:08,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:08,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:08,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182398776] [2024-06-27 18:42:08,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:08,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:08,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:08,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:08,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 203 transitions, 2625 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 18:42:08,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:08,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:08,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:08,927 INFO L124 PetriNetUnfolderBase]: 1960/3861 cut-off events. [2024-06-27 18:42:08,927 INFO L125 PetriNetUnfolderBase]: For 89062/89087 co-relation queries the response was YES. [2024-06-27 18:42:08,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21977 conditions, 3861 events. 1960/3861 cut-off events. For 89062/89087 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 29127 event pairs, 467 based on Foata normal form. 25/3821 useless extension candidates. Maximal degree in co-relation 21860. Up to 2919 conditions per place. [2024-06-27 18:42:08,966 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 192 selfloop transitions, 43 changer transitions 0/245 dead transitions. [2024-06-27 18:42:08,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 245 transitions, 3354 flow [2024-06-27 18:42:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 18:42:08,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-27 18:42:08,967 INFO L175 Difference]: Start difference. First operand has 245 places, 203 transitions, 2625 flow. Second operand 10 states and 195 transitions. [2024-06-27 18:42:08,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 245 transitions, 3354 flow [2024-06-27 18:42:09,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 245 transitions, 3082 flow, removed 126 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:09,335 INFO L231 Difference]: Finished difference. Result has 253 places, 207 transitions, 2522 flow [2024-06-27 18:42:09,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2522, PETRI_PLACES=253, PETRI_TRANSITIONS=207} [2024-06-27 18:42:09,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-27 18:42:09,336 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 207 transitions, 2522 flow [2024-06-27 18:42:09,336 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 18:42:09,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:09,336 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 18:42:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:42:09,336 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 18:42:09,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash 762346938, now seen corresponding path program 12 times [2024-06-27 18:42:09,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:09,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723041175] [2024-06-27 18:42:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:09,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:10,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723041175] [2024-06-27 18:42:10,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723041175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:10,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:10,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:10,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252422716] [2024-06-27 18:42:10,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:10,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:10,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:10,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:10,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:10,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 207 transitions, 2522 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 18:42:10,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:10,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:10,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:11,042 INFO L124 PetriNetUnfolderBase]: 1987/3897 cut-off events. [2024-06-27 18:42:11,043 INFO L125 PetriNetUnfolderBase]: For 85964/86003 co-relation queries the response was YES. [2024-06-27 18:42:11,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21908 conditions, 3897 events. 1987/3897 cut-off events. For 85964/86003 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29372 event pairs, 463 based on Foata normal form. 33/3858 useless extension candidates. Maximal degree in co-relation 21788. Up to 2891 conditions per place. [2024-06-27 18:42:11,084 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 185 selfloop transitions, 53 changer transitions 0/248 dead transitions. [2024-06-27 18:42:11,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 248 transitions, 3227 flow [2024-06-27 18:42:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 18:42:11,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184210526315789 [2024-06-27 18:42:11,085 INFO L175 Difference]: Start difference. First operand has 253 places, 207 transitions, 2522 flow. Second operand 10 states and 197 transitions. [2024-06-27 18:42:11,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 248 transitions, 3227 flow [2024-06-27 18:42:11,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 248 transitions, 3097 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:11,385 INFO L231 Difference]: Finished difference. Result has 256 places, 210 transitions, 2541 flow [2024-06-27 18:42:11,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2541, PETRI_PLACES=256, PETRI_TRANSITIONS=210} [2024-06-27 18:42:11,386 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-06-27 18:42:11,386 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 210 transitions, 2541 flow [2024-06-27 18:42:11,386 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 18:42:11,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:11,386 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 18:42:11,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:42:11,386 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 18:42:11,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:11,387 INFO L85 PathProgramCache]: Analyzing trace with hash -775954668, now seen corresponding path program 13 times [2024-06-27 18:42:11,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:11,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634229402] [2024-06-27 18:42:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:11,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:12,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:12,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634229402] [2024-06-27 18:42:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634229402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:12,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:12,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111399552] [2024-06-27 18:42:12,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:12,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:12,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 210 transitions, 2541 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 18:42:12,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:12,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:12,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:12,918 INFO L124 PetriNetUnfolderBase]: 2003/3938 cut-off events. [2024-06-27 18:42:12,918 INFO L125 PetriNetUnfolderBase]: For 85951/85978 co-relation queries the response was YES. [2024-06-27 18:42:12,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21995 conditions, 3938 events. 2003/3938 cut-off events. For 85951/85978 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29770 event pairs, 473 based on Foata normal form. 27/3898 useless extension candidates. Maximal degree in co-relation 21874. Up to 2911 conditions per place. [2024-06-27 18:42:12,963 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 194 selfloop transitions, 46 changer transitions 0/250 dead transitions. [2024-06-27 18:42:12,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 250 transitions, 3235 flow [2024-06-27 18:42:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 18:42:12,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184210526315789 [2024-06-27 18:42:12,964 INFO L175 Difference]: Start difference. First operand has 256 places, 210 transitions, 2541 flow. Second operand 10 states and 197 transitions. [2024-06-27 18:42:12,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 250 transitions, 3235 flow [2024-06-27 18:42:13,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 250 transitions, 3125 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:13,296 INFO L231 Difference]: Finished difference. Result has 260 places, 211 transitions, 2549 flow [2024-06-27 18:42:13,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2549, PETRI_PLACES=260, PETRI_TRANSITIONS=211} [2024-06-27 18:42:13,296 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-06-27 18:42:13,297 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 211 transitions, 2549 flow [2024-06-27 18:42:13,297 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 18:42:13,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:13,297 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 18:42:13,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:42:13,297 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 18:42:13,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash 749251664, now seen corresponding path program 14 times [2024-06-27 18:42:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:13,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975476165] [2024-06-27 18:42:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:13,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:13,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975476165] [2024-06-27 18:42:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975476165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:13,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:13,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:13,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127493570] [2024-06-27 18:42:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:13,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:14,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:14,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 211 transitions, 2549 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 18:42:14,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:14,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:14,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:14,969 INFO L124 PetriNetUnfolderBase]: 2002/3950 cut-off events. [2024-06-27 18:42:14,969 INFO L125 PetriNetUnfolderBase]: For 86967/86993 co-relation queries the response was YES. [2024-06-27 18:42:14,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22025 conditions, 3950 events. 2002/3950 cut-off events. For 86967/86993 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 29996 event pairs, 484 based on Foata normal form. 26/3910 useless extension candidates. Maximal degree in co-relation 21903. Up to 2986 conditions per place. [2024-06-27 18:42:15,011 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 194 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2024-06-27 18:42:15,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 253 transitions, 3278 flow [2024-06-27 18:42:15,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 18:42:15,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 18:42:15,013 INFO L175 Difference]: Start difference. First operand has 260 places, 211 transitions, 2549 flow. Second operand 10 states and 194 transitions. [2024-06-27 18:42:15,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 253 transitions, 3278 flow [2024-06-27 18:42:15,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 253 transitions, 3164 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:15,342 INFO L231 Difference]: Finished difference. Result has 263 places, 216 transitions, 2643 flow [2024-06-27 18:42:15,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2643, PETRI_PLACES=263, PETRI_TRANSITIONS=216} [2024-06-27 18:42:15,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-06-27 18:42:15,343 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 216 transitions, 2643 flow [2024-06-27 18:42:15,343 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 18:42:15,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:15,343 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 18:42:15,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:42:15,344 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 18:42:15,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1737081776, now seen corresponding path program 15 times [2024-06-27 18:42:15,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:15,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423267736] [2024-06-27 18:42:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:15,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:16,049 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 18:42:16,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:16,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423267736] [2024-06-27 18:42:16,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423267736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:16,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:16,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688881506] [2024-06-27 18:42:16,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:16,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:16,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:16,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:16,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:16,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 216 transitions, 2643 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 18:42:16,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:16,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:16,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:16,898 INFO L124 PetriNetUnfolderBase]: 2018/3983 cut-off events. [2024-06-27 18:42:16,898 INFO L125 PetriNetUnfolderBase]: For 89752/89779 co-relation queries the response was YES. [2024-06-27 18:42:16,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22303 conditions, 3983 events. 2018/3983 cut-off events. For 89752/89779 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 30316 event pairs, 476 based on Foata normal form. 27/3944 useless extension candidates. Maximal degree in co-relation 22179. Up to 3014 conditions per place. [2024-06-27 18:42:16,941 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 190 selfloop transitions, 55 changer transitions 0/255 dead transitions. [2024-06-27 18:42:16,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 255 transitions, 3352 flow [2024-06-27 18:42:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:16,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:42:16,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-27 18:42:16,942 INFO L175 Difference]: Start difference. First operand has 263 places, 216 transitions, 2643 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:42:16,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 255 transitions, 3352 flow [2024-06-27 18:42:17,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 255 transitions, 3207 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:17,262 INFO L231 Difference]: Finished difference. Result has 269 places, 218 transitions, 2686 flow [2024-06-27 18:42:17,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2686, PETRI_PLACES=269, PETRI_TRANSITIONS=218} [2024-06-27 18:42:17,262 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-27 18:42:17,263 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 218 transitions, 2686 flow [2024-06-27 18:42:17,263 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 18:42:17,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:17,263 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 18:42:17,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:42:17,263 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 18:42:17,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash 743681894, now seen corresponding path program 16 times [2024-06-27 18:42:17,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:17,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758942905] [2024-06-27 18:42:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:17,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:17,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758942905] [2024-06-27 18:42:17,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758942905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:17,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:17,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:17,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198688489] [2024-06-27 18:42:17,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:17,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:17,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:18,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:18,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 218 transitions, 2686 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 18:42:18,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:18,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:18,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:18,891 INFO L124 PetriNetUnfolderBase]: 2034/4013 cut-off events. [2024-06-27 18:42:18,891 INFO L125 PetriNetUnfolderBase]: For 88472/88502 co-relation queries the response was YES. [2024-06-27 18:42:18,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22336 conditions, 4013 events. 2034/4013 cut-off events. For 88472/88502 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30568 event pairs, 493 based on Foata normal form. 30/3975 useless extension candidates. Maximal degree in co-relation 22210. Up to 2988 conditions per place. [2024-06-27 18:42:18,939 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 196 selfloop transitions, 51 changer transitions 0/257 dead transitions. [2024-06-27 18:42:18,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 257 transitions, 3360 flow [2024-06-27 18:42:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 18:42:18,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-27 18:42:18,940 INFO L175 Difference]: Start difference. First operand has 269 places, 218 transitions, 2686 flow. Second operand 10 states and 196 transitions. [2024-06-27 18:42:18,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 257 transitions, 3360 flow [2024-06-27 18:42:19,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 257 transitions, 3230 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:19,357 INFO L231 Difference]: Finished difference. Result has 272 places, 219 transitions, 2690 flow [2024-06-27 18:42:19,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2690, PETRI_PLACES=272, PETRI_TRANSITIONS=219} [2024-06-27 18:42:19,357 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-27 18:42:19,357 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 219 transitions, 2690 flow [2024-06-27 18:42:19,357 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 18:42:19,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:19,357 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 18:42:19,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:42:19,357 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 18:42:19,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash 743537744, now seen corresponding path program 17 times [2024-06-27 18:42:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:19,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592983026] [2024-06-27 18:42:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:20,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:20,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592983026] [2024-06-27 18:42:20,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592983026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:20,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:20,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:20,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284313746] [2024-06-27 18:42:20,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:20,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:20,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:20,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:20,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:20,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 219 transitions, 2690 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 18:42:20,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:20,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:20,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:20,969 INFO L124 PetriNetUnfolderBase]: 2058/4016 cut-off events. [2024-06-27 18:42:20,969 INFO L125 PetriNetUnfolderBase]: For 90744/90775 co-relation queries the response was YES. [2024-06-27 18:42:20,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22531 conditions, 4016 events. 2058/4016 cut-off events. For 90744/90775 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 30394 event pairs, 486 based on Foata normal form. 29/3970 useless extension candidates. Maximal degree in co-relation 22404. Up to 2763 conditions per place. [2024-06-27 18:42:21,010 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 194 selfloop transitions, 57 changer transitions 0/261 dead transitions. [2024-06-27 18:42:21,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 261 transitions, 3546 flow [2024-06-27 18:42:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 18:42:21,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184210526315789 [2024-06-27 18:42:21,011 INFO L175 Difference]: Start difference. First operand has 272 places, 219 transitions, 2690 flow. Second operand 10 states and 197 transitions. [2024-06-27 18:42:21,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 261 transitions, 3546 flow [2024-06-27 18:42:21,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 261 transitions, 3422 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:21,387 INFO L231 Difference]: Finished difference. Result has 274 places, 221 transitions, 2742 flow [2024-06-27 18:42:21,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2742, PETRI_PLACES=274, PETRI_TRANSITIONS=221} [2024-06-27 18:42:21,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-27 18:42:21,388 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 221 transitions, 2742 flow [2024-06-27 18:42:21,388 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 18:42:21,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:21,388 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 18:42:21,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:42:21,388 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 18:42:21,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1491285540, now seen corresponding path program 18 times [2024-06-27 18:42:21,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:21,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028311774] [2024-06-27 18:42:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:22,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:22,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028311774] [2024-06-27 18:42:22,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028311774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:22,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:22,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:22,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211177644] [2024-06-27 18:42:22,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:22,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:22,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:22,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:22,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:22,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:22,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 221 transitions, 2742 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 18:42:22,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:22,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:22,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:23,067 INFO L124 PetriNetUnfolderBase]: 2067/4089 cut-off events. [2024-06-27 18:42:23,067 INFO L125 PetriNetUnfolderBase]: For 91921/91948 co-relation queries the response was YES. [2024-06-27 18:42:23,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22768 conditions, 4089 events. 2067/4089 cut-off events. For 91921/91948 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 31414 event pairs, 509 based on Foata normal form. 27/4049 useless extension candidates. Maximal degree in co-relation 22640. Up to 3094 conditions per place. [2024-06-27 18:42:23,112 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 200 selfloop transitions, 51 changer transitions 0/261 dead transitions. [2024-06-27 18:42:23,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 261 transitions, 3445 flow [2024-06-27 18:42:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 18:42:23,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 18:42:23,113 INFO L175 Difference]: Start difference. First operand has 274 places, 221 transitions, 2742 flow. Second operand 10 states and 194 transitions. [2024-06-27 18:42:23,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 261 transitions, 3445 flow [2024-06-27 18:42:23,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 261 transitions, 3339 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:23,527 INFO L231 Difference]: Finished difference. Result has 278 places, 224 transitions, 2793 flow [2024-06-27 18:42:23,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2793, PETRI_PLACES=278, PETRI_TRANSITIONS=224} [2024-06-27 18:42:23,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-27 18:42:23,528 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 224 transitions, 2793 flow [2024-06-27 18:42:23,528 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 18:42:23,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:23,528 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 18:42:23,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:42:23,528 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 18:42:23,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1667921984, now seen corresponding path program 19 times [2024-06-27 18:42:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139863321] [2024-06-27 18:42:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:24,258 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 18:42:24,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:24,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139863321] [2024-06-27 18:42:24,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139863321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:24,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:24,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:24,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197150413] [2024-06-27 18:42:24,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:24,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:24,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:24,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:24,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:24,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:24,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 224 transitions, 2793 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 18:42:24,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:24,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:24,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:25,269 INFO L124 PetriNetUnfolderBase]: 2080/4120 cut-off events. [2024-06-27 18:42:25,269 INFO L125 PetriNetUnfolderBase]: For 91456/91480 co-relation queries the response was YES. [2024-06-27 18:42:25,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22922 conditions, 4120 events. 2080/4120 cut-off events. For 91456/91480 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 31765 event pairs, 520 based on Foata normal form. 24/4077 useless extension candidates. Maximal degree in co-relation 22792. Up to 3117 conditions per place. [2024-06-27 18:42:25,314 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 200 selfloop transitions, 52 changer transitions 0/262 dead transitions. [2024-06-27 18:42:25,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 262 transitions, 3473 flow [2024-06-27 18:42:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:42:25,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-27 18:42:25,315 INFO L175 Difference]: Start difference. First operand has 278 places, 224 transitions, 2793 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:42:25,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 262 transitions, 3473 flow [2024-06-27 18:42:25,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 262 transitions, 3350 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:25,703 INFO L231 Difference]: Finished difference. Result has 280 places, 225 transitions, 2804 flow [2024-06-27 18:42:25,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2804, PETRI_PLACES=280, PETRI_TRANSITIONS=225} [2024-06-27 18:42:25,703 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-27 18:42:25,704 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 225 transitions, 2804 flow [2024-06-27 18:42:25,704 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 18:42:25,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:25,704 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 18:42:25,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:42:25,704 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 18:42:25,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:25,704 INFO L85 PathProgramCache]: Analyzing trace with hash -130035158, now seen corresponding path program 20 times [2024-06-27 18:42:25,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:25,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245934088] [2024-06-27 18:42:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:25,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245934088] [2024-06-27 18:42:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245934088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:26,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:26,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591377443] [2024-06-27 18:42:26,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:26,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:26,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:26,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:26,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 225 transitions, 2804 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 18:42:26,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:26,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:26,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:27,333 INFO L124 PetriNetUnfolderBase]: 2111/4174 cut-off events. [2024-06-27 18:42:27,333 INFO L125 PetriNetUnfolderBase]: For 87640/87664 co-relation queries the response was YES. [2024-06-27 18:42:27,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22967 conditions, 4174 events. 2111/4174 cut-off events. For 87640/87664 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 32153 event pairs, 507 based on Foata normal form. 24/4131 useless extension candidates. Maximal degree in co-relation 22837. Up to 3072 conditions per place. [2024-06-27 18:42:27,377 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 198 selfloop transitions, 55 changer transitions 0/263 dead transitions. [2024-06-27 18:42:27,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 263 transitions, 3464 flow [2024-06-27 18:42:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 18:42:27,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 18:42:27,378 INFO L175 Difference]: Start difference. First operand has 280 places, 225 transitions, 2804 flow. Second operand 10 states and 194 transitions. [2024-06-27 18:42:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 263 transitions, 3464 flow [2024-06-27 18:42:27,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 263 transitions, 3326 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:27,773 INFO L231 Difference]: Finished difference. Result has 283 places, 225 transitions, 2780 flow [2024-06-27 18:42:27,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2780, PETRI_PLACES=283, PETRI_TRANSITIONS=225} [2024-06-27 18:42:27,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-27 18:42:27,774 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 225 transitions, 2780 flow [2024-06-27 18:42:27,774 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 18:42:27,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:27,774 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 18:42:27,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:42:27,774 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 18:42:27,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash -509715632, now seen corresponding path program 3 times [2024-06-27 18:42:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:27,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750504177] [2024-06-27 18:42:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:27,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:28,674 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 18:42:28,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:28,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750504177] [2024-06-27 18:42:28,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750504177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:28,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:28,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408327803] [2024-06-27 18:42:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:28,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:28,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 225 transitions, 2780 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 18:42:28,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:28,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:28,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:29,750 INFO L124 PetriNetUnfolderBase]: 2103/4218 cut-off events. [2024-06-27 18:42:29,751 INFO L125 PetriNetUnfolderBase]: For 86050/86082 co-relation queries the response was YES. [2024-06-27 18:42:29,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22997 conditions, 4218 events. 2103/4218 cut-off events. For 86050/86082 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 32788 event pairs, 517 based on Foata normal form. 27/4178 useless extension candidates. Maximal degree in co-relation 22866. Up to 2939 conditions per place. [2024-06-27 18:42:29,799 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 210 selfloop transitions, 58 changer transitions 0/278 dead transitions. [2024-06-27 18:42:29,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 278 transitions, 3708 flow [2024-06-27 18:42:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:42:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:42:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-06-27 18:42:29,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153508771929824 [2024-06-27 18:42:29,800 INFO L175 Difference]: Start difference. First operand has 283 places, 225 transitions, 2780 flow. Second operand 12 states and 235 transitions. [2024-06-27 18:42:29,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 278 transitions, 3708 flow [2024-06-27 18:42:30,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 278 transitions, 3564 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:30,213 INFO L231 Difference]: Finished difference. Result has 287 places, 230 transitions, 2884 flow [2024-06-27 18:42:30,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2884, PETRI_PLACES=287, PETRI_TRANSITIONS=230} [2024-06-27 18:42:30,213 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-27 18:42:30,213 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 230 transitions, 2884 flow [2024-06-27 18:42:30,213 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 18:42:30,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:30,214 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 18:42:30,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:42:30,214 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 18:42:30,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash 136203878, now seen corresponding path program 4 times [2024-06-27 18:42:30,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:30,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137710696] [2024-06-27 18:42:30,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:30,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:30,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:30,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137710696] [2024-06-27 18:42:30,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137710696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:30,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:30,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:30,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178823136] [2024-06-27 18:42:30,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:30,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:30,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:31,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:31,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 230 transitions, 2884 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 18:42:31,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:31,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:31,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:32,018 INFO L124 PetriNetUnfolderBase]: 2178/4114 cut-off events. [2024-06-27 18:42:32,018 INFO L125 PetriNetUnfolderBase]: For 99849/99885 co-relation queries the response was YES. [2024-06-27 18:42:32,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24307 conditions, 4114 events. 2178/4114 cut-off events. For 99849/99885 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 30632 event pairs, 380 based on Foata normal form. 27/4022 useless extension candidates. Maximal degree in co-relation 24174. Up to 2842 conditions per place. [2024-06-27 18:42:32,065 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 192 selfloop transitions, 98 changer transitions 0/300 dead transitions. [2024-06-27 18:42:32,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 300 transitions, 4472 flow [2024-06-27 18:42:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-27 18:42:32,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215311004784688 [2024-06-27 18:42:32,066 INFO L175 Difference]: Start difference. First operand has 287 places, 230 transitions, 2884 flow. Second operand 11 states and 218 transitions. [2024-06-27 18:42:32,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 300 transitions, 4472 flow [2024-06-27 18:42:32,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 300 transitions, 4273 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:32,498 INFO L231 Difference]: Finished difference. Result has 294 places, 248 transitions, 3533 flow [2024-06-27 18:42:32,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3533, PETRI_PLACES=294, PETRI_TRANSITIONS=248} [2024-06-27 18:42:32,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-27 18:42:32,499 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 248 transitions, 3533 flow [2024-06-27 18:42:32,499 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 18:42:32,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:32,499 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 18:42:32,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:42:32,499 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 18:42:32,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:32,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1727867770, now seen corresponding path program 5 times [2024-06-27 18:42:32,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:32,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156291002] [2024-06-27 18:42:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:33,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:33,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156291002] [2024-06-27 18:42:33,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156291002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:33,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808086164] [2024-06-27 18:42:33,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:33,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:33,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:33,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 248 transitions, 3533 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 18:42:33,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:33,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:33,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:34,525 INFO L124 PetriNetUnfolderBase]: 2193/4391 cut-off events. [2024-06-27 18:42:34,525 INFO L125 PetriNetUnfolderBase]: For 107239/107276 co-relation queries the response was YES. [2024-06-27 18:42:34,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25841 conditions, 4391 events. 2193/4391 cut-off events. For 107239/107276 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34523 event pairs, 520 based on Foata normal form. 22/4333 useless extension candidates. Maximal degree in co-relation 25702. Up to 3071 conditions per place. [2024-06-27 18:42:34,581 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 226 selfloop transitions, 65 changer transitions 0/301 dead transitions. [2024-06-27 18:42:34,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 301 transitions, 4533 flow [2024-06-27 18:42:34,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:42:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:42:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-06-27 18:42:34,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109649122807017 [2024-06-27 18:42:34,582 INFO L175 Difference]: Start difference. First operand has 294 places, 248 transitions, 3533 flow. Second operand 12 states and 233 transitions. [2024-06-27 18:42:34,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 301 transitions, 4533 flow [2024-06-27 18:42:35,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 301 transitions, 4169 flow, removed 174 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:35,130 INFO L231 Difference]: Finished difference. Result has 305 places, 253 transitions, 3447 flow [2024-06-27 18:42:35,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3447, PETRI_PLACES=305, PETRI_TRANSITIONS=253} [2024-06-27 18:42:35,131 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-27 18:42:35,131 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 253 transitions, 3447 flow [2024-06-27 18:42:35,131 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 18:42:35,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:35,131 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 18:42:35,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:42:35,131 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 18:42:35,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:35,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1457412088, now seen corresponding path program 6 times [2024-06-27 18:42:35,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:35,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730690070] [2024-06-27 18:42:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:35,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:35,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730690070] [2024-06-27 18:42:35,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730690070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:35,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:35,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:35,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051722725] [2024-06-27 18:42:35,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:35,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:35,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:36,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:36,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 253 transitions, 3447 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 18:42:36,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:36,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:36,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:36,964 INFO L124 PetriNetUnfolderBase]: 2207/4345 cut-off events. [2024-06-27 18:42:36,964 INFO L125 PetriNetUnfolderBase]: For 106159/106205 co-relation queries the response was YES. [2024-06-27 18:42:37,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25731 conditions, 4345 events. 2207/4345 cut-off events. For 106159/106205 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 33744 event pairs, 610 based on Foata normal form. 26/4290 useless extension candidates. Maximal degree in co-relation 25589. Up to 3524 conditions per place. [2024-06-27 18:42:37,018 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 263 selfloop transitions, 34 changer transitions 0/307 dead transitions. [2024-06-27 18:42:37,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 307 transitions, 4582 flow [2024-06-27 18:42:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:42:37,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-27 18:42:37,019 INFO L175 Difference]: Start difference. First operand has 305 places, 253 transitions, 3447 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:42:37,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 307 transitions, 4582 flow [2024-06-27 18:42:37,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 307 transitions, 4359 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:37,500 INFO L231 Difference]: Finished difference. Result has 313 places, 267 transitions, 3685 flow [2024-06-27 18:42:37,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3685, PETRI_PLACES=313, PETRI_TRANSITIONS=267} [2024-06-27 18:42:37,500 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 271 predicate places. [2024-06-27 18:42:37,500 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 267 transitions, 3685 flow [2024-06-27 18:42:37,501 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 18:42:37,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:37,501 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 18:42:37,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:42:37,501 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 18:42:37,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 664669008, now seen corresponding path program 7 times [2024-06-27 18:42:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:37,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749441501] [2024-06-27 18:42:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:37,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:38,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:38,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749441501] [2024-06-27 18:42:38,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749441501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:38,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:38,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437112824] [2024-06-27 18:42:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:38,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:38,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:38,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:38,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 267 transitions, 3685 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 18:42:38,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:38,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:38,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:39,411 INFO L124 PetriNetUnfolderBase]: 2216/4365 cut-off events. [2024-06-27 18:42:39,411 INFO L125 PetriNetUnfolderBase]: For 107400/107446 co-relation queries the response was YES. [2024-06-27 18:42:39,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25772 conditions, 4365 events. 2216/4365 cut-off events. For 107400/107446 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 33949 event pairs, 611 based on Foata normal form. 26/4307 useless extension candidates. Maximal degree in co-relation 25623. Up to 3493 conditions per place. [2024-06-27 18:42:39,473 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 266 selfloop transitions, 42 changer transitions 0/318 dead transitions. [2024-06-27 18:42:39,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 318 transitions, 4729 flow [2024-06-27 18:42:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:42:39,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:42:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-27 18:42:39,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 18:42:39,474 INFO L175 Difference]: Start difference. First operand has 313 places, 267 transitions, 3685 flow. Second operand 12 states and 222 transitions. [2024-06-27 18:42:39,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 318 transitions, 4729 flow [2024-06-27 18:42:39,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 318 transitions, 4488 flow, removed 117 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:39,978 INFO L231 Difference]: Finished difference. Result has 325 places, 273 transitions, 3754 flow [2024-06-27 18:42:39,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3754, PETRI_PLACES=325, PETRI_TRANSITIONS=273} [2024-06-27 18:42:39,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-27 18:42:39,978 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 273 transitions, 3754 flow [2024-06-27 18:42:39,979 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 18:42:39,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:39,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:39,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:42:39,979 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 18:42:39,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1268720690, now seen corresponding path program 1 times [2024-06-27 18:42:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:39,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930895062] [2024-06-27 18:42:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:39,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:40,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:40,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930895062] [2024-06-27 18:42:40,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930895062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:40,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:40,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:40,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211109182] [2024-06-27 18:42:40,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:40,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:40,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:40,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:40,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:40,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 273 transitions, 3754 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 18:42:40,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:40,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:40,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:41,862 INFO L124 PetriNetUnfolderBase]: 2246/4282 cut-off events. [2024-06-27 18:42:41,862 INFO L125 PetriNetUnfolderBase]: For 115946/116033 co-relation queries the response was YES. [2024-06-27 18:42:41,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25988 conditions, 4282 events. 2246/4282 cut-off events. For 115946/116033 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32366 event pairs, 692 based on Foata normal form. 40/4206 useless extension candidates. Maximal degree in co-relation 25835. Up to 3541 conditions per place. [2024-06-27 18:42:41,915 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 286 selfloop transitions, 23 changer transitions 0/319 dead transitions. [2024-06-27 18:42:41,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 319 transitions, 4538 flow [2024-06-27 18:42:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:42:41,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-27 18:42:41,917 INFO L175 Difference]: Start difference. First operand has 325 places, 273 transitions, 3754 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:42:41,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 319 transitions, 4538 flow [2024-06-27 18:42:42,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 319 transitions, 4331 flow, removed 83 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:42,579 INFO L231 Difference]: Finished difference. Result has 328 places, 274 transitions, 3609 flow [2024-06-27 18:42:42,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3547, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3609, PETRI_PLACES=328, PETRI_TRANSITIONS=274} [2024-06-27 18:42:42,579 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-06-27 18:42:42,579 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 274 transitions, 3609 flow [2024-06-27 18:42:42,580 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 18:42:42,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:42,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:42:42,580 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 18:42:42,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash -691799408, now seen corresponding path program 2 times [2024-06-27 18:42:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:42,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650503966] [2024-06-27 18:42:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:43,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:43,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650503966] [2024-06-27 18:42:43,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650503966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:43,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:43,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:43,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161760168] [2024-06-27 18:42:43,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:43,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:43,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:43,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:43,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:43,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:43,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 274 transitions, 3609 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 18:42:43,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:43,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:43,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:44,626 INFO L124 PetriNetUnfolderBase]: 2288/4386 cut-off events. [2024-06-27 18:42:44,626 INFO L125 PetriNetUnfolderBase]: For 120243/120320 co-relation queries the response was YES. [2024-06-27 18:42:44,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26374 conditions, 4386 events. 2288/4386 cut-off events. For 120243/120320 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 33600 event pairs, 735 based on Foata normal form. 32/4319 useless extension candidates. Maximal degree in co-relation 26220. Up to 3458 conditions per place. [2024-06-27 18:42:44,685 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 285 selfloop transitions, 28 changer transitions 0/323 dead transitions. [2024-06-27 18:42:44,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 323 transitions, 4589 flow [2024-06-27 18:42:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:42:44,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-06-27 18:42:44,687 INFO L175 Difference]: Start difference. First operand has 328 places, 274 transitions, 3609 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:42:44,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 323 transitions, 4589 flow [2024-06-27 18:42:45,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 323 transitions, 4537 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:45,389 INFO L231 Difference]: Finished difference. Result has 330 places, 276 transitions, 3643 flow [2024-06-27 18:42:45,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3643, PETRI_PLACES=330, PETRI_TRANSITIONS=276} [2024-06-27 18:42:45,389 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-06-27 18:42:45,389 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 276 transitions, 3643 flow [2024-06-27 18:42:45,389 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 18:42:45,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:45,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:45,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:42:45,390 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 18:42:45,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:45,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1042311222, now seen corresponding path program 3 times [2024-06-27 18:42:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:45,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119186182] [2024-06-27 18:42:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119186182] [2024-06-27 18:42:46,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119186182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:46,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:46,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:46,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716933354] [2024-06-27 18:42:46,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:46,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:46,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:46,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:46,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:46,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:46,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 276 transitions, 3643 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 18:42:46,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:46,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:46,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:47,370 INFO L124 PetriNetUnfolderBase]: 2304/4412 cut-off events. [2024-06-27 18:42:47,371 INFO L125 PetriNetUnfolderBase]: For 122552/122633 co-relation queries the response was YES. [2024-06-27 18:42:47,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26622 conditions, 4412 events. 2304/4412 cut-off events. For 122552/122633 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 33731 event pairs, 749 based on Foata normal form. 32/4347 useless extension candidates. Maximal degree in co-relation 26467. Up to 3586 conditions per place. [2024-06-27 18:42:47,424 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 284 selfloop transitions, 29 changer transitions 0/323 dead transitions. [2024-06-27 18:42:47,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 323 transitions, 4613 flow [2024-06-27 18:42:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:47,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:42:47,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507177033492823 [2024-06-27 18:42:47,425 INFO L175 Difference]: Start difference. First operand has 330 places, 276 transitions, 3643 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:42:47,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 323 transitions, 4613 flow [2024-06-27 18:42:48,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 323 transitions, 4566 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:48,094 INFO L231 Difference]: Finished difference. Result has 334 places, 277 transitions, 3672 flow [2024-06-27 18:42:48,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3598, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3672, PETRI_PLACES=334, PETRI_TRANSITIONS=277} [2024-06-27 18:42:48,094 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 292 predicate places. [2024-06-27 18:42:48,094 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 277 transitions, 3672 flow [2024-06-27 18:42:48,094 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 18:42:48,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:48,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:48,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:42:48,095 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 18:42:48,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1922662702, now seen corresponding path program 4 times [2024-06-27 18:42:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:48,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315775516] [2024-06-27 18:42:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:48,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:48,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315775516] [2024-06-27 18:42:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315775516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:48,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:48,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773441819] [2024-06-27 18:42:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:48,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:49,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:49,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 277 transitions, 3672 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 18:42:49,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:49,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:49,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:50,079 INFO L124 PetriNetUnfolderBase]: 2324/4467 cut-off events. [2024-06-27 18:42:50,079 INFO L125 PetriNetUnfolderBase]: For 124038/124125 co-relation queries the response was YES. [2024-06-27 18:42:50,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26874 conditions, 4467 events. 2324/4467 cut-off events. For 124038/124125 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34311 event pairs, 785 based on Foata normal form. 38/4412 useless extension candidates. Maximal degree in co-relation 26717. Up to 3739 conditions per place. [2024-06-27 18:42:50,136 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 283 selfloop transitions, 28 changer transitions 0/321 dead transitions. [2024-06-27 18:42:50,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 321 transitions, 4470 flow [2024-06-27 18:42:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:42:50,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-27 18:42:50,138 INFO L175 Difference]: Start difference. First operand has 334 places, 277 transitions, 3672 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:42:50,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 321 transitions, 4470 flow [2024-06-27 18:42:50,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 321 transitions, 4401 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:50,831 INFO L231 Difference]: Finished difference. Result has 336 places, 278 transitions, 3679 flow [2024-06-27 18:42:50,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3679, PETRI_PLACES=336, PETRI_TRANSITIONS=278} [2024-06-27 18:42:50,832 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2024-06-27 18:42:50,832 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 278 transitions, 3679 flow [2024-06-27 18:42:50,832 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 18:42:50,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:50,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:50,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:42:50,832 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 18:42:50,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash -514667888, now seen corresponding path program 5 times [2024-06-27 18:42:50,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:50,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495809379] [2024-06-27 18:42:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:50,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:51,718 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 18:42:51,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:51,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495809379] [2024-06-27 18:42:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495809379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:51,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:51,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180518256] [2024-06-27 18:42:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:51,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:51,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:51,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:51,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 278 transitions, 3679 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 18:42:51,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:51,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:51,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:52,866 INFO L124 PetriNetUnfolderBase]: 2321/4454 cut-off events. [2024-06-27 18:42:52,866 INFO L125 PetriNetUnfolderBase]: For 118067/118154 co-relation queries the response was YES. [2024-06-27 18:42:52,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26611 conditions, 4454 events. 2321/4454 cut-off events. For 118067/118154 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34151 event pairs, 772 based on Foata normal form. 38/4399 useless extension candidates. Maximal degree in co-relation 26453. Up to 3684 conditions per place. [2024-06-27 18:42:52,925 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 283 selfloop transitions, 29 changer transitions 0/322 dead transitions. [2024-06-27 18:42:52,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 322 transitions, 4467 flow [2024-06-27 18:42:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:52,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 18:42:52,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:42:52,926 INFO L175 Difference]: Start difference. First operand has 336 places, 278 transitions, 3679 flow. Second operand 11 states and 209 transitions. [2024-06-27 18:42:52,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 322 transitions, 4467 flow [2024-06-27 18:42:53,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 322 transitions, 4397 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:53,621 INFO L231 Difference]: Finished difference. Result has 338 places, 278 transitions, 3671 flow [2024-06-27 18:42:53,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3609, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3671, PETRI_PLACES=338, PETRI_TRANSITIONS=278} [2024-06-27 18:42:53,621 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-27 18:42:53,622 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 278 transitions, 3671 flow [2024-06-27 18:42:53,622 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 18:42:53,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:53,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:53,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:42:53,622 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 18:42:53,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash -514421810, now seen corresponding path program 1 times [2024-06-27 18:42:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668704465] [2024-06-27 18:42:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:54,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668704465] [2024-06-27 18:42:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668704465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:54,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:54,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:42:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405185579] [2024-06-27 18:42:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:54,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:42:54,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:54,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:42:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:42:54,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:54,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 278 transitions, 3671 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:54,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:54,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:54,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:55,964 INFO L124 PetriNetUnfolderBase]: 2373/4569 cut-off events. [2024-06-27 18:42:55,965 INFO L125 PetriNetUnfolderBase]: For 141540/141621 co-relation queries the response was YES. [2024-06-27 18:42:56,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27268 conditions, 4569 events. 2373/4569 cut-off events. For 141540/141621 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 35317 event pairs, 794 based on Foata normal form. 38/4514 useless extension candidates. Maximal degree in co-relation 27109. Up to 3714 conditions per place. [2024-06-27 18:42:56,028 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 281 selfloop transitions, 39 changer transitions 0/330 dead transitions. [2024-06-27 18:42:56,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 330 transitions, 4577 flow [2024-06-27 18:42:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:42:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:42:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 241 transitions. [2024-06-27 18:42:56,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48785425101214575 [2024-06-27 18:42:56,029 INFO L175 Difference]: Start difference. First operand has 338 places, 278 transitions, 3671 flow. Second operand 13 states and 241 transitions. [2024-06-27 18:42:56,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 330 transitions, 4577 flow [2024-06-27 18:42:56,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 330 transitions, 4513 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:42:56,783 INFO L231 Difference]: Finished difference. Result has 341 places, 278 transitions, 3689 flow [2024-06-27 18:42:56,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3689, PETRI_PLACES=341, PETRI_TRANSITIONS=278} [2024-06-27 18:42:56,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2024-06-27 18:42:56,784 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 278 transitions, 3689 flow [2024-06-27 18:42:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:56,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:56,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:56,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:42:56,784 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:56,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash 428706783, now seen corresponding path program 1 times [2024-06-27 18:42:56,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:56,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982441259] [2024-06-27 18:42:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:56,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982441259] [2024-06-27 18:42:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982441259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:56,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:56,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:42:56,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224595859] [2024-06-27 18:42:56,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:56,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:42:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:42:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:42:56,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-27 18:42:56,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 278 transitions, 3689 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:56,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:56,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-27 18:42:56,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:57,682 INFO L124 PetriNetUnfolderBase]: 2123/4416 cut-off events. [2024-06-27 18:42:57,682 INFO L125 PetriNetUnfolderBase]: For 100954/101449 co-relation queries the response was YES. [2024-06-27 18:42:57,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24117 conditions, 4416 events. 2123/4416 cut-off events. For 100954/101449 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 37681 event pairs, 455 based on Foata normal form. 271/4435 useless extension candidates. Maximal degree in co-relation 23958. Up to 2067 conditions per place. [2024-06-27 18:42:57,733 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 137 selfloop transitions, 33 changer transitions 85/417 dead transitions. [2024-06-27 18:42:57,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 417 transitions, 5969 flow [2024-06-27 18:42:57,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:42:57,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5986842105263158 [2024-06-27 18:42:57,734 INFO L175 Difference]: Start difference. First operand has 341 places, 278 transitions, 3689 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:42:57,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 417 transitions, 5969 flow [2024-06-27 18:42:58,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 417 transitions, 5755 flow, removed 57 selfloop flow, removed 11 redundant places. [2024-06-27 18:42:58,304 INFO L231 Difference]: Finished difference. Result has 343 places, 281 transitions, 3729 flow [2024-06-27 18:42:58,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3575, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3729, PETRI_PLACES=343, PETRI_TRANSITIONS=281} [2024-06-27 18:42:58,304 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-06-27 18:42:58,304 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 281 transitions, 3729 flow [2024-06-27 18:42:58,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:58,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:58,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:58,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:42:58,304 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 18:42:58,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2118363242, now seen corresponding path program 6 times [2024-06-27 18:42:58,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:58,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966383090] [2024-06-27 18:42:58,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:58,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:58,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:58,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966383090] [2024-06-27 18:42:58,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966383090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:58,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:58,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670741895] [2024-06-27 18:42:58,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:58,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:58,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:59,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:42:59,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 281 transitions, 3729 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 18:42:59,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:59,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:42:59,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:00,231 INFO L124 PetriNetUnfolderBase]: 2302/4478 cut-off events. [2024-06-27 18:43:00,231 INFO L125 PetriNetUnfolderBase]: For 123063/123156 co-relation queries the response was YES. [2024-06-27 18:43:00,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27670 conditions, 4478 events. 2302/4478 cut-off events. For 123063/123156 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 34767 event pairs, 705 based on Foata normal form. 50/4449 useless extension candidates. Maximal degree in co-relation 27505. Up to 3665 conditions per place. [2024-06-27 18:43:00,284 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 283 selfloop transitions, 31 changer transitions 4/329 dead transitions. [2024-06-27 18:43:00,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 329 transitions, 4662 flow [2024-06-27 18:43:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 18:43:00,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047846889952153 [2024-06-27 18:43:00,285 INFO L175 Difference]: Start difference. First operand has 343 places, 281 transitions, 3729 flow. Second operand 11 states and 211 transitions. [2024-06-27 18:43:00,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 329 transitions, 4662 flow [2024-06-27 18:43:00,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 329 transitions, 4612 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:00,980 INFO L231 Difference]: Finished difference. Result has 351 places, 284 transitions, 3860 flow [2024-06-27 18:43:00,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3687, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3860, PETRI_PLACES=351, PETRI_TRANSITIONS=284} [2024-06-27 18:43:00,981 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2024-06-27 18:43:00,981 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 284 transitions, 3860 flow [2024-06-27 18:43:00,981 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 18:43:00,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:00,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:00,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:43:00,982 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 18:43:00,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash -641559122, now seen corresponding path program 7 times [2024-06-27 18:43:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637269279] [2024-06-27 18:43:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:01,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:01,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637269279] [2024-06-27 18:43:01,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637269279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:01,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:01,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186403889] [2024-06-27 18:43:01,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:01,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:01,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 284 transitions, 3860 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 18:43:01,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:01,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:01,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:03,139 INFO L124 PetriNetUnfolderBase]: 2276/4409 cut-off events. [2024-06-27 18:43:03,139 INFO L125 PetriNetUnfolderBase]: For 124782/124864 co-relation queries the response was YES. [2024-06-27 18:43:03,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27217 conditions, 4409 events. 2276/4409 cut-off events. For 124782/124864 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 33889 event pairs, 664 based on Foata normal form. 41/4378 useless extension candidates. Maximal degree in co-relation 27049. Up to 3532 conditions per place. [2024-06-27 18:43:03,200 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 276 selfloop transitions, 44 changer transitions 0/331 dead transitions. [2024-06-27 18:43:03,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 331 transitions, 4743 flow [2024-06-27 18:43:03,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 18:43:03,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095693779904307 [2024-06-27 18:43:03,201 INFO L175 Difference]: Start difference. First operand has 351 places, 284 transitions, 3860 flow. Second operand 11 states and 213 transitions. [2024-06-27 18:43:03,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 331 transitions, 4743 flow [2024-06-27 18:43:04,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 331 transitions, 4590 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:04,054 INFO L231 Difference]: Finished difference. Result has 353 places, 288 transitions, 3866 flow [2024-06-27 18:43:04,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3866, PETRI_PLACES=353, PETRI_TRANSITIONS=288} [2024-06-27 18:43:04,055 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-27 18:43:04,055 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 288 transitions, 3866 flow [2024-06-27 18:43:04,055 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 18:43:04,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:04,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:04,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:43:04,055 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 18:43:04,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:04,055 INFO L85 PathProgramCache]: Analyzing trace with hash -647988212, now seen corresponding path program 8 times [2024-06-27 18:43:04,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:04,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744107410] [2024-06-27 18:43:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:04,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:04,856 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 18:43:04,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:04,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744107410] [2024-06-27 18:43:04,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744107410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:04,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:04,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:04,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417733887] [2024-06-27 18:43:04,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:04,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:04,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:04,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:04,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:04,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:04,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 288 transitions, 3866 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 18:43:04,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:04,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:04,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:06,063 INFO L124 PetriNetUnfolderBase]: 2296/4435 cut-off events. [2024-06-27 18:43:06,063 INFO L125 PetriNetUnfolderBase]: For 123556/123642 co-relation queries the response was YES. [2024-06-27 18:43:06,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27044 conditions, 4435 events. 2296/4435 cut-off events. For 123556/123642 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 34096 event pairs, 651 based on Foata normal form. 43/4406 useless extension candidates. Maximal degree in co-relation 26877. Up to 3418 conditions per place. [2024-06-27 18:43:06,118 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 275 selfloop transitions, 47 changer transitions 0/333 dead transitions. [2024-06-27 18:43:06,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 333 transitions, 4708 flow [2024-06-27 18:43:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:06,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 18:43:06,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095693779904307 [2024-06-27 18:43:06,119 INFO L175 Difference]: Start difference. First operand has 353 places, 288 transitions, 3866 flow. Second operand 11 states and 213 transitions. [2024-06-27 18:43:06,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 333 transitions, 4708 flow [2024-06-27 18:43:06,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 333 transitions, 4644 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:06,791 INFO L231 Difference]: Finished difference. Result has 359 places, 289 transitions, 3920 flow [2024-06-27 18:43:06,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3920, PETRI_PLACES=359, PETRI_TRANSITIONS=289} [2024-06-27 18:43:06,791 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-06-27 18:43:06,791 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 289 transitions, 3920 flow [2024-06-27 18:43:06,792 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 18:43:06,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:06,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:06,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:43:06,792 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 18:43:06,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash -617661266, now seen corresponding path program 9 times [2024-06-27 18:43:06,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:06,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027905187] [2024-06-27 18:43:06,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:06,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:07,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027905187] [2024-06-27 18:43:07,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027905187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:07,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:07,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:07,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307383743] [2024-06-27 18:43:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:07,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:07,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:07,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 289 transitions, 3920 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 18:43:07,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:07,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:07,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:08,974 INFO L124 PetriNetUnfolderBase]: 2327/4507 cut-off events. [2024-06-27 18:43:08,974 INFO L125 PetriNetUnfolderBase]: For 133947/134029 co-relation queries the response was YES. [2024-06-27 18:43:09,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27795 conditions, 4507 events. 2327/4507 cut-off events. For 133947/134029 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34806 event pairs, 693 based on Foata normal form. 43/4480 useless extension candidates. Maximal degree in co-relation 27626. Up to 3546 conditions per place. [2024-06-27 18:43:09,025 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 284 selfloop transitions, 43 changer transitions 0/338 dead transitions. [2024-06-27 18:43:09,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 338 transitions, 4999 flow [2024-06-27 18:43:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:09,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:09,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-27 18:43:09,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215311004784688 [2024-06-27 18:43:09,026 INFO L175 Difference]: Start difference. First operand has 359 places, 289 transitions, 3920 flow. Second operand 11 states and 218 transitions. [2024-06-27 18:43:09,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 338 transitions, 4999 flow [2024-06-27 18:43:09,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 338 transitions, 4889 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:09,832 INFO L231 Difference]: Finished difference. Result has 361 places, 292 transitions, 3963 flow [2024-06-27 18:43:09,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3963, PETRI_PLACES=361, PETRI_TRANSITIONS=292} [2024-06-27 18:43:09,832 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-27 18:43:09,833 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 292 transitions, 3963 flow [2024-06-27 18:43:09,833 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 18:43:09,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:09,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:09,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:43:09,833 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 18:43:09,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:09,834 INFO L85 PathProgramCache]: Analyzing trace with hash -611232176, now seen corresponding path program 10 times [2024-06-27 18:43:09,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:09,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862858660] [2024-06-27 18:43:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:10,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:10,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862858660] [2024-06-27 18:43:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862858660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:10,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:10,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932412447] [2024-06-27 18:43:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:10,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:10,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 292 transitions, 3963 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 18:43:10,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:10,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:11,973 INFO L124 PetriNetUnfolderBase]: 2324/4504 cut-off events. [2024-06-27 18:43:11,973 INFO L125 PetriNetUnfolderBase]: For 127704/127782 co-relation queries the response was YES. [2024-06-27 18:43:12,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27570 conditions, 4504 events. 2324/4504 cut-off events. For 127704/127782 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34795 event pairs, 705 based on Foata normal form. 41/4475 useless extension candidates. Maximal degree in co-relation 27400. Up to 3616 conditions per place. [2024-06-27 18:43:12,138 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 282 selfloop transitions, 43 changer transitions 0/336 dead transitions. [2024-06-27 18:43:12,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 336 transitions, 4813 flow [2024-06-27 18:43:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:43:12,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-06-27 18:43:12,139 INFO L175 Difference]: Start difference. First operand has 361 places, 292 transitions, 3963 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:43:12,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 336 transitions, 4813 flow [2024-06-27 18:43:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 336 transitions, 4727 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:12,937 INFO L231 Difference]: Finished difference. Result has 367 places, 293 transitions, 3989 flow [2024-06-27 18:43:12,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3895, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3989, PETRI_PLACES=367, PETRI_TRANSITIONS=293} [2024-06-27 18:43:12,937 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 325 predicate places. [2024-06-27 18:43:12,937 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 293 transitions, 3989 flow [2024-06-27 18:43:12,937 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 18:43:12,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:12,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:12,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:43:12,938 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 18:43:12,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1266355378, now seen corresponding path program 11 times [2024-06-27 18:43:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:12,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714247587] [2024-06-27 18:43:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:13,673 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 18:43:13,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:13,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714247587] [2024-06-27 18:43:13,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714247587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:13,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:13,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:13,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028622339] [2024-06-27 18:43:13,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:13,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:13,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:13,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:13,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 293 transitions, 3989 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 18:43:13,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:13,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:13,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:14,957 INFO L124 PetriNetUnfolderBase]: 2352/4497 cut-off events. [2024-06-27 18:43:14,957 INFO L125 PetriNetUnfolderBase]: For 128533/128629 co-relation queries the response was YES. [2024-06-27 18:43:15,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27616 conditions, 4497 events. 2352/4497 cut-off events. For 128533/128629 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34334 event pairs, 672 based on Foata normal form. 51/4477 useless extension candidates. Maximal degree in co-relation 27444. Up to 3356 conditions per place. [2024-06-27 18:43:15,022 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 287 selfloop transitions, 40 changer transitions 0/338 dead transitions. [2024-06-27 18:43:15,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 338 transitions, 4843 flow [2024-06-27 18:43:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 18:43:15,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095693779904307 [2024-06-27 18:43:15,023 INFO L175 Difference]: Start difference. First operand has 367 places, 293 transitions, 3989 flow. Second operand 11 states and 213 transitions. [2024-06-27 18:43:15,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 338 transitions, 4843 flow [2024-06-27 18:43:15,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 338 transitions, 4756 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:15,981 INFO L231 Difference]: Finished difference. Result has 369 places, 294 transitions, 4010 flow [2024-06-27 18:43:15,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4010, PETRI_PLACES=369, PETRI_TRANSITIONS=294} [2024-06-27 18:43:15,982 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 327 predicate places. [2024-06-27 18:43:15,982 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 294 transitions, 4010 flow [2024-06-27 18:43:15,982 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 18:43:15,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:15,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:15,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:43:15,982 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 18:43:15,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash -984512626, now seen corresponding path program 2 times [2024-06-27 18:43:15,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:15,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217702749] [2024-06-27 18:43:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:15,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:17,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217702749] [2024-06-27 18:43:17,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217702749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:17,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:17,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:43:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096046917] [2024-06-27 18:43:17,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:17,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:43:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:43:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:43:17,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:17,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 294 transitions, 4010 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:17,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:17,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:18,434 INFO L124 PetriNetUnfolderBase]: 2415/4688 cut-off events. [2024-06-27 18:43:18,434 INFO L125 PetriNetUnfolderBase]: For 154061/154135 co-relation queries the response was YES. [2024-06-27 18:43:18,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28619 conditions, 4688 events. 2415/4688 cut-off events. For 154061/154135 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 36593 event pairs, 741 based on Foata normal form. 49/4667 useless extension candidates. Maximal degree in co-relation 28446. Up to 3735 conditions per place. [2024-06-27 18:43:18,499 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 299 selfloop transitions, 42 changer transitions 0/352 dead transitions. [2024-06-27 18:43:18,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 352 transitions, 5039 flow [2024-06-27 18:43:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:43:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:43:18,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 247 transitions. [2024-06-27 18:43:18,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:43:18,500 INFO L175 Difference]: Start difference. First operand has 369 places, 294 transitions, 4010 flow. Second operand 13 states and 247 transitions. [2024-06-27 18:43:18,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 352 transitions, 5039 flow [2024-06-27 18:43:19,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 352 transitions, 4927 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:19,359 INFO L231 Difference]: Finished difference. Result has 374 places, 299 transitions, 4052 flow [2024-06-27 18:43:19,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4052, PETRI_PLACES=374, PETRI_TRANSITIONS=299} [2024-06-27 18:43:19,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-06-27 18:43:19,360 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 299 transitions, 4052 flow [2024-06-27 18:43:19,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:19,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:19,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:19,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:43:19,360 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 18:43:19,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:19,360 INFO L85 PathProgramCache]: Analyzing trace with hash -984156436, now seen corresponding path program 3 times [2024-06-27 18:43:19,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:19,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505736047] [2024-06-27 18:43:19,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:19,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:20,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:20,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505736047] [2024-06-27 18:43:20,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505736047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:20,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:20,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:43:20,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111474581] [2024-06-27 18:43:20,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:20,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:43:20,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:43:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:43:20,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:20,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 299 transitions, 4052 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:20,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:20,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:20,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:21,588 INFO L124 PetriNetUnfolderBase]: 2523/4920 cut-off events. [2024-06-27 18:43:21,589 INFO L125 PetriNetUnfolderBase]: For 156598/156668 co-relation queries the response was YES. [2024-06-27 18:43:21,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30089 conditions, 4920 events. 2523/4920 cut-off events. For 156598/156668 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38854 event pairs, 732 based on Foata normal form. 45/4893 useless extension candidates. Maximal degree in co-relation 29914. Up to 3422 conditions per place. [2024-06-27 18:43:21,660 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 265 selfloop transitions, 80 changer transitions 0/356 dead transitions. [2024-06-27 18:43:21,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 356 transitions, 5256 flow [2024-06-27 18:43:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:43:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:43:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-06-27 18:43:21,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-27 18:43:21,661 INFO L175 Difference]: Start difference. First operand has 374 places, 299 transitions, 4052 flow. Second operand 12 states and 231 transitions. [2024-06-27 18:43:21,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 356 transitions, 5256 flow [2024-06-27 18:43:22,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 356 transitions, 5179 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:22,715 INFO L231 Difference]: Finished difference. Result has 378 places, 300 transitions, 4207 flow [2024-06-27 18:43:22,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4207, PETRI_PLACES=378, PETRI_TRANSITIONS=300} [2024-06-27 18:43:22,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-27 18:43:22,715 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 300 transitions, 4207 flow [2024-06-27 18:43:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:22,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:22,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:22,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:43:22,716 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 18:43:22,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1025430696, now seen corresponding path program 12 times [2024-06-27 18:43:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:22,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846154214] [2024-06-27 18:43:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:22,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:23,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:23,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846154214] [2024-06-27 18:43:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846154214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:23,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:23,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:23,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070375400] [2024-06-27 18:43:23,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:23,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:23,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:23,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:23,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:23,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:23,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 300 transitions, 4207 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 18:43:23,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:23,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:23,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:24,743 INFO L124 PetriNetUnfolderBase]: 2577/4981 cut-off events. [2024-06-27 18:43:24,743 INFO L125 PetriNetUnfolderBase]: For 147427/147516 co-relation queries the response was YES. [2024-06-27 18:43:24,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30842 conditions, 4981 events. 2577/4981 cut-off events. For 147427/147516 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 39147 event pairs, 555 based on Foata normal form. 62/4962 useless extension candidates. Maximal degree in co-relation 30665. Up to 3807 conditions per place. [2024-06-27 18:43:24,812 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 274 selfloop transitions, 65 changer transitions 0/350 dead transitions. [2024-06-27 18:43:24,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 350 transitions, 5223 flow [2024-06-27 18:43:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 18:43:24,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:43:24,813 INFO L175 Difference]: Start difference. First operand has 378 places, 300 transitions, 4207 flow. Second operand 11 states and 220 transitions. [2024-06-27 18:43:24,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 350 transitions, 5223 flow [2024-06-27 18:43:25,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 350 transitions, 5043 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:25,825 INFO L231 Difference]: Finished difference. Result has 380 places, 306 transitions, 4255 flow [2024-06-27 18:43:25,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4255, PETRI_PLACES=380, PETRI_TRANSITIONS=306} [2024-06-27 18:43:25,825 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-27 18:43:25,825 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 306 transitions, 4255 flow [2024-06-27 18:43:25,825 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 18:43:25,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:25,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:25,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:43:25,825 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 18:43:25,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash 89426392, now seen corresponding path program 13 times [2024-06-27 18:43:25,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:25,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406003868] [2024-06-27 18:43:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:26,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:26,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406003868] [2024-06-27 18:43:26,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406003868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:26,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:26,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:26,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997496920] [2024-06-27 18:43:26,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:26,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:26,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:26,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:26,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 306 transitions, 4255 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 18:43:26,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:26,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:26,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:27,893 INFO L124 PetriNetUnfolderBase]: 2628/5064 cut-off events. [2024-06-27 18:43:27,893 INFO L125 PetriNetUnfolderBase]: For 158392/158481 co-relation queries the response was YES. [2024-06-27 18:43:27,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31767 conditions, 5064 events. 2628/5064 cut-off events. For 158392/158481 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 39883 event pairs, 561 based on Foata normal form. 62/5045 useless extension candidates. Maximal degree in co-relation 31589. Up to 3743 conditions per place. [2024-06-27 18:43:27,959 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 276 selfloop transitions, 67 changer transitions 0/354 dead transitions. [2024-06-27 18:43:27,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 354 transitions, 5431 flow [2024-06-27 18:43:27,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-27 18:43:27,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287081339712919 [2024-06-27 18:43:27,960 INFO L175 Difference]: Start difference. First operand has 380 places, 306 transitions, 4255 flow. Second operand 11 states and 221 transitions. [2024-06-27 18:43:27,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 354 transitions, 5431 flow [2024-06-27 18:43:28,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 354 transitions, 5334 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:28,913 INFO L231 Difference]: Finished difference. Result has 387 places, 308 transitions, 4350 flow [2024-06-27 18:43:28,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4158, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4350, PETRI_PLACES=387, PETRI_TRANSITIONS=308} [2024-06-27 18:43:28,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 345 predicate places. [2024-06-27 18:43:28,914 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 308 transitions, 4350 flow [2024-06-27 18:43:28,914 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 18:43:28,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:28,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:28,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:43:28,914 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 18:43:28,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1083220496, now seen corresponding path program 14 times [2024-06-27 18:43:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564154600] [2024-06-27 18:43:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:29,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:29,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564154600] [2024-06-27 18:43:29,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564154600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:29,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:29,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377305859] [2024-06-27 18:43:29,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:29,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:29,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 308 transitions, 4350 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 18:43:29,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:29,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:29,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:30,910 INFO L124 PetriNetUnfolderBase]: 2625/5071 cut-off events. [2024-06-27 18:43:30,910 INFO L125 PetriNetUnfolderBase]: For 150452/150541 co-relation queries the response was YES. [2024-06-27 18:43:30,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31792 conditions, 5071 events. 2625/5071 cut-off events. For 150452/150541 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 40028 event pairs, 579 based on Foata normal form. 62/5052 useless extension candidates. Maximal degree in co-relation 31612. Up to 3885 conditions per place. [2024-06-27 18:43:30,982 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 275 selfloop transitions, 66 changer transitions 0/352 dead transitions. [2024-06-27 18:43:30,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 352 transitions, 5300 flow [2024-06-27 18:43:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-27 18:43:30,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191387559808612 [2024-06-27 18:43:30,985 INFO L175 Difference]: Start difference. First operand has 387 places, 308 transitions, 4350 flow. Second operand 11 states and 217 transitions. [2024-06-27 18:43:30,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 352 transitions, 5300 flow [2024-06-27 18:43:32,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 352 transitions, 5154 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:32,045 INFO L231 Difference]: Finished difference. Result has 391 places, 309 transitions, 4368 flow [2024-06-27 18:43:32,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4368, PETRI_PLACES=391, PETRI_TRANSITIONS=309} [2024-06-27 18:43:32,046 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-27 18:43:32,046 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 309 transitions, 4368 flow [2024-06-27 18:43:32,046 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 18:43:32,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:32,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:32,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:43:32,046 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 18:43:32,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:32,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1751966224, now seen corresponding path program 15 times [2024-06-27 18:43:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:32,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532469841] [2024-06-27 18:43:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:32,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:32,773 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 18:43:32,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:32,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532469841] [2024-06-27 18:43:32,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532469841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:32,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:32,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912049990] [2024-06-27 18:43:32,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:32,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:32,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:32,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:32,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:32,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:32,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 309 transitions, 4368 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 18:43:32,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:32,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:32,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:34,191 INFO L124 PetriNetUnfolderBase]: 2637/5111 cut-off events. [2024-06-27 18:43:34,191 INFO L125 PetriNetUnfolderBase]: For 147084/147173 co-relation queries the response was YES. [2024-06-27 18:43:34,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31792 conditions, 5111 events. 2637/5111 cut-off events. For 147084/147173 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 40470 event pairs, 591 based on Foata normal form. 62/5092 useless extension candidates. Maximal degree in co-relation 31610. Up to 3911 conditions per place. [2024-06-27 18:43:34,265 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 273 selfloop transitions, 74 changer transitions 0/358 dead transitions. [2024-06-27 18:43:34,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 358 transitions, 5420 flow [2024-06-27 18:43:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 18:43:34,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-06-27 18:43:34,266 INFO L175 Difference]: Start difference. First operand has 391 places, 309 transitions, 4368 flow. Second operand 11 states and 216 transitions. [2024-06-27 18:43:34,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 358 transitions, 5420 flow [2024-06-27 18:43:35,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 358 transitions, 5229 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:35,265 INFO L231 Difference]: Finished difference. Result has 394 places, 316 transitions, 4524 flow [2024-06-27 18:43:35,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4188, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4524, PETRI_PLACES=394, PETRI_TRANSITIONS=316} [2024-06-27 18:43:35,266 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 352 predicate places. [2024-06-27 18:43:35,266 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 316 transitions, 4524 flow [2024-06-27 18:43:35,266 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 18:43:35,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:35,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:35,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:43:35,267 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 18:43:35,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1985040912, now seen corresponding path program 16 times [2024-06-27 18:43:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743567242] [2024-06-27 18:43:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:35,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:35,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:35,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743567242] [2024-06-27 18:43:35,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743567242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:35,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:35,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:35,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100306646] [2024-06-27 18:43:35,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:35,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:35,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:35,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:35,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:36,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:36,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 316 transitions, 4524 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 18:43:36,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:36,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:36,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:37,244 INFO L124 PetriNetUnfolderBase]: 2657/5027 cut-off events. [2024-06-27 18:43:37,244 INFO L125 PetriNetUnfolderBase]: For 153029/153108 co-relation queries the response was YES. [2024-06-27 18:43:37,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31840 conditions, 5027 events. 2657/5027 cut-off events. For 153029/153108 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 39052 event pairs, 542 based on Foata normal form. 48/4984 useless extension candidates. Maximal degree in co-relation 31657. Up to 3919 conditions per place. [2024-06-27 18:43:37,319 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 271 selfloop transitions, 78 changer transitions 0/360 dead transitions. [2024-06-27 18:43:37,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 360 transitions, 5515 flow [2024-06-27 18:43:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:43:37,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507177033492823 [2024-06-27 18:43:37,320 INFO L175 Difference]: Start difference. First operand has 394 places, 316 transitions, 4524 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:43:37,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 360 transitions, 5515 flow [2024-06-27 18:43:38,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 360 transitions, 5348 flow, removed 65 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:38,428 INFO L231 Difference]: Finished difference. Result has 402 places, 319 transitions, 4643 flow [2024-06-27 18:43:38,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4643, PETRI_PLACES=402, PETRI_TRANSITIONS=319} [2024-06-27 18:43:38,428 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-27 18:43:38,428 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 319 transitions, 4643 flow [2024-06-27 18:43:38,429 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 18:43:38,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:38,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:38,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:43:38,429 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 18:43:38,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:38,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1745537134, now seen corresponding path program 17 times [2024-06-27 18:43:38,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:38,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474438867] [2024-06-27 18:43:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:38,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:39,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474438867] [2024-06-27 18:43:39,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474438867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:39,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:39,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:39,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945668425] [2024-06-27 18:43:39,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:39,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:39,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:39,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:39,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:39,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:39,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 319 transitions, 4643 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 18:43:39,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:39,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:39,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:40,523 INFO L124 PetriNetUnfolderBase]: 2673/5167 cut-off events. [2024-06-27 18:43:40,524 INFO L125 PetriNetUnfolderBase]: For 149468/149557 co-relation queries the response was YES. [2024-06-27 18:43:40,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32181 conditions, 5167 events. 2673/5167 cut-off events. For 149468/149557 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 40897 event pairs, 585 based on Foata normal form. 62/5148 useless extension candidates. Maximal degree in co-relation 31995. Up to 3903 conditions per place. [2024-06-27 18:43:40,596 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 277 selfloop transitions, 76 changer transitions 0/364 dead transitions. [2024-06-27 18:43:40,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 364 transitions, 5571 flow [2024-06-27 18:43:40,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:40,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-27 18:43:40,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239234449760766 [2024-06-27 18:43:40,597 INFO L175 Difference]: Start difference. First operand has 402 places, 319 transitions, 4643 flow. Second operand 11 states and 219 transitions. [2024-06-27 18:43:40,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 364 transitions, 5571 flow [2024-06-27 18:43:41,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 364 transitions, 5434 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:41,635 INFO L231 Difference]: Finished difference. Result has 408 places, 320 transitions, 4694 flow [2024-06-27 18:43:41,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4506, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4694, PETRI_PLACES=408, PETRI_TRANSITIONS=320} [2024-06-27 18:43:41,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 366 predicate places. [2024-06-27 18:43:41,635 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 320 transitions, 4694 flow [2024-06-27 18:43:41,635 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 18:43:41,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:41,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:41,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:43:41,635 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 18:43:41,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:41,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1574834704, now seen corresponding path program 18 times [2024-06-27 18:43:41,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:41,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641077158] [2024-06-27 18:43:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:42,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:42,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641077158] [2024-06-27 18:43:42,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641077158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:42,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:42,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515517500] [2024-06-27 18:43:42,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:42,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:42,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:42,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:42,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 320 transitions, 4694 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 18:43:42,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:42,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:42,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:43,887 INFO L124 PetriNetUnfolderBase]: 2693/5149 cut-off events. [2024-06-27 18:43:43,887 INFO L125 PetriNetUnfolderBase]: For 150360/150449 co-relation queries the response was YES. [2024-06-27 18:43:43,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32343 conditions, 5149 events. 2693/5149 cut-off events. For 150360/150449 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 40448 event pairs, 579 based on Foata normal form. 62/5130 useless extension candidates. Maximal degree in co-relation 32155. Up to 3357 conditions per place. [2024-06-27 18:43:43,952 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 271 selfloop transitions, 85 changer transitions 0/367 dead transitions. [2024-06-27 18:43:43,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 367 transitions, 5858 flow [2024-06-27 18:43:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-27 18:43:43,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215311004784688 [2024-06-27 18:43:43,953 INFO L175 Difference]: Start difference. First operand has 408 places, 320 transitions, 4694 flow. Second operand 11 states and 218 transitions. [2024-06-27 18:43:43,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 367 transitions, 5858 flow [2024-06-27 18:43:45,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 367 transitions, 5680 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:45,034 INFO L231 Difference]: Finished difference. Result has 410 places, 322 transitions, 4756 flow [2024-06-27 18:43:45,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4516, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4756, PETRI_PLACES=410, PETRI_TRANSITIONS=322} [2024-06-27 18:43:45,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-27 18:43:45,035 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 322 transitions, 4756 flow [2024-06-27 18:43:45,035 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 18:43:45,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:45,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:45,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:43:45,035 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 18:43:45,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1874851218, now seen corresponding path program 19 times [2024-06-27 18:43:45,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:45,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731004546] [2024-06-27 18:43:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:45,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731004546] [2024-06-27 18:43:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731004546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:45,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:45,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:45,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345702071] [2024-06-27 18:43:45,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:45,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:45,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:45,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:45,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:45,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:45,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 322 transitions, 4756 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 18:43:45,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:45,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:45,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:47,051 INFO L124 PetriNetUnfolderBase]: 2736/5206 cut-off events. [2024-06-27 18:43:47,051 INFO L125 PetriNetUnfolderBase]: For 152913/152992 co-relation queries the response was YES. [2024-06-27 18:43:47,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32981 conditions, 5206 events. 2736/5206 cut-off events. For 152913/152992 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 40886 event pairs, 580 based on Foata normal form. 48/5165 useless extension candidates. Maximal degree in co-relation 32792. Up to 4079 conditions per place. [2024-06-27 18:43:47,126 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 284 selfloop transitions, 73 changer transitions 0/368 dead transitions. [2024-06-27 18:43:47,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 368 transitions, 5753 flow [2024-06-27 18:43:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 18:43:47,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-06-27 18:43:47,127 INFO L175 Difference]: Start difference. First operand has 410 places, 322 transitions, 4756 flow. Second operand 11 states and 216 transitions. [2024-06-27 18:43:47,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 368 transitions, 5753 flow [2024-06-27 18:43:48,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 368 transitions, 5593 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:48,387 INFO L231 Difference]: Finished difference. Result has 414 places, 326 transitions, 4847 flow [2024-06-27 18:43:48,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4847, PETRI_PLACES=414, PETRI_TRANSITIONS=326} [2024-06-27 18:43:48,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 372 predicate places. [2024-06-27 18:43:48,387 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 326 transitions, 4847 flow [2024-06-27 18:43:48,387 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 18:43:48,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:48,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:48,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:43:48,387 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 18:43:48,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1236432436, now seen corresponding path program 20 times [2024-06-27 18:43:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:48,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834035795] [2024-06-27 18:43:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:48,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:49,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:49,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834035795] [2024-06-27 18:43:49,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834035795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:49,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:49,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550259753] [2024-06-27 18:43:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:49,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:49,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:49,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:49,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 326 transitions, 4847 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 18:43:49,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:49,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:49,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:50,454 INFO L124 PetriNetUnfolderBase]: 2748/5240 cut-off events. [2024-06-27 18:43:50,454 INFO L125 PetriNetUnfolderBase]: For 148083/148158 co-relation queries the response was YES. [2024-06-27 18:43:50,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32986 conditions, 5240 events. 2748/5240 cut-off events. For 148083/148158 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41185 event pairs, 602 based on Foata normal form. 46/5197 useless extension candidates. Maximal degree in co-relation 32795. Up to 4099 conditions per place. [2024-06-27 18:43:50,532 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 283 selfloop transitions, 76 changer transitions 0/370 dead transitions. [2024-06-27 18:43:50,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 370 transitions, 5801 flow [2024-06-27 18:43:50,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:43:50,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-06-27 18:43:50,533 INFO L175 Difference]: Start difference. First operand has 414 places, 326 transitions, 4847 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:43:50,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 370 transitions, 5801 flow [2024-06-27 18:43:51,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 370 transitions, 5673 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:51,762 INFO L231 Difference]: Finished difference. Result has 419 places, 328 transitions, 4929 flow [2024-06-27 18:43:51,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4719, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4929, PETRI_PLACES=419, PETRI_TRANSITIONS=328} [2024-06-27 18:43:51,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-27 18:43:51,762 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 328 transitions, 4929 flow [2024-06-27 18:43:51,762 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 18:43:51,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:51,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:43:51,763 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 18:43:51,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:51,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1242861526, now seen corresponding path program 21 times [2024-06-27 18:43:51,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:51,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522870067] [2024-06-27 18:43:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:51,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:52,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:52,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522870067] [2024-06-27 18:43:52,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522870067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:52,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:52,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:52,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276478348] [2024-06-27 18:43:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:52,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:52,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:52,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 328 transitions, 4929 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 18:43:52,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:52,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:52,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:54,057 INFO L124 PetriNetUnfolderBase]: 2764/5244 cut-off events. [2024-06-27 18:43:54,058 INFO L125 PetriNetUnfolderBase]: For 138705/138780 co-relation queries the response was YES. [2024-06-27 18:43:54,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33031 conditions, 5244 events. 2764/5244 cut-off events. For 138705/138780 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 41014 event pairs, 589 based on Foata normal form. 46/5200 useless extension candidates. Maximal degree in co-relation 32839. Up to 3877 conditions per place. [2024-06-27 18:43:54,133 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 279 selfloop transitions, 81 changer transitions 0/371 dead transitions. [2024-06-27 18:43:54,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 371 transitions, 5835 flow [2024-06-27 18:43:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:43:54,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-06-27 18:43:54,134 INFO L175 Difference]: Start difference. First operand has 419 places, 328 transitions, 4929 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:43:54,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 371 transitions, 5835 flow [2024-06-27 18:43:55,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 371 transitions, 5668 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:55,289 INFO L231 Difference]: Finished difference. Result has 424 places, 328 transitions, 4928 flow [2024-06-27 18:43:55,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4762, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4928, PETRI_PLACES=424, PETRI_TRANSITIONS=328} [2024-06-27 18:43:55,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-27 18:43:55,290 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 328 transitions, 4928 flow [2024-06-27 18:43:55,290 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 18:43:55,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:55,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:55,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:43:55,290 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 18:43:55,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash 376263942, now seen corresponding path program 4 times [2024-06-27 18:43:55,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:55,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959478016] [2024-06-27 18:43:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:55,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:56,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:56,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:56,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959478016] [2024-06-27 18:43:56,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959478016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:56,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:56,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:43:56,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596074574] [2024-06-27 18:43:56,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:56,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:43:56,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:56,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:43:56,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:43:56,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:43:56,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 328 transitions, 4928 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:56,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:56,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:43:56,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:57,821 INFO L124 PetriNetUnfolderBase]: 2865/5440 cut-off events. [2024-06-27 18:43:57,822 INFO L125 PetriNetUnfolderBase]: For 201877/201952 co-relation queries the response was YES. [2024-06-27 18:43:57,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35247 conditions, 5440 events. 2865/5440 cut-off events. For 201877/201952 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 43017 event pairs, 628 based on Foata normal form. 50/5398 useless extension candidates. Maximal degree in co-relation 35053. Up to 3968 conditions per place. [2024-06-27 18:43:57,902 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 289 selfloop transitions, 81 changer transitions 0/381 dead transitions. [2024-06-27 18:43:57,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 381 transitions, 6214 flow [2024-06-27 18:43:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:43:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:43:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 237 transitions. [2024-06-27 18:43:57,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-27 18:43:57,903 INFO L175 Difference]: Start difference. First operand has 424 places, 328 transitions, 4928 flow. Second operand 12 states and 237 transitions. [2024-06-27 18:43:57,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 381 transitions, 6214 flow [2024-06-27 18:43:59,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 381 transitions, 5736 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-27 18:43:59,202 INFO L231 Difference]: Finished difference. Result has 421 places, 328 transitions, 4619 flow [2024-06-27 18:43:59,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4454, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4619, PETRI_PLACES=421, PETRI_TRANSITIONS=328} [2024-06-27 18:43:59,203 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2024-06-27 18:43:59,203 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 328 transitions, 4619 flow [2024-06-27 18:43:59,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:59,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:59,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:59,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:43:59,203 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 18:43:59,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:59,204 INFO L85 PathProgramCache]: Analyzing trace with hash 748181520, now seen corresponding path program 5 times [2024-06-27 18:43:59,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:59,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740777809] [2024-06-27 18:43:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:59,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:00,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:00,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740777809] [2024-06-27 18:44:00,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740777809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:00,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:00,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519082210] [2024-06-27 18:44:00,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:00,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:00,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:00,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:00,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:00,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:00,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 328 transitions, 4619 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:00,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:00,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:00,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:01,828 INFO L124 PetriNetUnfolderBase]: 3007/5823 cut-off events. [2024-06-27 18:44:01,828 INFO L125 PetriNetUnfolderBase]: For 255808/255883 co-relation queries the response was YES. [2024-06-27 18:44:01,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36363 conditions, 5823 events. 3007/5823 cut-off events. For 255808/255883 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 47329 event pairs, 857 based on Foata normal form. 50/5784 useless extension candidates. Maximal degree in co-relation 36173. Up to 4706 conditions per place. [2024-06-27 18:44:01,906 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 336 selfloop transitions, 35 changer transitions 0/382 dead transitions. [2024-06-27 18:44:01,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 382 transitions, 6013 flow [2024-06-27 18:44:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-27 18:44:01,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2024-06-27 18:44:01,907 INFO L175 Difference]: Start difference. First operand has 421 places, 328 transitions, 4619 flow. Second operand 12 states and 226 transitions. [2024-06-27 18:44:01,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 382 transitions, 6013 flow [2024-06-27 18:44:03,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 382 transitions, 5852 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:03,320 INFO L231 Difference]: Finished difference. Result has 424 places, 329 transitions, 4598 flow [2024-06-27 18:44:03,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4458, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4598, PETRI_PLACES=424, PETRI_TRANSITIONS=329} [2024-06-27 18:44:03,321 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-27 18:44:03,321 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 329 transitions, 4598 flow [2024-06-27 18:44:03,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:03,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:03,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:03,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:44:03,321 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 18:44:03,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:03,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2014461106, now seen corresponding path program 6 times [2024-06-27 18:44:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:03,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124888171] [2024-06-27 18:44:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:03,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:04,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:04,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124888171] [2024-06-27 18:44:04,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124888171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:04,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:04,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:04,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358892744] [2024-06-27 18:44:04,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:04,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:04,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:04,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:04,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 329 transitions, 4598 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:04,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:04,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:04,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:06,125 INFO L124 PetriNetUnfolderBase]: 3013/5742 cut-off events. [2024-06-27 18:44:06,125 INFO L125 PetriNetUnfolderBase]: For 229944/230019 co-relation queries the response was YES. [2024-06-27 18:44:06,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35092 conditions, 5742 events. 3013/5742 cut-off events. For 229944/230019 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 46135 event pairs, 692 based on Foata normal form. 52/5698 useless extension candidates. Maximal degree in co-relation 34900. Up to 4510 conditions per place. [2024-06-27 18:44:06,202 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 289 selfloop transitions, 83 changer transitions 0/383 dead transitions. [2024-06-27 18:44:06,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 383 transitions, 5648 flow [2024-06-27 18:44:06,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:44:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:44:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 252 transitions. [2024-06-27 18:44:06,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101214574898786 [2024-06-27 18:44:06,203 INFO L175 Difference]: Start difference. First operand has 424 places, 329 transitions, 4598 flow. Second operand 13 states and 252 transitions. [2024-06-27 18:44:06,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 383 transitions, 5648 flow [2024-06-27 18:44:07,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 383 transitions, 5564 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:07,652 INFO L231 Difference]: Finished difference. Result has 428 places, 330 transitions, 4692 flow [2024-06-27 18:44:07,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4692, PETRI_PLACES=428, PETRI_TRANSITIONS=330} [2024-06-27 18:44:07,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-06-27 18:44:07,653 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 330 transitions, 4692 flow [2024-06-27 18:44:07,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:07,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:07,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:07,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:44:07,653 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 18:44:07,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:07,654 INFO L85 PathProgramCache]: Analyzing trace with hash 413131994, now seen corresponding path program 7 times [2024-06-27 18:44:07,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:07,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65688667] [2024-06-27 18:44:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:08,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65688667] [2024-06-27 18:44:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65688667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:08,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:08,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:08,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258495027] [2024-06-27 18:44:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:08,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:08,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:08,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:08,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 330 transitions, 4692 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:08,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:08,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:08,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:10,318 INFO L124 PetriNetUnfolderBase]: 3109/5975 cut-off events. [2024-06-27 18:44:10,318 INFO L125 PetriNetUnfolderBase]: For 268345/268424 co-relation queries the response was YES. [2024-06-27 18:44:10,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37515 conditions, 5975 events. 3109/5975 cut-off events. For 268345/268424 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 48764 event pairs, 720 based on Foata normal form. 58/5940 useless extension candidates. Maximal degree in co-relation 37322. Up to 4374 conditions per place. [2024-06-27 18:44:10,413 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 298 selfloop transitions, 76 changer transitions 0/385 dead transitions. [2024-06-27 18:44:10,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 385 transitions, 6000 flow [2024-06-27 18:44:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-06-27 18:44:10,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241228070175439 [2024-06-27 18:44:10,414 INFO L175 Difference]: Start difference. First operand has 428 places, 330 transitions, 4692 flow. Second operand 12 states and 239 transitions. [2024-06-27 18:44:10,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 385 transitions, 6000 flow [2024-06-27 18:44:12,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 385 transitions, 5838 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:44:12,264 INFO L231 Difference]: Finished difference. Result has 430 places, 332 transitions, 4706 flow [2024-06-27 18:44:12,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4706, PETRI_PLACES=430, PETRI_TRANSITIONS=332} [2024-06-27 18:44:12,265 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2024-06-27 18:44:12,265 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 332 transitions, 4706 flow [2024-06-27 18:44:12,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:12,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:12,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:12,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:44:12,265 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 18:44:12,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1233592990, now seen corresponding path program 8 times [2024-06-27 18:44:12,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:12,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809319654] [2024-06-27 18:44:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:12,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:13,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809319654] [2024-06-27 18:44:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809319654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:13,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:13,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:13,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002617284] [2024-06-27 18:44:13,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:13,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:13,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:13,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:13,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:13,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:13,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 332 transitions, 4706 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:13,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:13,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:13,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:14,882 INFO L124 PetriNetUnfolderBase]: 3116/6085 cut-off events. [2024-06-27 18:44:14,882 INFO L125 PetriNetUnfolderBase]: For 244480/244555 co-relation queries the response was YES. [2024-06-27 18:44:14,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37152 conditions, 6085 events. 3116/6085 cut-off events. For 244480/244555 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 50348 event pairs, 914 based on Foata normal form. 52/6048 useless extension candidates. Maximal degree in co-relation 36957. Up to 5179 conditions per place. [2024-06-27 18:44:14,979 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 335 selfloop transitions, 35 changer transitions 0/381 dead transitions. [2024-06-27 18:44:14,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 381 transitions, 5782 flow [2024-06-27 18:44:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 18:44:14,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2024-06-27 18:44:14,980 INFO L175 Difference]: Start difference. First operand has 430 places, 332 transitions, 4706 flow. Second operand 12 states and 223 transitions. [2024-06-27 18:44:14,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 381 transitions, 5782 flow [2024-06-27 18:44:16,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 381 transitions, 5628 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:16,879 INFO L231 Difference]: Finished difference. Result has 433 places, 332 transitions, 4626 flow [2024-06-27 18:44:16,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4552, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4626, PETRI_PLACES=433, PETRI_TRANSITIONS=332} [2024-06-27 18:44:16,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-27 18:44:16,879 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 332 transitions, 4626 flow [2024-06-27 18:44:16,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:16,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:16,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:16,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:44:16,879 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 18:44:16,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash 723599244, now seen corresponding path program 9 times [2024-06-27 18:44:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869995941] [2024-06-27 18:44:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869995941] [2024-06-27 18:44:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869995941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:17,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:17,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540356672] [2024-06-27 18:44:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:17,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:17,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:18,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:18,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 332 transitions, 4626 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:18,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:18,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:18,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:19,698 INFO L124 PetriNetUnfolderBase]: 3164/6169 cut-off events. [2024-06-27 18:44:19,698 INFO L125 PetriNetUnfolderBase]: For 240148/240223 co-relation queries the response was YES. [2024-06-27 18:44:19,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37680 conditions, 6169 events. 3164/6169 cut-off events. For 240148/240223 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 51097 event pairs, 910 based on Foata normal form. 50/6126 useless extension candidates. Maximal degree in co-relation 37484. Up to 5084 conditions per place. [2024-06-27 18:44:19,794 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 337 selfloop transitions, 43 changer transitions 0/391 dead transitions. [2024-06-27 18:44:19,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 391 transitions, 6074 flow [2024-06-27 18:44:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:44:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:44:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 246 transitions. [2024-06-27 18:44:19,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979757085020243 [2024-06-27 18:44:19,795 INFO L175 Difference]: Start difference. First operand has 433 places, 332 transitions, 4626 flow. Second operand 13 states and 246 transitions. [2024-06-27 18:44:19,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 391 transitions, 6074 flow [2024-06-27 18:44:21,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 391 transitions, 6006 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:21,295 INFO L231 Difference]: Finished difference. Result has 437 places, 333 transitions, 4714 flow [2024-06-27 18:44:21,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4714, PETRI_PLACES=437, PETRI_TRANSITIONS=333} [2024-06-27 18:44:21,296 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-27 18:44:21,296 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 333 transitions, 4714 flow [2024-06-27 18:44:21,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:21,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:21,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:21,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:44:21,296 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 18:44:21,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1091798444, now seen corresponding path program 10 times [2024-06-27 18:44:21,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:21,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892484675] [2024-06-27 18:44:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:21,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:22,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892484675] [2024-06-27 18:44:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892484675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:22,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:22,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:22,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167039509] [2024-06-27 18:44:22,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:22,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:22,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:22,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:22,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:22,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:22,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 333 transitions, 4714 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:22,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:22,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:22,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:24,088 INFO L124 PetriNetUnfolderBase]: 3224/6333 cut-off events. [2024-06-27 18:44:24,088 INFO L125 PetriNetUnfolderBase]: For 259480/259567 co-relation queries the response was YES. [2024-06-27 18:44:24,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38457 conditions, 6333 events. 3224/6333 cut-off events. For 259480/259567 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 53241 event pairs, 827 based on Foata normal form. 72/6318 useless extension candidates. Maximal degree in co-relation 38259. Up to 4900 conditions per place. [2024-06-27 18:44:24,188 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 299 selfloop transitions, 78 changer transitions 0/388 dead transitions. [2024-06-27 18:44:24,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 388 transitions, 5780 flow [2024-06-27 18:44:24,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:44:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:44:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 255 transitions. [2024-06-27 18:44:24,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161943319838057 [2024-06-27 18:44:24,189 INFO L175 Difference]: Start difference. First operand has 437 places, 333 transitions, 4714 flow. Second operand 13 states and 255 transitions. [2024-06-27 18:44:24,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 388 transitions, 5780 flow [2024-06-27 18:44:26,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 388 transitions, 5676 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:26,051 INFO L231 Difference]: Finished difference. Result has 440 places, 334 transitions, 4778 flow [2024-06-27 18:44:26,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4610, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4778, PETRI_PLACES=440, PETRI_TRANSITIONS=334} [2024-06-27 18:44:26,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 398 predicate places. [2024-06-27 18:44:26,052 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 334 transitions, 4778 flow [2024-06-27 18:44:26,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:26,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:26,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:26,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:44:26,052 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 18:44:26,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:26,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1379041964, now seen corresponding path program 11 times [2024-06-27 18:44:26,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:26,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724618481] [2024-06-27 18:44:26,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:26,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:27,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724618481] [2024-06-27 18:44:27,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724618481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:27,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:27,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:27,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834950518] [2024-06-27 18:44:27,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:27,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:27,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:27,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:27,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:27,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:27,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 334 transitions, 4778 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:27,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:27,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:27,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:28,867 INFO L124 PetriNetUnfolderBase]: 3261/6383 cut-off events. [2024-06-27 18:44:28,867 INFO L125 PetriNetUnfolderBase]: For 253012/253099 co-relation queries the response was YES. [2024-06-27 18:44:28,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39146 conditions, 6383 events. 3261/6383 cut-off events. For 253012/253099 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 53590 event pairs, 821 based on Foata normal form. 70/6363 useless extension candidates. Maximal degree in co-relation 38947. Up to 4639 conditions per place. [2024-06-27 18:44:28,969 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 299 selfloop transitions, 76 changer transitions 0/386 dead transitions. [2024-06-27 18:44:28,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 386 transitions, 5864 flow [2024-06-27 18:44:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-06-27 18:44:28,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241228070175439 [2024-06-27 18:44:28,970 INFO L175 Difference]: Start difference. First operand has 440 places, 334 transitions, 4778 flow. Second operand 12 states and 239 transitions. [2024-06-27 18:44:28,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 386 transitions, 5864 flow [2024-06-27 18:44:30,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 386 transitions, 5712 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:44:30,778 INFO L231 Difference]: Finished difference. Result has 441 places, 334 transitions, 4781 flow [2024-06-27 18:44:30,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4781, PETRI_PLACES=441, PETRI_TRANSITIONS=334} [2024-06-27 18:44:30,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-27 18:44:30,778 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 334 transitions, 4781 flow [2024-06-27 18:44:30,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:30,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:30,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:30,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:44:30,779 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 18:44:30,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash -870096050, now seen corresponding path program 12 times [2024-06-27 18:44:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:30,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880809060] [2024-06-27 18:44:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:31,703 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 18:44:31,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:31,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880809060] [2024-06-27 18:44:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880809060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:31,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488324544] [2024-06-27 18:44:31,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:31,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:31,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:31,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 334 transitions, 4781 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:31,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:31,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:31,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:33,582 INFO L124 PetriNetUnfolderBase]: 3258/6391 cut-off events. [2024-06-27 18:44:33,582 INFO L125 PetriNetUnfolderBase]: For 223979/224054 co-relation queries the response was YES. [2024-06-27 18:44:33,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38396 conditions, 6391 events. 3258/6391 cut-off events. For 223979/224054 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 53581 event pairs, 976 based on Foata normal form. 52/6350 useless extension candidates. Maximal degree in co-relation 38196. Up to 5408 conditions per place. [2024-06-27 18:44:33,686 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 334 selfloop transitions, 43 changer transitions 0/388 dead transitions. [2024-06-27 18:44:33,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 388 transitions, 5897 flow [2024-06-27 18:44:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:44:33,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:44:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 242 transitions. [2024-06-27 18:44:33,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898785425101215 [2024-06-27 18:44:33,687 INFO L175 Difference]: Start difference. First operand has 441 places, 334 transitions, 4781 flow. Second operand 13 states and 242 transitions. [2024-06-27 18:44:33,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 388 transitions, 5897 flow [2024-06-27 18:44:35,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 388 transitions, 5732 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:35,052 INFO L231 Difference]: Finished difference. Result has 444 places, 334 transitions, 4706 flow [2024-06-27 18:44:35,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4616, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4706, PETRI_PLACES=444, PETRI_TRANSITIONS=334} [2024-06-27 18:44:35,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-06-27 18:44:35,052 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 334 transitions, 4706 flow [2024-06-27 18:44:35,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:35,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:35,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:35,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:44:35,053 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 18:44:35,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1579385940, now seen corresponding path program 13 times [2024-06-27 18:44:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:35,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785887636] [2024-06-27 18:44:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:36,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785887636] [2024-06-27 18:44:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785887636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:36,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:36,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:36,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91952219] [2024-06-27 18:44:36,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:36,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:36,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:36,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:36,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 334 transitions, 4706 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:36,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:36,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:36,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:38,023 INFO L124 PetriNetUnfolderBase]: 3312/6432 cut-off events. [2024-06-27 18:44:38,023 INFO L125 PetriNetUnfolderBase]: For 226184/226259 co-relation queries the response was YES. [2024-06-27 18:44:38,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38456 conditions, 6432 events. 3312/6432 cut-off events. For 226184/226259 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 53873 event pairs, 819 based on Foata normal form. 56/6391 useless extension candidates. Maximal degree in co-relation 38255. Up to 5073 conditions per place. [2024-06-27 18:44:38,127 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 300 selfloop transitions, 80 changer transitions 0/391 dead transitions. [2024-06-27 18:44:38,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 391 transitions, 5803 flow [2024-06-27 18:44:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:44:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:44:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 254 transitions. [2024-06-27 18:44:38,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141700404858299 [2024-06-27 18:44:38,128 INFO L175 Difference]: Start difference. First operand has 444 places, 334 transitions, 4706 flow. Second operand 13 states and 254 transitions. [2024-06-27 18:44:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 391 transitions, 5803 flow [2024-06-27 18:44:39,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 391 transitions, 5719 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:44:39,788 INFO L231 Difference]: Finished difference. Result has 446 places, 337 transitions, 4819 flow [2024-06-27 18:44:39,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4622, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4819, PETRI_PLACES=446, PETRI_TRANSITIONS=337} [2024-06-27 18:44:39,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-06-27 18:44:39,789 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 337 transitions, 4819 flow [2024-06-27 18:44:39,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:39,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:39,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:39,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:44:39,789 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 18:44:39,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:39,789 INFO L85 PathProgramCache]: Analyzing trace with hash -470242550, now seen corresponding path program 14 times [2024-06-27 18:44:39,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:39,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594628121] [2024-06-27 18:44:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:39,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:40,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594628121] [2024-06-27 18:44:40,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594628121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:40,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:40,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:40,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148562942] [2024-06-27 18:44:40,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:40,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:40,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:40,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:40,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:40,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:40,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 337 transitions, 4819 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:40,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:40,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:42,659 INFO L124 PetriNetUnfolderBase]: 3383/6663 cut-off events. [2024-06-27 18:44:42,659 INFO L125 PetriNetUnfolderBase]: For 210652/210727 co-relation queries the response was YES. [2024-06-27 18:44:42,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39786 conditions, 6663 events. 3383/6663 cut-off events. For 210652/210727 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 56839 event pairs, 1088 based on Foata normal form. 50/6619 useless extension candidates. Maximal degree in co-relation 39584. Up to 5015 conditions per place. [2024-06-27 18:44:42,760 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 362 selfloop transitions, 26 changer transitions 0/399 dead transitions. [2024-06-27 18:44:42,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 399 transitions, 5999 flow [2024-06-27 18:44:42,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:44:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:44:42,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 246 transitions. [2024-06-27 18:44:42,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979757085020243 [2024-06-27 18:44:42,761 INFO L175 Difference]: Start difference. First operand has 446 places, 337 transitions, 4819 flow. Second operand 13 states and 246 transitions. [2024-06-27 18:44:42,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 399 transitions, 5999 flow [2024-06-27 18:44:44,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 399 transitions, 5838 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:44,389 INFO L231 Difference]: Finished difference. Result has 450 places, 341 transitions, 4774 flow [2024-06-27 18:44:44,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4658, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4774, PETRI_PLACES=450, PETRI_TRANSITIONS=341} [2024-06-27 18:44:44,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-27 18:44:44,390 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 341 transitions, 4774 flow [2024-06-27 18:44:44,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:44,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:44,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:44,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:44:44,390 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:44,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:44,390 INFO L85 PathProgramCache]: Analyzing trace with hash 962189440, now seen corresponding path program 1 times [2024-06-27 18:44:44,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:44,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036088594] [2024-06-27 18:44:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:44,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036088594] [2024-06-27 18:44:44,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036088594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:44,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:44,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:44:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52660894] [2024-06-27 18:44:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:44:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:44,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:44:44,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:44:44,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-06-27 18:44:44,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 341 transitions, 4774 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:44,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:44,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-06-27 18:44:44,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:45,575 INFO L124 PetriNetUnfolderBase]: 2184/5415 cut-off events. [2024-06-27 18:44:45,575 INFO L125 PetriNetUnfolderBase]: For 140107/140268 co-relation queries the response was YES. [2024-06-27 18:44:45,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28772 conditions, 5415 events. 2184/5415 cut-off events. For 140107/140268 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 51434 event pairs, 270 based on Foata normal form. 389/5625 useless extension candidates. Maximal degree in co-relation 28582. Up to 2294 conditions per place. [2024-06-27 18:44:45,656 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 156 selfloop transitions, 65 changer transitions 1/311 dead transitions. [2024-06-27 18:44:45,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 311 transitions, 4414 flow [2024-06-27 18:44:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:44:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:44:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-06-27 18:44:45,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2024-06-27 18:44:45,657 INFO L175 Difference]: Start difference. First operand has 450 places, 341 transitions, 4774 flow. Second operand 4 states and 108 transitions. [2024-06-27 18:44:45,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 311 transitions, 4414 flow [2024-06-27 18:44:46,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 311 transitions, 3601 flow, removed 58 selfloop flow, removed 83 redundant places. [2024-06-27 18:44:46,413 INFO L231 Difference]: Finished difference. Result has 370 places, 260 transitions, 2999 flow [2024-06-27 18:44:46,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2999, PETRI_PLACES=370, PETRI_TRANSITIONS=260} [2024-06-27 18:44:46,413 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-27 18:44:46,413 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 260 transitions, 2999 flow [2024-06-27 18:44:46,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:46,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:46,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:46,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:44:46,414 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 18:44:46,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash 368574899, now seen corresponding path program 1 times [2024-06-27 18:44:46,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:46,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174039002] [2024-06-27 18:44:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:46,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:47,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:47,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174039002] [2024-06-27 18:44:47,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174039002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:47,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:47,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:47,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012931276] [2024-06-27 18:44:47,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:47,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:47,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:47,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:47,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:47,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:47,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 260 transitions, 2999 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:47,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:47,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:47,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:48,784 INFO L124 PetriNetUnfolderBase]: 2757/6343 cut-off events. [2024-06-27 18:44:48,785 INFO L125 PetriNetUnfolderBase]: For 166453/166465 co-relation queries the response was YES. [2024-06-27 18:44:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30131 conditions, 6343 events. 2757/6343 cut-off events. For 166453/166465 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 57869 event pairs, 1285 based on Foata normal form. 14/6284 useless extension candidates. Maximal degree in co-relation 29982. Up to 4707 conditions per place. [2024-06-27 18:44:48,872 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 289 selfloop transitions, 28 changer transitions 0/327 dead transitions. [2024-06-27 18:44:48,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 327 transitions, 4063 flow [2024-06-27 18:44:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:44:48,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:44:48,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 234 transitions. [2024-06-27 18:44:48,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 18:44:48,873 INFO L175 Difference]: Start difference. First operand has 370 places, 260 transitions, 2999 flow. Second operand 13 states and 234 transitions. [2024-06-27 18:44:48,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 327 transitions, 4063 flow [2024-06-27 18:44:49,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 327 transitions, 3835 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:49,850 INFO L231 Difference]: Finished difference. Result has 385 places, 276 transitions, 3131 flow [2024-06-27 18:44:49,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3131, PETRI_PLACES=385, PETRI_TRANSITIONS=276} [2024-06-27 18:44:49,850 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 343 predicate places. [2024-06-27 18:44:49,851 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 276 transitions, 3131 flow [2024-06-27 18:44:49,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:49,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:49,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:49,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:44:49,851 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 18:44:49,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash -675634575, now seen corresponding path program 2 times [2024-06-27 18:44:49,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:49,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498480140] [2024-06-27 18:44:49,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:49,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:50,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:50,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498480140] [2024-06-27 18:44:50,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498480140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:50,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:50,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:50,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859643673] [2024-06-27 18:44:50,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:50,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:50,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:50,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:50,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:50,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:50,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 276 transitions, 3131 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:50,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:50,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:50,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:52,237 INFO L124 PetriNetUnfolderBase]: 2793/6417 cut-off events. [2024-06-27 18:44:52,237 INFO L125 PetriNetUnfolderBase]: For 168188/168200 co-relation queries the response was YES. [2024-06-27 18:44:52,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30146 conditions, 6417 events. 2793/6417 cut-off events. For 168188/168200 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 58502 event pairs, 1239 based on Foata normal form. 14/6403 useless extension candidates. Maximal degree in co-relation 29992. Up to 4541 conditions per place. [2024-06-27 18:44:52,331 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 277 selfloop transitions, 36 changer transitions 0/323 dead transitions. [2024-06-27 18:44:52,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 323 transitions, 3945 flow [2024-06-27 18:44:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2024-06-27 18:44:52,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 18:44:52,332 INFO L175 Difference]: Start difference. First operand has 385 places, 276 transitions, 3131 flow. Second operand 12 states and 216 transitions. [2024-06-27 18:44:52,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 323 transitions, 3945 flow [2024-06-27 18:44:53,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 323 transitions, 3825 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:53,400 INFO L231 Difference]: Finished difference. Result has 392 places, 276 transitions, 3089 flow [2024-06-27 18:44:53,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3011, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3089, PETRI_PLACES=392, PETRI_TRANSITIONS=276} [2024-06-27 18:44:53,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-27 18:44:53,400 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 276 transitions, 3089 flow [2024-06-27 18:44:53,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:53,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:53,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:53,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:44:53,401 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 18:44:53,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash 29055983, now seen corresponding path program 3 times [2024-06-27 18:44:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812034301] [2024-06-27 18:44:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:54,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:54,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812034301] [2024-06-27 18:44:54,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812034301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:54,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:54,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:54,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345895482] [2024-06-27 18:44:54,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:54,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:54,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:54,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:54,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:54,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:54,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 276 transitions, 3089 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:54,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:54,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:54,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:56,247 INFO L124 PetriNetUnfolderBase]: 2829/6491 cut-off events. [2024-06-27 18:44:56,247 INFO L125 PetriNetUnfolderBase]: For 170078/170090 co-relation queries the response was YES. [2024-06-27 18:44:56,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30497 conditions, 6491 events. 2829/6491 cut-off events. For 170078/170090 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 59446 event pairs, 1378 based on Foata normal form. 14/6432 useless extension candidates. Maximal degree in co-relation 30342. Up to 4730 conditions per place. [2024-06-27 18:44:56,333 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 283 selfloop transitions, 29 changer transitions 0/322 dead transitions. [2024-06-27 18:44:56,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 322 transitions, 3903 flow [2024-06-27 18:44:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:56,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-27 18:44:56,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 18:44:56,334 INFO L175 Difference]: Start difference. First operand has 392 places, 276 transitions, 3089 flow. Second operand 12 states and 222 transitions. [2024-06-27 18:44:56,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 322 transitions, 3903 flow [2024-06-27 18:44:57,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 322 transitions, 3371 flow, removed 44 selfloop flow, removed 23 redundant places. [2024-06-27 18:44:57,326 INFO L231 Difference]: Finished difference. Result has 381 places, 276 transitions, 2618 flow [2024-06-27 18:44:57,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2618, PETRI_PLACES=381, PETRI_TRANSITIONS=276} [2024-06-27 18:44:57,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-27 18:44:57,326 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 276 transitions, 2618 flow [2024-06-27 18:44:57,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:57,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:57,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:57,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:44:57,327 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 18:44:57,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:57,327 INFO L85 PathProgramCache]: Analyzing trace with hash -707674447, now seen corresponding path program 4 times [2024-06-27 18:44:57,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:57,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390657499] [2024-06-27 18:44:57,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:57,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:58,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:58,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390657499] [2024-06-27 18:44:58,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390657499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:58,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:58,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:58,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846627390] [2024-06-27 18:44:58,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:58,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:58,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:58,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:58,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:58,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:44:58,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 276 transitions, 2618 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:58,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:58,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:44:58,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:59,922 INFO L124 PetriNetUnfolderBase]: 2865/6574 cut-off events. [2024-06-27 18:44:59,922 INFO L125 PetriNetUnfolderBase]: For 168986/168998 co-relation queries the response was YES. [2024-06-27 18:44:59,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29199 conditions, 6574 events. 2865/6574 cut-off events. For 168986/168998 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 60407 event pairs, 1433 based on Foata normal form. 14/6510 useless extension candidates. Maximal degree in co-relation 29057. Up to 4968 conditions per place. [2024-06-27 18:44:59,991 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 277 selfloop transitions, 28 changer transitions 0/315 dead transitions. [2024-06-27 18:44:59,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 315 transitions, 3396 flow [2024-06-27 18:44:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-06-27 18:44:59,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2024-06-27 18:44:59,992 INFO L175 Difference]: Start difference. First operand has 381 places, 276 transitions, 2618 flow. Second operand 12 states and 213 transitions. [2024-06-27 18:44:59,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 315 transitions, 3396 flow [2024-06-27 18:45:01,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 315 transitions, 3283 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 18:45:01,008 INFO L231 Difference]: Finished difference. Result has 381 places, 276 transitions, 2564 flow [2024-06-27 18:45:01,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2564, PETRI_PLACES=381, PETRI_TRANSITIONS=276} [2024-06-27 18:45:01,009 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-27 18:45:01,009 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 276 transitions, 2564 flow [2024-06-27 18:45:01,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:01,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:01,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:01,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:45:01,009 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 18:45:01,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash 216485099, now seen corresponding path program 5 times [2024-06-27 18:45:01,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:01,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527079859] [2024-06-27 18:45:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:01,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:02,314 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 18:45:02,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:02,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527079859] [2024-06-27 18:45:02,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527079859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:02,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:02,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:02,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139843108] [2024-06-27 18:45:02,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:02,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:02,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:02,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:02,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:02,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 276 transitions, 2564 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:02,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:02,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:02,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:03,897 INFO L124 PetriNetUnfolderBase]: 2901/6654 cut-off events. [2024-06-27 18:45:03,898 INFO L125 PetriNetUnfolderBase]: For 161402/161414 co-relation queries the response was YES. [2024-06-27 18:45:03,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28915 conditions, 6654 events. 2901/6654 cut-off events. For 161402/161414 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 61308 event pairs, 1441 based on Foata normal form. 14/6589 useless extension candidates. Maximal degree in co-relation 28774. Up to 4970 conditions per place. [2024-06-27 18:45:03,967 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 280 selfloop transitions, 29 changer transitions 0/319 dead transitions. [2024-06-27 18:45:03,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 319 transitions, 3364 flow [2024-06-27 18:45:03,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:45:03,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-27 18:45:03,968 INFO L175 Difference]: Start difference. First operand has 381 places, 276 transitions, 2564 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:45:03,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 319 transitions, 3364 flow [2024-06-27 18:45:04,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 319 transitions, 3309 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:04,841 INFO L231 Difference]: Finished difference. Result has 383 places, 276 transitions, 2570 flow [2024-06-27 18:45:04,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2570, PETRI_PLACES=383, PETRI_TRANSITIONS=276} [2024-06-27 18:45:04,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-06-27 18:45:04,842 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 276 transitions, 2570 flow [2024-06-27 18:45:04,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:04,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:04,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:04,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:45:04,842 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 18:45:04,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:04,842 INFO L85 PathProgramCache]: Analyzing trace with hash 423138539, now seen corresponding path program 6 times [2024-06-27 18:45:04,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:04,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079358971] [2024-06-27 18:45:04,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:04,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:06,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:06,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:06,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079358971] [2024-06-27 18:45:06,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079358971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:06,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:06,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705079574] [2024-06-27 18:45:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:06,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:06,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:06,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 276 transitions, 2570 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:06,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:06,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:06,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:07,694 INFO L124 PetriNetUnfolderBase]: 2937/6760 cut-off events. [2024-06-27 18:45:07,694 INFO L125 PetriNetUnfolderBase]: For 163653/163665 co-relation queries the response was YES. [2024-06-27 18:45:07,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29355 conditions, 6760 events. 2937/6760 cut-off events. For 163653/163665 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 62576 event pairs, 1521 based on Foata normal form. 14/6691 useless extension candidates. Maximal degree in co-relation 29213. Up to 5159 conditions per place. [2024-06-27 18:45:07,766 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 274 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2024-06-27 18:45:07,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 311 transitions, 3326 flow [2024-06-27 18:45:07,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-27 18:45:07,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 18:45:07,767 INFO L175 Difference]: Start difference. First operand has 383 places, 276 transitions, 2570 flow. Second operand 12 states and 208 transitions. [2024-06-27 18:45:07,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 311 transitions, 3326 flow [2024-06-27 18:45:08,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 311 transitions, 3269 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:08,778 INFO L231 Difference]: Finished difference. Result has 385 places, 276 transitions, 2570 flow [2024-06-27 18:45:08,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2513, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2570, PETRI_PLACES=385, PETRI_TRANSITIONS=276} [2024-06-27 18:45:08,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 343 predicate places. [2024-06-27 18:45:08,779 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 276 transitions, 2570 flow [2024-06-27 18:45:08,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:08,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:08,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:45:08,779 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 18:45:08,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1586504849, now seen corresponding path program 7 times [2024-06-27 18:45:08,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342777529] [2024-06-27 18:45:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:09,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342777529] [2024-06-27 18:45:09,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342777529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:09,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:09,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:09,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192986327] [2024-06-27 18:45:09,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:09,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:10,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:10,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 276 transitions, 2570 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:10,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:10,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:10,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:11,560 INFO L124 PetriNetUnfolderBase]: 2973/6813 cut-off events. [2024-06-27 18:45:11,560 INFO L125 PetriNetUnfolderBase]: For 166026/166038 co-relation queries the response was YES. [2024-06-27 18:45:11,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29627 conditions, 6813 events. 2973/6813 cut-off events. For 166026/166038 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 63090 event pairs, 1519 based on Foata normal form. 14/6743 useless extension candidates. Maximal degree in co-relation 29484. Up to 5111 conditions per place. [2024-06-27 18:45:11,646 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 257 selfloop transitions, 46 changer transitions 0/313 dead transitions. [2024-06-27 18:45:11,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 313 transitions, 3338 flow [2024-06-27 18:45:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-27 18:45:11,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758771929824561 [2024-06-27 18:45:11,647 INFO L175 Difference]: Start difference. First operand has 385 places, 276 transitions, 2570 flow. Second operand 12 states and 217 transitions. [2024-06-27 18:45:11,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 313 transitions, 3338 flow [2024-06-27 18:45:12,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 313 transitions, 3285 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:12,869 INFO L231 Difference]: Finished difference. Result has 387 places, 276 transitions, 2612 flow [2024-06-27 18:45:12,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2612, PETRI_PLACES=387, PETRI_TRANSITIONS=276} [2024-06-27 18:45:12,869 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 345 predicate places. [2024-06-27 18:45:12,869 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 276 transitions, 2612 flow [2024-06-27 18:45:12,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:12,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:12,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:12,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:45:12,870 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 18:45:12,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash -275449629, now seen corresponding path program 8 times [2024-06-27 18:45:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:12,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292698368] [2024-06-27 18:45:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:12,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292698368] [2024-06-27 18:45:13,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292698368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:13,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:13,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:13,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237676240] [2024-06-27 18:45:13,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:13,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:13,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:13,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:13,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:14,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:14,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 276 transitions, 2612 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:14,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:14,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:14,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:15,377 INFO L124 PetriNetUnfolderBase]: 3009/6899 cut-off events. [2024-06-27 18:45:15,377 INFO L125 PetriNetUnfolderBase]: For 168666/168678 co-relation queries the response was YES. [2024-06-27 18:45:15,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30077 conditions, 6899 events. 3009/6899 cut-off events. For 168666/168678 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 64094 event pairs, 1545 based on Foata normal form. 14/6831 useless extension candidates. Maximal degree in co-relation 29933. Up to 5028 conditions per place. [2024-06-27 18:45:15,464 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 257 selfloop transitions, 50 changer transitions 0/317 dead transitions. [2024-06-27 18:45:15,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 317 transitions, 3402 flow [2024-06-27 18:45:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-27 18:45:15,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 18:45:15,465 INFO L175 Difference]: Start difference. First operand has 387 places, 276 transitions, 2612 flow. Second operand 12 states and 220 transitions. [2024-06-27 18:45:15,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 317 transitions, 3402 flow [2024-06-27 18:45:16,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 317 transitions, 3311 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:16,855 INFO L231 Difference]: Finished difference. Result has 389 places, 276 transitions, 2624 flow [2024-06-27 18:45:16,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2624, PETRI_PLACES=389, PETRI_TRANSITIONS=276} [2024-06-27 18:45:16,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-27 18:45:16,855 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 276 transitions, 2624 flow [2024-06-27 18:45:16,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:16,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:16,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:16,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:45:16,856 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 18:45:16,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1967628911, now seen corresponding path program 9 times [2024-06-27 18:45:16,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:16,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311155176] [2024-06-27 18:45:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:16,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:17,848 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 18:45:17,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:17,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311155176] [2024-06-27 18:45:17,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311155176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:17,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929899757] [2024-06-27 18:45:17,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:17,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:17,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:17,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:17,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:18,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:18,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 276 transitions, 2624 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:18,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:18,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:18,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:19,419 INFO L124 PetriNetUnfolderBase]: 3045/6979 cut-off events. [2024-06-27 18:45:19,419 INFO L125 PetriNetUnfolderBase]: For 171140/171152 co-relation queries the response was YES. [2024-06-27 18:45:19,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30499 conditions, 6979 events. 3045/6979 cut-off events. For 171140/171152 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 64960 event pairs, 1590 based on Foata normal form. 14/6906 useless extension candidates. Maximal degree in co-relation 30354. Up to 5185 conditions per place. [2024-06-27 18:45:19,509 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 262 selfloop transitions, 45 changer transitions 0/317 dead transitions. [2024-06-27 18:45:19,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 317 transitions, 3414 flow [2024-06-27 18:45:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 18:45:19,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2024-06-27 18:45:19,511 INFO L175 Difference]: Start difference. First operand has 389 places, 276 transitions, 2624 flow. Second operand 12 states and 223 transitions. [2024-06-27 18:45:19,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 317 transitions, 3414 flow [2024-06-27 18:45:20,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 317 transitions, 3315 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:20,632 INFO L231 Difference]: Finished difference. Result has 391 places, 276 transitions, 2618 flow [2024-06-27 18:45:20,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2618, PETRI_PLACES=391, PETRI_TRANSITIONS=276} [2024-06-27 18:45:20,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-27 18:45:20,632 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 276 transitions, 2618 flow [2024-06-27 18:45:20,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:20,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:20,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:20,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:45:20,633 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 18:45:20,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1024608209, now seen corresponding path program 10 times [2024-06-27 18:45:20,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:20,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107994402] [2024-06-27 18:45:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:20,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:21,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:21,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107994402] [2024-06-27 18:45:21,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107994402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:21,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:21,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:21,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38718633] [2024-06-27 18:45:21,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:21,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:21,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:21,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:21,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 276 transitions, 2618 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:21,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:21,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:21,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:23,103 INFO L124 PetriNetUnfolderBase]: 3081/7054 cut-off events. [2024-06-27 18:45:23,103 INFO L125 PetriNetUnfolderBase]: For 173589/173601 co-relation queries the response was YES. [2024-06-27 18:45:23,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30813 conditions, 7054 events. 3081/7054 cut-off events. For 173589/173601 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 65761 event pairs, 1643 based on Foata normal form. 14/6979 useless extension candidates. Maximal degree in co-relation 30667. Up to 5361 conditions per place. [2024-06-27 18:45:23,192 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 269 selfloop transitions, 34 changer transitions 0/313 dead transitions. [2024-06-27 18:45:23,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 313 transitions, 3386 flow [2024-06-27 18:45:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-27 18:45:23,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2024-06-27 18:45:23,193 INFO L175 Difference]: Start difference. First operand has 391 places, 276 transitions, 2618 flow. Second operand 12 states and 214 transitions. [2024-06-27 18:45:23,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 313 transitions, 3386 flow [2024-06-27 18:45:24,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 313 transitions, 3297 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:24,337 INFO L231 Difference]: Finished difference. Result has 393 places, 276 transitions, 2600 flow [2024-06-27 18:45:24,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2529, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2600, PETRI_PLACES=393, PETRI_TRANSITIONS=276} [2024-06-27 18:45:24,337 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 351 predicate places. [2024-06-27 18:45:24,338 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 276 transitions, 2600 flow [2024-06-27 18:45:24,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:24,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:24,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:24,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:45:24,338 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 18:45:24,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1768327121, now seen corresponding path program 11 times [2024-06-27 18:45:24,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:24,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757627213] [2024-06-27 18:45:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:24,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:25,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:25,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:25,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757627213] [2024-06-27 18:45:25,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757627213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:25,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:25,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758524233] [2024-06-27 18:45:25,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:25,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:25,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:25,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:25,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:25,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 276 transitions, 2600 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:25,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:25,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:25,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:27,037 INFO L124 PetriNetUnfolderBase]: 3117/7133 cut-off events. [2024-06-27 18:45:27,038 INFO L125 PetriNetUnfolderBase]: For 175932/175944 co-relation queries the response was YES. [2024-06-27 18:45:27,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31142 conditions, 7133 events. 3117/7133 cut-off events. For 175932/175944 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 66642 event pairs, 1663 based on Foata normal form. 14/7055 useless extension candidates. Maximal degree in co-relation 30995. Up to 5399 conditions per place. [2024-06-27 18:45:27,130 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 259 selfloop transitions, 44 changer transitions 0/313 dead transitions. [2024-06-27 18:45:27,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 313 transitions, 3368 flow [2024-06-27 18:45:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:27,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:45:27,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-27 18:45:27,131 INFO L175 Difference]: Start difference. First operand has 393 places, 276 transitions, 2600 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:45:27,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 313 transitions, 3368 flow [2024-06-27 18:45:28,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 313 transitions, 3301 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:28,400 INFO L231 Difference]: Finished difference. Result has 395 places, 276 transitions, 2624 flow [2024-06-27 18:45:28,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2624, PETRI_PLACES=395, PETRI_TRANSITIONS=276} [2024-06-27 18:45:28,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-06-27 18:45:28,400 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 276 transitions, 2624 flow [2024-06-27 18:45:28,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:28,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:28,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:28,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:45:28,401 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 18:45:28,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1330530351, now seen corresponding path program 12 times [2024-06-27 18:45:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:28,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093297109] [2024-06-27 18:45:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:28,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:29,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:29,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:29,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093297109] [2024-06-27 18:45:29,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093297109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:29,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:29,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:29,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37096172] [2024-06-27 18:45:29,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:29,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:29,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:29,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:29,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:29,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:29,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 276 transitions, 2624 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:29,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:29,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:29,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:30,976 INFO L124 PetriNetUnfolderBase]: 3153/7217 cut-off events. [2024-06-27 18:45:30,976 INFO L125 PetriNetUnfolderBase]: For 178810/178822 co-relation queries the response was YES. [2024-06-27 18:45:31,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31531 conditions, 7217 events. 3153/7217 cut-off events. For 178810/178822 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 67679 event pairs, 1635 based on Foata normal form. 14/7145 useless extension candidates. Maximal degree in co-relation 31383. Up to 5087 conditions per place. [2024-06-27 18:45:31,064 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 258 selfloop transitions, 52 changer transitions 0/320 dead transitions. [2024-06-27 18:45:31,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 320 transitions, 3428 flow [2024-06-27 18:45:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-27 18:45:31,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:45:31,065 INFO L175 Difference]: Start difference. First operand has 395 places, 276 transitions, 2624 flow. Second operand 12 states and 224 transitions. [2024-06-27 18:45:31,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 320 transitions, 3428 flow [2024-06-27 18:45:32,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 320 transitions, 3341 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:32,300 INFO L231 Difference]: Finished difference. Result has 397 places, 276 transitions, 2644 flow [2024-06-27 18:45:32,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2537, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2644, PETRI_PLACES=397, PETRI_TRANSITIONS=276} [2024-06-27 18:45:32,301 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 355 predicate places. [2024-06-27 18:45:32,301 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 276 transitions, 2644 flow [2024-06-27 18:45:32,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:32,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:32,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:32,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:45:32,302 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 18:45:32,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:32,302 INFO L85 PathProgramCache]: Analyzing trace with hash -140110089, now seen corresponding path program 13 times [2024-06-27 18:45:32,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:32,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389251088] [2024-06-27 18:45:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:32,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389251088] [2024-06-27 18:45:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389251088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:33,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:33,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210586538] [2024-06-27 18:45:33,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:33,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:33,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:33,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:33,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:33,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:33,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 276 transitions, 2644 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:33,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:33,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:33,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:34,893 INFO L124 PetriNetUnfolderBase]: 3189/7292 cut-off events. [2024-06-27 18:45:34,893 INFO L125 PetriNetUnfolderBase]: For 181136/181148 co-relation queries the response was YES. [2024-06-27 18:45:34,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32003 conditions, 7292 events. 3189/7292 cut-off events. For 181136/181148 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 68376 event pairs, 1763 based on Foata normal form. 14/7208 useless extension candidates. Maximal degree in co-relation 31854. Up to 5407 conditions per place. [2024-06-27 18:45:34,980 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 229 selfloop transitions, 72 changer transitions 0/311 dead transitions. [2024-06-27 18:45:34,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 311 transitions, 3402 flow [2024-06-27 18:45:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-27 18:45:34,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 18:45:34,981 INFO L175 Difference]: Start difference. First operand has 397 places, 276 transitions, 2644 flow. Second operand 12 states and 220 transitions. [2024-06-27 18:45:34,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 311 transitions, 3402 flow [2024-06-27 18:45:36,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 311 transitions, 3299 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:36,199 INFO L231 Difference]: Finished difference. Result has 399 places, 276 transitions, 2688 flow [2024-06-27 18:45:36,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2688, PETRI_PLACES=399, PETRI_TRANSITIONS=276} [2024-06-27 18:45:36,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 357 predicate places. [2024-06-27 18:45:36,199 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 276 transitions, 2688 flow [2024-06-27 18:45:36,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:36,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:36,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:36,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:45:36,199 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 18:45:36,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 808350281, now seen corresponding path program 14 times [2024-06-27 18:45:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353570149] [2024-06-27 18:45:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:37,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:37,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353570149] [2024-06-27 18:45:37,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353570149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:37,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:37,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:37,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384182333] [2024-06-27 18:45:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:37,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:37,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:37,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:37,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:37,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:37,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 276 transitions, 2688 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:37,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:37,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:37,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:38,906 INFO L124 PetriNetUnfolderBase]: 3225/7371 cut-off events. [2024-06-27 18:45:38,906 INFO L125 PetriNetUnfolderBase]: For 183608/183620 co-relation queries the response was YES. [2024-06-27 18:45:38,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32352 conditions, 7371 events. 3225/7371 cut-off events. For 183608/183620 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 69348 event pairs, 1808 based on Foata normal form. 14/7285 useless extension candidates. Maximal degree in co-relation 32202. Up to 5498 conditions per place. [2024-06-27 18:45:38,991 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 231 selfloop transitions, 70 changer transitions 0/311 dead transitions. [2024-06-27 18:45:38,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 311 transitions, 3446 flow [2024-06-27 18:45:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:38,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-27 18:45:38,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 18:45:38,992 INFO L175 Difference]: Start difference. First operand has 399 places, 276 transitions, 2688 flow. Second operand 12 states and 222 transitions. [2024-06-27 18:45:38,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 311 transitions, 3446 flow [2024-06-27 18:45:40,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 311 transitions, 3303 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:40,234 INFO L231 Difference]: Finished difference. Result has 401 places, 276 transitions, 2688 flow [2024-06-27 18:45:40,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2688, PETRI_PLACES=401, PETRI_TRANSITIONS=276} [2024-06-27 18:45:40,235 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-27 18:45:40,235 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 276 transitions, 2688 flow [2024-06-27 18:45:40,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:40,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:40,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:40,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:45:40,235 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 18:45:40,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:40,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1406727279, now seen corresponding path program 15 times [2024-06-27 18:45:40,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:40,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369736004] [2024-06-27 18:45:40,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:41,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369736004] [2024-06-27 18:45:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369736004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:41,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:41,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:41,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491357460] [2024-06-27 18:45:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:41,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:41,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:41,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:41,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 276 transitions, 2688 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:41,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:41,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:41,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:42,918 INFO L124 PetriNetUnfolderBase]: 3261/7457 cut-off events. [2024-06-27 18:45:42,919 INFO L125 PetriNetUnfolderBase]: For 186170/186182 co-relation queries the response was YES. [2024-06-27 18:45:42,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32716 conditions, 7457 events. 3261/7457 cut-off events. For 186170/186182 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70259 event pairs, 1835 based on Foata normal form. 14/7371 useless extension candidates. Maximal degree in co-relation 32565. Up to 5532 conditions per place. [2024-06-27 18:45:43,003 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 221 selfloop transitions, 80 changer transitions 0/311 dead transitions. [2024-06-27 18:45:43,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 311 transitions, 3446 flow [2024-06-27 18:45:43,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2024-06-27 18:45:43,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 18:45:43,004 INFO L175 Difference]: Start difference. First operand has 401 places, 276 transitions, 2688 flow. Second operand 12 states and 216 transitions. [2024-06-27 18:45:43,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 311 transitions, 3446 flow [2024-06-27 18:45:44,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 311 transitions, 3307 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:44,294 INFO L231 Difference]: Finished difference. Result has 403 places, 276 transitions, 2712 flow [2024-06-27 18:45:44,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2712, PETRI_PLACES=403, PETRI_TRANSITIONS=276} [2024-06-27 18:45:44,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 361 predicate places. [2024-06-27 18:45:44,295 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 276 transitions, 2712 flow [2024-06-27 18:45:44,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:44,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:44,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:44,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:45:44,295 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 18:45:44,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1631909427, now seen corresponding path program 16 times [2024-06-27 18:45:44,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:44,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911530694] [2024-06-27 18:45:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:44,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:45,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:45,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:45,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911530694] [2024-06-27 18:45:45,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911530694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:45,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:45,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:45,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947566231] [2024-06-27 18:45:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:45,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:45,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:45,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:45,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 276 transitions, 2712 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:45,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:45,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:45,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:46,926 INFO L124 PetriNetUnfolderBase]: 3297/7532 cut-off events. [2024-06-27 18:45:46,926 INFO L125 PetriNetUnfolderBase]: For 188869/188881 co-relation queries the response was YES. [2024-06-27 18:45:47,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33123 conditions, 7532 events. 3297/7532 cut-off events. For 188869/188881 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 71143 event pairs, 1843 based on Foata normal form. 14/7445 useless extension candidates. Maximal degree in co-relation 32971. Up to 5487 conditions per place. [2024-06-27 18:45:47,022 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 231 selfloop transitions, 74 changer transitions 0/315 dead transitions. [2024-06-27 18:45:47,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 315 transitions, 3492 flow [2024-06-27 18:45:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-27 18:45:47,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 18:45:47,023 INFO L175 Difference]: Start difference. First operand has 403 places, 276 transitions, 2712 flow. Second operand 12 states and 225 transitions. [2024-06-27 18:45:47,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 315 transitions, 3492 flow [2024-06-27 18:45:48,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 315 transitions, 3333 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:48,312 INFO L231 Difference]: Finished difference. Result has 405 places, 276 transitions, 2704 flow [2024-06-27 18:45:48,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2704, PETRI_PLACES=405, PETRI_TRANSITIONS=276} [2024-06-27 18:45:48,313 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-27 18:45:48,313 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 276 transitions, 2704 flow [2024-06-27 18:45:48,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:48,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:48,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:48,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:45:48,313 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 18:45:48,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2009155537, now seen corresponding path program 17 times [2024-06-27 18:45:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:48,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326831274] [2024-06-27 18:45:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:49,294 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 18:45:49,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:49,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326831274] [2024-06-27 18:45:49,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326831274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:49,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:49,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:49,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386038308] [2024-06-27 18:45:49,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:49,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:49,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:49,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 276 transitions, 2704 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:49,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:49,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:49,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:50,931 INFO L124 PetriNetUnfolderBase]: 3333/7618 cut-off events. [2024-06-27 18:45:50,931 INFO L125 PetriNetUnfolderBase]: For 191340/191352 co-relation queries the response was YES. [2024-06-27 18:45:51,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33506 conditions, 7618 events. 3333/7618 cut-off events. For 191340/191352 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 72126 event pairs, 1907 based on Foata normal form. 14/7526 useless extension candidates. Maximal degree in co-relation 33353. Up to 5695 conditions per place. [2024-06-27 18:45:51,035 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 228 selfloop transitions, 73 changer transitions 0/311 dead transitions. [2024-06-27 18:45:51,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 311 transitions, 3462 flow [2024-06-27 18:45:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-27 18:45:51,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:45:51,036 INFO L175 Difference]: Start difference. First operand has 405 places, 276 transitions, 2704 flow. Second operand 12 states and 219 transitions. [2024-06-27 18:45:51,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 311 transitions, 3462 flow [2024-06-27 18:45:52,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 311 transitions, 3315 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:52,455 INFO L231 Difference]: Finished difference. Result has 407 places, 276 transitions, 2706 flow [2024-06-27 18:45:52,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2706, PETRI_PLACES=407, PETRI_TRANSITIONS=276} [2024-06-27 18:45:52,456 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 365 predicate places. [2024-06-27 18:45:52,456 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 276 transitions, 2706 flow [2024-06-27 18:45:52,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:52,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:52,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:52,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:45:52,457 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 18:45:52,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1722922543, now seen corresponding path program 18 times [2024-06-27 18:45:52,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:52,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686983738] [2024-06-27 18:45:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:53,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:53,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686983738] [2024-06-27 18:45:53,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686983738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:53,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:53,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:53,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094297737] [2024-06-27 18:45:53,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:53,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:53,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:53,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:53,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:53,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:53,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 276 transitions, 2706 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:53,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:53,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:53,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:55,188 INFO L124 PetriNetUnfolderBase]: 3369/7697 cut-off events. [2024-06-27 18:45:55,189 INFO L125 PetriNetUnfolderBase]: For 193924/193936 co-relation queries the response was YES. [2024-06-27 18:45:55,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33835 conditions, 7697 events. 3369/7697 cut-off events. For 193924/193936 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 72949 event pairs, 1933 based on Foata normal form. 14/7604 useless extension candidates. Maximal degree in co-relation 33681. Up to 5716 conditions per place. [2024-06-27 18:45:55,289 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 228 selfloop transitions, 77 changer transitions 0/315 dead transitions. [2024-06-27 18:45:55,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 315 transitions, 3486 flow [2024-06-27 18:45:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-27 18:45:55,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:45:55,290 INFO L175 Difference]: Start difference. First operand has 407 places, 276 transitions, 2706 flow. Second operand 12 states and 224 transitions. [2024-06-27 18:45:55,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 315 transitions, 3486 flow [2024-06-27 18:45:56,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 315 transitions, 3341 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:56,705 INFO L231 Difference]: Finished difference. Result has 409 places, 276 transitions, 2718 flow [2024-06-27 18:45:56,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2718, PETRI_PLACES=409, PETRI_TRANSITIONS=276} [2024-06-27 18:45:56,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-06-27 18:45:56,706 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 276 transitions, 2718 flow [2024-06-27 18:45:56,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:56,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:56,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:56,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:45:56,706 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 18:45:56,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1719127249, now seen corresponding path program 19 times [2024-06-27 18:45:56,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:56,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052088478] [2024-06-27 18:45:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:56,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:57,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:57,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052088478] [2024-06-27 18:45:57,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052088478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:57,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:57,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74522452] [2024-06-27 18:45:57,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:57,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:57,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:57,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:45:57,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 276 transitions, 2718 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:57,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:57,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:45:57,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:59,450 INFO L124 PetriNetUnfolderBase]: 3405/7772 cut-off events. [2024-06-27 18:45:59,450 INFO L125 PetriNetUnfolderBase]: For 196454/196466 co-relation queries the response was YES. [2024-06-27 18:45:59,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34210 conditions, 7772 events. 3405/7772 cut-off events. For 196454/196466 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 73790 event pairs, 1979 based on Foata normal form. 14/7675 useless extension candidates. Maximal degree in co-relation 34055. Up to 5858 conditions per place. [2024-06-27 18:45:59,554 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 225 selfloop transitions, 76 changer transitions 0/311 dead transitions. [2024-06-27 18:45:59,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 311 transitions, 3476 flow [2024-06-27 18:45:59,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-27 18:45:59,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:45:59,555 INFO L175 Difference]: Start difference. First operand has 409 places, 276 transitions, 2718 flow. Second operand 12 states and 219 transitions. [2024-06-27 18:45:59,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 311 transitions, 3476 flow [2024-06-27 18:46:01,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 311 transitions, 3323 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:01,145 INFO L231 Difference]: Finished difference. Result has 411 places, 276 transitions, 2720 flow [2024-06-27 18:46:01,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2720, PETRI_PLACES=411, PETRI_TRANSITIONS=276} [2024-06-27 18:46:01,145 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-27 18:46:01,145 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 276 transitions, 2720 flow [2024-06-27 18:46:01,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:01,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:01,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:01,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:46:01,146 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 18:46:01,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:01,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1575236719, now seen corresponding path program 20 times [2024-06-27 18:46:01,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:01,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767234079] [2024-06-27 18:46:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:01,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:02,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:02,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767234079] [2024-06-27 18:46:02,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767234079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:02,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:02,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:02,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490802122] [2024-06-27 18:46:02,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:02,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:02,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:02,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:02,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:02,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:46:02,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 276 transitions, 2720 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:02,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:02,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:46:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:03,864 INFO L124 PetriNetUnfolderBase]: 3441/7850 cut-off events. [2024-06-27 18:46:03,864 INFO L125 PetriNetUnfolderBase]: For 199687/199699 co-relation queries the response was YES. [2024-06-27 18:46:03,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34550 conditions, 7850 events. 3441/7850 cut-off events. For 199687/199699 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 74674 event pairs, 1915 based on Foata normal form. 14/7769 useless extension candidates. Maximal degree in co-relation 34394. Up to 5221 conditions per place. [2024-06-27 18:46:03,971 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 215 selfloop transitions, 93 changer transitions 0/318 dead transitions. [2024-06-27 18:46:03,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 318 transitions, 3514 flow [2024-06-27 18:46:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-27 18:46:03,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 18:46:03,972 INFO L175 Difference]: Start difference. First operand has 411 places, 276 transitions, 2720 flow. Second operand 12 states and 225 transitions. [2024-06-27 18:46:03,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 318 transitions, 3514 flow [2024-06-27 18:46:05,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 318 transitions, 3363 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:05,335 INFO L231 Difference]: Finished difference. Result has 413 places, 276 transitions, 2758 flow [2024-06-27 18:46:05,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2758, PETRI_PLACES=413, PETRI_TRANSITIONS=276} [2024-06-27 18:46:05,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 371 predicate places. [2024-06-27 18:46:05,336 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 276 transitions, 2758 flow [2024-06-27 18:46:05,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:05,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:05,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:46:05,336 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 18:46:05,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash -110012619, now seen corresponding path program 21 times [2024-06-27 18:46:05,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781722965] [2024-06-27 18:46:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:06,294 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 18:46:06,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:06,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781722965] [2024-06-27 18:46:06,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781722965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:06,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:06,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:06,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721710549] [2024-06-27 18:46:06,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:06,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:06,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:06,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:06,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:06,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:46:06,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 276 transitions, 2758 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:06,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:06,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:46:06,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:08,094 INFO L124 PetriNetUnfolderBase]: 3477/7937 cut-off events. [2024-06-27 18:46:08,094 INFO L125 PetriNetUnfolderBase]: For 201925/201937 co-relation queries the response was YES. [2024-06-27 18:46:08,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35166 conditions, 7937 events. 3477/7937 cut-off events. For 201925/201937 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 75565 event pairs, 2060 based on Foata normal form. 14/7837 useless extension candidates. Maximal degree in co-relation 35009. Up to 6002 conditions per place. [2024-06-27 18:46:08,200 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 226 selfloop transitions, 75 changer transitions 0/311 dead transitions. [2024-06-27 18:46:08,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 311 transitions, 3516 flow [2024-06-27 18:46:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:46:08,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-27 18:46:08,201 INFO L175 Difference]: Start difference. First operand has 413 places, 276 transitions, 2758 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:46:08,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 311 transitions, 3516 flow [2024-06-27 18:46:09,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 311 transitions, 3331 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:09,549 INFO L231 Difference]: Finished difference. Result has 415 places, 276 transitions, 2726 flow [2024-06-27 18:46:09,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2726, PETRI_PLACES=415, PETRI_TRANSITIONS=276} [2024-06-27 18:46:09,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 373 predicate places. [2024-06-27 18:46:09,549 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 276 transitions, 2726 flow [2024-06-27 18:46:09,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:09,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:09,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:09,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:46:09,550 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 18:46:09,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash 125999509, now seen corresponding path program 22 times [2024-06-27 18:46:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:09,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546105626] [2024-06-27 18:46:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:10,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546105626] [2024-06-27 18:46:10,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546105626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:10,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483156567] [2024-06-27 18:46:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:10,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:10,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:46:10,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 276 transitions, 2726 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:10,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:10,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:46:10,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:12,378 INFO L124 PetriNetUnfolderBase]: 3470/7925 cut-off events. [2024-06-27 18:46:12,378 INFO L125 PetriNetUnfolderBase]: For 152460/152472 co-relation queries the response was YES. [2024-06-27 18:46:12,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34103 conditions, 7925 events. 3470/7925 cut-off events. For 152460/152472 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 75570 event pairs, 1998 based on Foata normal form. 14/7832 useless extension candidates. Maximal degree in co-relation 33945. Up to 5730 conditions per place. [2024-06-27 18:46:12,486 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 222 selfloop transitions, 82 changer transitions 0/314 dead transitions. [2024-06-27 18:46:12,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 314 transitions, 3236 flow [2024-06-27 18:46:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-27 18:46:12,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 18:46:12,487 INFO L175 Difference]: Start difference. First operand has 415 places, 276 transitions, 2726 flow. Second operand 12 states and 220 transitions. [2024-06-27 18:46:12,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 314 transitions, 3236 flow [2024-06-27 18:46:13,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 314 transitions, 2715 flow, removed 14 selfloop flow, removed 127 redundant places. [2024-06-27 18:46:13,035 INFO L231 Difference]: Finished difference. Result has 298 places, 275 transitions, 2105 flow [2024-06-27 18:46:13,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2105, PETRI_PLACES=298, PETRI_TRANSITIONS=275} [2024-06-27 18:46:13,036 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-27 18:46:13,036 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 275 transitions, 2105 flow [2024-06-27 18:46:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:13,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:13,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:46:13,036 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:13,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:13,036 INFO L85 PathProgramCache]: Analyzing trace with hash 925637179, now seen corresponding path program 1 times [2024-06-27 18:46:13,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:13,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418228902] [2024-06-27 18:46:13,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:13,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:13,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418228902] [2024-06-27 18:46:13,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418228902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:13,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:13,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:46:13,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516233548] [2024-06-27 18:46:13,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:13,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:46:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:46:13,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:46:13,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-06-27 18:46:13,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 275 transitions, 2105 flow. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:13,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:13,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-06-27 18:46:13,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:13,496 INFO L124 PetriNetUnfolderBase]: 1881/4905 cut-off events. [2024-06-27 18:46:13,496 INFO L125 PetriNetUnfolderBase]: For 27465/27481 co-relation queries the response was YES. [2024-06-27 18:46:13,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16696 conditions, 4905 events. 1881/4905 cut-off events. For 27465/27481 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 45762 event pairs, 295 based on Foata normal form. 387/5153 useless extension candidates. Maximal degree in co-relation 16655. Up to 1393 conditions per place. [2024-06-27 18:46:13,522 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 115 selfloop transitions, 69 changer transitions 1/273 dead transitions. [2024-06-27 18:46:13,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 273 transitions, 2405 flow [2024-06-27 18:46:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:46:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:46:13,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-27 18:46:13,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6526315789473685 [2024-06-27 18:46:13,523 INFO L175 Difference]: Start difference. First operand has 298 places, 275 transitions, 2105 flow. Second operand 5 states and 124 transitions. [2024-06-27 18:46:13,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 273 transitions, 2405 flow [2024-06-27 18:46:13,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 273 transitions, 2090 flow, removed 32 selfloop flow, removed 25 redundant places. [2024-06-27 18:46:13,652 INFO L231 Difference]: Finished difference. Result has 278 places, 263 transitions, 1905 flow [2024-06-27 18:46:13,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1905, PETRI_PLACES=278, PETRI_TRANSITIONS=263} [2024-06-27 18:46:13,652 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-27 18:46:13,653 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 263 transitions, 1905 flow [2024-06-27 18:46:13,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:13,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:13,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:13,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:46:13,653 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:13,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1741950230, now seen corresponding path program 1 times [2024-06-27 18:46:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296543426] [2024-06-27 18:46:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:13,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296543426] [2024-06-27 18:46:13,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296543426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:13,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:13,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:46:13,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853547236] [2024-06-27 18:46:13,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:13,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:46:13,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:46:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:46:13,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 18:46:13,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 263 transitions, 1905 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:13,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:13,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 18:46:13,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:14,283 INFO L124 PetriNetUnfolderBase]: 2303/5311 cut-off events. [2024-06-27 18:46:14,284 INFO L125 PetriNetUnfolderBase]: For 25789/25792 co-relation queries the response was YES. [2024-06-27 18:46:14,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17849 conditions, 5311 events. 2303/5311 cut-off events. For 25789/25792 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 45652 event pairs, 628 based on Foata normal form. 1/5073 useless extension candidates. Maximal degree in co-relation 17815. Up to 1862 conditions per place. [2024-06-27 18:46:14,308 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 51 selfloop transitions, 29 changer transitions 169/289 dead transitions. [2024-06-27 18:46:14,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 289 transitions, 2394 flow [2024-06-27 18:46:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:46:14,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-27 18:46:14,309 INFO L175 Difference]: Start difference. First operand has 278 places, 263 transitions, 1905 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:46:14,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 289 transitions, 2394 flow [2024-06-27 18:46:14,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 289 transitions, 2012 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-06-27 18:46:14,441 INFO L231 Difference]: Finished difference. Result has 277 places, 110 transitions, 762 flow [2024-06-27 18:46:14,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=762, PETRI_PLACES=277, PETRI_TRANSITIONS=110} [2024-06-27 18:46:14,442 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-27 18:46:14,442 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 110 transitions, 762 flow [2024-06-27 18:46:14,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:14,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:14,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:14,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:46:14,442 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:14,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:14,443 INFO L85 PathProgramCache]: Analyzing trace with hash -814872978, now seen corresponding path program 2 times [2024-06-27 18:46:14,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:14,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125526293] [2024-06-27 18:46:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:14,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:14,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:14,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125526293] [2024-06-27 18:46:14,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125526293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:14,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:14,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:46:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987715595] [2024-06-27 18:46:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:14,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:46:14,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:14,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:46:14,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:46:14,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-27 18:46:14,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 110 transitions, 762 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:14,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:14,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-27 18:46:14,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:14,740 INFO L124 PetriNetUnfolderBase]: 582/1459 cut-off events. [2024-06-27 18:46:14,740 INFO L125 PetriNetUnfolderBase]: For 1964/1964 co-relation queries the response was YES. [2024-06-27 18:46:14,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 1459 events. 582/1459 cut-off events. For 1964/1964 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10158 event pairs, 290 based on Foata normal form. 52/1438 useless extension candidates. Maximal degree in co-relation 3967. Up to 496 conditions per place. [2024-06-27 18:46:14,747 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 27 selfloop transitions, 5 changer transitions 75/127 dead transitions. [2024-06-27 18:46:14,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 127 transitions, 970 flow [2024-06-27 18:46:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:46:14,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:46:14,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 18:46:14,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5427631578947368 [2024-06-27 18:46:14,748 INFO L175 Difference]: Start difference. First operand has 277 places, 110 transitions, 762 flow. Second operand 8 states and 165 transitions. [2024-06-27 18:46:14,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 127 transitions, 970 flow [2024-06-27 18:46:14,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 127 transitions, 767 flow, removed 11 selfloop flow, removed 36 redundant places. [2024-06-27 18:46:14,757 INFO L231 Difference]: Finished difference. Result has 126 places, 49 transitions, 249 flow [2024-06-27 18:46:14,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=126, PETRI_TRANSITIONS=49} [2024-06-27 18:46:14,757 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-27 18:46:14,757 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 49 transitions, 249 flow [2024-06-27 18:46:14,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:14,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:14,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:14,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:46:14,758 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:14,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash 978410970, now seen corresponding path program 3 times [2024-06-27 18:46:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:14,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109377927] [2024-06-27 18:46:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:14,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:14,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109377927] [2024-06-27 18:46:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109377927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542236581] [2024-06-27 18:46:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:14,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:14,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:14,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:14,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:14,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 18:46:14,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 49 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:14,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:14,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 18:46:14,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:15,174 INFO L124 PetriNetUnfolderBase]: 240/623 cut-off events. [2024-06-27 18:46:15,174 INFO L125 PetriNetUnfolderBase]: For 981/981 co-relation queries the response was YES. [2024-06-27 18:46:15,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 623 events. 240/623 cut-off events. For 981/981 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3514 event pairs, 29 based on Foata normal form. 20/616 useless extension candidates. Maximal degree in co-relation 1711. Up to 174 conditions per place. [2024-06-27 18:46:15,176 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 19 selfloop transitions, 7 changer transitions 29/70 dead transitions. [2024-06-27 18:46:15,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 70 transitions, 395 flow [2024-06-27 18:46:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-27 18:46:15,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:46:15,177 INFO L175 Difference]: Start difference. First operand has 126 places, 49 transitions, 249 flow. Second operand 12 states and 209 transitions. [2024-06-27 18:46:15,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 70 transitions, 395 flow [2024-06-27 18:46:15,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 324 flow, removed 29 selfloop flow, removed 15 redundant places. [2024-06-27 18:46:15,179 INFO L231 Difference]: Finished difference. Result has 80 places, 34 transitions, 125 flow [2024-06-27 18:46:15,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=125, PETRI_PLACES=80, PETRI_TRANSITIONS=34} [2024-06-27 18:46:15,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-27 18:46:15,179 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 34 transitions, 125 flow [2024-06-27 18:46:15,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:15,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:15,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:15,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:46:15,180 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:15,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash 837279404, now seen corresponding path program 4 times [2024-06-27 18:46:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:15,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379877956] [2024-06-27 18:46:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:46:15,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 18:46:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:46:15,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 18:46:15,243 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 18:46:15,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-27 18:46:15,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-27 18:46:15,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 18:46:15,246 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-06-27 18:46:15,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 18:46:15,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 18:46:15,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 18:46:15,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:46:15,247 INFO L445 BasicCegarLoop]: Path program histogram: [22, 21, 20, 14, 10, 7, 7, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:15,251 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:46:15,251 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:46:15,313 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 18:46:15,313 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 18:46:15,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:46:15 BasicIcfg [2024-06-27 18:46:15,314 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:46:15,315 INFO L158 Benchmark]: Toolchain (without parser) took 332445.04ms. Allocated memory was 157.3MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 130.4MB in the beginning and 3.9GB in the end (delta: -3.7GB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2024-06-27 18:46:15,315 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 157.3MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:46:15,315 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:46:15,315 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.65ms. Allocated memory is still 157.3MB. Free memory was 130.4MB in the beginning and 97.1MB in the end (delta: 33.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-27 18:46:15,315 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.08ms. Allocated memory is still 157.3MB. Free memory was 97.1MB in the beginning and 94.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:46:15,315 INFO L158 Benchmark]: Boogie Preprocessor took 62.85ms. Allocated memory is still 157.3MB. Free memory was 94.4MB in the beginning and 91.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:46:15,316 INFO L158 Benchmark]: RCFGBuilder took 607.90ms. Allocated memory is still 157.3MB. Free memory was 91.7MB in the beginning and 46.9MB in the end (delta: 44.8MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-27 18:46:15,316 INFO L158 Benchmark]: TraceAbstraction took 331240.07ms. Allocated memory was 157.3MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 46.1MB in the beginning and 3.9GB in the end (delta: -3.8GB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:46:15,316 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.10ms. Allocated memory is still 157.3MB. Free memory is still 117.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 157.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 481.65ms. Allocated memory is still 157.3MB. Free memory was 130.4MB in the beginning and 97.1MB in the end (delta: 33.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.08ms. Allocated memory is still 157.3MB. Free memory was 97.1MB in the beginning and 94.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.85ms. Allocated memory is still 157.3MB. Free memory was 94.4MB in the beginning and 91.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.90ms. Allocated memory is still 157.3MB. Free memory was 91.7MB in the beginning and 46.9MB in the end (delta: 44.8MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 331240.07ms. Allocated memory was 157.3MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 46.1MB in the beginning and 3.9GB in the end (delta: -3.8GB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L722] 0 _Bool y$flush_delayed; [L723] 0 int y$mem_tmp; [L724] 0 _Bool y$r_buff0_thd0; [L725] 0 _Bool y$r_buff0_thd1; [L726] 0 _Bool y$r_buff0_thd2; [L727] 0 _Bool y$r_buff1_thd0; [L728] 0 _Bool y$r_buff1_thd1; [L729] 0 _Bool y$r_buff1_thd2; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L737] 0 int z = 0; [L738] 0 _Bool weak$$choice0; [L739] 0 _Bool weak$$choice2; [L815] 0 pthread_t t1649; [L816] 0 //@ ghost multithreaded = 1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1649=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L816] FCALL, FORK 0 pthread_create(&t1649, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1649=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L817] 0 pthread_t t1650; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1649=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L818] 0 //@ assert (((((((((((((((((!multithreaded || (y$r_buff0_thd0 == (_Bool) 0)) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || ((y$w_buff0 == 0) || (y$w_buff0 == 1)))) && (!multithreaded || ((y$w_buff1 == 0) || (y$w_buff1 == 1)))) && (!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)))) && (!multithreaded || ((y$mem_tmp == 0) || (y$mem_tmp == 1)))) && (!multithreaded || (y$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (y$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1)))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))) && (!multithreaded || (y$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (y$read_delayed_var == 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))) && (!multithreaded || ((z == 0) || (z == 1)))); [L818] FCALL, FORK 0 pthread_create(&t1650, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1649=-2, t1650=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L819] 0 //@ assert (((((((((((((((((!multithreaded || (y$r_buff0_thd0 == (_Bool) 0)) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || ((y$w_buff0 == 0) || (y$w_buff0 == 1)))) && (!multithreaded || ((y$w_buff1 == 0) || (y$w_buff1 == 1)))) && (!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)))) && (!multithreaded || ((y$mem_tmp == 0) || (y$mem_tmp == 1)))) && (!multithreaded || (y$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (y$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1)))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))) && (!multithreaded || (y$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (y$read_delayed_var == 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))) && (!multithreaded || ((z == 0) || (z == 1)))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1649=-2, t1650=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L773] 2 y$w_buff1 = y$w_buff0 [L774] 2 y$w_buff0 = 1 [L775] 2 y$w_buff1_used = y$w_buff0_used [L776] 2 y$w_buff0_used = (_Bool)1 [L777] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L777] RET 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L778] 2 y$r_buff1_thd0 = y$r_buff0_thd0 [L779] 2 y$r_buff1_thd1 = y$r_buff0_thd1 [L780] 2 y$r_buff1_thd2 = y$r_buff0_thd2 [L781] 2 y$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L784] 2 z = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L787] 2 __unbuffered_p1_EAX = z VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L790] 2 __unbuffered_p1_EBX = x VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L743] 1 x = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L748] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L749] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L750] 1 y$flush_delayed = weak$$choice2 [L751] 1 y$mem_tmp = y [L752] 1 y = !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L753] 1 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L754] 1 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L755] 1 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L756] 1 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L757] 1 y$r_buff0_thd1 = weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L758] 1 y$r_buff1_thd1 = weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L759] 1 __unbuffered_p0_EAX = y [L760] 1 y = y$flush_delayed ? y$mem_tmp : y [L761] 1 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L793] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L794] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L795] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L796] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L797] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L800] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L766] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L820] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1649=-2, t1650=-1, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L822] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L822] RET 0 assume_abort_if_not(main$tmp_guard0) [L824] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L825] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L826] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L827] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L828] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1649=-2, t1650=-1, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L831] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1649=-2, t1650=-1, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L833] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L19] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 819]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 818]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 58 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 331.1s, OverallIterations: 146, TraceHistogramMax: 1, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 223.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12348 SdHoareTripleChecker+Valid, 43.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10778 mSDsluCounter, 7390 SdHoareTripleChecker+Invalid, 37.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6744 mSDsCounter, 2482 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75010 IncrementalHoareTripleChecker+Invalid, 77492 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2482 mSolverCounterUnsat, 646 mSDtfsCounter, 75010 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1664 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1650 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3889 ImplicationChecksByTransitivity, 44.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4929occurred in iteration=106, InterpolantAutomatonStates: 1465, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 106.0s InterpolantComputationTime, 2574 NumberOfCodeBlocks, 2574 NumberOfCodeBlocksAsserted, 146 NumberOfCheckSat, 2401 ConstructedInterpolants, 0 QuantifiedInterpolants, 104368 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 145 InterpolantComputations, 145 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-06-27 18:46:15,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE