./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi008.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i ./goblint.2024-06-19_11-23-25.files/protection/rfi008.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:43:51,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:43:51,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:43:51,361 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:43:51,361 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:43:51,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:43:51,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:43:51,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:43:51,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:43:51,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:43:51,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:43:51,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:43:51,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:43:51,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:43:51,407 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:43:51,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:43:51,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:43:51,408 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:43:51,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:43:51,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:43:51,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:43:51,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:43:51,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:43:51,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:43:51,410 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:43:51,410 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:43:51,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:43:51,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:43:51,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:43:51,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:43:51,412 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:43:51,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:43:51,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:43:51,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:43:51,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:43:51,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:43:51,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:43:51,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:43:51,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:43:51,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:43:51,415 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:43:51,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:43:51,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:43:51,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:43:51,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:43:51,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:43:51,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:43:51,666 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:43:51,666 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:43:51,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-27 18:43:52,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:43:53,161 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:43:53,162 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.opt.i [2024-06-27 18:43:53,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f233ec5/b4db5b42932e41b195654be7e034b78f/FLAGa4678ac82 [2024-06-27 18:43:53,188 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4f233ec5/b4db5b42932e41b195654be7e034b78f [2024-06-27 18:43:53,190 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:43:53,192 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:43:53,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi008.opt.yml/witness.yml [2024-06-27 18:43:53,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:43:53,357 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:43:53,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:43:53,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:43:53,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:43:53,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:43:53" (1/2) ... [2024-06-27 18:43:53,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d834788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:43:53, skipping insertion in model container [2024-06-27 18:43:53,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:43:53" (1/2) ... [2024-06-27 18:43:53,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1bce354e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:43:53, skipping insertion in model container [2024-06-27 18:43:53,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:43:53" (2/2) ... [2024-06-27 18:43:53,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d834788 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:53, skipping insertion in model container [2024-06-27 18:43:53,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:43:53" (2/2) ... [2024-06-27 18:43:53,366 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:43:53,477 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:43:53,478 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:43:53,478 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:43:53,478 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:43:53,478 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 18:43:53,556 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:43:53,753 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/rfi008.opt.i[987,1000] [2024-06-27 18:43:53,939 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:43:53,947 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:43:53,984 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/rfi008.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:43:54,058 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:43:54,090 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:43:54,091 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54 WrapperNode [2024-06-27 18:43:54,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:43:54,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:43:54,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:43:54,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:43:54,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,112 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,138 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 18:43:54,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:43:54,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:43:54,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:43:54,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:43:54,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,156 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,178 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 18:43:54,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,194 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,210 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:43:54,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:43:54,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:43:54,214 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:43:54,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (1/1) ... [2024-06-27 18:43:54,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:43:54,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:43:54,249 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 18:43:54,276 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 18:43:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:43:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:43:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:43:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:43:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:43:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:43:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:43:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:43:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:43:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:43:54,293 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 18:43:54,417 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:43:54,420 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:43:54,773 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:43:54,774 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:43:54,970 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:43:54,970 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:43:54,971 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:43:54 BoogieIcfgContainer [2024-06-27 18:43:54,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:43:54,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:43:54,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:43:54,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:43:54,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:43:53" (1/4) ... [2024-06-27 18:43:54,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19597e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:43:54, skipping insertion in model container [2024-06-27 18:43:54,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:43:53" (2/4) ... [2024-06-27 18:43:54,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19597e11 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:43:54, skipping insertion in model container [2024-06-27 18:43:54,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:54" (3/4) ... [2024-06-27 18:43:54,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19597e11 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:43:54, skipping insertion in model container [2024-06-27 18:43:54,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:43:54" (4/4) ... [2024-06-27 18:43:54,986 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.opt.i [2024-06-27 18:43:55,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:43:55,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:43:55,002 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:43:55,048 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:43:55,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:43:55,118 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:43:55,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:43:55,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 18:43:55,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:43:55,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:43:55,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:43:55,156 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;@6e2625c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:43:55,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:43:55,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:43:55,164 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:43:55,164 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:43:55,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:55,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:43:55,166 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 18:43:55,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:55,175 INFO L85 PathProgramCache]: Analyzing trace with hash 345507155, now seen corresponding path program 1 times [2024-06-27 18:43:55,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:55,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554248233] [2024-06-27 18:43:55,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554248233] [2024-06-27 18:43:56,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554248233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:56,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:56,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:43:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909694946] [2024-06-27 18:43:56,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:56,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:43:56,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:43:56,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:43:56,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 18:43:56,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:56,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:56,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 18:43:56,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:56,593 INFO L124 PetriNetUnfolderBase]: 384/793 cut-off events. [2024-06-27 18:43:56,593 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 18:43:56,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 793 events. 384/793 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4451 event pairs, 284 based on Foata normal form. 31/742 useless extension candidates. Maximal degree in co-relation 1446. Up to 639 conditions per place. [2024-06-27 18:43:56,605 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 29 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:43:56,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 165 flow [2024-06-27 18:43:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:43:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:43:56,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 18:43:56,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-06-27 18:43:56,620 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 79 transitions. [2024-06-27 18:43:56,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 165 flow [2024-06-27 18:43:56,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:56,627 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:43:56,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-27 18:43:56,634 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:43:56,635 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:43:56,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:56,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:56,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:56,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:43:56,636 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 18:43:56,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1319925042, now seen corresponding path program 1 times [2024-06-27 18:43:56,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:56,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853205613] [2024-06-27 18:43:56,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:56,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:57,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:57,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853205613] [2024-06-27 18:43:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853205613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:57,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:57,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:43:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49229142] [2024-06-27 18:43:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:57,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:43:57,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:43:57,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:43:57,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:43:57,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:57,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:57,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:43:57,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:57,682 INFO L124 PetriNetUnfolderBase]: 539/942 cut-off events. [2024-06-27 18:43:57,682 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-06-27 18:43:57,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 942 events. 539/942 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4943 event pairs, 211 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 2054. Up to 870 conditions per place. [2024-06-27 18:43:57,690 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-27 18:43:57,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 238 flow [2024-06-27 18:43:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:43:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:43:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-27 18:43:57,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-27 18:43:57,694 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 96 transitions. [2024-06-27 18:43:57,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 238 flow [2024-06-27 18:43:57,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:43:57,698 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-27 18:43:57,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-27 18:43:57,699 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 18:43:57,699 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-27 18:43:57,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:57,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:57,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:57,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:43:57,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:57,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2031995632, now seen corresponding path program 1 times [2024-06-27 18:43:57,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:57,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53043384] [2024-06-27 18:43:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:57,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53043384] [2024-06-27 18:43:58,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53043384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:58,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:58,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:43:58,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571869034] [2024-06-27 18:43:58,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:58,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:43:58,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:58,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:43:58,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:43:58,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:43:58,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:58,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:43:58,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:58,742 INFO L124 PetriNetUnfolderBase]: 531/902 cut-off events. [2024-06-27 18:43:58,742 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2024-06-27 18:43:58,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 902 events. 531/902 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4513 event pairs, 85 based on Foata normal form. 4/864 useless extension candidates. Maximal degree in co-relation 2183. Up to 824 conditions per place. [2024-06-27 18:43:58,747 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:43:58,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 320 flow [2024-06-27 18:43:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:43:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:43:58,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 18:43:58,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-27 18:43:58,750 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 5 states and 120 transitions. [2024-06-27 18:43:58,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 320 flow [2024-06-27 18:43:58,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:58,753 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 168 flow [2024-06-27 18:43:58,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-06-27 18:43:58,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 18:43:58,754 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 168 flow [2024-06-27 18:43:58,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:58,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:58,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:43:58,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:58,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2032576853, now seen corresponding path program 1 times [2024-06-27 18:43:58,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:58,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285655816] [2024-06-27 18:43:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:58,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:58,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:58,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285655816] [2024-06-27 18:43:58,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285655816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:58,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:58,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:43:58,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741091304] [2024-06-27 18:43:58,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:58,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:43:58,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:58,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:43:58,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:43:58,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-27 18:43:58,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:58,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-27 18:43:58,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:58,935 INFO L124 PetriNetUnfolderBase]: 206/514 cut-off events. [2024-06-27 18:43:58,935 INFO L125 PetriNetUnfolderBase]: For 252/272 co-relation queries the response was YES. [2024-06-27 18:43:58,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1054 conditions, 514 events. 206/514 cut-off events. For 252/272 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3071 event pairs, 102 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 1039. Up to 324 conditions per place. [2024-06-27 18:43:58,938 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 21 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-06-27 18:43:58,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 205 flow [2024-06-27 18:43:58,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:43:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:43:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 18:43:58,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-06-27 18:43:58,940 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 168 flow. Second operand 3 states and 81 transitions. [2024-06-27 18:43:58,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 205 flow [2024-06-27 18:43:58,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 190 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:58,942 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 134 flow [2024-06-27 18:43:58,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 18:43:58,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-27 18:43:58,943 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 134 flow [2024-06-27 18:43:58,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:58,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:43:58,944 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:58,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash 903386637, now seen corresponding path program 1 times [2024-06-27 18:43:58,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:58,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744450819] [2024-06-27 18:43:58,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:58,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:59,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744450819] [2024-06-27 18:43:59,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744450819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:59,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:59,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:43:59,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616187999] [2024-06-27 18:43:59,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:59,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:43:59,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:43:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:43:59,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:43:59,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:59,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:59,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:43:59,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:59,806 INFO L124 PetriNetUnfolderBase]: 414/871 cut-off events. [2024-06-27 18:43:59,806 INFO L125 PetriNetUnfolderBase]: For 491/494 co-relation queries the response was YES. [2024-06-27 18:43:59,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 871 events. 414/871 cut-off events. For 491/494 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4881 event pairs, 202 based on Foata normal form. 4/838 useless extension candidates. Maximal degree in co-relation 1932. Up to 687 conditions per place. [2024-06-27 18:43:59,812 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 38 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-27 18:43:59,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 270 flow [2024-06-27 18:43:59,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:43:59,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:43:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-27 18:43:59,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459459459459459 [2024-06-27 18:43:59,815 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 134 flow. Second operand 5 states and 101 transitions. [2024-06-27 18:43:59,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 270 flow [2024-06-27 18:43:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:59,820 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 175 flow [2024-06-27 18:43:59,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-27 18:43:59,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 18:43:59,825 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 175 flow [2024-06-27 18:43:59,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:59,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:59,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:59,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:43:59,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:59,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1911752464, now seen corresponding path program 1 times [2024-06-27 18:43:59,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:59,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821455558] [2024-06-27 18:43:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:59,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:01,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:01,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821455558] [2024-06-27 18:44:01,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821455558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:01,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:01,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:44:01,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569509722] [2024-06-27 18:44:01,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:01,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:44:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:44:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:44:01,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:44:01,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:01,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:01,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:44:01,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:01,632 INFO L124 PetriNetUnfolderBase]: 463/914 cut-off events. [2024-06-27 18:44:01,633 INFO L125 PetriNetUnfolderBase]: For 722/722 co-relation queries the response was YES. [2024-06-27 18:44:01,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2251 conditions, 914 events. 463/914 cut-off events. For 722/722 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4914 event pairs, 149 based on Foata normal form. 4/878 useless extension candidates. Maximal degree in co-relation 2233. Up to 678 conditions per place. [2024-06-27 18:44:01,638 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 54 selfloop transitions, 12 changer transitions 6/82 dead transitions. [2024-06-27 18:44:01,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 407 flow [2024-06-27 18:44:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 18:44:01,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-27 18:44:01,640 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 175 flow. Second operand 7 states and 154 transitions. [2024-06-27 18:44:01,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 407 flow [2024-06-27 18:44:01,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 398 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:44:01,643 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 195 flow [2024-06-27 18:44:01,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-27 18:44:01,643 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-27 18:44:01,644 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 195 flow [2024-06-27 18:44:01,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:01,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:01,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:01,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:44:01,644 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 18:44:01,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2059783691, now seen corresponding path program 1 times [2024-06-27 18:44:01,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:01,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635647265] [2024-06-27 18:44:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:01,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:02,342 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 18:44:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635647265] [2024-06-27 18:44:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635647265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:02,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:02,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:44:02,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755876952] [2024-06-27 18:44:02,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:02,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:44:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:44:02,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:44:02,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:44:02,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:02,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:02,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:44:02,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:02,671 INFO L124 PetriNetUnfolderBase]: 356/749 cut-off events. [2024-06-27 18:44:02,672 INFO L125 PetriNetUnfolderBase]: For 856/858 co-relation queries the response was YES. [2024-06-27 18:44:02,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 749 events. 356/749 cut-off events. For 856/858 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4107 event pairs, 117 based on Foata normal form. 4/729 useless extension candidates. Maximal degree in co-relation 1939. Up to 570 conditions per place. [2024-06-27 18:44:02,677 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 43 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-06-27 18:44:02,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 347 flow [2024-06-27 18:44:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:44:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:44:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-27 18:44:02,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-06-27 18:44:02,679 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 195 flow. Second operand 6 states and 118 transitions. [2024-06-27 18:44:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 347 flow [2024-06-27 18:44:02,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 321 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:02,681 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 204 flow [2024-06-27 18:44:02,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-27 18:44:02,682 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-27 18:44:02,682 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 204 flow [2024-06-27 18:44:02,683 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 18:44:02,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:02,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:02,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:44:02,683 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 18:44:02,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:02,684 INFO L85 PathProgramCache]: Analyzing trace with hash 564510764, now seen corresponding path program 1 times [2024-06-27 18:44:02,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:02,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071750684] [2024-06-27 18:44:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:03,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:03,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071750684] [2024-06-27 18:44:03,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071750684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:03,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:03,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:44:03,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306675469] [2024-06-27 18:44:03,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:03,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:44:03,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:03,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:44:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:44:03,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:03,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:03,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:03,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:03,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:03,589 INFO L124 PetriNetUnfolderBase]: 475/927 cut-off events. [2024-06-27 18:44:03,589 INFO L125 PetriNetUnfolderBase]: For 1153/1153 co-relation queries the response was YES. [2024-06-27 18:44:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 927 events. 475/927 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4908 event pairs, 144 based on Foata normal form. 1/895 useless extension candidates. Maximal degree in co-relation 2492. Up to 763 conditions per place. [2024-06-27 18:44:03,595 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 50 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:44:03,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 387 flow [2024-06-27 18:44:03,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:44:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:44:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 18:44:03,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49099099099099097 [2024-06-27 18:44:03,597 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 204 flow. Second operand 6 states and 109 transitions. [2024-06-27 18:44:03,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 387 flow [2024-06-27 18:44:03,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 368 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:03,599 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 247 flow [2024-06-27 18:44:03,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=247, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-27 18:44:03,600 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 18:44:03,600 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 247 flow [2024-06-27 18:44:03,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:03,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:03,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:03,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:44:03,601 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 18:44:03,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash 571206764, now seen corresponding path program 2 times [2024-06-27 18:44:03,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:03,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336761138] [2024-06-27 18:44:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:04,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:04,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336761138] [2024-06-27 18:44:04,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336761138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:04,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:04,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:44:04,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496862116] [2024-06-27 18:44:04,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:04,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:44:04,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:44:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:44:04,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:04,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:04,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:04,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:04,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:04,394 INFO L124 PetriNetUnfolderBase]: 476/924 cut-off events. [2024-06-27 18:44:04,395 INFO L125 PetriNetUnfolderBase]: For 1537/1543 co-relation queries the response was YES. [2024-06-27 18:44:04,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2651 conditions, 924 events. 476/924 cut-off events. For 1537/1543 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4930 event pairs, 140 based on Foata normal form. 5/895 useless extension candidates. Maximal degree in co-relation 2626. Up to 745 conditions per place. [2024-06-27 18:44:04,401 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-27 18:44:04,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 423 flow [2024-06-27 18:44:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:44:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:44:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 18:44:04,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49099099099099097 [2024-06-27 18:44:04,403 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 247 flow. Second operand 6 states and 109 transitions. [2024-06-27 18:44:04,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 423 flow [2024-06-27 18:44:04,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 404 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:04,407 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 275 flow [2024-06-27 18:44:04,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-06-27 18:44:04,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-27 18:44:04,408 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 275 flow [2024-06-27 18:44:04,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:04,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:04,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:04,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:44:04,409 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 18:44:04,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1896009936, now seen corresponding path program 1 times [2024-06-27 18:44:04,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:04,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358279708] [2024-06-27 18:44:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:04,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:04,974 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 18:44:04,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:04,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358279708] [2024-06-27 18:44:04,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358279708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:04,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:04,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:04,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897230348] [2024-06-27 18:44:04,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:04,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:04,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:04,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:05,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:05,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:05,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:05,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:05,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:05,390 INFO L124 PetriNetUnfolderBase]: 525/1025 cut-off events. [2024-06-27 18:44:05,390 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2024-06-27 18:44:05,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 1025 events. 525/1025 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5547 event pairs, 146 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 3066. Up to 800 conditions per place. [2024-06-27 18:44:05,398 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 62 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-27 18:44:05,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 93 transitions, 598 flow [2024-06-27 18:44:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:44:05,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 18:44:05,401 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 275 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:44:05,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 93 transitions, 598 flow [2024-06-27 18:44:05,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 561 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:05,406 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 420 flow [2024-06-27 18:44:05,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=420, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-27 18:44:05,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-27 18:44:05,407 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 420 flow [2024-06-27 18:44:05,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:05,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:05,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:05,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:44:05,407 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 18:44:05,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:05,408 INFO L85 PathProgramCache]: Analyzing trace with hash 319815226, now seen corresponding path program 2 times [2024-06-27 18:44:05,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:05,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462201603] [2024-06-27 18:44:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:05,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:05,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:05,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462201603] [2024-06-27 18:44:05,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462201603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:05,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:05,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366676275] [2024-06-27 18:44:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:05,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:06,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:06,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:06,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:06,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:06,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:06,457 INFO L124 PetriNetUnfolderBase]: 547/1067 cut-off events. [2024-06-27 18:44:06,458 INFO L125 PetriNetUnfolderBase]: For 2857/2857 co-relation queries the response was YES. [2024-06-27 18:44:06,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3512 conditions, 1067 events. 547/1067 cut-off events. For 2857/2857 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5833 event pairs, 146 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 3483. Up to 810 conditions per place. [2024-06-27 18:44:06,466 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 64 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-27 18:44:06,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 692 flow [2024-06-27 18:44:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:06,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:44:06,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 18:44:06,468 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 420 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:44:06,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 692 flow [2024-06-27 18:44:06,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 666 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 18:44:06,474 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 471 flow [2024-06-27 18:44:06,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-27 18:44:06,475 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-27 18:44:06,475 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 471 flow [2024-06-27 18:44:06,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:06,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:06,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:06,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:44:06,476 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 18:44:06,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash 319966134, now seen corresponding path program 1 times [2024-06-27 18:44:06,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:06,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012632681] [2024-06-27 18:44:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:06,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:07,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:07,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012632681] [2024-06-27 18:44:07,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012632681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:07,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:07,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:07,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146199699] [2024-06-27 18:44:07,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:07,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:07,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:07,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:07,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 471 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:07,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:07,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:07,721 INFO L124 PetriNetUnfolderBase]: 558/1080 cut-off events. [2024-06-27 18:44:07,721 INFO L125 PetriNetUnfolderBase]: For 3398/3398 co-relation queries the response was YES. [2024-06-27 18:44:07,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3759 conditions, 1080 events. 558/1080 cut-off events. For 3398/3398 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5889 event pairs, 144 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 3728. Up to 873 conditions per place. [2024-06-27 18:44:07,729 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 74 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-27 18:44:07,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 739 flow [2024-06-27 18:44:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 18:44:07,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:44:07,732 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 471 flow. Second operand 7 states and 126 transitions. [2024-06-27 18:44:07,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 739 flow [2024-06-27 18:44:07,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 691 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:07,741 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 472 flow [2024-06-27 18:44:07,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-06-27 18:44:07,742 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2024-06-27 18:44:07,742 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 472 flow [2024-06-27 18:44:07,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:07,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:07,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:07,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:44:07,743 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 18:44:07,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:07,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1316929662, now seen corresponding path program 3 times [2024-06-27 18:44:07,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:07,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474615335] [2024-06-27 18:44:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:07,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:08,342 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 18:44:08,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474615335] [2024-06-27 18:44:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474615335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:08,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:08,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:08,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670069988] [2024-06-27 18:44:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:08,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:08,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:08,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:08,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:08,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 472 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:08,833 INFO L124 PetriNetUnfolderBase]: 580/1129 cut-off events. [2024-06-27 18:44:08,833 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2024-06-27 18:44:08,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3871 conditions, 1129 events. 580/1129 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6238 event pairs, 148 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 3839. Up to 826 conditions per place. [2024-06-27 18:44:08,843 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 65 selfloop transitions, 26 changer transitions 0/99 dead transitions. [2024-06-27 18:44:08,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 99 transitions, 746 flow [2024-06-27 18:44:08,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:08,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 18:44:08,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-27 18:44:08,845 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 472 flow. Second operand 7 states and 130 transitions. [2024-06-27 18:44:08,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 99 transitions, 746 flow [2024-06-27 18:44:08,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 99 transitions, 713 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:08,852 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 516 flow [2024-06-27 18:44:08,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=516, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-06-27 18:44:08,853 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-27 18:44:08,853 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 516 flow [2024-06-27 18:44:08,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:08,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:08,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:08,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:44:08,854 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 18:44:08,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:08,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1191991112, now seen corresponding path program 4 times [2024-06-27 18:44:08,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:08,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263584973] [2024-06-27 18:44:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:08,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:09,446 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 18:44:09,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:09,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263584973] [2024-06-27 18:44:09,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263584973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:09,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:09,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545358548] [2024-06-27 18:44:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:09,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:09,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:09,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:09,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 516 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:09,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:09,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:09,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:09,822 INFO L124 PetriNetUnfolderBase]: 592/1166 cut-off events. [2024-06-27 18:44:09,822 INFO L125 PetriNetUnfolderBase]: For 4245/4251 co-relation queries the response was YES. [2024-06-27 18:44:09,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1166 events. 592/1166 cut-off events. For 4245/4251 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6483 event pairs, 143 based on Foata normal form. 3/1121 useless extension candidates. Maximal degree in co-relation 4115. Up to 803 conditions per place. [2024-06-27 18:44:09,833 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 63 selfloop transitions, 30 changer transitions 0/101 dead transitions. [2024-06-27 18:44:09,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 101 transitions, 802 flow [2024-06-27 18:44:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 18:44:09,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-27 18:44:09,834 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 516 flow. Second operand 7 states and 130 transitions. [2024-06-27 18:44:09,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 101 transitions, 802 flow [2024-06-27 18:44:09,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 741 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:09,842 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 544 flow [2024-06-27 18:44:09,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-06-27 18:44:09,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-27 18:44:09,843 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 544 flow [2024-06-27 18:44:09,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:09,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:09,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:09,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:44:09,844 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 18:44:09,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash 527542134, now seen corresponding path program 2 times [2024-06-27 18:44:09,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:09,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145714374] [2024-06-27 18:44:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:09,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:10,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145714374] [2024-06-27 18:44:10,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145714374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:10,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:10,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065023281] [2024-06-27 18:44:10,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:10,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:10,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:10,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:10,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 544 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:10,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:10,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:10,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:11,003 INFO L124 PetriNetUnfolderBase]: 603/1198 cut-off events. [2024-06-27 18:44:11,004 INFO L125 PetriNetUnfolderBase]: For 4693/4699 co-relation queries the response was YES. [2024-06-27 18:44:11,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4324 conditions, 1198 events. 603/1198 cut-off events. For 4693/4699 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6724 event pairs, 140 based on Foata normal form. 5/1152 useless extension candidates. Maximal degree in co-relation 4290. Up to 923 conditions per place. [2024-06-27 18:44:11,015 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 77 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2024-06-27 18:44:11,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 832 flow [2024-06-27 18:44:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 18:44:11,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:44:11,017 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 544 flow. Second operand 7 states and 126 transitions. [2024-06-27 18:44:11,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 832 flow [2024-06-27 18:44:11,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 103 transitions, 759 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:11,028 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 530 flow [2024-06-27 18:44:11,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2024-06-27 18:44:11,029 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-27 18:44:11,029 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 530 flow [2024-06-27 18:44:11,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:11,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:11,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:11,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:44:11,030 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 18:44:11,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash 527838804, now seen corresponding path program 3 times [2024-06-27 18:44:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:11,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687543310] [2024-06-27 18:44:11,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:11,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:11,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:11,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687543310] [2024-06-27 18:44:11,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687543310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:11,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:11,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:11,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889571360] [2024-06-27 18:44:11,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:11,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:11,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:11,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:11,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:11,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:11,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 530 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:11,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:11,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:11,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:12,133 INFO L124 PetriNetUnfolderBase]: 604/1198 cut-off events. [2024-06-27 18:44:12,134 INFO L125 PetriNetUnfolderBase]: For 4817/4823 co-relation queries the response was YES. [2024-06-27 18:44:12,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 1198 events. 604/1198 cut-off events. For 4817/4823 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6749 event pairs, 140 based on Foata normal form. 5/1154 useless extension candidates. Maximal degree in co-relation 4262. Up to 892 conditions per place. [2024-06-27 18:44:12,150 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 76 selfloop transitions, 23 changer transitions 0/107 dead transitions. [2024-06-27 18:44:12,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 107 transitions, 840 flow [2024-06-27 18:44:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 18:44:12,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-27 18:44:12,152 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 530 flow. Second operand 7 states and 127 transitions. [2024-06-27 18:44:12,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 107 transitions, 840 flow [2024-06-27 18:44:12,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 797 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:12,161 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 581 flow [2024-06-27 18:44:12,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2024-06-27 18:44:12,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-06-27 18:44:12,162 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 581 flow [2024-06-27 18:44:12,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:12,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:12,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:12,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:44:12,163 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 18:44:12,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:12,163 INFO L85 PathProgramCache]: Analyzing trace with hash 608356995, now seen corresponding path program 1 times [2024-06-27 18:44:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:12,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346829091] [2024-06-27 18:44:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:12,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:12,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:12,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346829091] [2024-06-27 18:44:12,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346829091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:12,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:12,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:44:12,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224635231] [2024-06-27 18:44:12,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:12,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:44:12,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:12,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:44:12,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:44:13,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:13,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 581 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:13,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:13,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:13,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:13,431 INFO L124 PetriNetUnfolderBase]: 633/1237 cut-off events. [2024-06-27 18:44:13,432 INFO L125 PetriNetUnfolderBase]: For 5761/5761 co-relation queries the response was YES. [2024-06-27 18:44:13,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4670 conditions, 1237 events. 633/1237 cut-off events. For 5761/5761 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6998 event pairs, 163 based on Foata normal form. 1/1192 useless extension candidates. Maximal degree in co-relation 4633. Up to 944 conditions per place. [2024-06-27 18:44:13,442 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 80 selfloop transitions, 38 changer transitions 0/126 dead transitions. [2024-06-27 18:44:13,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 126 transitions, 1073 flow [2024-06-27 18:44:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:44:13,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:44:13,444 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 581 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:44:13,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 126 transitions, 1073 flow [2024-06-27 18:44:13,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 126 transitions, 1035 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:13,455 INFO L231 Difference]: Finished difference. Result has 94 places, 107 transitions, 887 flow [2024-06-27 18:44:13,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=887, PETRI_PLACES=94, PETRI_TRANSITIONS=107} [2024-06-27 18:44:13,455 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-27 18:44:13,455 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 107 transitions, 887 flow [2024-06-27 18:44:13,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:13,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:13,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:44:13,456 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 18:44:13,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash -711493459, now seen corresponding path program 2 times [2024-06-27 18:44:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772377373] [2024-06-27 18:44:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:14,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:14,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772377373] [2024-06-27 18:44:14,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772377373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:14,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:14,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:14,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719038949] [2024-06-27 18:44:14,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:14,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:14,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:14,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:14,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 107 transitions, 887 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:14,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:14,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:14,810 INFO L124 PetriNetUnfolderBase]: 664/1297 cut-off events. [2024-06-27 18:44:14,810 INFO L125 PetriNetUnfolderBase]: For 6920/6920 co-relation queries the response was YES. [2024-06-27 18:44:14,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5254 conditions, 1297 events. 664/1297 cut-off events. For 6920/6920 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7445 event pairs, 146 based on Foata normal form. 1/1254 useless extension candidates. Maximal degree in co-relation 5210. Up to 976 conditions per place. [2024-06-27 18:44:14,821 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 92 selfloop transitions, 53 changer transitions 0/153 dead transitions. [2024-06-27 18:44:14,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 153 transitions, 1426 flow [2024-06-27 18:44:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:44:14,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:44:14,823 INFO L175 Difference]: Start difference. First operand has 94 places, 107 transitions, 887 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:44:14,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 153 transitions, 1426 flow [2024-06-27 18:44:14,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 153 transitions, 1362 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-06-27 18:44:14,839 INFO L231 Difference]: Finished difference. Result has 106 places, 121 transitions, 1116 flow [2024-06-27 18:44:14,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1116, PETRI_PLACES=106, PETRI_TRANSITIONS=121} [2024-06-27 18:44:14,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-27 18:44:14,840 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 121 transitions, 1116 flow [2024-06-27 18:44:14,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:14,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:14,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:14,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:44:14,841 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 18:44:14,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1324339048, now seen corresponding path program 1 times [2024-06-27 18:44:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:14,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069329222] [2024-06-27 18:44:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:14,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:15,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:15,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069329222] [2024-06-27 18:44:15,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069329222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:15,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:15,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:15,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268653870] [2024-06-27 18:44:15,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:15,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:15,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:15,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:15,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:15,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:15,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 121 transitions, 1116 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:15,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:15,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:15,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:16,046 INFO L124 PetriNetUnfolderBase]: 686/1332 cut-off events. [2024-06-27 18:44:16,046 INFO L125 PetriNetUnfolderBase]: For 8651/8651 co-relation queries the response was YES. [2024-06-27 18:44:16,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5699 conditions, 1332 events. 686/1332 cut-off events. For 8651/8651 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7668 event pairs, 147 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 5649. Up to 982 conditions per place. [2024-06-27 18:44:16,056 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 105 selfloop transitions, 39 changer transitions 0/152 dead transitions. [2024-06-27 18:44:16,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 152 transitions, 1542 flow [2024-06-27 18:44:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:44:16,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:44:16,058 INFO L175 Difference]: Start difference. First operand has 106 places, 121 transitions, 1116 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:44:16,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 152 transitions, 1542 flow [2024-06-27 18:44:16,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 152 transitions, 1431 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:16,076 INFO L231 Difference]: Finished difference. Result has 109 places, 124 transitions, 1122 flow [2024-06-27 18:44:16,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1122, PETRI_PLACES=109, PETRI_TRANSITIONS=124} [2024-06-27 18:44:16,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-27 18:44:16,077 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 124 transitions, 1122 flow [2024-06-27 18:44:16,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:16,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:16,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:16,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:44:16,077 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 18:44:16,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2124844364, now seen corresponding path program 2 times [2024-06-27 18:44:16,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:16,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980298921] [2024-06-27 18:44:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980298921] [2024-06-27 18:44:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980298921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:16,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:16,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:16,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178099368] [2024-06-27 18:44:16,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:16,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:16,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:16,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:16,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 124 transitions, 1122 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:16,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:16,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:16,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:17,336 INFO L124 PetriNetUnfolderBase]: 723/1395 cut-off events. [2024-06-27 18:44:17,336 INFO L125 PetriNetUnfolderBase]: For 9795/9795 co-relation queries the response was YES. [2024-06-27 18:44:17,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6176 conditions, 1395 events. 723/1395 cut-off events. For 9795/9795 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8054 event pairs, 146 based on Foata normal form. 1/1349 useless extension candidates. Maximal degree in co-relation 6125. Up to 956 conditions per place. [2024-06-27 18:44:17,348 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 103 selfloop transitions, 45 changer transitions 0/156 dead transitions. [2024-06-27 18:44:17,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 156 transitions, 1606 flow [2024-06-27 18:44:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:44:17,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 18:44:17,350 INFO L175 Difference]: Start difference. First operand has 109 places, 124 transitions, 1122 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:44:17,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 156 transitions, 1606 flow [2024-06-27 18:44:17,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 156 transitions, 1513 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:17,369 INFO L231 Difference]: Finished difference. Result has 112 places, 129 transitions, 1192 flow [2024-06-27 18:44:17,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1192, PETRI_PLACES=112, PETRI_TRANSITIONS=129} [2024-06-27 18:44:17,370 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-27 18:44:17,373 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 129 transitions, 1192 flow [2024-06-27 18:44:17,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:17,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:17,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:17,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:44:17,373 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 18:44:17,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:17,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2124844085, now seen corresponding path program 1 times [2024-06-27 18:44:17,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:17,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723716566] [2024-06-27 18:44:17,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:17,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:18,151 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 18:44:18,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:18,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723716566] [2024-06-27 18:44:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723716566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:18,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481264851] [2024-06-27 18:44:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:18,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:18,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:18,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:18,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 129 transitions, 1192 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:18,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:18,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:18,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:18,554 INFO L124 PetriNetUnfolderBase]: 745/1433 cut-off events. [2024-06-27 18:44:18,554 INFO L125 PetriNetUnfolderBase]: For 11522/11522 co-relation queries the response was YES. [2024-06-27 18:44:18,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 1433 events. 745/1433 cut-off events. For 11522/11522 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8317 event pairs, 153 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 6598. Up to 1137 conditions per place. [2024-06-27 18:44:18,565 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 129 selfloop transitions, 22 changer transitions 0/159 dead transitions. [2024-06-27 18:44:18,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 159 transitions, 1628 flow [2024-06-27 18:44:18,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:18,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 18:44:18,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:44:18,567 INFO L175 Difference]: Start difference. First operand has 112 places, 129 transitions, 1192 flow. Second operand 8 states and 144 transitions. [2024-06-27 18:44:18,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 159 transitions, 1628 flow [2024-06-27 18:44:18,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 159 transitions, 1568 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:18,589 INFO L231 Difference]: Finished difference. Result has 116 places, 131 transitions, 1203 flow [2024-06-27 18:44:18,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1203, PETRI_PLACES=116, PETRI_TRANSITIONS=131} [2024-06-27 18:44:18,590 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-27 18:44:18,590 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 131 transitions, 1203 flow [2024-06-27 18:44:18,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:18,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:18,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:18,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:44:18,591 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 18:44:18,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2124851804, now seen corresponding path program 3 times [2024-06-27 18:44:18,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:18,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587197819] [2024-06-27 18:44:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:18,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:19,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:19,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587197819] [2024-06-27 18:44:19,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587197819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:19,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:19,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201575107] [2024-06-27 18:44:19,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:19,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:19,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:19,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 131 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:19,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:19,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:19,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:19,820 INFO L124 PetriNetUnfolderBase]: 741/1423 cut-off events. [2024-06-27 18:44:19,821 INFO L125 PetriNetUnfolderBase]: For 11599/11599 co-relation queries the response was YES. [2024-06-27 18:44:19,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6698 conditions, 1423 events. 741/1423 cut-off events. For 11599/11599 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8245 event pairs, 150 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 6643. Up to 1042 conditions per place. [2024-06-27 18:44:19,831 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 111 selfloop transitions, 39 changer transitions 0/158 dead transitions. [2024-06-27 18:44:19,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 158 transitions, 1621 flow [2024-06-27 18:44:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:44:19,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:44:19,833 INFO L175 Difference]: Start difference. First operand has 116 places, 131 transitions, 1203 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:44:19,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 158 transitions, 1621 flow [2024-06-27 18:44:19,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 158 transitions, 1552 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:19,858 INFO L231 Difference]: Finished difference. Result has 118 places, 131 transitions, 1218 flow [2024-06-27 18:44:19,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1218, PETRI_PLACES=118, PETRI_TRANSITIONS=131} [2024-06-27 18:44:19,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-27 18:44:19,859 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 131 transitions, 1218 flow [2024-06-27 18:44:19,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:19,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:19,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:19,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:44:19,860 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 18:44:19,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash -826061365, now seen corresponding path program 2 times [2024-06-27 18:44:19,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125581941] [2024-06-27 18:44:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:19,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125581941] [2024-06-27 18:44:20,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125581941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:20,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:20,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:20,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549291408] [2024-06-27 18:44:20,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:20,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:20,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:20,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:20,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 131 transitions, 1218 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:20,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:20,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:20,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:21,150 INFO L124 PetriNetUnfolderBase]: 763/1477 cut-off events. [2024-06-27 18:44:21,151 INFO L125 PetriNetUnfolderBase]: For 12318/12318 co-relation queries the response was YES. [2024-06-27 18:44:21,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6904 conditions, 1477 events. 763/1477 cut-off events. For 12318/12318 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8592 event pairs, 136 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 6848. Up to 1145 conditions per place. [2024-06-27 18:44:21,163 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 129 selfloop transitions, 24 changer transitions 0/161 dead transitions. [2024-06-27 18:44:21,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 161 transitions, 1668 flow [2024-06-27 18:44:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 18:44:21,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:44:21,165 INFO L175 Difference]: Start difference. First operand has 118 places, 131 transitions, 1218 flow. Second operand 8 states and 144 transitions. [2024-06-27 18:44:21,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 161 transitions, 1668 flow [2024-06-27 18:44:21,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 161 transitions, 1572 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:21,190 INFO L231 Difference]: Finished difference. Result has 119 places, 133 transitions, 1201 flow [2024-06-27 18:44:21,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1201, PETRI_PLACES=119, PETRI_TRANSITIONS=133} [2024-06-27 18:44:21,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-27 18:44:21,191 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 133 transitions, 1201 flow [2024-06-27 18:44:21,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:21,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:21,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:21,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:44:21,192 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 18:44:21,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:21,193 INFO L85 PathProgramCache]: Analyzing trace with hash -826061644, now seen corresponding path program 4 times [2024-06-27 18:44:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:21,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97954770] [2024-06-27 18:44:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:21,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:22,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97954770] [2024-06-27 18:44:22,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97954770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:22,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:22,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428605792] [2024-06-27 18:44:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:22,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:22,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:22,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:22,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:22,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:22,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 133 transitions, 1201 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:22,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:22,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:22,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:22,582 INFO L124 PetriNetUnfolderBase]: 800/1524 cut-off events. [2024-06-27 18:44:22,582 INFO L125 PetriNetUnfolderBase]: For 13554/13554 co-relation queries the response was YES. [2024-06-27 18:44:22,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7256 conditions, 1524 events. 800/1524 cut-off events. For 13554/13554 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8815 event pairs, 138 based on Foata normal form. 1/1471 useless extension candidates. Maximal degree in co-relation 7199. Up to 1067 conditions per place. [2024-06-27 18:44:22,596 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 113 selfloop transitions, 45 changer transitions 0/166 dead transitions. [2024-06-27 18:44:22,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 166 transitions, 1747 flow [2024-06-27 18:44:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:22,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:44:22,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 18:44:22,598 INFO L175 Difference]: Start difference. First operand has 119 places, 133 transitions, 1201 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:44:22,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 166 transitions, 1747 flow [2024-06-27 18:44:22,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 166 transitions, 1684 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:22,626 INFO L231 Difference]: Finished difference. Result has 122 places, 138 transitions, 1310 flow [2024-06-27 18:44:22,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1310, PETRI_PLACES=122, PETRI_TRANSITIONS=138} [2024-06-27 18:44:22,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 81 predicate places. [2024-06-27 18:44:22,627 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 138 transitions, 1310 flow [2024-06-27 18:44:22,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:22,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:22,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:22,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:44:22,628 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 18:44:22,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:22,628 INFO L85 PathProgramCache]: Analyzing trace with hash -826069084, now seen corresponding path program 5 times [2024-06-27 18:44:22,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:22,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346689191] [2024-06-27 18:44:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:22,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:23,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:23,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346689191] [2024-06-27 18:44:23,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346689191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:23,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:23,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:23,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641828818] [2024-06-27 18:44:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:23,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:23,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:23,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:23,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:23,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:23,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 138 transitions, 1310 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:23,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:23,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:23,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:23,899 INFO L124 PetriNetUnfolderBase]: 796/1524 cut-off events. [2024-06-27 18:44:23,899 INFO L125 PetriNetUnfolderBase]: For 14996/14996 co-relation queries the response was YES. [2024-06-27 18:44:23,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 1524 events. 796/1524 cut-off events. For 14996/14996 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8847 event pairs, 140 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 7418. Up to 1085 conditions per place. [2024-06-27 18:44:23,909 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 115 selfloop transitions, 42 changer transitions 0/165 dead transitions. [2024-06-27 18:44:23,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 165 transitions, 1756 flow [2024-06-27 18:44:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 18:44:23,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:44:23,910 INFO L175 Difference]: Start difference. First operand has 122 places, 138 transitions, 1310 flow. Second operand 8 states and 148 transitions. [2024-06-27 18:44:23,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 165 transitions, 1756 flow [2024-06-27 18:44:23,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 165 transitions, 1659 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:23,942 INFO L231 Difference]: Finished difference. Result has 126 places, 138 transitions, 1303 flow [2024-06-27 18:44:23,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1303, PETRI_PLACES=126, PETRI_TRANSITIONS=138} [2024-06-27 18:44:23,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-06-27 18:44:23,943 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 138 transitions, 1303 flow [2024-06-27 18:44:23,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:23,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:23,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:23,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:44:23,944 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 18:44:23,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash -816864595, now seen corresponding path program 3 times [2024-06-27 18:44:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393814943] [2024-06-27 18:44:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:23,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393814943] [2024-06-27 18:44:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393814943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:24,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:24,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:24,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919857135] [2024-06-27 18:44:24,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:24,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:24,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:24,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:24,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:24,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:24,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 138 transitions, 1303 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:24,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:24,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:24,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:25,111 INFO L124 PetriNetUnfolderBase]: 824/1566 cut-off events. [2024-06-27 18:44:25,111 INFO L125 PetriNetUnfolderBase]: For 15727/15727 co-relation queries the response was YES. [2024-06-27 18:44:25,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 1566 events. 824/1566 cut-off events. For 15727/15727 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9059 event pairs, 131 based on Foata normal form. 2/1515 useless extension candidates. Maximal degree in co-relation 7709. Up to 1110 conditions per place. [2024-06-27 18:44:25,121 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 131 selfloop transitions, 34 changer transitions 0/173 dead transitions. [2024-06-27 18:44:25,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 173 transitions, 1859 flow [2024-06-27 18:44:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:44:25,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 18:44:25,122 INFO L175 Difference]: Start difference. First operand has 126 places, 138 transitions, 1303 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:44:25,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 173 transitions, 1859 flow [2024-06-27 18:44:25,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 173 transitions, 1768 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:25,151 INFO L231 Difference]: Finished difference. Result has 127 places, 142 transitions, 1341 flow [2024-06-27 18:44:25,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1341, PETRI_PLACES=127, PETRI_TRANSITIONS=142} [2024-06-27 18:44:25,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-27 18:44:25,152 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 142 transitions, 1341 flow [2024-06-27 18:44:25,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:25,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:25,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:25,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:44:25,153 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:25,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash -816864874, now seen corresponding path program 6 times [2024-06-27 18:44:25,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:25,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880524671] [2024-06-27 18:44:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:25,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:25,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880524671] [2024-06-27 18:44:25,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880524671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:25,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:25,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:25,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471549992] [2024-06-27 18:44:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:25,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:25,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:25,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:25,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:25,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 142 transitions, 1341 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:25,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:25,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:25,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:26,274 INFO L124 PetriNetUnfolderBase]: 825/1595 cut-off events. [2024-06-27 18:44:26,274 INFO L125 PetriNetUnfolderBase]: For 16311/16311 co-relation queries the response was YES. [2024-06-27 18:44:26,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7860 conditions, 1595 events. 825/1595 cut-off events. For 16311/16311 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9460 event pairs, 150 based on Foata normal form. 1/1532 useless extension candidates. Maximal degree in co-relation 7798. Up to 998 conditions per place. [2024-06-27 18:44:26,284 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 104 selfloop transitions, 58 changer transitions 0/170 dead transitions. [2024-06-27 18:44:26,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 170 transitions, 1811 flow [2024-06-27 18:44:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:44:26,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 18:44:26,285 INFO L175 Difference]: Start difference. First operand has 127 places, 142 transitions, 1341 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:44:26,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 170 transitions, 1811 flow [2024-06-27 18:44:26,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 170 transitions, 1753 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:26,306 INFO L231 Difference]: Finished difference. Result has 131 places, 144 transitions, 1436 flow [2024-06-27 18:44:26,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1436, PETRI_PLACES=131, PETRI_TRANSITIONS=144} [2024-06-27 18:44:26,307 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-27 18:44:26,307 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 144 transitions, 1436 flow [2024-06-27 18:44:26,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:26,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:26,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:26,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:44:26,308 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 18:44:26,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -816855295, now seen corresponding path program 4 times [2024-06-27 18:44:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:26,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758169779] [2024-06-27 18:44:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:26,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:27,054 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 18:44:27,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:27,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758169779] [2024-06-27 18:44:27,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758169779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:27,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:27,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:27,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674963499] [2024-06-27 18:44:27,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:27,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:27,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:27,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:27,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:27,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:27,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 144 transitions, 1436 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:27,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:27,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:27,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:27,512 INFO L124 PetriNetUnfolderBase]: 821/1576 cut-off events. [2024-06-27 18:44:27,512 INFO L125 PetriNetUnfolderBase]: For 16811/16811 co-relation queries the response was YES. [2024-06-27 18:44:27,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8036 conditions, 1576 events. 821/1576 cut-off events. For 16811/16811 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9358 event pairs, 164 based on Foata normal form. 2/1521 useless extension candidates. Maximal degree in co-relation 7972. Up to 1252 conditions per place. [2024-06-27 18:44:27,522 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 149 selfloop transitions, 14 changer transitions 0/171 dead transitions. [2024-06-27 18:44:27,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 171 transitions, 1870 flow [2024-06-27 18:44:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:27,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:44:27,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 18:44:27,523 INFO L175 Difference]: Start difference. First operand has 131 places, 144 transitions, 1436 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:44:27,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 171 transitions, 1870 flow [2024-06-27 18:44:27,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 171 transitions, 1713 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:27,575 INFO L231 Difference]: Finished difference. Result has 133 places, 144 transitions, 1312 flow [2024-06-27 18:44:27,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1312, PETRI_PLACES=133, PETRI_TRANSITIONS=144} [2024-06-27 18:44:27,576 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-27 18:44:27,576 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 144 transitions, 1312 flow [2024-06-27 18:44:27,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:27,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:27,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:27,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:44:27,577 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 18:44:27,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash -354613547, now seen corresponding path program 3 times [2024-06-27 18:44:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766728699] [2024-06-27 18:44:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:28,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:28,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766728699] [2024-06-27 18:44:28,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766728699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:28,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:28,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:28,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340739122] [2024-06-27 18:44:28,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:28,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:28,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:28,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:28,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 144 transitions, 1312 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:28,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:28,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:28,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:28,774 INFO L124 PetriNetUnfolderBase]: 864/1656 cut-off events. [2024-06-27 18:44:28,774 INFO L125 PetriNetUnfolderBase]: For 16760/16760 co-relation queries the response was YES. [2024-06-27 18:44:28,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8095 conditions, 1656 events. 864/1656 cut-off events. For 16760/16760 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 10036 event pairs, 180 based on Foata normal form. 1/1603 useless extension candidates. Maximal degree in co-relation 8030. Up to 1277 conditions per place. [2024-06-27 18:44:28,784 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 121 selfloop transitions, 64 changer transitions 0/193 dead transitions. [2024-06-27 18:44:28,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 193 transitions, 1986 flow [2024-06-27 18:44:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:44:28,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:44:28,787 INFO L175 Difference]: Start difference. First operand has 133 places, 144 transitions, 1312 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:44:28,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 193 transitions, 1986 flow [2024-06-27 18:44:28,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 193 transitions, 1931 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:28,810 INFO L231 Difference]: Finished difference. Result has 136 places, 166 transitions, 1673 flow [2024-06-27 18:44:28,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1673, PETRI_PLACES=136, PETRI_TRANSITIONS=166} [2024-06-27 18:44:28,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-27 18:44:28,811 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 166 transitions, 1673 flow [2024-06-27 18:44:28,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:28,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:28,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:28,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:44:28,812 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 18:44:28,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1221173037, now seen corresponding path program 4 times [2024-06-27 18:44:28,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:28,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405795872] [2024-06-27 18:44:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:28,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:29,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:29,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405795872] [2024-06-27 18:44:29,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405795872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:29,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:29,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137469810] [2024-06-27 18:44:29,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:29,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:29,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:29,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 166 transitions, 1673 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:29,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:29,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:29,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:30,004 INFO L124 PetriNetUnfolderBase]: 895/1712 cut-off events. [2024-06-27 18:44:30,004 INFO L125 PetriNetUnfolderBase]: For 18912/18912 co-relation queries the response was YES. [2024-06-27 18:44:30,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8699 conditions, 1712 events. 895/1712 cut-off events. For 18912/18912 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10475 event pairs, 210 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 8632. Up to 1335 conditions per place. [2024-06-27 18:44:30,015 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 137 selfloop transitions, 64 changer transitions 0/209 dead transitions. [2024-06-27 18:44:30,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 209 transitions, 2402 flow [2024-06-27 18:44:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:44:30,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 18:44:30,016 INFO L175 Difference]: Start difference. First operand has 136 places, 166 transitions, 1673 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:44:30,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 209 transitions, 2402 flow [2024-06-27 18:44:30,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 209 transitions, 2275 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:30,046 INFO L231 Difference]: Finished difference. Result has 142 places, 183 transitions, 1960 flow [2024-06-27 18:44:30,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1960, PETRI_PLACES=142, PETRI_TRANSITIONS=183} [2024-06-27 18:44:30,047 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-27 18:44:30,047 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 183 transitions, 1960 flow [2024-06-27 18:44:30,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:30,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:30,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:30,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:44:30,048 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 18:44:30,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:30,048 INFO L85 PathProgramCache]: Analyzing trace with hash -816526261, now seen corresponding path program 1 times [2024-06-27 18:44:30,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:30,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375932564] [2024-06-27 18:44:30,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:30,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375932564] [2024-06-27 18:44:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375932564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:31,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:31,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:31,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930027657] [2024-06-27 18:44:31,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:31,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:31,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:31,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:31,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:44:31,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 183 transitions, 1960 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 18:44:31,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:31,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:44:31,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:31,501 INFO L124 PetriNetUnfolderBase]: 827/1624 cut-off events. [2024-06-27 18:44:31,501 INFO L125 PetriNetUnfolderBase]: For 19339/19356 co-relation queries the response was YES. [2024-06-27 18:44:31,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8225 conditions, 1624 events. 827/1624 cut-off events. For 19339/19356 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9990 event pairs, 188 based on Foata normal form. 19/1585 useless extension candidates. Maximal degree in co-relation 8156. Up to 1226 conditions per place. [2024-06-27 18:44:31,512 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 175 selfloop transitions, 13 changer transitions 0/211 dead transitions. [2024-06-27 18:44:31,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 211 transitions, 2462 flow [2024-06-27 18:44:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:44:31,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 18:44:31,513 INFO L175 Difference]: Start difference. First operand has 142 places, 183 transitions, 1960 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:44:31,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 211 transitions, 2462 flow [2024-06-27 18:44:31,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 211 transitions, 2358 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:31,541 INFO L231 Difference]: Finished difference. Result has 145 places, 184 transitions, 1896 flow [2024-06-27 18:44:31,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1896, PETRI_PLACES=145, PETRI_TRANSITIONS=184} [2024-06-27 18:44:31,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 18:44:31,541 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 184 transitions, 1896 flow [2024-06-27 18:44:31,542 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 18:44:31,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:31,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:31,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:44:31,542 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 18:44:31,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1898915465, now seen corresponding path program 1 times [2024-06-27 18:44:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:31,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790471747] [2024-06-27 18:44:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:32,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790471747] [2024-06-27 18:44:32,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790471747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:32,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:32,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:32,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516302822] [2024-06-27 18:44:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:32,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:32,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 184 transitions, 1896 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:32,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:32,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:32,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:33,035 INFO L124 PetriNetUnfolderBase]: 910/1757 cut-off events. [2024-06-27 18:44:33,036 INFO L125 PetriNetUnfolderBase]: For 19876/19876 co-relation queries the response was YES. [2024-06-27 18:44:33,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 1757 events. 910/1757 cut-off events. For 19876/19876 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10823 event pairs, 184 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 8787. Up to 1255 conditions per place. [2024-06-27 18:44:33,046 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 120 selfloop transitions, 90 changer transitions 0/218 dead transitions. [2024-06-27 18:44:33,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 218 transitions, 2522 flow [2024-06-27 18:44:33,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:44:33,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:44:33,050 INFO L175 Difference]: Start difference. First operand has 145 places, 184 transitions, 1896 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:44:33,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 218 transitions, 2522 flow [2024-06-27 18:44:33,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 218 transitions, 2492 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:33,083 INFO L231 Difference]: Finished difference. Result has 149 places, 188 transitions, 2185 flow [2024-06-27 18:44:33,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2185, PETRI_PLACES=149, PETRI_TRANSITIONS=188} [2024-06-27 18:44:33,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-27 18:44:33,083 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 188 transitions, 2185 flow [2024-06-27 18:44:33,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:33,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:33,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:33,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:44:33,084 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 18:44:33,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1895160807, now seen corresponding path program 1 times [2024-06-27 18:44:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232209053] [2024-06-27 18:44:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:33,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232209053] [2024-06-27 18:44:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232209053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:33,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:33,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899740041] [2024-06-27 18:44:33,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:33,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:33,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:33,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:33,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:33,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 188 transitions, 2185 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:33,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:33,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:33,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:34,344 INFO L124 PetriNetUnfolderBase]: 932/1767 cut-off events. [2024-06-27 18:44:34,345 INFO L125 PetriNetUnfolderBase]: For 23083/23083 co-relation queries the response was YES. [2024-06-27 18:44:34,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9394 conditions, 1767 events. 932/1767 cut-off events. For 23083/23083 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10782 event pairs, 183 based on Foata normal form. 2/1715 useless extension candidates. Maximal degree in co-relation 9322. Up to 1340 conditions per place. [2024-06-27 18:44:34,356 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 169 selfloop transitions, 45 changer transitions 0/222 dead transitions. [2024-06-27 18:44:34,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 222 transitions, 2799 flow [2024-06-27 18:44:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:44:34,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:44:34,361 INFO L175 Difference]: Start difference. First operand has 149 places, 188 transitions, 2185 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:44:34,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 222 transitions, 2799 flow [2024-06-27 18:44:34,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 222 transitions, 2657 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:34,401 INFO L231 Difference]: Finished difference. Result has 153 places, 191 transitions, 2189 flow [2024-06-27 18:44:34,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2189, PETRI_PLACES=153, PETRI_TRANSITIONS=191} [2024-06-27 18:44:34,402 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-27 18:44:34,402 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 191 transitions, 2189 flow [2024-06-27 18:44:34,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:34,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:34,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:34,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:44:34,402 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 18:44:34,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:34,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1895161055, now seen corresponding path program 2 times [2024-06-27 18:44:34,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:34,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930009818] [2024-06-27 18:44:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:34,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:35,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:35,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930009818] [2024-06-27 18:44:35,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930009818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:35,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:35,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:35,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910441064] [2024-06-27 18:44:35,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:35,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:35,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:35,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:35,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:35,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 191 transitions, 2189 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:35,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:35,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:35,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:36,011 INFO L124 PetriNetUnfolderBase]: 943/1788 cut-off events. [2024-06-27 18:44:36,012 INFO L125 PetriNetUnfolderBase]: For 24010/24010 co-relation queries the response was YES. [2024-06-27 18:44:36,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9761 conditions, 1788 events. 943/1788 cut-off events. For 24010/24010 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10980 event pairs, 185 based on Foata normal form. 1/1736 useless extension candidates. Maximal degree in co-relation 9687. Up to 1368 conditions per place. [2024-06-27 18:44:36,024 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 172 selfloop transitions, 44 changer transitions 0/224 dead transitions. [2024-06-27 18:44:36,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 224 transitions, 2811 flow [2024-06-27 18:44:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:36,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:44:36,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:44:36,026 INFO L175 Difference]: Start difference. First operand has 153 places, 191 transitions, 2189 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:44:36,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 224 transitions, 2811 flow [2024-06-27 18:44:36,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 224 transitions, 2687 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:36,103 INFO L231 Difference]: Finished difference. Result has 155 places, 193 transitions, 2208 flow [2024-06-27 18:44:36,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2208, PETRI_PLACES=155, PETRI_TRANSITIONS=193} [2024-06-27 18:44:36,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-27 18:44:36,104 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 193 transitions, 2208 flow [2024-06-27 18:44:36,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:36,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:36,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:36,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:44:36,104 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 18:44:36,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:36,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1891280253, now seen corresponding path program 3 times [2024-06-27 18:44:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:36,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606206034] [2024-06-27 18:44:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:36,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:37,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:37,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606206034] [2024-06-27 18:44:37,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606206034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:37,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:37,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121865390] [2024-06-27 18:44:37,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:37,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:37,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:37,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:37,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 193 transitions, 2208 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:37,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:37,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:37,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:37,726 INFO L124 PetriNetUnfolderBase]: 954/1815 cut-off events. [2024-06-27 18:44:37,726 INFO L125 PetriNetUnfolderBase]: For 25703/25703 co-relation queries the response was YES. [2024-06-27 18:44:37,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9936 conditions, 1815 events. 954/1815 cut-off events. For 25703/25703 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11221 event pairs, 183 based on Foata normal form. 1/1761 useless extension candidates. Maximal degree in co-relation 9861. Up to 1360 conditions per place. [2024-06-27 18:44:37,739 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 175 selfloop transitions, 44 changer transitions 0/227 dead transitions. [2024-06-27 18:44:37,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 227 transitions, 2864 flow [2024-06-27 18:44:37,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:37,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:44:37,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:44:37,741 INFO L175 Difference]: Start difference. First operand has 155 places, 193 transitions, 2208 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:44:37,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 227 transitions, 2864 flow [2024-06-27 18:44:37,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 227 transitions, 2737 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:37,784 INFO L231 Difference]: Finished difference. Result has 157 places, 195 transitions, 2228 flow [2024-06-27 18:44:37,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2228, PETRI_PLACES=157, PETRI_TRANSITIONS=195} [2024-06-27 18:44:37,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-27 18:44:37,785 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 195 transitions, 2228 flow [2024-06-27 18:44:37,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:37,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:37,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:37,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:44:37,785 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 18:44:37,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1891280501, now seen corresponding path program 2 times [2024-06-27 18:44:37,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:37,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309457941] [2024-06-27 18:44:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:37,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:38,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309457941] [2024-06-27 18:44:38,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309457941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:38,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:38,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:38,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142653413] [2024-06-27 18:44:38,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:38,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:38,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:38,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:38,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:38,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 195 transitions, 2228 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:38,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:38,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:38,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:39,195 INFO L124 PetriNetUnfolderBase]: 1067/2033 cut-off events. [2024-06-27 18:44:39,195 INFO L125 PetriNetUnfolderBase]: For 28747/28747 co-relation queries the response was YES. [2024-06-27 18:44:39,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11052 conditions, 2033 events. 1067/2033 cut-off events. For 28747/28747 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12924 event pairs, 196 based on Foata normal form. 2/1970 useless extension candidates. Maximal degree in co-relation 10976. Up to 1544 conditions per place. [2024-06-27 18:44:39,210 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 185 selfloop transitions, 47 changer transitions 0/240 dead transitions. [2024-06-27 18:44:39,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 240 transitions, 3017 flow [2024-06-27 18:44:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:44:39,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:44:39,212 INFO L175 Difference]: Start difference. First operand has 157 places, 195 transitions, 2228 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:44:39,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 240 transitions, 3017 flow [2024-06-27 18:44:39,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 240 transitions, 2865 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:39,266 INFO L231 Difference]: Finished difference. Result has 163 places, 209 transitions, 2385 flow [2024-06-27 18:44:39,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2385, PETRI_PLACES=163, PETRI_TRANSITIONS=209} [2024-06-27 18:44:39,266 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-27 18:44:39,266 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 209 transitions, 2385 flow [2024-06-27 18:44:39,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:39,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:39,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:39,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:44:39,267 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 18:44:39,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1750145907, now seen corresponding path program 3 times [2024-06-27 18:44:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117091129] [2024-06-27 18:44:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:39,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:40,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117091129] [2024-06-27 18:44:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117091129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:40,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:40,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:40,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621928113] [2024-06-27 18:44:40,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:40,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:40,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:40,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:40,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:40,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:40,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 209 transitions, 2385 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:40,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:40,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:40,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:40,749 INFO L124 PetriNetUnfolderBase]: 1168/2199 cut-off events. [2024-06-27 18:44:40,750 INFO L125 PetriNetUnfolderBase]: For 30416/30416 co-relation queries the response was YES. [2024-06-27 18:44:40,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12029 conditions, 2199 events. 1168/2199 cut-off events. For 30416/30416 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14009 event pairs, 200 based on Foata normal form. 1/2132 useless extension candidates. Maximal degree in co-relation 11949. Up to 1592 conditions per place. [2024-06-27 18:44:40,765 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 189 selfloop transitions, 59 changer transitions 0/256 dead transitions. [2024-06-27 18:44:40,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 256 transitions, 3222 flow [2024-06-27 18:44:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:44:40,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:44:40,766 INFO L175 Difference]: Start difference. First operand has 163 places, 209 transitions, 2385 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:44:40,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 256 transitions, 3222 flow [2024-06-27 18:44:40,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 256 transitions, 3103 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:40,821 INFO L231 Difference]: Finished difference. Result has 171 places, 223 transitions, 2544 flow [2024-06-27 18:44:40,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2544, PETRI_PLACES=171, PETRI_TRANSITIONS=223} [2024-06-27 18:44:40,821 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-27 18:44:40,821 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 223 transitions, 2544 flow [2024-06-27 18:44:40,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:40,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:40,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:40,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:44:40,822 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 18:44:40,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1750146155, now seen corresponding path program 4 times [2024-06-27 18:44:40,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:40,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065688847] [2024-06-27 18:44:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:40,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:41,856 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 18:44:41,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:41,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065688847] [2024-06-27 18:44:41,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065688847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:41,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:41,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:41,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579127707] [2024-06-27 18:44:41,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:41,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:41,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:41,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:41,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 223 transitions, 2544 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:41,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:41,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:41,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:42,483 INFO L124 PetriNetUnfolderBase]: 1179/2252 cut-off events. [2024-06-27 18:44:42,484 INFO L125 PetriNetUnfolderBase]: For 33930/33930 co-relation queries the response was YES. [2024-06-27 18:44:42,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12625 conditions, 2252 events. 1179/2252 cut-off events. For 33930/33930 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14588 event pairs, 188 based on Foata normal form. 1/2177 useless extension candidates. Maximal degree in co-relation 12542. Up to 1485 conditions per place. [2024-06-27 18:44:42,502 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 183 selfloop transitions, 65 changer transitions 0/256 dead transitions. [2024-06-27 18:44:42,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 256 transitions, 3252 flow [2024-06-27 18:44:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:44:42,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:44:42,504 INFO L175 Difference]: Start difference. First operand has 171 places, 223 transitions, 2544 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:44:42,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 256 transitions, 3252 flow [2024-06-27 18:44:42,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 256 transitions, 3174 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:42,564 INFO L231 Difference]: Finished difference. Result has 175 places, 225 transitions, 2662 flow [2024-06-27 18:44:42,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2662, PETRI_PLACES=175, PETRI_TRANSITIONS=225} [2024-06-27 18:44:42,564 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-27 18:44:42,564 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 225 transitions, 2662 flow [2024-06-27 18:44:42,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:42,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:42,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:42,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:44:42,565 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 18:44:42,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1445655809, now seen corresponding path program 4 times [2024-06-27 18:44:42,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:42,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961371988] [2024-06-27 18:44:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:42,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:43,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:43,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:43,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961371988] [2024-06-27 18:44:43,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961371988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:43,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:43,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538538286] [2024-06-27 18:44:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:43,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:43,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:43,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 225 transitions, 2662 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:43,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:43,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:43,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:43,819 INFO L124 PetriNetUnfolderBase]: 1214/2278 cut-off events. [2024-06-27 18:44:43,819 INFO L125 PetriNetUnfolderBase]: For 37891/37891 co-relation queries the response was YES. [2024-06-27 18:44:43,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13407 conditions, 2278 events. 1214/2278 cut-off events. For 37891/37891 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14576 event pairs, 182 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 13322. Up to 1439 conditions per place. [2024-06-27 18:44:43,841 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 173 selfloop transitions, 82 changer transitions 0/263 dead transitions. [2024-06-27 18:44:43,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 263 transitions, 3509 flow [2024-06-27 18:44:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:44:43,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 18:44:43,842 INFO L175 Difference]: Start difference. First operand has 175 places, 225 transitions, 2662 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:44:43,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 263 transitions, 3509 flow [2024-06-27 18:44:43,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 263 transitions, 3317 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:43,960 INFO L231 Difference]: Finished difference. Result has 178 places, 231 transitions, 2782 flow [2024-06-27 18:44:43,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2782, PETRI_PLACES=178, PETRI_TRANSITIONS=231} [2024-06-27 18:44:43,960 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-27 18:44:43,961 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 231 transitions, 2782 flow [2024-06-27 18:44:43,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:43,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:43,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:43,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:44:43,961 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 18:44:43,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:43,962 INFO L85 PathProgramCache]: Analyzing trace with hash 161894229, now seen corresponding path program 5 times [2024-06-27 18:44:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:43,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695478094] [2024-06-27 18:44:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:44,922 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 18:44:44,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:44,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695478094] [2024-06-27 18:44:44,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695478094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:44,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:44,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43031764] [2024-06-27 18:44:44,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:44,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:44,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:45,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:45,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 231 transitions, 2782 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:45,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:45,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:45,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:45,564 INFO L124 PetriNetUnfolderBase]: 1238/2332 cut-off events. [2024-06-27 18:44:45,564 INFO L125 PetriNetUnfolderBase]: For 42996/42996 co-relation queries the response was YES. [2024-06-27 18:44:45,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14306 conditions, 2332 events. 1238/2332 cut-off events. For 42996/42996 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15072 event pairs, 175 based on Foata normal form. 1/2253 useless extension candidates. Maximal degree in co-relation 14219. Up to 1670 conditions per place. [2024-06-27 18:44:45,584 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 202 selfloop transitions, 58 changer transitions 0/268 dead transitions. [2024-06-27 18:44:45,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 268 transitions, 3696 flow [2024-06-27 18:44:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:44:45,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 18:44:45,585 INFO L175 Difference]: Start difference. First operand has 178 places, 231 transitions, 2782 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:44:45,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 268 transitions, 3696 flow [2024-06-27 18:44:45,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 268 transitions, 3573 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:45,669 INFO L231 Difference]: Finished difference. Result has 182 places, 235 transitions, 2908 flow [2024-06-27 18:44:45,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2908, PETRI_PLACES=182, PETRI_TRANSITIONS=235} [2024-06-27 18:44:45,670 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-27 18:44:45,670 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 235 transitions, 2908 flow [2024-06-27 18:44:45,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:45,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:45,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:45,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:44:45,670 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 18:44:45,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash 161894477, now seen corresponding path program 5 times [2024-06-27 18:44:45,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:45,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906705459] [2024-06-27 18:44:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:45,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:46,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906705459] [2024-06-27 18:44:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906705459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:46,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:46,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:46,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568904169] [2024-06-27 18:44:46,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:46,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:46,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:46,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:46,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:46,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 235 transitions, 2908 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:46,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:46,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:46,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:47,058 INFO L124 PetriNetUnfolderBase]: 1288/2409 cut-off events. [2024-06-27 18:44:47,058 INFO L125 PetriNetUnfolderBase]: For 48691/48691 co-relation queries the response was YES. [2024-06-27 18:44:47,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15165 conditions, 2409 events. 1288/2409 cut-off events. For 48691/48691 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15573 event pairs, 174 based on Foata normal form. 1/2330 useless extension candidates. Maximal degree in co-relation 15076. Up to 1712 conditions per place. [2024-06-27 18:44:47,078 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 205 selfloop transitions, 64 changer transitions 0/277 dead transitions. [2024-06-27 18:44:47,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 277 transitions, 3949 flow [2024-06-27 18:44:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:44:47,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 18:44:47,080 INFO L175 Difference]: Start difference. First operand has 182 places, 235 transitions, 2908 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:44:47,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 277 transitions, 3949 flow [2024-06-27 18:44:47,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 277 transitions, 3818 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:47,169 INFO L231 Difference]: Finished difference. Result has 189 places, 243 transitions, 3090 flow [2024-06-27 18:44:47,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3090, PETRI_PLACES=189, PETRI_TRANSITIONS=243} [2024-06-27 18:44:47,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-27 18:44:47,169 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 243 transitions, 3090 flow [2024-06-27 18:44:47,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:47,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:47,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:47,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:44:47,170 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 18:44:47,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash 446994347, now seen corresponding path program 6 times [2024-06-27 18:44:47,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:47,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634925859] [2024-06-27 18:44:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:47,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:48,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:48,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634925859] [2024-06-27 18:44:48,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634925859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:48,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:48,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:48,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883872649] [2024-06-27 18:44:48,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:48,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:48,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:48,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:48,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:48,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:48,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 243 transitions, 3090 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:48,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:48,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:48,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:48,695 INFO L124 PetriNetUnfolderBase]: 1302/2399 cut-off events. [2024-06-27 18:44:48,695 INFO L125 PetriNetUnfolderBase]: For 52717/52717 co-relation queries the response was YES. [2024-06-27 18:44:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15823 conditions, 2399 events. 1302/2399 cut-off events. For 52717/52717 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15053 event pairs, 147 based on Foata normal form. 1/2335 useless extension candidates. Maximal degree in co-relation 15730. Up to 1336 conditions per place. [2024-06-27 18:44:48,717 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 178 selfloop transitions, 99 changer transitions 0/285 dead transitions. [2024-06-27 18:44:48,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 285 transitions, 4100 flow [2024-06-27 18:44:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:44:48,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:44:48,718 INFO L175 Difference]: Start difference. First operand has 189 places, 243 transitions, 3090 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:44:48,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 285 transitions, 4100 flow [2024-06-27 18:44:48,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 285 transitions, 3974 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:48,810 INFO L231 Difference]: Finished difference. Result has 196 places, 252 transitions, 3369 flow [2024-06-27 18:44:48,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3369, PETRI_PLACES=196, PETRI_TRANSITIONS=252} [2024-06-27 18:44:48,812 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-27 18:44:48,812 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 252 transitions, 3369 flow [2024-06-27 18:44:48,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:48,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:48,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:48,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:44:48,813 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 18:44:48,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash 161902847, now seen corresponding path program 7 times [2024-06-27 18:44:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:48,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669448965] [2024-06-27 18:44:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:49,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669448965] [2024-06-27 18:44:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669448965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:49,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:49,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:49,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103086367] [2024-06-27 18:44:49,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:49,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:49,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:49,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:49,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:49,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:49,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 252 transitions, 3369 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:49,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:49,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:49,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:50,306 INFO L124 PetriNetUnfolderBase]: 1300/2430 cut-off events. [2024-06-27 18:44:50,306 INFO L125 PetriNetUnfolderBase]: For 55374/55374 co-relation queries the response was YES. [2024-06-27 18:44:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16711 conditions, 2430 events. 1300/2430 cut-off events. For 55374/55374 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15770 event pairs, 170 based on Foata normal form. 1/2350 useless extension candidates. Maximal degree in co-relation 16613. Up to 1732 conditions per place. [2024-06-27 18:44:50,333 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 212 selfloop transitions, 65 changer transitions 0/285 dead transitions. [2024-06-27 18:44:50,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 285 transitions, 4219 flow [2024-06-27 18:44:50,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:44:50,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:44:50,334 INFO L175 Difference]: Start difference. First operand has 196 places, 252 transitions, 3369 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:44:50,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 285 transitions, 4219 flow [2024-06-27 18:44:50,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 285 transitions, 4073 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:50,445 INFO L231 Difference]: Finished difference. Result has 203 places, 252 transitions, 3358 flow [2024-06-27 18:44:50,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3223, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3358, PETRI_PLACES=203, PETRI_TRANSITIONS=252} [2024-06-27 18:44:50,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-27 18:44:50,446 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 252 transitions, 3358 flow [2024-06-27 18:44:50,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:50,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:50,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:50,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:44:50,446 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 18:44:50,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash -365970143, now seen corresponding path program 6 times [2024-06-27 18:44:50,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:50,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550179112] [2024-06-27 18:44:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:51,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:51,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550179112] [2024-06-27 18:44:51,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550179112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:51,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:51,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:51,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920100825] [2024-06-27 18:44:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:51,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:51,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:51,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:51,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 252 transitions, 3358 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:51,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:51,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:51,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:52,222 INFO L124 PetriNetUnfolderBase]: 1298/2446 cut-off events. [2024-06-27 18:44:52,222 INFO L125 PetriNetUnfolderBase]: For 53925/53925 co-relation queries the response was YES. [2024-06-27 18:44:52,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16651 conditions, 2446 events. 1298/2446 cut-off events. For 53925/53925 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16006 event pairs, 176 based on Foata normal form. 1/2360 useless extension candidates. Maximal degree in co-relation 16551. Up to 1797 conditions per place. [2024-06-27 18:44:52,245 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 222 selfloop transitions, 54 changer transitions 0/284 dead transitions. [2024-06-27 18:44:52,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 284 transitions, 4124 flow [2024-06-27 18:44:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:44:52,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:44:52,247 INFO L175 Difference]: Start difference. First operand has 203 places, 252 transitions, 3358 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:44:52,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 284 transitions, 4124 flow [2024-06-27 18:44:52,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 284 transitions, 3950 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:52,380 INFO L231 Difference]: Finished difference. Result has 204 places, 252 transitions, 3297 flow [2024-06-27 18:44:52,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3297, PETRI_PLACES=204, PETRI_TRANSITIONS=252} [2024-06-27 18:44:52,381 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 18:44:52,381 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 252 transitions, 3297 flow [2024-06-27 18:44:52,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:52,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:52,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:52,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:44:52,385 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 18:44:52,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash 447291017, now seen corresponding path program 8 times [2024-06-27 18:44:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:52,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325836308] [2024-06-27 18:44:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:52,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:53,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:53,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325836308] [2024-06-27 18:44:53,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325836308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:53,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:53,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:53,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192549808] [2024-06-27 18:44:53,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:53,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:53,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:53,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:53,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 252 transitions, 3297 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:53,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:53,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:53,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:54,100 INFO L124 PetriNetUnfolderBase]: 1309/2529 cut-off events. [2024-06-27 18:44:54,101 INFO L125 PetriNetUnfolderBase]: For 55013/55013 co-relation queries the response was YES. [2024-06-27 18:44:54,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16686 conditions, 2529 events. 1309/2529 cut-off events. For 55013/55013 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16876 event pairs, 293 based on Foata normal form. 1/2434 useless extension candidates. Maximal degree in co-relation 16585. Up to 2025 conditions per place. [2024-06-27 18:44:54,122 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 261 selfloop transitions, 16 changer transitions 0/285 dead transitions. [2024-06-27 18:44:54,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 285 transitions, 4026 flow [2024-06-27 18:44:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:44:54,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:44:54,124 INFO L175 Difference]: Start difference. First operand has 204 places, 252 transitions, 3297 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:44:54,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 285 transitions, 4026 flow [2024-06-27 18:44:54,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 285 transitions, 3865 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:54,298 INFO L231 Difference]: Finished difference. Result has 205 places, 255 transitions, 3219 flow [2024-06-27 18:44:54,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3219, PETRI_PLACES=205, PETRI_TRANSITIONS=255} [2024-06-27 18:44:54,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 18:44:54,299 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 255 transitions, 3219 flow [2024-06-27 18:44:54,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:54,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:54,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:54,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:44:54,299 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 18:44:54,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash 161663837, now seen corresponding path program 9 times [2024-06-27 18:44:54,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:54,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51215768] [2024-06-27 18:44:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:54,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:55,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:55,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51215768] [2024-06-27 18:44:55,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51215768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:55,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:55,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:55,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783153372] [2024-06-27 18:44:55,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:55,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:55,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:55,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:55,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:55,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:55,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 255 transitions, 3219 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:55,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:55,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:55,733 INFO L124 PetriNetUnfolderBase]: 1305/2456 cut-off events. [2024-06-27 18:44:55,733 INFO L125 PetriNetUnfolderBase]: For 53553/53553 co-relation queries the response was YES. [2024-06-27 18:44:55,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16129 conditions, 2456 events. 1305/2456 cut-off events. For 53553/53553 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16075 event pairs, 177 based on Foata normal form. 2/2371 useless extension candidates. Maximal degree in co-relation 16027. Up to 1797 conditions per place. [2024-06-27 18:44:55,753 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 222 selfloop transitions, 58 changer transitions 0/288 dead transitions. [2024-06-27 18:44:55,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 288 transitions, 4006 flow [2024-06-27 18:44:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:44:55,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:44:55,754 INFO L175 Difference]: Start difference. First operand has 205 places, 255 transitions, 3219 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:44:55,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 288 transitions, 4006 flow [2024-06-27 18:44:55,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 288 transitions, 3733 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:55,879 INFO L231 Difference]: Finished difference. Result has 206 places, 256 transitions, 3087 flow [2024-06-27 18:44:55,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3087, PETRI_PLACES=206, PETRI_TRANSITIONS=256} [2024-06-27 18:44:55,879 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 18:44:55,879 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 256 transitions, 3087 flow [2024-06-27 18:44:55,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:55,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:55,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:44:55,880 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 18:44:55,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash -357695933, now seen corresponding path program 7 times [2024-06-27 18:44:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:55,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531619117] [2024-06-27 18:44:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:57,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:57,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531619117] [2024-06-27 18:44:57,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531619117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:57,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:57,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:57,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97124759] [2024-06-27 18:44:57,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:57,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:57,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:57,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:57,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 256 transitions, 3087 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:57,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:57,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:57,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:57,796 INFO L124 PetriNetUnfolderBase]: 1306/2435 cut-off events. [2024-06-27 18:44:57,796 INFO L125 PetriNetUnfolderBase]: For 50214/50214 co-relation queries the response was YES. [2024-06-27 18:44:57,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15355 conditions, 2435 events. 1306/2435 cut-off events. For 50214/50214 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15715 event pairs, 158 based on Foata normal form. 1/2361 useless extension candidates. Maximal degree in co-relation 15255. Up to 1530 conditions per place. [2024-06-27 18:44:57,818 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 202 selfloop transitions, 79 changer transitions 0/289 dead transitions. [2024-06-27 18:44:57,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 289 transitions, 3887 flow [2024-06-27 18:44:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:57,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:44:57,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:44:57,819 INFO L175 Difference]: Start difference. First operand has 206 places, 256 transitions, 3087 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:44:57,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 289 transitions, 3887 flow [2024-06-27 18:44:57,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 289 transitions, 3775 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:57,918 INFO L231 Difference]: Finished difference. Result has 207 places, 258 transitions, 3206 flow [2024-06-27 18:44:57,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3206, PETRI_PLACES=207, PETRI_TRANSITIONS=258} [2024-06-27 18:44:57,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-27 18:44:57,919 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 258 transitions, 3206 flow [2024-06-27 18:44:57,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:57,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:57,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:57,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:44:57,919 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 18:44:57,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash 447002717, now seen corresponding path program 10 times [2024-06-27 18:44:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553721232] [2024-06-27 18:44:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:58,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553721232] [2024-06-27 18:44:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553721232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:58,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:58,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:58,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805968411] [2024-06-27 18:44:58,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:58,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:58,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:58,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:44:58,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 258 transitions, 3206 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:58,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:58,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:44:58,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:59,369 INFO L124 PetriNetUnfolderBase]: 1304/2515 cut-off events. [2024-06-27 18:44:59,369 INFO L125 PetriNetUnfolderBase]: For 51491/51491 co-relation queries the response was YES. [2024-06-27 18:44:59,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15644 conditions, 2515 events. 1304/2515 cut-off events. For 51491/51491 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16589 event pairs, 168 based on Foata normal form. 1/2414 useless extension candidates. Maximal degree in co-relation 15543. Up to 1339 conditions per place. [2024-06-27 18:44:59,395 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 180 selfloop transitions, 102 changer transitions 0/290 dead transitions. [2024-06-27 18:44:59,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 290 transitions, 4036 flow [2024-06-27 18:44:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:44:59,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:44:59,397 INFO L175 Difference]: Start difference. First operand has 207 places, 258 transitions, 3206 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:44:59,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 290 transitions, 4036 flow [2024-06-27 18:44:59,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 290 transitions, 3801 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:59,528 INFO L231 Difference]: Finished difference. Result has 209 places, 258 transitions, 3180 flow [2024-06-27 18:44:59,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2971, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3180, PETRI_PLACES=209, PETRI_TRANSITIONS=258} [2024-06-27 18:44:59,529 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-27 18:44:59,529 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 258 transitions, 3180 flow [2024-06-27 18:44:59,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:59,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:59,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:59,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:44:59,529 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 18:44:59,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1005954061, now seen corresponding path program 11 times [2024-06-27 18:44:59,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:59,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558757473] [2024-06-27 18:44:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:59,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:00,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:00,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558757473] [2024-06-27 18:45:00,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558757473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:00,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:00,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:00,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205464182] [2024-06-27 18:45:00,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:00,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:00,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:00,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:00,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:00,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:00,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 258 transitions, 3180 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:00,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:00,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:00,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:00,887 INFO L124 PetriNetUnfolderBase]: 1441/2712 cut-off events. [2024-06-27 18:45:00,887 INFO L125 PetriNetUnfolderBase]: For 53709/53709 co-relation queries the response was YES. [2024-06-27 18:45:00,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17249 conditions, 2712 events. 1441/2712 cut-off events. For 53709/53709 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18173 event pairs, 241 based on Foata normal form. 1/2628 useless extension candidates. Maximal degree in co-relation 17147. Up to 1865 conditions per place. [2024-06-27 18:45:00,913 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 229 selfloop transitions, 86 changer transitions 0/323 dead transitions. [2024-06-27 18:45:00,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 323 transitions, 4484 flow [2024-06-27 18:45:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:00,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:45:00,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:45:00,916 INFO L175 Difference]: Start difference. First operand has 209 places, 258 transitions, 3180 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:45:00,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 323 transitions, 4484 flow [2024-06-27 18:45:01,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 323 transitions, 4223 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:01,055 INFO L231 Difference]: Finished difference. Result has 214 places, 284 transitions, 3572 flow [2024-06-27 18:45:01,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2965, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3572, PETRI_PLACES=214, PETRI_TRANSITIONS=284} [2024-06-27 18:45:01,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-27 18:45:01,055 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 284 transitions, 3572 flow [2024-06-27 18:45:01,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:01,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:01,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:01,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:45:01,056 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 18:45:01,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash -649800965, now seen corresponding path program 12 times [2024-06-27 18:45:01,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:01,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308368139] [2024-06-27 18:45:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:01,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:01,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308368139] [2024-06-27 18:45:01,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308368139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:01,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:01,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:01,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766007450] [2024-06-27 18:45:01,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:01,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:01,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:01,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:01,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:01,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 284 transitions, 3572 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:01,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:01,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:01,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:02,398 INFO L124 PetriNetUnfolderBase]: 1437/2754 cut-off events. [2024-06-27 18:45:02,399 INFO L125 PetriNetUnfolderBase]: For 54499/54499 co-relation queries the response was YES. [2024-06-27 18:45:02,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17315 conditions, 2754 events. 1437/2754 cut-off events. For 54499/54499 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18699 event pairs, 269 based on Foata normal form. 2/2660 useless extension candidates. Maximal degree in co-relation 17210. Up to 2043 conditions per place. [2024-06-27 18:45:02,427 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 251 selfloop transitions, 63 changer transitions 0/322 dead transitions. [2024-06-27 18:45:02,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 322 transitions, 4451 flow [2024-06-27 18:45:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:45:02,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 18:45:02,428 INFO L175 Difference]: Start difference. First operand has 214 places, 284 transitions, 3572 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:45:02,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 322 transitions, 4451 flow [2024-06-27 18:45:02,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 322 transitions, 4296 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:02,590 INFO L231 Difference]: Finished difference. Result has 221 places, 287 transitions, 3625 flow [2024-06-27 18:45:02,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3625, PETRI_PLACES=221, PETRI_TRANSITIONS=287} [2024-06-27 18:45:02,591 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 18:45:02,591 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 287 transitions, 3625 flow [2024-06-27 18:45:02,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:02,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:02,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:02,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:45:02,592 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:02,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2098756271, now seen corresponding path program 1 times [2024-06-27 18:45:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:02,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783059957] [2024-06-27 18:45:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:02,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:02,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:02,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783059957] [2024-06-27 18:45:02,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783059957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:02,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:02,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:45:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242552373] [2024-06-27 18:45:02,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:45:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:45:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:45:02,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 18:45:02,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 287 transitions, 3625 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:02,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:02,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 18:45:02,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:02,964 INFO L124 PetriNetUnfolderBase]: 723/1453 cut-off events. [2024-06-27 18:45:02,965 INFO L125 PetriNetUnfolderBase]: For 38482/38519 co-relation queries the response was YES. [2024-06-27 18:45:02,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9959 conditions, 1453 events. 723/1453 cut-off events. For 38482/38519 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 8782 event pairs, 157 based on Foata normal form. 110/1491 useless extension candidates. Maximal degree in co-relation 9867. Up to 546 conditions per place. [2024-06-27 18:45:02,978 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 140 selfloop transitions, 60 changer transitions 0/268 dead transitions. [2024-06-27 18:45:02,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 268 transitions, 3830 flow [2024-06-27 18:45:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:45:02,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:45:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 18:45:02,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-27 18:45:02,979 INFO L175 Difference]: Start difference. First operand has 221 places, 287 transitions, 3625 flow. Second operand 4 states and 103 transitions. [2024-06-27 18:45:02,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 268 transitions, 3830 flow [2024-06-27 18:45:03,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 268 transitions, 3553 flow, removed 7 selfloop flow, removed 17 redundant places. [2024-06-27 18:45:03,076 INFO L231 Difference]: Finished difference. Result has 208 places, 255 transitions, 3221 flow [2024-06-27 18:45:03,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2919, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3221, PETRI_PLACES=208, PETRI_TRANSITIONS=255} [2024-06-27 18:45:03,076 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-27 18:45:03,076 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 255 transitions, 3221 flow [2024-06-27 18:45:03,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:03,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:03,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:03,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:45:03,077 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 18:45:03,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2019294186, now seen corresponding path program 1 times [2024-06-27 18:45:03,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:03,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472190966] [2024-06-27 18:45:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:03,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472190966] [2024-06-27 18:45:03,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472190966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:03,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:03,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:03,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946726347] [2024-06-27 18:45:03,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:03,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:03,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:03,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:03,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:03,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:03,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 255 transitions, 3221 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:03,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:03,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:03,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:04,325 INFO L124 PetriNetUnfolderBase]: 783/1457 cut-off events. [2024-06-27 18:45:04,325 INFO L125 PetriNetUnfolderBase]: For 43447/43447 co-relation queries the response was YES. [2024-06-27 18:45:04,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10344 conditions, 1457 events. 783/1457 cut-off events. For 43447/43447 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7972 event pairs, 64 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 10254. Up to 1146 conditions per place. [2024-06-27 18:45:04,338 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 226 selfloop transitions, 49 changer transitions 0/284 dead transitions. [2024-06-27 18:45:04,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 284 transitions, 3905 flow [2024-06-27 18:45:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:45:04,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:45:04,340 INFO L175 Difference]: Start difference. First operand has 208 places, 255 transitions, 3221 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:45:04,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 284 transitions, 3905 flow [2024-06-27 18:45:04,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 284 transitions, 3901 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:04,448 INFO L231 Difference]: Finished difference. Result has 217 places, 258 transitions, 3368 flow [2024-06-27 18:45:04,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3368, PETRI_PLACES=217, PETRI_TRANSITIONS=258} [2024-06-27 18:45:04,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-27 18:45:04,449 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 258 transitions, 3368 flow [2024-06-27 18:45:04,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:04,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:04,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:04,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:45:04,450 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 18:45:04,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1260333102, now seen corresponding path program 2 times [2024-06-27 18:45:04,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:04,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115310468] [2024-06-27 18:45:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:04,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:05,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115310468] [2024-06-27 18:45:05,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115310468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:05,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:05,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:45:05,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023025624] [2024-06-27 18:45:05,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:05,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:45:05,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:45:05,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:45:05,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:05,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 258 transitions, 3368 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:05,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:05,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:05,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:05,657 INFO L124 PetriNetUnfolderBase]: 796/1478 cut-off events. [2024-06-27 18:45:05,657 INFO L125 PetriNetUnfolderBase]: For 46392/46392 co-relation queries the response was YES. [2024-06-27 18:45:05,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10723 conditions, 1478 events. 796/1478 cut-off events. For 46392/46392 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8066 event pairs, 111 based on Foata normal form. 2/1394 useless extension candidates. Maximal degree in co-relation 10631. Up to 1221 conditions per place. [2024-06-27 18:45:05,672 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 215 selfloop transitions, 53 changer transitions 0/277 dead transitions. [2024-06-27 18:45:05,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 277 transitions, 4005 flow [2024-06-27 18:45:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:45:05,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:45:05,673 INFO L175 Difference]: Start difference. First operand has 217 places, 258 transitions, 3368 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:45:05,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 277 transitions, 4005 flow [2024-06-27 18:45:05,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 277 transitions, 3900 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:05,786 INFO L231 Difference]: Finished difference. Result has 220 places, 260 transitions, 3411 flow [2024-06-27 18:45:05,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3263, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3411, PETRI_PLACES=220, PETRI_TRANSITIONS=260} [2024-06-27 18:45:05,787 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-27 18:45:05,787 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 260 transitions, 3411 flow [2024-06-27 18:45:05,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:05,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:05,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:05,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:45:05,788 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 18:45:05,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2002710910, now seen corresponding path program 3 times [2024-06-27 18:45:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:05,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423051256] [2024-06-27 18:45:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:06,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423051256] [2024-06-27 18:45:06,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423051256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:06,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:06,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:06,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106803789] [2024-06-27 18:45:06,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:06,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:06,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:06,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:06,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:06,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:06,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 260 transitions, 3411 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:06,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:06,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:06,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:07,070 INFO L124 PetriNetUnfolderBase]: 813/1525 cut-off events. [2024-06-27 18:45:07,071 INFO L125 PetriNetUnfolderBase]: For 47761/47761 co-relation queries the response was YES. [2024-06-27 18:45:07,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10951 conditions, 1525 events. 813/1525 cut-off events. For 47761/47761 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8450 event pairs, 119 based on Foata normal form. 2/1444 useless extension candidates. Maximal degree in co-relation 10858. Up to 1244 conditions per place. [2024-06-27 18:45:07,087 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 238 selfloop transitions, 42 changer transitions 0/289 dead transitions. [2024-06-27 18:45:07,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 289 transitions, 4220 flow [2024-06-27 18:45:07,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:45:07,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:45:07,088 INFO L175 Difference]: Start difference. First operand has 220 places, 260 transitions, 3411 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:45:07,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 289 transitions, 4220 flow [2024-06-27 18:45:07,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 289 transitions, 4094 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:07,211 INFO L231 Difference]: Finished difference. Result has 223 places, 267 transitions, 3548 flow [2024-06-27 18:45:07,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3548, PETRI_PLACES=223, PETRI_TRANSITIONS=267} [2024-06-27 18:45:07,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2024-06-27 18:45:07,212 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 267 transitions, 3548 flow [2024-06-27 18:45:07,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:07,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:07,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:07,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:45:07,213 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 18:45:07,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1263164394, now seen corresponding path program 1 times [2024-06-27 18:45:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:07,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288858087] [2024-06-27 18:45:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:07,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:08,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:08,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288858087] [2024-06-27 18:45:08,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288858087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:08,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:08,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:08,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35986094] [2024-06-27 18:45:08,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:08,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:08,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:08,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:08,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:08,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:08,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 267 transitions, 3548 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:08,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:08,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:08,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:08,799 INFO L124 PetriNetUnfolderBase]: 826/1545 cut-off events. [2024-06-27 18:45:08,799 INFO L125 PetriNetUnfolderBase]: For 51518/51518 co-relation queries the response was YES. [2024-06-27 18:45:08,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11193 conditions, 1545 events. 826/1545 cut-off events. For 51518/51518 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8590 event pairs, 121 based on Foata normal form. 2/1457 useless extension candidates. Maximal degree in co-relation 11098. Up to 1244 conditions per place. [2024-06-27 18:45:08,814 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 213 selfloop transitions, 70 changer transitions 0/292 dead transitions. [2024-06-27 18:45:08,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 292 transitions, 4276 flow [2024-06-27 18:45:08,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:08,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:45:08,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:45:08,815 INFO L175 Difference]: Start difference. First operand has 223 places, 267 transitions, 3548 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:45:08,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 292 transitions, 4276 flow [2024-06-27 18:45:08,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 292 transitions, 4142 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:08,942 INFO L231 Difference]: Finished difference. Result has 227 places, 269 transitions, 3623 flow [2024-06-27 18:45:08,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3623, PETRI_PLACES=227, PETRI_TRANSITIONS=269} [2024-06-27 18:45:08,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-27 18:45:08,943 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 269 transitions, 3623 flow [2024-06-27 18:45:08,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:08,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:08,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:08,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:45:08,944 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 18:45:08,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:08,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2066417216, now seen corresponding path program 2 times [2024-06-27 18:45:08,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:08,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650481407] [2024-06-27 18:45:08,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650481407] [2024-06-27 18:45:09,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650481407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:09,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:09,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:09,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171031397] [2024-06-27 18:45:09,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:09,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:09,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:09,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:09,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:09,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:09,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 269 transitions, 3623 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:09,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:09,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:09,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:10,463 INFO L124 PetriNetUnfolderBase]: 866/1611 cut-off events. [2024-06-27 18:45:10,463 INFO L125 PetriNetUnfolderBase]: For 59733/59733 co-relation queries the response was YES. [2024-06-27 18:45:10,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11957 conditions, 1611 events. 866/1611 cut-off events. For 59733/59733 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8954 event pairs, 115 based on Foata normal form. 1/1517 useless extension candidates. Maximal degree in co-relation 11861. Up to 1245 conditions per place. [2024-06-27 18:45:10,486 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 228 selfloop transitions, 62 changer transitions 0/299 dead transitions. [2024-06-27 18:45:10,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 299 transitions, 4733 flow [2024-06-27 18:45:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:45:10,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:45:10,488 INFO L175 Difference]: Start difference. First operand has 227 places, 269 transitions, 3623 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:45:10,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 299 transitions, 4733 flow [2024-06-27 18:45:10,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 299 transitions, 4552 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:10,633 INFO L231 Difference]: Finished difference. Result has 230 places, 277 transitions, 3836 flow [2024-06-27 18:45:10,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3836, PETRI_PLACES=230, PETRI_TRANSITIONS=277} [2024-06-27 18:45:10,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-27 18:45:10,633 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 277 transitions, 3836 flow [2024-06-27 18:45:10,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:10,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:10,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:10,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:45:10,634 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 18:45:10,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:10,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2066409497, now seen corresponding path program 1 times [2024-06-27 18:45:10,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232566556] [2024-06-27 18:45:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:10,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:11,393 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 18:45:11,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:11,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232566556] [2024-06-27 18:45:11,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232566556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:11,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:11,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:11,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629678939] [2024-06-27 18:45:11,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:11,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:11,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:11,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:11,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:11,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:11,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 277 transitions, 3836 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:11,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:11,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:11,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:11,942 INFO L124 PetriNetUnfolderBase]: 871/1620 cut-off events. [2024-06-27 18:45:11,943 INFO L125 PetriNetUnfolderBase]: For 60173/60173 co-relation queries the response was YES. [2024-06-27 18:45:11,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12040 conditions, 1620 events. 871/1620 cut-off events. For 60173/60173 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9019 event pairs, 116 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 11942. Up to 1292 conditions per place. [2024-06-27 18:45:11,958 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 232 selfloop transitions, 56 changer transitions 0/297 dead transitions. [2024-06-27 18:45:11,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 297 transitions, 4560 flow [2024-06-27 18:45:11,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:45:11,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:45:11,959 INFO L175 Difference]: Start difference. First operand has 230 places, 277 transitions, 3836 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:45:11,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 297 transitions, 4560 flow [2024-06-27 18:45:12,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 297 transitions, 4417 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:12,101 INFO L231 Difference]: Finished difference. Result has 234 places, 279 transitions, 3891 flow [2024-06-27 18:45:12,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3891, PETRI_PLACES=234, PETRI_TRANSITIONS=279} [2024-06-27 18:45:12,102 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-27 18:45:12,102 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 279 transitions, 3891 flow [2024-06-27 18:45:12,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:12,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:12,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:12,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:45:12,102 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 18:45:12,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2066409776, now seen corresponding path program 3 times [2024-06-27 18:45:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:12,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123570294] [2024-06-27 18:45:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:12,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:12,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123570294] [2024-06-27 18:45:12,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123570294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:12,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:12,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:12,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182365233] [2024-06-27 18:45:12,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:12,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:12,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:13,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:13,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 279 transitions, 3891 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:13,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:13,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:13,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:13,545 INFO L124 PetriNetUnfolderBase]: 867/1614 cut-off events. [2024-06-27 18:45:13,545 INFO L125 PetriNetUnfolderBase]: For 56623/56623 co-relation queries the response was YES. [2024-06-27 18:45:13,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11858 conditions, 1614 events. 867/1614 cut-off events. For 56623/56623 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8982 event pairs, 116 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 11758. Up to 1249 conditions per place. [2024-06-27 18:45:13,562 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 230 selfloop transitions, 61 changer transitions 0/300 dead transitions. [2024-06-27 18:45:13,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 300 transitions, 4671 flow [2024-06-27 18:45:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:13,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:45:13,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:45:13,563 INFO L175 Difference]: Start difference. First operand has 234 places, 279 transitions, 3891 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:45:13,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 300 transitions, 4671 flow [2024-06-27 18:45:13,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 300 transitions, 4467 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:13,698 INFO L231 Difference]: Finished difference. Result has 237 places, 279 transitions, 3818 flow [2024-06-27 18:45:13,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3687, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3818, PETRI_PLACES=237, PETRI_TRANSITIONS=279} [2024-06-27 18:45:13,698 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-27 18:45:13,699 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 279 transitions, 3818 flow [2024-06-27 18:45:13,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:13,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:13,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:13,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:45:13,699 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 18:45:13,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1873280214, now seen corresponding path program 4 times [2024-06-27 18:45:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:13,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14789659] [2024-06-27 18:45:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:14,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:14,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14789659] [2024-06-27 18:45:14,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14789659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:14,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:14,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:14,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38975650] [2024-06-27 18:45:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:14,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:14,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:14,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:14,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 279 transitions, 3818 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:14,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:14,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:14,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:15,055 INFO L124 PetriNetUnfolderBase]: 884/1654 cut-off events. [2024-06-27 18:45:15,055 INFO L125 PetriNetUnfolderBase]: For 57633/57633 co-relation queries the response was YES. [2024-06-27 18:45:15,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11952 conditions, 1654 events. 884/1654 cut-off events. For 57633/57633 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9291 event pairs, 117 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 11851. Up to 1327 conditions per place. [2024-06-27 18:45:15,073 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 242 selfloop transitions, 53 changer transitions 0/304 dead transitions. [2024-06-27 18:45:15,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 304 transitions, 4615 flow [2024-06-27 18:45:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:45:15,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:45:15,074 INFO L175 Difference]: Start difference. First operand has 237 places, 279 transitions, 3818 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:45:15,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 304 transitions, 4615 flow [2024-06-27 18:45:15,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 304 transitions, 4499 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:15,218 INFO L231 Difference]: Finished difference. Result has 239 places, 284 transitions, 3944 flow [2024-06-27 18:45:15,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3702, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3944, PETRI_PLACES=239, PETRI_TRANSITIONS=284} [2024-06-27 18:45:15,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 18:45:15,218 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 284 transitions, 3944 flow [2024-06-27 18:45:15,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:15,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:15,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:15,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:45:15,219 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 18:45:15,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:15,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1873064733, now seen corresponding path program 2 times [2024-06-27 18:45:15,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:15,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282322880] [2024-06-27 18:45:15,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:15,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:15,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:15,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282322880] [2024-06-27 18:45:15,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282322880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:15,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:15,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610004586] [2024-06-27 18:45:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:15,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:15,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:15,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:16,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:16,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 284 transitions, 3944 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:16,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:16,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:16,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:16,496 INFO L124 PetriNetUnfolderBase]: 897/1670 cut-off events. [2024-06-27 18:45:16,496 INFO L125 PetriNetUnfolderBase]: For 61127/61127 co-relation queries the response was YES. [2024-06-27 18:45:16,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12260 conditions, 1670 events. 897/1670 cut-off events. For 61127/61127 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9366 event pairs, 117 based on Foata normal form. 2/1568 useless extension candidates. Maximal degree in co-relation 12157. Up to 1311 conditions per place. [2024-06-27 18:45:16,514 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 225 selfloop transitions, 69 changer transitions 0/303 dead transitions. [2024-06-27 18:45:16,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 303 transitions, 4714 flow [2024-06-27 18:45:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:45:16,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:45:16,515 INFO L175 Difference]: Start difference. First operand has 239 places, 284 transitions, 3944 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:45:16,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 303 transitions, 4714 flow [2024-06-27 18:45:16,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 303 transitions, 4562 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:16,661 INFO L231 Difference]: Finished difference. Result has 243 places, 287 transitions, 4060 flow [2024-06-27 18:45:16,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4060, PETRI_PLACES=243, PETRI_TRANSITIONS=287} [2024-06-27 18:45:16,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 18:45:16,661 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 287 transitions, 4060 flow [2024-06-27 18:45:16,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:16,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:16,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:16,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:45:16,662 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 18:45:16,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:16,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1580045708, now seen corresponding path program 4 times [2024-06-27 18:45:16,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:16,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980037391] [2024-06-27 18:45:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:16,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:17,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:17,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980037391] [2024-06-27 18:45:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980037391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:17,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:17,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034440283] [2024-06-27 18:45:17,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:17,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:18,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:18,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 287 transitions, 4060 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:18,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:18,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:18,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:18,987 INFO L124 PetriNetUnfolderBase]: 967/1803 cut-off events. [2024-06-27 18:45:18,987 INFO L125 PetriNetUnfolderBase]: For 66448/66448 co-relation queries the response was YES. [2024-06-27 18:45:18,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13228 conditions, 1803 events. 967/1803 cut-off events. For 66448/66448 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10356 event pairs, 119 based on Foata normal form. 1/1686 useless extension candidates. Maximal degree in co-relation 13124. Up to 1366 conditions per place. [2024-06-27 18:45:19,005 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 236 selfloop transitions, 102 changer transitions 0/347 dead transitions. [2024-06-27 18:45:19,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 347 transitions, 5670 flow [2024-06-27 18:45:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:45:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:45:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2024-06-27 18:45:19,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247104247104247 [2024-06-27 18:45:19,006 INFO L175 Difference]: Start difference. First operand has 243 places, 287 transitions, 4060 flow. Second operand 14 states and 220 transitions. [2024-06-27 18:45:19,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 347 transitions, 5670 flow [2024-06-27 18:45:19,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 347 transitions, 5427 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:19,159 INFO L231 Difference]: Finished difference. Result has 256 places, 321 transitions, 4740 flow [2024-06-27 18:45:19,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3846, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4740, PETRI_PLACES=256, PETRI_TRANSITIONS=321} [2024-06-27 18:45:19,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-27 18:45:19,160 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 321 transitions, 4740 flow [2024-06-27 18:45:19,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:19,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:19,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:19,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:45:19,160 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 18:45:19,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:19,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1580053427, now seen corresponding path program 3 times [2024-06-27 18:45:19,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:19,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532946093] [2024-06-27 18:45:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:20,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:20,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532946093] [2024-06-27 18:45:20,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532946093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:20,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:20,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:20,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378194904] [2024-06-27 18:45:20,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:20,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:20,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:20,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 321 transitions, 4740 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:20,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:20,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:20,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:20,656 INFO L124 PetriNetUnfolderBase]: 973/1812 cut-off events. [2024-06-27 18:45:20,656 INFO L125 PetriNetUnfolderBase]: For 68403/68403 co-relation queries the response was YES. [2024-06-27 18:45:20,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13650 conditions, 1812 events. 973/1812 cut-off events. For 68403/68403 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10397 event pairs, 118 based on Foata normal form. 1/1694 useless extension candidates. Maximal degree in co-relation 13539. Up to 1317 conditions per place. [2024-06-27 18:45:20,676 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 210 selfloop transitions, 122 changer transitions 0/341 dead transitions. [2024-06-27 18:45:20,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 341 transitions, 5564 flow [2024-06-27 18:45:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:45:20,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:45:20,677 INFO L175 Difference]: Start difference. First operand has 256 places, 321 transitions, 4740 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:45:20,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 341 transitions, 5564 flow [2024-06-27 18:45:20,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 341 transitions, 5422 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:20,879 INFO L231 Difference]: Finished difference. Result has 262 places, 323 transitions, 4917 flow [2024-06-27 18:45:20,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4598, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4917, PETRI_PLACES=262, PETRI_TRANSITIONS=323} [2024-06-27 18:45:20,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-27 18:45:20,880 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 323 transitions, 4917 flow [2024-06-27 18:45:20,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:20,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:20,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:20,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:45:20,881 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 18:45:20,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1580053148, now seen corresponding path program 5 times [2024-06-27 18:45:20,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:20,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604425293] [2024-06-27 18:45:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:20,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:21,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:21,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604425293] [2024-06-27 18:45:21,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604425293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:21,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:21,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:21,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386017593] [2024-06-27 18:45:21,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:21,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:21,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:21,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:21,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:21,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:21,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 323 transitions, 4917 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:21,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:21,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:21,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:22,619 INFO L124 PetriNetUnfolderBase]: 1055/1949 cut-off events. [2024-06-27 18:45:22,619 INFO L125 PetriNetUnfolderBase]: For 96280/96280 co-relation queries the response was YES. [2024-06-27 18:45:22,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16070 conditions, 1949 events. 1055/1949 cut-off events. For 96280/96280 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11288 event pairs, 121 based on Foata normal form. 3/1817 useless extension candidates. Maximal degree in co-relation 15957. Up to 1195 conditions per place. [2024-06-27 18:45:22,643 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 230 selfloop transitions, 124 changer transitions 0/363 dead transitions. [2024-06-27 18:45:22,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 363 transitions, 6597 flow [2024-06-27 18:45:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:45:22,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:45:22,645 INFO L175 Difference]: Start difference. First operand has 262 places, 323 transitions, 4917 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:45:22,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 363 transitions, 6597 flow [2024-06-27 18:45:22,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 363 transitions, 6302 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:22,876 INFO L231 Difference]: Finished difference. Result has 264 places, 336 transitions, 5309 flow [2024-06-27 18:45:22,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4622, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5309, PETRI_PLACES=264, PETRI_TRANSITIONS=336} [2024-06-27 18:45:22,876 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-27 18:45:22,876 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 336 transitions, 5309 flow [2024-06-27 18:45:22,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:22,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:22,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:22,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:45:22,877 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 18:45:22,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:22,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1492435886, now seen corresponding path program 6 times [2024-06-27 18:45:22,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:22,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321205937] [2024-06-27 18:45:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:23,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:23,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321205937] [2024-06-27 18:45:23,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321205937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:23,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:23,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:23,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747202340] [2024-06-27 18:45:23,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:23,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:23,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:23,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:23,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 336 transitions, 5309 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:23,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:23,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:23,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:24,634 INFO L124 PetriNetUnfolderBase]: 1059/1962 cut-off events. [2024-06-27 18:45:24,634 INFO L125 PetriNetUnfolderBase]: For 98221/98221 co-relation queries the response was YES. [2024-06-27 18:45:24,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16225 conditions, 1962 events. 1059/1962 cut-off events. For 98221/98221 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11418 event pairs, 119 based on Foata normal form. 3/1828 useless extension candidates. Maximal degree in co-relation 16111. Up to 1203 conditions per place. [2024-06-27 18:45:24,652 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 222 selfloop transitions, 131 changer transitions 0/362 dead transitions. [2024-06-27 18:45:24,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 362 transitions, 6520 flow [2024-06-27 18:45:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:45:24,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:45:24,653 INFO L175 Difference]: Start difference. First operand has 264 places, 336 transitions, 5309 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:45:24,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 362 transitions, 6520 flow [2024-06-27 18:45:24,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 362 transitions, 6246 flow, removed 102 selfloop flow, removed 4 redundant places. [2024-06-27 18:45:24,892 INFO L231 Difference]: Finished difference. Result has 271 places, 341 transitions, 5477 flow [2024-06-27 18:45:24,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5477, PETRI_PLACES=271, PETRI_TRANSITIONS=341} [2024-06-27 18:45:24,893 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 18:45:24,893 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 341 transitions, 5477 flow [2024-06-27 18:45:24,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:24,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:24,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:24,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:45:24,894 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 18:45:24,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1572903308, now seen corresponding path program 7 times [2024-06-27 18:45:24,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:24,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934089439] [2024-06-27 18:45:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:24,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:26,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934089439] [2024-06-27 18:45:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934089439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:26,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051186420] [2024-06-27 18:45:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:26,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:26,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:26,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 341 transitions, 5477 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:26,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:26,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:26,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:26,844 INFO L124 PetriNetUnfolderBase]: 1072/1981 cut-off events. [2024-06-27 18:45:26,844 INFO L125 PetriNetUnfolderBase]: For 95777/95777 co-relation queries the response was YES. [2024-06-27 18:45:26,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16581 conditions, 1981 events. 1072/1981 cut-off events. For 95777/95777 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11549 event pairs, 120 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 16464. Up to 1611 conditions per place. [2024-06-27 18:45:26,867 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 277 selfloop transitions, 82 changer transitions 0/368 dead transitions. [2024-06-27 18:45:26,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 368 transitions, 6577 flow [2024-06-27 18:45:26,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:45:26,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:45:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 206 transitions. [2024-06-27 18:45:26,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282744282744283 [2024-06-27 18:45:26,868 INFO L175 Difference]: Start difference. First operand has 271 places, 341 transitions, 5477 flow. Second operand 13 states and 206 transitions. [2024-06-27 18:45:26,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 368 transitions, 6577 flow [2024-06-27 18:45:27,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 368 transitions, 6253 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:27,135 INFO L231 Difference]: Finished difference. Result has 281 places, 348 transitions, 5552 flow [2024-06-27 18:45:27,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5161, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5552, PETRI_PLACES=281, PETRI_TRANSITIONS=348} [2024-06-27 18:45:27,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 18:45:27,135 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 348 transitions, 5552 flow [2024-06-27 18:45:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:27,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:27,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:27,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:45:27,136 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 18:45:27,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1499852636, now seen corresponding path program 8 times [2024-06-27 18:45:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:27,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932921623] [2024-06-27 18:45:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:27,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932921623] [2024-06-27 18:45:28,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932921623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:28,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:28,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889126352] [2024-06-27 18:45:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:28,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:28,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:28,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:28,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 348 transitions, 5552 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:28,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:28,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:28,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:29,285 INFO L124 PetriNetUnfolderBase]: 1076/1990 cut-off events. [2024-06-27 18:45:29,285 INFO L125 PetriNetUnfolderBase]: For 94268/94268 co-relation queries the response was YES. [2024-06-27 18:45:29,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16268 conditions, 1990 events. 1076/1990 cut-off events. For 94268/94268 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11628 event pairs, 119 based on Foata normal form. 2/1852 useless extension candidates. Maximal degree in co-relation 16146. Up to 1552 conditions per place. [2024-06-27 18:45:29,305 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 262 selfloop transitions, 100 changer transitions 0/371 dead transitions. [2024-06-27 18:45:29,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 371 transitions, 6634 flow [2024-06-27 18:45:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:45:29,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:45:29,306 INFO L175 Difference]: Start difference. First operand has 281 places, 348 transitions, 5552 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:45:29,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 371 transitions, 6634 flow [2024-06-27 18:45:29,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 371 transitions, 6394 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:29,570 INFO L231 Difference]: Finished difference. Result has 285 places, 352 transitions, 5661 flow [2024-06-27 18:45:29,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5312, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5661, PETRI_PLACES=285, PETRI_TRANSITIONS=352} [2024-06-27 18:45:29,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 18:45:29,571 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 352 transitions, 5661 flow [2024-06-27 18:45:29,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:29,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:29,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:29,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:45:29,572 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 18:45:29,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1580322538, now seen corresponding path program 1 times [2024-06-27 18:45:29,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:29,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684338394] [2024-06-27 18:45:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:29,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:30,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:30,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684338394] [2024-06-27 18:45:30,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684338394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:30,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:30,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:30,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449955094] [2024-06-27 18:45:30,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:30,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:30,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:30,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:30,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:30,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:30,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 352 transitions, 5661 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:30,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:30,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:30,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:31,105 INFO L124 PetriNetUnfolderBase]: 1093/2030 cut-off events. [2024-06-27 18:45:31,105 INFO L125 PetriNetUnfolderBase]: For 95148/95148 co-relation queries the response was YES. [2024-06-27 18:45:31,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16395 conditions, 2030 events. 1093/2030 cut-off events. For 95148/95148 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11966 event pairs, 152 based on Foata normal form. 2/1893 useless extension candidates. Maximal degree in co-relation 16272. Up to 1699 conditions per place. [2024-06-27 18:45:31,129 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 335 selfloop transitions, 30 changer transitions 0/374 dead transitions. [2024-06-27 18:45:31,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 374 transitions, 6519 flow [2024-06-27 18:45:31,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:45:31,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:45:31,130 INFO L175 Difference]: Start difference. First operand has 285 places, 352 transitions, 5661 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:45:31,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 374 transitions, 6519 flow [2024-06-27 18:45:31,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 374 transitions, 6341 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:31,572 INFO L231 Difference]: Finished difference. Result has 288 places, 353 transitions, 5569 flow [2024-06-27 18:45:31,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5483, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5569, PETRI_PLACES=288, PETRI_TRANSITIONS=353} [2024-06-27 18:45:31,573 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 18:45:31,573 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 353 transitions, 5569 flow [2024-06-27 18:45:31,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:31,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:31,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:31,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:45:31,574 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 18:45:31,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1580322197, now seen corresponding path program 4 times [2024-06-27 18:45:31,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:31,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833689959] [2024-06-27 18:45:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:31,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:32,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:32,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833689959] [2024-06-27 18:45:32,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833689959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:32,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:32,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:32,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178378692] [2024-06-27 18:45:32,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:32,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:32,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:32,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:32,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:32,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:32,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 353 transitions, 5569 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:32,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:32,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:32,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:33,459 INFO L124 PetriNetUnfolderBase]: 1090/2023 cut-off events. [2024-06-27 18:45:33,459 INFO L125 PetriNetUnfolderBase]: For 90947/90947 co-relation queries the response was YES. [2024-06-27 18:45:33,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16241 conditions, 2023 events. 1090/2023 cut-off events. For 90947/90947 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11887 event pairs, 132 based on Foata normal form. 1/1882 useless extension candidates. Maximal degree in co-relation 16116. Up to 1436 conditions per place. [2024-06-27 18:45:33,484 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 243 selfloop transitions, 118 changer transitions 0/370 dead transitions. [2024-06-27 18:45:33,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 370 transitions, 6396 flow [2024-06-27 18:45:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:45:33,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:45:33,485 INFO L175 Difference]: Start difference. First operand has 288 places, 353 transitions, 5569 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:45:33,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 370 transitions, 6396 flow [2024-06-27 18:45:33,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 370 transitions, 6331 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:33,775 INFO L231 Difference]: Finished difference. Result has 291 places, 354 transitions, 5774 flow [2024-06-27 18:45:33,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5504, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5774, PETRI_PLACES=291, PETRI_TRANSITIONS=354} [2024-06-27 18:45:33,776 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 18:45:33,776 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 354 transitions, 5774 flow [2024-06-27 18:45:33,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:33,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:33,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:33,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:45:33,777 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 18:45:33,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:33,777 INFO L85 PathProgramCache]: Analyzing trace with hash 716397866, now seen corresponding path program 5 times [2024-06-27 18:45:33,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:33,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16506050] [2024-06-27 18:45:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:33,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:34,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16506050] [2024-06-27 18:45:34,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16506050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:34,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:34,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:34,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427738241] [2024-06-27 18:45:34,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:34,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:34,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:34,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 354 transitions, 5774 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:34,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:34,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:34,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:35,151 INFO L124 PetriNetUnfolderBase]: 1107/2063 cut-off events. [2024-06-27 18:45:35,151 INFO L125 PetriNetUnfolderBase]: For 96567/96567 co-relation queries the response was YES. [2024-06-27 18:45:35,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16710 conditions, 2063 events. 1107/2063 cut-off events. For 96567/96567 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12229 event pairs, 141 based on Foata normal form. 2/1919 useless extension candidates. Maximal degree in co-relation 16584. Up to 1654 conditions per place. [2024-06-27 18:45:35,172 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 301 selfloop transitions, 65 changer transitions 0/375 dead transitions. [2024-06-27 18:45:35,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 375 transitions, 6689 flow [2024-06-27 18:45:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:45:35,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:45:35,173 INFO L175 Difference]: Start difference. First operand has 291 places, 354 transitions, 5774 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:45:35,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 375 transitions, 6689 flow [2024-06-27 18:45:35,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 375 transitions, 6428 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:35,489 INFO L231 Difference]: Finished difference. Result has 294 places, 357 transitions, 5743 flow [2024-06-27 18:45:35,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5513, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5743, PETRI_PLACES=294, PETRI_TRANSITIONS=357} [2024-06-27 18:45:35,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-27 18:45:35,489 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 357 transitions, 5743 flow [2024-06-27 18:45:35,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:35,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:35,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:35,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:45:35,490 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 18:45:35,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:35,490 INFO L85 PathProgramCache]: Analyzing trace with hash 764716720, now seen corresponding path program 2 times [2024-06-27 18:45:35,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:35,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115054353] [2024-06-27 18:45:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:36,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:36,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115054353] [2024-06-27 18:45:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115054353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761581867] [2024-06-27 18:45:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:36,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:36,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 357 transitions, 5743 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:36,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:36,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:37,633 INFO L124 PetriNetUnfolderBase]: 1144/2161 cut-off events. [2024-06-27 18:45:37,634 INFO L125 PetriNetUnfolderBase]: For 104689/104689 co-relation queries the response was YES. [2024-06-27 18:45:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17222 conditions, 2161 events. 1144/2161 cut-off events. For 104689/104689 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 12984 event pairs, 201 based on Foata normal form. 2/2016 useless extension candidates. Maximal degree in co-relation 17094. Up to 1761 conditions per place. [2024-06-27 18:45:37,659 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 358 selfloop transitions, 19 changer transitions 0/386 dead transitions. [2024-06-27 18:45:37,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 386 transitions, 6811 flow [2024-06-27 18:45:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:45:37,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 18:45:37,660 INFO L175 Difference]: Start difference. First operand has 294 places, 357 transitions, 5743 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:45:37,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 386 transitions, 6811 flow [2024-06-27 18:45:38,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 386 transitions, 6611 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:38,134 INFO L231 Difference]: Finished difference. Result has 299 places, 359 transitions, 5631 flow [2024-06-27 18:45:38,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5543, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5631, PETRI_PLACES=299, PETRI_TRANSITIONS=359} [2024-06-27 18:45:38,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 18:45:38,135 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 359 transitions, 5631 flow [2024-06-27 18:45:38,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:38,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:38,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:38,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:45:38,135 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 18:45:38,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1296934455, now seen corresponding path program 5 times [2024-06-27 18:45:38,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:38,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908293006] [2024-06-27 18:45:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:39,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:39,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908293006] [2024-06-27 18:45:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908293006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:39,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:39,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584961740] [2024-06-27 18:45:39,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:39,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:39,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:39,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:39,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:39,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:39,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 359 transitions, 5631 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:39,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:39,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:39,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:40,172 INFO L124 PetriNetUnfolderBase]: 1164/2177 cut-off events. [2024-06-27 18:45:40,172 INFO L125 PetriNetUnfolderBase]: For 106235/106235 co-relation queries the response was YES. [2024-06-27 18:45:40,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17377 conditions, 2177 events. 1164/2177 cut-off events. For 106235/106235 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13077 event pairs, 214 based on Foata normal form. 1/2026 useless extension candidates. Maximal degree in co-relation 17248. Up to 1846 conditions per place. [2024-06-27 18:45:40,199 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 352 selfloop transitions, 23 changer transitions 0/384 dead transitions. [2024-06-27 18:45:40,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 384 transitions, 6789 flow [2024-06-27 18:45:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 18:45:40,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 18:45:40,200 INFO L175 Difference]: Start difference. First operand has 299 places, 359 transitions, 5631 flow. Second operand 11 states and 173 transitions. [2024-06-27 18:45:40,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 384 transitions, 6789 flow [2024-06-27 18:45:40,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 384 transitions, 6745 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:40,566 INFO L231 Difference]: Finished difference. Result has 305 places, 365 transitions, 5815 flow [2024-06-27 18:45:40,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5589, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5815, PETRI_PLACES=305, PETRI_TRANSITIONS=365} [2024-06-27 18:45:40,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 18:45:40,567 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 365 transitions, 5815 flow [2024-06-27 18:45:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:40,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:40,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:40,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:45:40,568 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 18:45:40,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1796329630, now seen corresponding path program 9 times [2024-06-27 18:45:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:40,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757698469] [2024-06-27 18:45:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:40,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:41,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:41,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757698469] [2024-06-27 18:45:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757698469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:41,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:41,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:41,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69424449] [2024-06-27 18:45:41,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:41,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:41,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:41,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:41,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:41,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:41,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 365 transitions, 5815 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:41,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:41,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:41,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:42,419 INFO L124 PetriNetUnfolderBase]: 1204/2239 cut-off events. [2024-06-27 18:45:42,419 INFO L125 PetriNetUnfolderBase]: For 123775/123775 co-relation queries the response was YES. [2024-06-27 18:45:42,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18614 conditions, 2239 events. 1204/2239 cut-off events. For 123775/123775 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13469 event pairs, 148 based on Foata normal form. 1/2076 useless extension candidates. Maximal degree in co-relation 18482. Up to 1169 conditions per place. [2024-06-27 18:45:42,445 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 230 selfloop transitions, 155 changer transitions 0/394 dead transitions. [2024-06-27 18:45:42,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 394 transitions, 7473 flow [2024-06-27 18:45:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:45:42,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:45:42,446 INFO L175 Difference]: Start difference. First operand has 305 places, 365 transitions, 5815 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:45:42,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 394 transitions, 7473 flow [2024-06-27 18:45:43,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 394 transitions, 7261 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:43,005 INFO L231 Difference]: Finished difference. Result has 310 places, 373 transitions, 6263 flow [2024-06-27 18:45:43,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5603, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6263, PETRI_PLACES=310, PETRI_TRANSITIONS=373} [2024-06-27 18:45:43,006 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-27 18:45:43,006 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 373 transitions, 6263 flow [2024-06-27 18:45:43,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:43,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:43,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:43,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:45:43,006 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 18:45:43,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:43,007 INFO L85 PathProgramCache]: Analyzing trace with hash 716605628, now seen corresponding path program 10 times [2024-06-27 18:45:43,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599961297] [2024-06-27 18:45:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:44,104 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 18:45:44,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:44,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599961297] [2024-06-27 18:45:44,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599961297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:44,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:44,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:44,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652612067] [2024-06-27 18:45:44,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:44,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:44,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:44,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:44,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:44,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:44,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 373 transitions, 6263 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:44,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:44,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:44,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:44,971 INFO L124 PetriNetUnfolderBase]: 1244/2307 cut-off events. [2024-06-27 18:45:44,971 INFO L125 PetriNetUnfolderBase]: For 145517/145517 co-relation queries the response was YES. [2024-06-27 18:45:44,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20299 conditions, 2307 events. 1244/2307 cut-off events. For 145517/145517 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 13923 event pairs, 149 based on Foata normal form. 1/2137 useless extension candidates. Maximal degree in co-relation 20164. Up to 1828 conditions per place. [2024-06-27 18:45:44,998 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 313 selfloop transitions, 77 changer transitions 0/399 dead transitions. [2024-06-27 18:45:44,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 399 transitions, 7745 flow [2024-06-27 18:45:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:45:44,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:45:44,999 INFO L175 Difference]: Start difference. First operand has 310 places, 373 transitions, 6263 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:45:44,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 399 transitions, 7745 flow [2024-06-27 18:45:45,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 399 transitions, 7254 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:45,451 INFO L231 Difference]: Finished difference. Result has 314 places, 381 transitions, 6278 flow [2024-06-27 18:45:45,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5790, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6278, PETRI_PLACES=314, PETRI_TRANSITIONS=381} [2024-06-27 18:45:45,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-27 18:45:45,452 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 381 transitions, 6278 flow [2024-06-27 18:45:45,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:45,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:45,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:45,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:45:45,452 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 18:45:45,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:45,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1296934796, now seen corresponding path program 3 times [2024-06-27 18:45:45,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:45,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318329003] [2024-06-27 18:45:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:45,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:46,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:46,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318329003] [2024-06-27 18:45:46,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318329003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:46,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:46,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:46,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972723193] [2024-06-27 18:45:46,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:46,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:46,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:46,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:46,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 381 transitions, 6278 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:46,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:46,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:46,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:47,637 INFO L124 PetriNetUnfolderBase]: 1241/2305 cut-off events. [2024-06-27 18:45:47,637 INFO L125 PetriNetUnfolderBase]: For 137087/137087 co-relation queries the response was YES. [2024-06-27 18:45:47,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19525 conditions, 2305 events. 1241/2305 cut-off events. For 137087/137087 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13995 event pairs, 215 based on Foata normal form. 2/2142 useless extension candidates. Maximal degree in co-relation 19389. Up to 1953 conditions per place. [2024-06-27 18:45:47,665 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 374 selfloop transitions, 20 changer transitions 0/403 dead transitions. [2024-06-27 18:45:47,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 403 transitions, 7184 flow [2024-06-27 18:45:47,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:47,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:45:47,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 18:45:47,666 INFO L175 Difference]: Start difference. First operand has 314 places, 381 transitions, 6278 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:45:47,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 403 transitions, 7184 flow [2024-06-27 18:45:48,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 403 transitions, 6950 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:48,059 INFO L231 Difference]: Finished difference. Result has 320 places, 381 transitions, 6089 flow [2024-06-27 18:45:48,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6044, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6089, PETRI_PLACES=320, PETRI_TRANSITIONS=381} [2024-06-27 18:45:48,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-27 18:45:48,060 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 381 transitions, 6089 flow [2024-06-27 18:45:48,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:48,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:48,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:48,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:45:48,061 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 18:45:48,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash 724022378, now seen corresponding path program 11 times [2024-06-27 18:45:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:48,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210731205] [2024-06-27 18:45:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:48,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:49,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:49,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210731205] [2024-06-27 18:45:49,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210731205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:49,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:49,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:49,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819113645] [2024-06-27 18:45:49,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:49,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:49,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:49,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:49,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:49,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:49,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 381 transitions, 6089 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:49,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:49,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:49,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:50,075 INFO L124 PetriNetUnfolderBase]: 1272/2351 cut-off events. [2024-06-27 18:45:50,075 INFO L125 PetriNetUnfolderBase]: For 144941/144941 co-relation queries the response was YES. [2024-06-27 18:45:50,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20109 conditions, 2351 events. 1272/2351 cut-off events. For 144941/144941 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 14241 event pairs, 149 based on Foata normal form. 2/2176 useless extension candidates. Maximal degree in co-relation 19971. Up to 1782 conditions per place. [2024-06-27 18:45:50,104 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 307 selfloop transitions, 91 changer transitions 0/407 dead transitions. [2024-06-27 18:45:50,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 407 transitions, 7591 flow [2024-06-27 18:45:50,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:50,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:45:50,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:45:50,105 INFO L175 Difference]: Start difference. First operand has 320 places, 381 transitions, 6089 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:45:50,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 407 transitions, 7591 flow [2024-06-27 18:45:50,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 407 transitions, 7540 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:45:50,509 INFO L231 Difference]: Finished difference. Result has 321 places, 387 transitions, 6484 flow [2024-06-27 18:45:50,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6484, PETRI_PLACES=321, PETRI_TRANSITIONS=387} [2024-06-27 18:45:50,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 18:45:50,509 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 387 transitions, 6484 flow [2024-06-27 18:45:50,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:50,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:50,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:50,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:45:50,510 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 18:45:50,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:50,510 INFO L85 PathProgramCache]: Analyzing trace with hash 716613347, now seen corresponding path program 6 times [2024-06-27 18:45:50,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017599742] [2024-06-27 18:45:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:50,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:51,267 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 18:45:51,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:51,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017599742] [2024-06-27 18:45:51,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017599742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:51,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:51,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:45:51,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693287638] [2024-06-27 18:45:51,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:51,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:45:51,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:45:51,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:45:51,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:51,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 387 transitions, 6484 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:51,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:51,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:51,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:51,958 INFO L124 PetriNetUnfolderBase]: 1277/2361 cut-off events. [2024-06-27 18:45:51,958 INFO L125 PetriNetUnfolderBase]: For 149468/149468 co-relation queries the response was YES. [2024-06-27 18:45:51,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20499 conditions, 2361 events. 1277/2361 cut-off events. For 149468/149468 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 14303 event pairs, 148 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 20359. Up to 1908 conditions per place. [2024-06-27 18:45:51,988 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 323 selfloop transitions, 71 changer transitions 0/403 dead transitions. [2024-06-27 18:45:51,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 403 transitions, 7422 flow [2024-06-27 18:45:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:51,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:45:51,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:45:51,989 INFO L175 Difference]: Start difference. First operand has 321 places, 387 transitions, 6484 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:45:51,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 403 transitions, 7422 flow [2024-06-27 18:45:52,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 403 transitions, 6924 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:52,489 INFO L231 Difference]: Finished difference. Result has 321 places, 389 transitions, 6212 flow [2024-06-27 18:45:52,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5992, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6212, PETRI_PLACES=321, PETRI_TRANSITIONS=389} [2024-06-27 18:45:52,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 18:45:52,489 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 389 transitions, 6212 flow [2024-06-27 18:45:52,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:52,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:52,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:52,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:45:52,490 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 18:45:52,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:52,490 INFO L85 PathProgramCache]: Analyzing trace with hash 716613068, now seen corresponding path program 12 times [2024-06-27 18:45:52,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:52,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364578335] [2024-06-27 18:45:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:52,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:53,352 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 18:45:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364578335] [2024-06-27 18:45:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364578335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:53,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86743249] [2024-06-27 18:45:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:53,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:53,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:53,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:53,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:53,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 389 transitions, 6212 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:53,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:53,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:53,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:54,199 INFO L124 PetriNetUnfolderBase]: 1273/2352 cut-off events. [2024-06-27 18:45:54,199 INFO L125 PetriNetUnfolderBase]: For 138225/138225 co-relation queries the response was YES. [2024-06-27 18:45:54,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19417 conditions, 2352 events. 1273/2352 cut-off events. For 138225/138225 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 14229 event pairs, 148 based on Foata normal form. 2/2175 useless extension candidates. Maximal degree in co-relation 19277. Up to 1873 conditions per place. [2024-06-27 18:45:54,228 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 319 selfloop transitions, 78 changer transitions 0/406 dead transitions. [2024-06-27 18:45:54,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 406 transitions, 7246 flow [2024-06-27 18:45:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:54,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:45:54,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:45:54,229 INFO L175 Difference]: Start difference. First operand has 321 places, 389 transitions, 6212 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:45:54,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 406 transitions, 7246 flow [2024-06-27 18:45:54,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 406 transitions, 6984 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:54,685 INFO L231 Difference]: Finished difference. Result has 324 places, 389 transitions, 6113 flow [2024-06-27 18:45:54,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5950, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6113, PETRI_PLACES=324, PETRI_TRANSITIONS=389} [2024-06-27 18:45:54,686 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-27 18:45:54,686 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 389 transitions, 6113 flow [2024-06-27 18:45:54,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:54,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:54,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:54,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:45:54,686 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 18:45:54,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 753288539, now seen corresponding path program 7 times [2024-06-27 18:45:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:54,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340099260] [2024-06-27 18:45:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340099260] [2024-06-27 18:45:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340099260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:55,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:55,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104850963] [2024-06-27 18:45:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:55,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:55,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:55,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:55,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 389 transitions, 6113 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:55,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:55,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:55,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:56,582 INFO L124 PetriNetUnfolderBase]: 1279/2365 cut-off events. [2024-06-27 18:45:56,583 INFO L125 PetriNetUnfolderBase]: For 137248/137248 co-relation queries the response was YES. [2024-06-27 18:45:56,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19296 conditions, 2365 events. 1279/2365 cut-off events. For 137248/137248 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14361 event pairs, 214 based on Foata normal form. 1/2191 useless extension candidates. Maximal degree in co-relation 19155. Up to 2028 conditions per place. [2024-06-27 18:45:56,612 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 379 selfloop transitions, 20 changer transitions 0/408 dead transitions. [2024-06-27 18:45:56,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 408 transitions, 7206 flow [2024-06-27 18:45:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:45:56,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 18:45:56,613 INFO L175 Difference]: Start difference. First operand has 324 places, 389 transitions, 6113 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:45:56,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 408 transitions, 7206 flow [2024-06-27 18:45:57,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 408 transitions, 7058 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:57,096 INFO L231 Difference]: Finished difference. Result has 326 places, 391 transitions, 6063 flow [2024-06-27 18:45:57,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6063, PETRI_PLACES=326, PETRI_TRANSITIONS=391} [2024-06-27 18:45:57,096 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-27 18:45:57,096 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 391 transitions, 6063 flow [2024-06-27 18:45:57,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:57,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:57,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:57,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:45:57,097 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 18:45:57,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:57,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1285883265, now seen corresponding path program 8 times [2024-06-27 18:45:57,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:57,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299265804] [2024-06-27 18:45:57,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:57,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:58,266 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 18:45:58,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:58,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299265804] [2024-06-27 18:45:58,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299265804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:58,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:58,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019793459] [2024-06-27 18:45:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:58,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:58,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:58,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:58,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:58,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:45:58,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 391 transitions, 6063 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:58,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:58,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:45:58,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:59,174 INFO L124 PetriNetUnfolderBase]: 1277/2362 cut-off events. [2024-06-27 18:45:59,174 INFO L125 PetriNetUnfolderBase]: For 136039/136039 co-relation queries the response was YES. [2024-06-27 18:45:59,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19087 conditions, 2362 events. 1277/2362 cut-off events. For 136039/136039 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14335 event pairs, 214 based on Foata normal form. 1/2188 useless extension candidates. Maximal degree in co-relation 18945. Up to 2011 conditions per place. [2024-06-27 18:45:59,203 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 373 selfloop transitions, 25 changer transitions 0/407 dead transitions. [2024-06-27 18:45:59,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 407 transitions, 6949 flow [2024-06-27 18:45:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:45:59,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 18:45:59,205 INFO L175 Difference]: Start difference. First operand has 326 places, 391 transitions, 6063 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:45:59,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 407 transitions, 6949 flow [2024-06-27 18:45:59,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 407 transitions, 6831 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:59,662 INFO L231 Difference]: Finished difference. Result has 327 places, 391 transitions, 6000 flow [2024-06-27 18:45:59,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5945, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6000, PETRI_PLACES=327, PETRI_TRANSITIONS=391} [2024-06-27 18:45:59,663 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-27 18:45:59,663 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 391 transitions, 6000 flow [2024-06-27 18:45:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:59,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:59,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:59,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:45:59,663 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 18:45:59,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1285882986, now seen corresponding path program 13 times [2024-06-27 18:45:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38879843] [2024-06-27 18:45:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:00,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:00,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38879843] [2024-06-27 18:46:00,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38879843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:00,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:00,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:00,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262418967] [2024-06-27 18:46:00,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:00,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:00,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:00,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:00,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 391 transitions, 6000 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:00,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:00,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:00,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:01,397 INFO L124 PetriNetUnfolderBase]: 1283/2374 cut-off events. [2024-06-27 18:46:01,397 INFO L125 PetriNetUnfolderBase]: For 138583/138583 co-relation queries the response was YES. [2024-06-27 18:46:01,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19139 conditions, 2374 events. 1283/2374 cut-off events. For 138583/138583 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 14444 event pairs, 213 based on Foata normal form. 1/2199 useless extension candidates. Maximal degree in co-relation 18997. Up to 2045 conditions per place. [2024-06-27 18:46:01,425 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 383 selfloop transitions, 17 changer transitions 0/409 dead transitions. [2024-06-27 18:46:01,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 409 transitions, 6945 flow [2024-06-27 18:46:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:01,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:46:01,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:46:01,426 INFO L175 Difference]: Start difference. First operand has 327 places, 391 transitions, 6000 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:46:01,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 409 transitions, 6945 flow [2024-06-27 18:46:01,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 409 transitions, 6898 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:01,874 INFO L231 Difference]: Finished difference. Result has 329 places, 393 transitions, 6051 flow [2024-06-27 18:46:01,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5953, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6051, PETRI_PLACES=329, PETRI_TRANSITIONS=393} [2024-06-27 18:46:01,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-27 18:46:01,875 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 393 transitions, 6051 flow [2024-06-27 18:46:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:01,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:01,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:01,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:46:01,875 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 18:46:01,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash 723755468, now seen corresponding path program 14 times [2024-06-27 18:46:01,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:01,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750880350] [2024-06-27 18:46:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750880350] [2024-06-27 18:46:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750880350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:03,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:03,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491244024] [2024-06-27 18:46:03,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:03,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:03,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:03,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:03,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 393 transitions, 6051 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:03,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:03,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:03,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:04,352 INFO L124 PetriNetUnfolderBase]: 1308/2418 cut-off events. [2024-06-27 18:46:04,352 INFO L125 PetriNetUnfolderBase]: For 141905/141905 co-relation queries the response was YES. [2024-06-27 18:46:04,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19548 conditions, 2418 events. 1308/2418 cut-off events. For 141905/141905 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 14763 event pairs, 148 based on Foata normal form. 1/2232 useless extension candidates. Maximal degree in co-relation 19405. Up to 1893 conditions per place. [2024-06-27 18:46:04,382 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 319 selfloop transitions, 110 changer transitions 0/438 dead transitions. [2024-06-27 18:46:04,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 438 transitions, 7551 flow [2024-06-27 18:46:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:46:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:46:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2024-06-27 18:46:04,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247104247104247 [2024-06-27 18:46:04,383 INFO L175 Difference]: Start difference. First operand has 329 places, 393 transitions, 6051 flow. Second operand 14 states and 220 transitions. [2024-06-27 18:46:04,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 438 transitions, 7551 flow [2024-06-27 18:46:04,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 438 transitions, 7478 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:04,845 INFO L231 Difference]: Finished difference. Result has 340 places, 420 transitions, 6657 flow [2024-06-27 18:46:04,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5978, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6657, PETRI_PLACES=340, PETRI_TRANSITIONS=420} [2024-06-27 18:46:04,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 18:46:04,846 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 420 transitions, 6657 flow [2024-06-27 18:46:04,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:04,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:04,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:04,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:46:04,846 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 18:46:04,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:04,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1796606119, now seen corresponding path program 9 times [2024-06-27 18:46:04,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:04,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206160615] [2024-06-27 18:46:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:04,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:05,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:05,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206160615] [2024-06-27 18:46:05,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206160615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:05,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:05,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:05,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124502886] [2024-06-27 18:46:05,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:05,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:06,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:06,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:06,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:06,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:06,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 420 transitions, 6657 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:06,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:06,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:06,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:06,984 INFO L124 PetriNetUnfolderBase]: 1314/2432 cut-off events. [2024-06-27 18:46:06,985 INFO L125 PetriNetUnfolderBase]: For 146786/146786 co-relation queries the response was YES. [2024-06-27 18:46:07,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20146 conditions, 2432 events. 1314/2432 cut-off events. For 146786/146786 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 14880 event pairs, 148 based on Foata normal form. 1/2243 useless extension candidates. Maximal degree in co-relation 19997. Up to 1587 conditions per place. [2024-06-27 18:46:07,018 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 273 selfloop transitions, 160 changer transitions 0/442 dead transitions. [2024-06-27 18:46:07,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 442 transitions, 8110 flow [2024-06-27 18:46:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:46:07,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:46:07,019 INFO L175 Difference]: Start difference. First operand has 340 places, 420 transitions, 6657 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:46:07,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 442 transitions, 8110 flow [2024-06-27 18:46:07,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 442 transitions, 7941 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-27 18:46:07,598 INFO L231 Difference]: Finished difference. Result has 346 places, 426 transitions, 7106 flow [2024-06-27 18:46:07,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6488, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7106, PETRI_PLACES=346, PETRI_TRANSITIONS=426} [2024-06-27 18:46:07,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-27 18:46:07,599 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 426 transitions, 7106 flow [2024-06-27 18:46:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:07,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:07,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:07,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:46:07,600 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 18:46:07,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:07,600 INFO L85 PathProgramCache]: Analyzing trace with hash 723763187, now seen corresponding path program 10 times [2024-06-27 18:46:07,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:07,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023095134] [2024-06-27 18:46:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:07,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:08,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023095134] [2024-06-27 18:46:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023095134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:08,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:08,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:08,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103259717] [2024-06-27 18:46:08,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:08,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:08,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:08,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:08,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 426 transitions, 7106 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:08,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:08,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:08,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:09,241 INFO L124 PetriNetUnfolderBase]: 1312/2422 cut-off events. [2024-06-27 18:46:09,241 INFO L125 PetriNetUnfolderBase]: For 147486/147486 co-relation queries the response was YES. [2024-06-27 18:46:09,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20548 conditions, 2422 events. 1312/2422 cut-off events. For 147486/147486 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 14761 event pairs, 148 based on Foata normal form. 1/2233 useless extension candidates. Maximal degree in co-relation 20396. Up to 1933 conditions per place. [2024-06-27 18:46:09,276 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 342 selfloop transitions, 90 changer transitions 0/441 dead transitions. [2024-06-27 18:46:09,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 441 transitions, 8062 flow [2024-06-27 18:46:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:46:09,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:46:09,277 INFO L175 Difference]: Start difference. First operand has 346 places, 426 transitions, 7106 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:46:09,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 441 transitions, 8062 flow [2024-06-27 18:46:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 441 transitions, 7895 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 18:46:09,874 INFO L231 Difference]: Finished difference. Result has 351 places, 426 transitions, 7124 flow [2024-06-27 18:46:09,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6939, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7124, PETRI_PLACES=351, PETRI_TRANSITIONS=426} [2024-06-27 18:46:09,874 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-27 18:46:09,874 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 426 transitions, 7124 flow [2024-06-27 18:46:09,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:09,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:09,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:09,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:46:09,875 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 18:46:09,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 723762908, now seen corresponding path program 15 times [2024-06-27 18:46:09,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:09,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314761467] [2024-06-27 18:46:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:09,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:10,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:10,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314761467] [2024-06-27 18:46:10,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314761467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:10,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:10,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:10,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076947856] [2024-06-27 18:46:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:10,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:10,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:10,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:11,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:11,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 426 transitions, 7124 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:11,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:11,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:11,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:11,777 INFO L124 PetriNetUnfolderBase]: 1317/2432 cut-off events. [2024-06-27 18:46:11,777 INFO L125 PetriNetUnfolderBase]: For 146006/146006 co-relation queries the response was YES. [2024-06-27 18:46:11,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20639 conditions, 2432 events. 1317/2432 cut-off events. For 146006/146006 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 14829 event pairs, 147 based on Foata normal form. 2/2242 useless extension candidates. Maximal degree in co-relation 20486. Up to 1834 conditions per place. [2024-06-27 18:46:11,810 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 326 selfloop transitions, 111 changer transitions 0/446 dead transitions. [2024-06-27 18:46:11,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 446 transitions, 8652 flow [2024-06-27 18:46:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:46:11,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 18:46:11,811 INFO L175 Difference]: Start difference. First operand has 351 places, 426 transitions, 7124 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:46:11,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 446 transitions, 8652 flow [2024-06-27 18:46:12,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 446 transitions, 8369 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:12,354 INFO L231 Difference]: Finished difference. Result has 354 places, 428 transitions, 7147 flow [2024-06-27 18:46:12,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6841, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7147, PETRI_PLACES=354, PETRI_TRANSITIONS=428} [2024-06-27 18:46:12,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-27 18:46:12,355 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 428 transitions, 7147 flow [2024-06-27 18:46:12,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:12,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:12,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:12,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:46:12,355 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 18:46:12,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:12,356 INFO L85 PathProgramCache]: Analyzing trace with hash 724022657, now seen corresponding path program 11 times [2024-06-27 18:46:12,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:12,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136356673] [2024-06-27 18:46:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:12,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:13,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:13,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136356673] [2024-06-27 18:46:13,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136356673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:13,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:13,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:13,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116548281] [2024-06-27 18:46:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:13,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:13,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:13,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 428 transitions, 7147 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:13,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:13,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:13,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:14,052 INFO L124 PetriNetUnfolderBase]: 1323/2441 cut-off events. [2024-06-27 18:46:14,052 INFO L125 PetriNetUnfolderBase]: For 146095/146095 co-relation queries the response was YES. [2024-06-27 18:46:14,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20719 conditions, 2441 events. 1323/2441 cut-off events. For 146095/146095 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 14870 event pairs, 147 based on Foata normal form. 1/2249 useless extension candidates. Maximal degree in co-relation 20565. Up to 1949 conditions per place. [2024-06-27 18:46:14,086 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 345 selfloop transitions, 91 changer transitions 0/445 dead transitions. [2024-06-27 18:46:14,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 445 transitions, 8170 flow [2024-06-27 18:46:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:46:14,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:46:14,087 INFO L175 Difference]: Start difference. First operand has 354 places, 428 transitions, 7147 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:46:14,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 445 transitions, 8170 flow [2024-06-27 18:46:14,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 445 transitions, 7855 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:14,668 INFO L231 Difference]: Finished difference. Result has 355 places, 430 transitions, 7082 flow [2024-06-27 18:46:14,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6834, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7082, PETRI_PLACES=355, PETRI_TRANSITIONS=430} [2024-06-27 18:46:14,668 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 18:46:14,669 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 430 transitions, 7082 flow [2024-06-27 18:46:14,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:14,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:14,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:14,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:46:14,669 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 18:46:14,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:14,670 INFO L85 PathProgramCache]: Analyzing trace with hash 191428272, now seen corresponding path program 4 times [2024-06-27 18:46:14,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:14,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635534224] [2024-06-27 18:46:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:14,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:15,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635534224] [2024-06-27 18:46:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635534224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:15,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:15,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991418387] [2024-06-27 18:46:15,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:15,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:15,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 430 transitions, 7082 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:15,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:15,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:15,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:16,147 INFO L124 PetriNetUnfolderBase]: 1340/2482 cut-off events. [2024-06-27 18:46:16,148 INFO L125 PetriNetUnfolderBase]: For 150697/150697 co-relation queries the response was YES. [2024-06-27 18:46:16,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20764 conditions, 2482 events. 1340/2482 cut-off events. For 150697/150697 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 15272 event pairs, 153 based on Foata normal form. 2/2293 useless extension candidates. Maximal degree in co-relation 20609. Up to 2096 conditions per place. [2024-06-27 18:46:16,182 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 411 selfloop transitions, 30 changer transitions 0/450 dead transitions. [2024-06-27 18:46:16,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 450 transitions, 8096 flow [2024-06-27 18:46:16,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:46:16,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:46:16,183 INFO L175 Difference]: Start difference. First operand has 355 places, 430 transitions, 7082 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:46:16,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 450 transitions, 8096 flow [2024-06-27 18:46:16,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 450 transitions, 7879 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:16,801 INFO L231 Difference]: Finished difference. Result has 356 places, 431 transitions, 6955 flow [2024-06-27 18:46:16,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6865, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6955, PETRI_PLACES=356, PETRI_TRANSITIONS=431} [2024-06-27 18:46:16,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-27 18:46:16,802 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 431 transitions, 6955 flow [2024-06-27 18:46:16,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:16,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:16,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:16,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:46:16,802 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 18:46:16,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash 972193676, now seen corresponding path program 5 times [2024-06-27 18:46:16,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:16,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528312649] [2024-06-27 18:46:16,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:16,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:17,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:17,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528312649] [2024-06-27 18:46:17,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528312649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:17,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:17,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692542146] [2024-06-27 18:46:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:17,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:17,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:17,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:17,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:17,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:17,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 431 transitions, 6955 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:17,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:17,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:17,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:18,354 INFO L124 PetriNetUnfolderBase]: 1337/2477 cut-off events. [2024-06-27 18:46:18,354 INFO L125 PetriNetUnfolderBase]: For 145712/145712 co-relation queries the response was YES. [2024-06-27 18:46:18,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20429 conditions, 2477 events. 1337/2477 cut-off events. For 145712/145712 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 15236 event pairs, 152 based on Foata normal form. 2/2288 useless extension candidates. Maximal degree in co-relation 20273. Up to 2014 conditions per place. [2024-06-27 18:46:18,385 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 392 selfloop transitions, 50 changer transitions 0/451 dead transitions. [2024-06-27 18:46:18,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 451 transitions, 7959 flow [2024-06-27 18:46:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:46:18,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:46:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:46:18,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-27 18:46:18,386 INFO L175 Difference]: Start difference. First operand has 356 places, 431 transitions, 6955 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:46:18,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 451 transitions, 7959 flow [2024-06-27 18:46:18,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 451 transitions, 7879 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:18,958 INFO L231 Difference]: Finished difference. Result has 358 places, 431 transitions, 6979 flow [2024-06-27 18:46:18,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6875, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6979, PETRI_PLACES=358, PETRI_TRANSITIONS=431} [2024-06-27 18:46:18,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 317 predicate places. [2024-06-27 18:46:18,958 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 431 transitions, 6979 flow [2024-06-27 18:46:18,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:18,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:18,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:18,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:46:18,959 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 18:46:18,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash 972183756, now seen corresponding path program 16 times [2024-06-27 18:46:18,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:18,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639739787] [2024-06-27 18:46:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:18,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:20,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:20,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639739787] [2024-06-27 18:46:20,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639739787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:20,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:20,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:20,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373198048] [2024-06-27 18:46:20,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:20,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:20,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:20,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:20,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:20,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:20,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 431 transitions, 6979 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:20,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:20,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:20,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:21,056 INFO L124 PetriNetUnfolderBase]: 1377/2543 cut-off events. [2024-06-27 18:46:21,056 INFO L125 PetriNetUnfolderBase]: For 161052/161052 co-relation queries the response was YES. [2024-06-27 18:46:21,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21467 conditions, 2543 events. 1377/2543 cut-off events. For 161052/161052 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15658 event pairs, 150 based on Foata normal form. 2/2340 useless extension candidates. Maximal degree in co-relation 21310. Up to 1338 conditions per place. [2024-06-27 18:46:21,092 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 261 selfloop transitions, 191 changer transitions 0/461 dead transitions. [2024-06-27 18:46:21,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 461 transitions, 8963 flow [2024-06-27 18:46:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:46:21,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:46:21,093 INFO L175 Difference]: Start difference. First operand has 358 places, 431 transitions, 6979 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:46:21,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 461 transitions, 8963 flow [2024-06-27 18:46:21,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 461 transitions, 8793 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:21,760 INFO L231 Difference]: Finished difference. Result has 359 places, 440 transitions, 7468 flow [2024-06-27 18:46:21,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6809, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7468, PETRI_PLACES=359, PETRI_TRANSITIONS=440} [2024-06-27 18:46:21,761 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 18:46:21,761 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 440 transitions, 7468 flow [2024-06-27 18:46:21,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:21,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:21,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:21,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:46:21,761 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:21,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:21,761 INFO L85 PathProgramCache]: Analyzing trace with hash 971924565, now seen corresponding path program 12 times [2024-06-27 18:46:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:21,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11078057] [2024-06-27 18:46:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:21,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:22,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:22,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11078057] [2024-06-27 18:46:22,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11078057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:22,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:22,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:22,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729046264] [2024-06-27 18:46:22,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:22,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:22,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:22,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:22,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:22,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:22,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 440 transitions, 7468 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:22,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:22,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:22,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:23,389 INFO L124 PetriNetUnfolderBase]: 1375/2540 cut-off events. [2024-06-27 18:46:23,390 INFO L125 PetriNetUnfolderBase]: For 158323/158323 co-relation queries the response was YES. [2024-06-27 18:46:23,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21681 conditions, 2540 events. 1375/2540 cut-off events. For 158323/158323 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15646 event pairs, 150 based on Foata normal form. 1/2336 useless extension candidates. Maximal degree in co-relation 21524. Up to 1825 conditions per place. [2024-06-27 18:46:23,423 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 292 selfloop transitions, 155 changer transitions 0/456 dead transitions. [2024-06-27 18:46:23,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 456 transitions, 8466 flow [2024-06-27 18:46:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:46:23,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:46:23,424 INFO L175 Difference]: Start difference. First operand has 359 places, 440 transitions, 7468 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:46:23,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 456 transitions, 8466 flow [2024-06-27 18:46:24,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 456 transitions, 8028 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-27 18:46:24,062 INFO L231 Difference]: Finished difference. Result has 364 places, 440 transitions, 7345 flow [2024-06-27 18:46:24,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7030, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7345, PETRI_PLACES=364, PETRI_TRANSITIONS=440} [2024-06-27 18:46:24,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-27 18:46:24,062 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 440 transitions, 7345 flow [2024-06-27 18:46:24,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:24,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:24,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:24,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:46:24,063 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 18:46:24,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash 971924286, now seen corresponding path program 17 times [2024-06-27 18:46:24,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:24,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228593275] [2024-06-27 18:46:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:24,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:24,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228593275] [2024-06-27 18:46:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228593275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:24,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:24,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193762640] [2024-06-27 18:46:24,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:24,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:24,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:25,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:25,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 440 transitions, 7345 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:25,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:25,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:25,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:25,895 INFO L124 PetriNetUnfolderBase]: 1371/2534 cut-off events. [2024-06-27 18:46:25,896 INFO L125 PetriNetUnfolderBase]: For 154571/154571 co-relation queries the response was YES. [2024-06-27 18:46:25,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20973 conditions, 2534 events. 1371/2534 cut-off events. For 154571/154571 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15602 event pairs, 149 based on Foata normal form. 2/2331 useless extension candidates. Maximal degree in co-relation 20815. Up to 1334 conditions per place. [2024-06-27 18:46:25,935 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 257 selfloop transitions, 194 changer transitions 0/460 dead transitions. [2024-06-27 18:46:25,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 460 transitions, 8901 flow [2024-06-27 18:46:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 18:46:25,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 18:46:25,936 INFO L175 Difference]: Start difference. First operand has 364 places, 440 transitions, 7345 flow. Second operand 10 states and 176 transitions. [2024-06-27 18:46:25,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 460 transitions, 8901 flow [2024-06-27 18:46:26,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 460 transitions, 8584 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:26,699 INFO L231 Difference]: Finished difference. Result has 365 places, 440 transitions, 7423 flow [2024-06-27 18:46:26,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7028, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7423, PETRI_PLACES=365, PETRI_TRANSITIONS=440} [2024-06-27 18:46:26,699 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-27 18:46:26,699 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 440 transitions, 7423 flow [2024-06-27 18:46:26,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:26,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:26,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:26,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:46:26,700 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 18:46:26,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash 724031957, now seen corresponding path program 13 times [2024-06-27 18:46:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:26,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765393457] [2024-06-27 18:46:26,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:26,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:27,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:27,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765393457] [2024-06-27 18:46:27,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765393457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:27,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:27,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421879042] [2024-06-27 18:46:27,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:27,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:27,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:27,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:27,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:27,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 440 transitions, 7423 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:27,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:27,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:27,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:28,668 INFO L124 PetriNetUnfolderBase]: 1368/2528 cut-off events. [2024-06-27 18:46:28,668 INFO L125 PetriNetUnfolderBase]: For 152290/152290 co-relation queries the response was YES. [2024-06-27 18:46:28,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21153 conditions, 2528 events. 1368/2528 cut-off events. For 152290/152290 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15557 event pairs, 149 based on Foata normal form. 1/2324 useless extension candidates. Maximal degree in co-relation 20994. Up to 1992 conditions per place. [2024-06-27 18:46:28,705 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 347 selfloop transitions, 99 changer transitions 0/455 dead transitions. [2024-06-27 18:46:28,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 455 transitions, 8407 flow [2024-06-27 18:46:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:46:28,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:46:28,706 INFO L175 Difference]: Start difference. First operand has 365 places, 440 transitions, 7423 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:46:28,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 455 transitions, 8407 flow [2024-06-27 18:46:29,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 455 transitions, 7977 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:29,365 INFO L231 Difference]: Finished difference. Result has 368 places, 440 transitions, 7196 flow [2024-06-27 18:46:29,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7196, PETRI_PLACES=368, PETRI_TRANSITIONS=440} [2024-06-27 18:46:29,366 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 18:46:29,366 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 440 transitions, 7196 flow [2024-06-27 18:46:29,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:29,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:29,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:29,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:46:29,366 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 18:46:29,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:29,367 INFO L85 PathProgramCache]: Analyzing trace with hash 986749316, now seen corresponding path program 6 times [2024-06-27 18:46:29,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:29,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140767262] [2024-06-27 18:46:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:29,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140767262] [2024-06-27 18:46:30,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140767262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:30,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:30,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378005034] [2024-06-27 18:46:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:30,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:30,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:30,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 440 transitions, 7196 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:30,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:30,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:30,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:30,900 INFO L124 PetriNetUnfolderBase]: 1392/2582 cut-off events. [2024-06-27 18:46:30,900 INFO L125 PetriNetUnfolderBase]: For 156126/156126 co-relation queries the response was YES. [2024-06-27 18:46:30,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20957 conditions, 2582 events. 1392/2582 cut-off events. For 156126/156126 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16047 event pairs, 165 based on Foata normal form. 2/2380 useless extension candidates. Maximal degree in co-relation 20797. Up to 2164 conditions per place. [2024-06-27 18:46:30,938 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 412 selfloop transitions, 46 changer transitions 0/467 dead transitions. [2024-06-27 18:46:30,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 467 transitions, 8270 flow [2024-06-27 18:46:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:46:30,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:46:30,939 INFO L175 Difference]: Start difference. First operand has 368 places, 440 transitions, 7196 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:46:30,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 467 transitions, 8270 flow [2024-06-27 18:46:31,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 467 transitions, 7933 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:31,626 INFO L231 Difference]: Finished difference. Result has 369 places, 442 transitions, 7001 flow [2024-06-27 18:46:31,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6859, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7001, PETRI_PLACES=369, PETRI_TRANSITIONS=442} [2024-06-27 18:46:31,627 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-27 18:46:31,627 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 442 transitions, 7001 flow [2024-06-27 18:46:31,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:31,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:31,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:31,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:46:31,628 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 18:46:31,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:31,628 INFO L85 PathProgramCache]: Analyzing trace with hash -253436942, now seen corresponding path program 7 times [2024-06-27 18:46:31,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:31,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72441865] [2024-06-27 18:46:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:31,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:32,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:32,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72441865] [2024-06-27 18:46:32,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72441865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:32,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:32,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:32,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990273624] [2024-06-27 18:46:32,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:32,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:32,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:32,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:32,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:32,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 442 transitions, 7001 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:32,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:32,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:32,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:33,288 INFO L124 PetriNetUnfolderBase]: 1427/2669 cut-off events. [2024-06-27 18:46:33,288 INFO L125 PetriNetUnfolderBase]: For 160633/160633 co-relation queries the response was YES. [2024-06-27 18:46:33,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21380 conditions, 2669 events. 1427/2669 cut-off events. For 160633/160633 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 16884 event pairs, 170 based on Foata normal form. 2/2461 useless extension candidates. Maximal degree in co-relation 21220. Up to 2196 conditions per place. [2024-06-27 18:46:33,322 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 403 selfloop transitions, 60 changer transitions 0/472 dead transitions. [2024-06-27 18:46:33,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 472 transitions, 8140 flow [2024-06-27 18:46:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:46:33,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:46:33,323 INFO L175 Difference]: Start difference. First operand has 369 places, 442 transitions, 7001 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:46:33,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 472 transitions, 8140 flow [2024-06-27 18:46:33,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 472 transitions, 7978 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:33,985 INFO L231 Difference]: Finished difference. Result has 371 places, 445 transitions, 7053 flow [2024-06-27 18:46:33,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6870, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7053, PETRI_PLACES=371, PETRI_TRANSITIONS=445} [2024-06-27 18:46:33,986 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 18:46:33,986 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 445 transitions, 7053 flow [2024-06-27 18:46:33,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:33,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:33,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:33,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:46:33,987 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 18:46:33,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1021263116, now seen corresponding path program 8 times [2024-06-27 18:46:33,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992020817] [2024-06-27 18:46:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:33,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:34,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:34,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992020817] [2024-06-27 18:46:34,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992020817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:34,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:34,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:46:34,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990798579] [2024-06-27 18:46:34,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:34,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:46:34,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:34,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:46:34,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:46:34,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:34,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 445 transitions, 7053 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:34,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:34,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:34,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:35,765 INFO L124 PetriNetUnfolderBase]: 1457/2751 cut-off events. [2024-06-27 18:46:35,766 INFO L125 PetriNetUnfolderBase]: For 155104/155104 co-relation queries the response was YES. [2024-06-27 18:46:35,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21395 conditions, 2751 events. 1457/2751 cut-off events. For 155104/155104 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 17628 event pairs, 160 based on Foata normal form. 2/2534 useless extension candidates. Maximal degree in co-relation 21235. Up to 2243 conditions per place. [2024-06-27 18:46:35,809 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 406 selfloop transitions, 58 changer transitions 0/473 dead transitions. [2024-06-27 18:46:35,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 473 transitions, 8190 flow [2024-06-27 18:46:35,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:46:35,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:46:35,810 INFO L175 Difference]: Start difference. First operand has 371 places, 445 transitions, 7053 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:46:35,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 473 transitions, 8190 flow [2024-06-27 18:46:36,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 473 transitions, 8014 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:36,486 INFO L231 Difference]: Finished difference. Result has 374 places, 450 transitions, 7129 flow [2024-06-27 18:46:36,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6910, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7129, PETRI_PLACES=374, PETRI_TRANSITIONS=450} [2024-06-27 18:46:36,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-27 18:46:36,487 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 450 transitions, 7129 flow [2024-06-27 18:46:36,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:36,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:36,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:36,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:46:36,487 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 18:46:36,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:36,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1338150382, now seen corresponding path program 18 times [2024-06-27 18:46:36,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:36,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840168777] [2024-06-27 18:46:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:36,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:37,383 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 18:46:37,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:37,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840168777] [2024-06-27 18:46:37,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840168777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:37,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:37,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992449389] [2024-06-27 18:46:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:37,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:37,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:37,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:37,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:37,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 450 transitions, 7129 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:37,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:37,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:37,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:38,429 INFO L124 PetriNetUnfolderBase]: 1579/2947 cut-off events. [2024-06-27 18:46:38,429 INFO L125 PetriNetUnfolderBase]: For 167544/167544 co-relation queries the response was YES. [2024-06-27 18:46:38,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23069 conditions, 2947 events. 1579/2947 cut-off events. For 167544/167544 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 18935 event pairs, 166 based on Foata normal form. 1/2691 useless extension candidates. Maximal degree in co-relation 22907. Up to 2222 conditions per place. [2024-06-27 18:46:38,468 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 403 selfloop transitions, 114 changer transitions 0/526 dead transitions. [2024-06-27 18:46:38,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 526 transitions, 9488 flow [2024-06-27 18:46:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:46:38,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 18:46:38,469 INFO L175 Difference]: Start difference. First operand has 374 places, 450 transitions, 7129 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:46:38,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 526 transitions, 9488 flow [2024-06-27 18:46:39,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 526 transitions, 9366 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:39,251 INFO L231 Difference]: Finished difference. Result has 381 places, 492 transitions, 8139 flow [2024-06-27 18:46:39,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7007, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8139, PETRI_PLACES=381, PETRI_TRANSITIONS=492} [2024-06-27 18:46:39,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-27 18:46:39,252 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 492 transitions, 8139 flow [2024-06-27 18:46:39,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:39,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:39,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:39,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:46:39,252 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 18:46:39,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:39,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1331007982, now seen corresponding path program 19 times [2024-06-27 18:46:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:39,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563414241] [2024-06-27 18:46:39,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:40,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:40,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563414241] [2024-06-27 18:46:40,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563414241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:40,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:40,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:40,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581644954] [2024-06-27 18:46:40,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:40,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:40,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:40,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:40,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:40,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 492 transitions, 8139 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:40,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:40,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:40,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:41,108 INFO L124 PetriNetUnfolderBase]: 1577/2944 cut-off events. [2024-06-27 18:46:41,109 INFO L125 PetriNetUnfolderBase]: For 166512/166512 co-relation queries the response was YES. [2024-06-27 18:46:41,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23351 conditions, 2944 events. 1577/2944 cut-off events. For 166512/166512 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 18918 event pairs, 166 based on Foata normal form. 1/2688 useless extension candidates. Maximal degree in co-relation 23186. Up to 2428 conditions per place. [2024-06-27 18:46:41,150 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 439 selfloop transitions, 69 changer transitions 0/517 dead transitions. [2024-06-27 18:46:41,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 517 transitions, 9318 flow [2024-06-27 18:46:41,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:46:41,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:46:41,151 INFO L175 Difference]: Start difference. First operand has 381 places, 492 transitions, 8139 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:46:41,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 517 transitions, 9318 flow [2024-06-27 18:46:41,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 517 transitions, 9149 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 18:46:41,969 INFO L231 Difference]: Finished difference. Result has 389 places, 495 transitions, 8183 flow [2024-06-27 18:46:41,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7970, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8183, PETRI_PLACES=389, PETRI_TRANSITIONS=495} [2024-06-27 18:46:41,970 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 18:46:41,970 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 495 transitions, 8183 flow [2024-06-27 18:46:41,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:41,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:41,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:41,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:46:41,970 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 18:46:41,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:41,971 INFO L85 PathProgramCache]: Analyzing trace with hash 964786612, now seen corresponding path program 1 times [2024-06-27 18:46:41,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:41,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825803707] [2024-06-27 18:46:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:41,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:42,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:42,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825803707] [2024-06-27 18:46:42,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825803707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:42,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:42,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:42,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109135731] [2024-06-27 18:46:42,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:42,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:42,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:42,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:42,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:43,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:43,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 495 transitions, 8183 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:43,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:43,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:43,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:44,002 INFO L124 PetriNetUnfolderBase]: 1598/2993 cut-off events. [2024-06-27 18:46:44,002 INFO L125 PetriNetUnfolderBase]: For 175381/175381 co-relation queries the response was YES. [2024-06-27 18:46:44,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23741 conditions, 2993 events. 1598/2993 cut-off events. For 175381/175381 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19343 event pairs, 164 based on Foata normal form. 2/2744 useless extension candidates. Maximal degree in co-relation 23572. Up to 2224 conditions per place. [2024-06-27 18:46:44,043 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 440 selfloop transitions, 78 changer transitions 0/527 dead transitions. [2024-06-27 18:46:44,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 527 transitions, 9439 flow [2024-06-27 18:46:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:46:44,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:46:44,044 INFO L175 Difference]: Start difference. First operand has 389 places, 495 transitions, 8183 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:46:44,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 527 transitions, 9439 flow [2024-06-27 18:46:44,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 527 transitions, 9299 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:44,920 INFO L231 Difference]: Finished difference. Result has 392 places, 497 transitions, 8304 flow [2024-06-27 18:46:44,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8043, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8304, PETRI_PLACES=392, PETRI_TRANSITIONS=497} [2024-06-27 18:46:44,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-27 18:46:44,921 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 497 transitions, 8304 flow [2024-06-27 18:46:44,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:44,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:44,921 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 18:46:44,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:46:44,921 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 18:46:44,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1052549782, now seen corresponding path program 2 times [2024-06-27 18:46:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:44,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756847687] [2024-06-27 18:46:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:44,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:46,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:46,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756847687] [2024-06-27 18:46:46,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756847687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:46,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:46,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032157270] [2024-06-27 18:46:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:46,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:46,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:46,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:46,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:46,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:46,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 497 transitions, 8304 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:46,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:46,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:46,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:47,009 INFO L124 PetriNetUnfolderBase]: 1615/3032 cut-off events. [2024-06-27 18:46:47,010 INFO L125 PetriNetUnfolderBase]: For 180055/180055 co-relation queries the response was YES. [2024-06-27 18:46:47,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24281 conditions, 3032 events. 1615/3032 cut-off events. For 180055/180055 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19710 event pairs, 200 based on Foata normal form. 2/2772 useless extension candidates. Maximal degree in co-relation 24110. Up to 2485 conditions per place. [2024-06-27 18:46:47,054 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 446 selfloop transitions, 69 changer transitions 0/524 dead transitions. [2024-06-27 18:46:47,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 524 transitions, 9500 flow [2024-06-27 18:46:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:46:47,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:46:47,055 INFO L175 Difference]: Start difference. First operand has 392 places, 497 transitions, 8304 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:46:47,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 524 transitions, 9500 flow [2024-06-27 18:46:47,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 524 transitions, 9323 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:47,921 INFO L231 Difference]: Finished difference. Result has 395 places, 498 transitions, 8299 flow [2024-06-27 18:46:47,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8127, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8299, PETRI_PLACES=395, PETRI_TRANSITIONS=498} [2024-06-27 18:46:47,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 18:46:47,921 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 498 transitions, 8299 flow [2024-06-27 18:46:47,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:47,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:47,922 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 18:46:47,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:46:47,922 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 18:46:47,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:47,923 INFO L85 PathProgramCache]: Analyzing trace with hash 413719352, now seen corresponding path program 3 times [2024-06-27 18:46:47,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:47,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261944741] [2024-06-27 18:46:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:47,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:48,744 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 18:46:48,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:48,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261944741] [2024-06-27 18:46:48,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261944741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:48,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:48,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:48,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937637914] [2024-06-27 18:46:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:48,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:48,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:48,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:48,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:48,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:48,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 498 transitions, 8299 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:48,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:48,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:48,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:49,856 INFO L124 PetriNetUnfolderBase]: 1632/3064 cut-off events. [2024-06-27 18:46:49,856 INFO L125 PetriNetUnfolderBase]: For 182781/182781 co-relation queries the response was YES. [2024-06-27 18:46:49,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24428 conditions, 3064 events. 1632/3064 cut-off events. For 182781/182781 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19968 event pairs, 143 based on Foata normal form. 2/2819 useless extension candidates. Maximal degree in co-relation 24256. Up to 2471 conditions per place. [2024-06-27 18:46:49,893 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 472 selfloop transitions, 50 changer transitions 0/531 dead transitions. [2024-06-27 18:46:49,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 531 transitions, 9535 flow [2024-06-27 18:46:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:46:49,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:46:49,894 INFO L175 Difference]: Start difference. First operand has 395 places, 498 transitions, 8299 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:46:49,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 531 transitions, 9535 flow [2024-06-27 18:46:50,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 531 transitions, 9373 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:50,623 INFO L231 Difference]: Finished difference. Result has 397 places, 499 transitions, 8273 flow [2024-06-27 18:46:50,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8137, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8273, PETRI_PLACES=397, PETRI_TRANSITIONS=499} [2024-06-27 18:46:50,623 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 356 predicate places. [2024-06-27 18:46:50,624 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 499 transitions, 8273 flow [2024-06-27 18:46:50,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:50,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:50,624 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 18:46:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:46:50,624 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 18:46:50,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash -183593984, now seen corresponding path program 4 times [2024-06-27 18:46:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026097426] [2024-06-27 18:46:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:51,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:51,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026097426] [2024-06-27 18:46:51,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026097426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:51,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:51,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394141412] [2024-06-27 18:46:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:51,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:51,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:51,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 499 transitions, 8273 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:51,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:51,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:53,028 INFO L124 PetriNetUnfolderBase]: 1649/3107 cut-off events. [2024-06-27 18:46:53,028 INFO L125 PetriNetUnfolderBase]: For 188288/188288 co-relation queries the response was YES. [2024-06-27 18:46:53,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24589 conditions, 3107 events. 1649/3107 cut-off events. For 188288/188288 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 20373 event pairs, 201 based on Foata normal form. 2/2848 useless extension candidates. Maximal degree in co-relation 24416. Up to 2539 conditions per place. [2024-06-27 18:46:53,073 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 461 selfloop transitions, 55 changer transitions 0/525 dead transitions. [2024-06-27 18:46:53,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 525 transitions, 9477 flow [2024-06-27 18:46:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:46:53,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:46:53,076 INFO L175 Difference]: Start difference. First operand has 397 places, 499 transitions, 8273 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:46:53,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 525 transitions, 9477 flow [2024-06-27 18:46:53,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 525 transitions, 9351 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:53,812 INFO L231 Difference]: Finished difference. Result has 399 places, 500 transitions, 8297 flow [2024-06-27 18:46:53,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8147, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8297, PETRI_PLACES=399, PETRI_TRANSITIONS=500} [2024-06-27 18:46:53,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-27 18:46:53,813 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 500 transitions, 8297 flow [2024-06-27 18:46:53,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:53,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:53,813 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 18:46:53,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:46:53,814 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 18:46:53,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:53,814 INFO L85 PathProgramCache]: Analyzing trace with hash -189850094, now seen corresponding path program 5 times [2024-06-27 18:46:53,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:53,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310915148] [2024-06-27 18:46:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:53,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:54,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:54,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310915148] [2024-06-27 18:46:54,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310915148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:54,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:54,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681688092] [2024-06-27 18:46:54,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:54,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:54,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:54,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:54,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 500 transitions, 8297 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:54,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:54,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:54,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:55,844 INFO L124 PetriNetUnfolderBase]: 1666/3145 cut-off events. [2024-06-27 18:46:55,844 INFO L125 PetriNetUnfolderBase]: For 191735/191735 co-relation queries the response was YES. [2024-06-27 18:46:55,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24788 conditions, 3145 events. 1666/3145 cut-off events. For 191735/191735 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 20692 event pairs, 215 based on Foata normal form. 2/2882 useless extension candidates. Maximal degree in co-relation 24614. Up to 2597 conditions per place. [2024-06-27 18:46:55,893 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 470 selfloop transitions, 49 changer transitions 0/528 dead transitions. [2024-06-27 18:46:55,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 528 transitions, 9533 flow [2024-06-27 18:46:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:46:55,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 18:46:55,894 INFO L175 Difference]: Start difference. First operand has 399 places, 500 transitions, 8297 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:46:55,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 528 transitions, 9533 flow [2024-06-27 18:46:56,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 528 transitions, 9395 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:56,756 INFO L231 Difference]: Finished difference. Result has 402 places, 502 transitions, 8327 flow [2024-06-27 18:46:56,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8327, PETRI_PLACES=402, PETRI_TRANSITIONS=502} [2024-06-27 18:46:56,757 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-27 18:46:56,757 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 502 transitions, 8327 flow [2024-06-27 18:46:56,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:56,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:56,757 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 18:46:56,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:46:56,757 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 18:46:56,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:56,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1643529240, now seen corresponding path program 6 times [2024-06-27 18:46:56,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:56,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573849509] [2024-06-27 18:46:56,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:56,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:57,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:57,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573849509] [2024-06-27 18:46:57,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573849509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:57,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:57,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:57,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59881139] [2024-06-27 18:46:57,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:57,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:57,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:57,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:57,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:57,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:46:57,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 502 transitions, 8327 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:57,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:57,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:46:57,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:58,897 INFO L124 PetriNetUnfolderBase]: 1700/3215 cut-off events. [2024-06-27 18:46:58,898 INFO L125 PetriNetUnfolderBase]: For 195348/195348 co-relation queries the response was YES. [2024-06-27 18:46:58,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25087 conditions, 3215 events. 1700/3215 cut-off events. For 195348/195348 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 21385 event pairs, 199 based on Foata normal form. 2/2944 useless extension candidates. Maximal degree in co-relation 24911. Up to 2665 conditions per place. [2024-06-27 18:46:58,946 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 480 selfloop transitions, 40 changer transitions 0/529 dead transitions. [2024-06-27 18:46:58,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 529 transitions, 9528 flow [2024-06-27 18:46:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:46:58,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:46:58,947 INFO L175 Difference]: Start difference. First operand has 402 places, 502 transitions, 8327 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:46:58,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 529 transitions, 9528 flow [2024-06-27 18:46:59,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 529 transitions, 9424 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:46:59,771 INFO L231 Difference]: Finished difference. Result has 409 places, 505 transitions, 8375 flow [2024-06-27 18:46:59,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8224, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8375, PETRI_PLACES=409, PETRI_TRANSITIONS=505} [2024-06-27 18:46:59,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-27 18:46:59,772 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 505 transitions, 8375 flow [2024-06-27 18:46:59,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:59,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:59,772 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 18:46:59,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:46:59,772 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 18:46:59,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:59,772 INFO L85 PathProgramCache]: Analyzing trace with hash -183587040, now seen corresponding path program 1 times [2024-06-27 18:46:59,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:59,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925527514] [2024-06-27 18:46:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:59,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:01,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925527514] [2024-06-27 18:47:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925527514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:01,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878795027] [2024-06-27 18:47:01,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:01,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:01,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:01,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:01,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:01,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:01,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 505 transitions, 8375 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:01,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:01,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:01,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:02,521 INFO L124 PetriNetUnfolderBase]: 1714/3243 cut-off events. [2024-06-27 18:47:02,521 INFO L125 PetriNetUnfolderBase]: For 199685/199685 co-relation queries the response was YES. [2024-06-27 18:47:02,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25303 conditions, 3243 events. 1714/3243 cut-off events. For 199685/199685 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 21573 event pairs, 217 based on Foata normal form. 2/2969 useless extension candidates. Maximal degree in co-relation 25124. Up to 2624 conditions per place. [2024-06-27 18:47:02,561 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 448 selfloop transitions, 76 changer transitions 0/533 dead transitions. [2024-06-27 18:47:02,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 533 transitions, 9722 flow [2024-06-27 18:47:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:02,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:47:02,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:47:02,562 INFO L175 Difference]: Start difference. First operand has 409 places, 505 transitions, 8375 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:47:02,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 533 transitions, 9722 flow [2024-06-27 18:47:03,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 533 transitions, 9640 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:47:03,321 INFO L231 Difference]: Finished difference. Result has 416 places, 510 transitions, 8639 flow [2024-06-27 18:47:03,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8293, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8639, PETRI_PLACES=416, PETRI_TRANSITIONS=510} [2024-06-27 18:47:03,322 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-27 18:47:03,322 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 510 transitions, 8639 flow [2024-06-27 18:47:03,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:03,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:03,322 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 18:47:03,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:47:03,322 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 18:47:03,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash -183356400, now seen corresponding path program 2 times [2024-06-27 18:47:03,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:03,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975604888] [2024-06-27 18:47:03,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:04,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975604888] [2024-06-27 18:47:04,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975604888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:04,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:04,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912623095] [2024-06-27 18:47:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:04,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:04,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:04,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:04,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 510 transitions, 8639 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:04,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:04,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:04,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:05,560 INFO L124 PetriNetUnfolderBase]: 1710/3237 cut-off events. [2024-06-27 18:47:05,560 INFO L125 PetriNetUnfolderBase]: For 191688/191688 co-relation queries the response was YES. [2024-06-27 18:47:05,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25032 conditions, 3237 events. 1710/3237 cut-off events. For 191688/191688 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 21512 event pairs, 217 based on Foata normal form. 2/2963 useless extension candidates. Maximal degree in co-relation 24851. Up to 2618 conditions per place. [2024-06-27 18:47:05,605 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 449 selfloop transitions, 75 changer transitions 0/533 dead transitions. [2024-06-27 18:47:05,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 533 transitions, 9825 flow [2024-06-27 18:47:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:47:05,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:47:05,606 INFO L175 Difference]: Start difference. First operand has 416 places, 510 transitions, 8639 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:47:05,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 533 transitions, 9825 flow [2024-06-27 18:47:06,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 533 transitions, 9526 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:06,403 INFO L231 Difference]: Finished difference. Result has 419 places, 510 transitions, 8498 flow [2024-06-27 18:47:06,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8340, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8498, PETRI_PLACES=419, PETRI_TRANSITIONS=510} [2024-06-27 18:47:06,403 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 18:47:06,403 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 510 transitions, 8498 flow [2024-06-27 18:47:06,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:06,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:06,403 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 18:47:06,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:47:06,404 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 18:47:06,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:06,404 INFO L85 PathProgramCache]: Analyzing trace with hash -183347720, now seen corresponding path program 1 times [2024-06-27 18:47:06,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:06,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107729859] [2024-06-27 18:47:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:06,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:07,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:07,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107729859] [2024-06-27 18:47:07,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107729859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:07,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:07,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:07,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300618846] [2024-06-27 18:47:07,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:07,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:07,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:07,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 510 transitions, 8498 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:07,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:07,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:07,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:08,395 INFO L124 PetriNetUnfolderBase]: 1798/3458 cut-off events. [2024-06-27 18:47:08,396 INFO L125 PetriNetUnfolderBase]: For 248020/248020 co-relation queries the response was YES. [2024-06-27 18:47:08,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26171 conditions, 3458 events. 1798/3458 cut-off events. For 248020/248020 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 23529 event pairs, 258 based on Foata normal form. 12/3184 useless extension candidates. Maximal degree in co-relation 25989. Up to 2620 conditions per place. [2024-06-27 18:47:08,448 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 468 selfloop transitions, 63 changer transitions 0/540 dead transitions. [2024-06-27 18:47:08,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 540 transitions, 9838 flow [2024-06-27 18:47:08,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:08,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:47:08,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:47:08,450 INFO L175 Difference]: Start difference. First operand has 419 places, 510 transitions, 8498 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:47:08,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 540 transitions, 9838 flow [2024-06-27 18:47:09,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 540 transitions, 9595 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 18:47:09,305 INFO L231 Difference]: Finished difference. Result has 418 places, 511 transitions, 8447 flow [2024-06-27 18:47:09,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8255, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8447, PETRI_PLACES=418, PETRI_TRANSITIONS=511} [2024-06-27 18:47:09,306 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-27 18:47:09,306 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 511 transitions, 8447 flow [2024-06-27 18:47:09,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:09,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:09,306 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 18:47:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:47:09,306 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 18:47:09,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:09,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1736771444, now seen corresponding path program 7 times [2024-06-27 18:47:09,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:09,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309917885] [2024-06-27 18:47:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:09,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:10,342 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 18:47:10,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:10,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309917885] [2024-06-27 18:47:10,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309917885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:10,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:10,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:10,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359760626] [2024-06-27 18:47:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:10,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:10,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:10,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:10,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:10,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 511 transitions, 8447 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:10,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:10,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:10,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:11,500 INFO L124 PetriNetUnfolderBase]: 1815/3501 cut-off events. [2024-06-27 18:47:11,500 INFO L125 PetriNetUnfolderBase]: For 205016/205016 co-relation queries the response was YES. [2024-06-27 18:47:11,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26426 conditions, 3501 events. 1815/3501 cut-off events. For 205016/205016 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23933 event pairs, 252 based on Foata normal form. 2/3207 useless extension candidates. Maximal degree in co-relation 26243. Up to 2741 conditions per place. [2024-06-27 18:47:11,553 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 426 selfloop transitions, 99 changer transitions 0/534 dead transitions. [2024-06-27 18:47:11,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 534 transitions, 9661 flow [2024-06-27 18:47:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:47:11,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:47:11,554 INFO L175 Difference]: Start difference. First operand has 418 places, 511 transitions, 8447 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:47:11,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 534 transitions, 9661 flow [2024-06-27 18:47:12,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 534 transitions, 9503 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:12,498 INFO L231 Difference]: Finished difference. Result has 420 places, 512 transitions, 8533 flow [2024-06-27 18:47:12,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8289, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8533, PETRI_PLACES=420, PETRI_TRANSITIONS=512} [2024-06-27 18:47:12,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-27 18:47:12,498 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 512 transitions, 8533 flow [2024-06-27 18:47:12,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:12,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:12,498 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 18:47:12,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:47:12,498 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 18:47:12,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1508870294, now seen corresponding path program 8 times [2024-06-27 18:47:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:12,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314407810] [2024-06-27 18:47:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:12,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:13,526 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 18:47:13,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:13,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314407810] [2024-06-27 18:47:13,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314407810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:13,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:13,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:13,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566165198] [2024-06-27 18:47:13,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:13,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:13,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:13,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:13,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:13,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 512 transitions, 8533 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:13,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:13,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:13,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:14,735 INFO L124 PetriNetUnfolderBase]: 1832/3540 cut-off events. [2024-06-27 18:47:14,735 INFO L125 PetriNetUnfolderBase]: For 206398/206398 co-relation queries the response was YES. [2024-06-27 18:47:14,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26676 conditions, 3540 events. 1832/3540 cut-off events. For 206398/206398 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24316 event pairs, 260 based on Foata normal form. 2/3243 useless extension candidates. Maximal degree in co-relation 26492. Up to 2872 conditions per place. [2024-06-27 18:47:14,789 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 458 selfloop transitions, 72 changer transitions 0/539 dead transitions. [2024-06-27 18:47:14,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 539 transitions, 9840 flow [2024-06-27 18:47:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:47:14,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 18:47:14,790 INFO L175 Difference]: Start difference. First operand has 420 places, 512 transitions, 8533 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:47:14,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 539 transitions, 9840 flow [2024-06-27 18:47:15,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 539 transitions, 9604 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:15,733 INFO L231 Difference]: Finished difference. Result has 423 places, 516 transitions, 8580 flow [2024-06-27 18:47:15,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8303, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8580, PETRI_PLACES=423, PETRI_TRANSITIONS=516} [2024-06-27 18:47:15,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-27 18:47:15,733 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 516 transitions, 8580 flow [2024-06-27 18:47:15,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:15,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:15,734 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 18:47:15,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:47:15,734 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 18:47:15,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:15,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1508692664, now seen corresponding path program 9 times [2024-06-27 18:47:15,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:15,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329438085] [2024-06-27 18:47:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:15,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:16,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:16,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329438085] [2024-06-27 18:47:16,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329438085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:16,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:16,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:16,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460790997] [2024-06-27 18:47:16,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:16,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:16,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:16,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:16,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:17,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:17,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 516 transitions, 8580 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:17,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:17,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:17,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:18,072 INFO L124 PetriNetUnfolderBase]: 1849/3572 cut-off events. [2024-06-27 18:47:18,073 INFO L125 PetriNetUnfolderBase]: For 209913/209913 co-relation queries the response was YES. [2024-06-27 18:47:18,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26786 conditions, 3572 events. 1849/3572 cut-off events. For 209913/209913 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 24607 event pairs, 254 based on Foata normal form. 2/3274 useless extension candidates. Maximal degree in co-relation 26600. Up to 2883 conditions per place. [2024-06-27 18:47:18,130 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 469 selfloop transitions, 66 changer transitions 0/544 dead transitions. [2024-06-27 18:47:18,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 544 transitions, 9843 flow [2024-06-27 18:47:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:47:18,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:47:18,131 INFO L175 Difference]: Start difference. First operand has 423 places, 516 transitions, 8580 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:47:18,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 544 transitions, 9843 flow [2024-06-27 18:47:19,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 544 transitions, 9690 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:47:19,174 INFO L231 Difference]: Finished difference. Result has 427 places, 517 transitions, 8607 flow [2024-06-27 18:47:19,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8427, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8607, PETRI_PLACES=427, PETRI_TRANSITIONS=517} [2024-06-27 18:47:19,174 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 386 predicate places. [2024-06-27 18:47:19,174 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 517 transitions, 8607 flow [2024-06-27 18:47:19,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:19,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:19,174 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 18:47:19,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:47:19,175 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 18:47:19,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:19,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1515126404, now seen corresponding path program 10 times [2024-06-27 18:47:19,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:19,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147448783] [2024-06-27 18:47:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:19,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:20,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147448783] [2024-06-27 18:47:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147448783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:20,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699220159] [2024-06-27 18:47:20,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:20,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:20,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 517 transitions, 8607 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:20,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:20,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:20,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:21,410 INFO L124 PetriNetUnfolderBase]: 1866/3620 cut-off events. [2024-06-27 18:47:21,410 INFO L125 PetriNetUnfolderBase]: For 214293/214293 co-relation queries the response was YES. [2024-06-27 18:47:21,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26995 conditions, 3620 events. 1866/3620 cut-off events. For 214293/214293 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 25047 event pairs, 271 based on Foata normal form. 2/3318 useless extension candidates. Maximal degree in co-relation 26808. Up to 2909 conditions per place. [2024-06-27 18:47:21,465 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 446 selfloop transitions, 85 changer transitions 0/540 dead transitions. [2024-06-27 18:47:21,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 540 transitions, 9839 flow [2024-06-27 18:47:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:21,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:47:21,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:47:21,466 INFO L175 Difference]: Start difference. First operand has 427 places, 517 transitions, 8607 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:47:21,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 540 transitions, 9839 flow [2024-06-27 18:47:22,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 540 transitions, 9669 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:22,605 INFO L231 Difference]: Finished difference. Result has 429 places, 518 transitions, 8660 flow [2024-06-27 18:47:22,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8437, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8660, PETRI_PLACES=429, PETRI_TRANSITIONS=518} [2024-06-27 18:47:22,606 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-27 18:47:22,606 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 518 transitions, 8660 flow [2024-06-27 18:47:22,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:22,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:22,606 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 18:47:22,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:47:22,606 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 18:47:22,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:22,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1736778388, now seen corresponding path program 3 times [2024-06-27 18:47:22,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:22,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25763386] [2024-06-27 18:47:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:22,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:23,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:23,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25763386] [2024-06-27 18:47:23,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25763386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:23,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:23,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:23,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146997743] [2024-06-27 18:47:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:23,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:24,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:24,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 518 transitions, 8660 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:24,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:24,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:24,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:25,508 INFO L124 PetriNetUnfolderBase]: 1880/3636 cut-off events. [2024-06-27 18:47:25,508 INFO L125 PetriNetUnfolderBase]: For 216891/216891 co-relation queries the response was YES. [2024-06-27 18:47:25,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27121 conditions, 3636 events. 1880/3636 cut-off events. For 216891/216891 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 25118 event pairs, 269 based on Foata normal form. 2/3328 useless extension candidates. Maximal degree in co-relation 26933. Up to 2432 conditions per place. [2024-06-27 18:47:25,563 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 309 selfloop transitions, 227 changer transitions 0/545 dead transitions. [2024-06-27 18:47:25,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 545 transitions, 10452 flow [2024-06-27 18:47:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:47:25,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:47:25,564 INFO L175 Difference]: Start difference. First operand has 429 places, 518 transitions, 8660 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:47:25,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 545 transitions, 10452 flow [2024-06-27 18:47:26,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 545 transitions, 10245 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:26,629 INFO L231 Difference]: Finished difference. Result has 432 places, 522 transitions, 9054 flow [2024-06-27 18:47:26,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8453, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9054, PETRI_PLACES=432, PETRI_TRANSITIONS=522} [2024-06-27 18:47:26,630 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 391 predicate places. [2024-06-27 18:47:26,630 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 522 transitions, 9054 flow [2024-06-27 18:47:26,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:26,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:26,630 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 18:47:26,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:47:26,630 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 18:47:26,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:26,631 INFO L85 PathProgramCache]: Analyzing trace with hash 80065858, now seen corresponding path program 4 times [2024-06-27 18:47:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:26,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424148423] [2024-06-27 18:47:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:27,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424148423] [2024-06-27 18:47:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424148423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:27,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167092875] [2024-06-27 18:47:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:27,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:28,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:28,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 522 transitions, 9054 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:28,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:28,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:28,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:29,407 INFO L124 PetriNetUnfolderBase]: 1903/3676 cut-off events. [2024-06-27 18:47:29,408 INFO L125 PetriNetUnfolderBase]: For 229123/229123 co-relation queries the response was YES. [2024-06-27 18:47:29,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28095 conditions, 3676 events. 1903/3676 cut-off events. For 229123/229123 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 25395 event pairs, 265 based on Foata normal form. 2/3362 useless extension candidates. Maximal degree in co-relation 27906. Up to 2882 conditions per place. [2024-06-27 18:47:29,466 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 420 selfloop transitions, 121 changer transitions 0/550 dead transitions. [2024-06-27 18:47:29,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 550 transitions, 10948 flow [2024-06-27 18:47:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:29,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:47:29,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:47:29,467 INFO L175 Difference]: Start difference. First operand has 432 places, 522 transitions, 9054 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:47:29,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 550 transitions, 10948 flow [2024-06-27 18:47:30,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 550 transitions, 10413 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:30,614 INFO L231 Difference]: Finished difference. Result has 435 places, 528 transitions, 9027 flow [2024-06-27 18:47:30,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8531, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9027, PETRI_PLACES=435, PETRI_TRANSITIONS=528} [2024-06-27 18:47:30,614 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-27 18:47:30,614 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 528 transitions, 9027 flow [2024-06-27 18:47:30,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:30,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:30,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:30,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:47:30,615 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 18:47:30,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:30,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1515372668, now seen corresponding path program 2 times [2024-06-27 18:47:30,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:30,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958645543] [2024-06-27 18:47:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:30,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:31,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:31,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958645543] [2024-06-27 18:47:31,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958645543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:31,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:31,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:31,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232076957] [2024-06-27 18:47:31,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:31,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:31,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:31,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:31,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:31,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:31,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 528 transitions, 9027 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:31,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:31,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:31,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:32,722 INFO L124 PetriNetUnfolderBase]: 1991/3899 cut-off events. [2024-06-27 18:47:32,723 INFO L125 PetriNetUnfolderBase]: For 293455/293455 co-relation queries the response was YES. [2024-06-27 18:47:32,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28966 conditions, 3899 events. 1991/3899 cut-off events. For 293455/293455 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 27485 event pairs, 309 based on Foata normal form. 12/3584 useless extension candidates. Maximal degree in co-relation 28777. Up to 2933 conditions per place. [2024-06-27 18:47:32,780 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 456 selfloop transitions, 90 changer transitions 0/555 dead transitions. [2024-06-27 18:47:32,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 555 transitions, 10385 flow [2024-06-27 18:47:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:47:32,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:47:32,781 INFO L175 Difference]: Start difference. First operand has 435 places, 528 transitions, 9027 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:47:32,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 555 transitions, 10385 flow [2024-06-27 18:47:33,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 555 transitions, 9935 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:33,988 INFO L231 Difference]: Finished difference. Result has 436 places, 529 transitions, 8826 flow [2024-06-27 18:47:33,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8577, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8826, PETRI_PLACES=436, PETRI_TRANSITIONS=529} [2024-06-27 18:47:33,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-27 18:47:33,988 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 529 transitions, 8826 flow [2024-06-27 18:47:33,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:33,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:33,988 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 18:47:33,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:47:33,989 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 18:47:33,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:33,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1515372358, now seen corresponding path program 5 times [2024-06-27 18:47:33,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:33,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51040429] [2024-06-27 18:47:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:33,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51040429] [2024-06-27 18:47:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51040429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:35,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:35,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:35,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378534784] [2024-06-27 18:47:35,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:35,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:35,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:35,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 529 transitions, 8826 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:35,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:35,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:35,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:36,498 INFO L124 PetriNetUnfolderBase]: 2000/3912 cut-off events. [2024-06-27 18:47:36,498 INFO L125 PetriNetUnfolderBase]: For 226399/226399 co-relation queries the response was YES. [2024-06-27 18:47:36,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28573 conditions, 3912 events. 2000/3912 cut-off events. For 226399/226399 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 27592 event pairs, 311 based on Foata normal form. 1/3573 useless extension candidates. Maximal degree in co-relation 28384. Up to 3164 conditions per place. [2024-06-27 18:47:36,561 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 444 selfloop transitions, 98 changer transitions 0/551 dead transitions. [2024-06-27 18:47:36,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 551 transitions, 10138 flow [2024-06-27 18:47:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:47:36,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:47:36,562 INFO L175 Difference]: Start difference. First operand has 436 places, 529 transitions, 8826 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:47:36,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 551 transitions, 10138 flow [2024-06-27 18:47:37,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 551 transitions, 9921 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:37,846 INFO L231 Difference]: Finished difference. Result has 440 places, 536 transitions, 9015 flow [2024-06-27 18:47:37,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8613, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9015, PETRI_PLACES=440, PETRI_TRANSITIONS=536} [2024-06-27 18:47:37,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 18:47:37,847 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 536 transitions, 9015 flow [2024-06-27 18:47:37,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:37,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:37,847 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 18:47:37,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:47:37,847 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 18:47:37,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 301950218, now seen corresponding path program 3 times [2024-06-27 18:47:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:37,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911547279] [2024-06-27 18:47:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:38,675 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 18:47:38,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:38,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911547279] [2024-06-27 18:47:38,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911547279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:38,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:38,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:38,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835374611] [2024-06-27 18:47:38,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:38,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:38,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:38,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:38,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:38,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 536 transitions, 9015 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:38,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:38,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:38,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:39,993 INFO L124 PetriNetUnfolderBase]: 2017/3952 cut-off events. [2024-06-27 18:47:39,993 INFO L125 PetriNetUnfolderBase]: For 236591/236591 co-relation queries the response was YES. [2024-06-27 18:47:40,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28938 conditions, 3952 events. 2017/3952 cut-off events. For 236591/236591 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 27976 event pairs, 312 based on Foata normal form. 2/3614 useless extension candidates. Maximal degree in co-relation 28747. Up to 2974 conditions per place. [2024-06-27 18:47:40,055 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 420 selfloop transitions, 130 changer transitions 0/559 dead transitions. [2024-06-27 18:47:40,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 559 transitions, 10299 flow [2024-06-27 18:47:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:40,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:47:40,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:47:40,056 INFO L175 Difference]: Start difference. First operand has 440 places, 536 transitions, 9015 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:47:40,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 559 transitions, 10299 flow [2024-06-27 18:47:41,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 559 transitions, 10038 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:41,245 INFO L231 Difference]: Finished difference. Result has 441 places, 537 transitions, 9079 flow [2024-06-27 18:47:41,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8754, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9079, PETRI_PLACES=441, PETRI_TRANSITIONS=537} [2024-06-27 18:47:41,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-27 18:47:41,246 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 537 transitions, 9079 flow [2024-06-27 18:47:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:41,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:41,246 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 18:47:41,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:47:41,246 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 18:47:41,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1737009028, now seen corresponding path program 6 times [2024-06-27 18:47:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:41,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032767884] [2024-06-27 18:47:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:42,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:42,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032767884] [2024-06-27 18:47:42,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032767884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:42,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:42,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:42,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444614737] [2024-06-27 18:47:42,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:42,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:42,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:42,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:42,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:42,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:42,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 537 transitions, 9079 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:42,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:42,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:42,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:44,194 INFO L124 PetriNetUnfolderBase]: 2013/3946 cut-off events. [2024-06-27 18:47:44,194 INFO L125 PetriNetUnfolderBase]: For 224497/224497 co-relation queries the response was YES. [2024-06-27 18:47:44,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28681 conditions, 3946 events. 2013/3946 cut-off events. For 224497/224497 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 27936 event pairs, 312 based on Foata normal form. 2/3607 useless extension candidates. Maximal degree in co-relation 28490. Up to 2756 conditions per place. [2024-06-27 18:47:44,259 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 359 selfloop transitions, 191 changer transitions 0/559 dead transitions. [2024-06-27 18:47:44,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 559 transitions, 10747 flow [2024-06-27 18:47:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:47:44,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:47:44,260 INFO L175 Difference]: Start difference. First operand has 441 places, 537 transitions, 9079 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:47:44,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 559 transitions, 10747 flow [2024-06-27 18:47:45,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 559 transitions, 10346 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:45,477 INFO L231 Difference]: Finished difference. Result has 444 places, 537 transitions, 9069 flow [2024-06-27 18:47:45,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8678, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9069, PETRI_PLACES=444, PETRI_TRANSITIONS=537} [2024-06-27 18:47:45,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-27 18:47:45,478 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 537 transitions, 9069 flow [2024-06-27 18:47:45,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:45,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:45,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:45,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:47:45,478 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 18:47:45,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2000750218, now seen corresponding path program 7 times [2024-06-27 18:47:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:45,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534200334] [2024-06-27 18:47:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:46,922 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 18:47:46,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:46,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534200334] [2024-06-27 18:47:46,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534200334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:46,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:46,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:46,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545169767] [2024-06-27 18:47:46,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:46,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:46,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:46,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:47,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:47,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 537 transitions, 9069 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:47,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:47,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:47,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:48,251 INFO L124 PetriNetUnfolderBase]: 2009/3940 cut-off events. [2024-06-27 18:47:48,251 INFO L125 PetriNetUnfolderBase]: For 209262/209262 co-relation queries the response was YES. [2024-06-27 18:47:48,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28096 conditions, 3940 events. 2009/3940 cut-off events. For 209262/209262 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 27895 event pairs, 312 based on Foata normal form. 2/3601 useless extension candidates. Maximal degree in co-relation 27904. Up to 2948 conditions per place. [2024-06-27 18:47:48,315 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 378 selfloop transitions, 172 changer transitions 0/559 dead transitions. [2024-06-27 18:47:48,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 559 transitions, 10322 flow [2024-06-27 18:47:48,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:47:48,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:47:48,316 INFO L175 Difference]: Start difference. First operand has 444 places, 537 transitions, 9069 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:47:48,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 559 transitions, 10322 flow [2024-06-27 18:47:49,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 559 transitions, 9773 flow, removed 52 selfloop flow, removed 11 redundant places. [2024-06-27 18:47:49,733 INFO L231 Difference]: Finished difference. Result has 446 places, 539 transitions, 8996 flow [2024-06-27 18:47:49,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8524, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8996, PETRI_PLACES=446, PETRI_TRANSITIONS=539} [2024-06-27 18:47:49,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-27 18:47:49,734 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 539 transitions, 8996 flow [2024-06-27 18:47:49,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:49,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:49,734 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 18:47:49,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:47:49,734 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 18:47:49,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:49,735 INFO L85 PathProgramCache]: Analyzing trace with hash -2000741538, now seen corresponding path program 4 times [2024-06-27 18:47:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:49,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117514530] [2024-06-27 18:47:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:49,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:50,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:50,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117514530] [2024-06-27 18:47:50,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117514530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:50,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:50,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:50,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441621529] [2024-06-27 18:47:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:50,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:50,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:50,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:50,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:50,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 539 transitions, 8996 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:50,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:50,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:50,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:51,855 INFO L124 PetriNetUnfolderBase]: 2026/3979 cut-off events. [2024-06-27 18:47:51,855 INFO L125 PetriNetUnfolderBase]: For 214513/214513 co-relation queries the response was YES. [2024-06-27 18:47:51,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28456 conditions, 3979 events. 2026/3979 cut-off events. For 214513/214513 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 28300 event pairs, 325 based on Foata normal form. 2/3639 useless extension candidates. Maximal degree in co-relation 28261. Up to 2993 conditions per place. [2024-06-27 18:47:51,920 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 417 selfloop transitions, 136 changer transitions 0/562 dead transitions. [2024-06-27 18:47:51,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 562 transitions, 10288 flow [2024-06-27 18:47:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:47:51,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:47:51,922 INFO L175 Difference]: Start difference. First operand has 446 places, 539 transitions, 8996 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:47:51,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 562 transitions, 10288 flow [2024-06-27 18:47:53,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 562 transitions, 10014 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:53,090 INFO L231 Difference]: Finished difference. Result has 448 places, 540 transitions, 9061 flow [2024-06-27 18:47:53,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8722, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9061, PETRI_PLACES=448, PETRI_TRANSITIONS=540} [2024-06-27 18:47:53,091 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 18:47:53,091 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 540 transitions, 9061 flow [2024-06-27 18:47:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:53,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:53,091 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 18:47:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:47:53,091 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 18:47:53,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:53,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1745359808, now seen corresponding path program 5 times [2024-06-27 18:47:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:53,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29968709] [2024-06-27 18:47:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:54,042 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 18:47:54,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:54,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29968709] [2024-06-27 18:47:54,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29968709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:54,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:54,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:54,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654528944] [2024-06-27 18:47:54,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:54,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:54,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:54,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:54,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:54,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:54,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 540 transitions, 9061 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:54,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:54,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:54,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:55,377 INFO L124 PetriNetUnfolderBase]: 2043/4017 cut-off events. [2024-06-27 18:47:55,378 INFO L125 PetriNetUnfolderBase]: For 224625/224625 co-relation queries the response was YES. [2024-06-27 18:47:55,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28983 conditions, 4017 events. 2043/4017 cut-off events. For 224625/224625 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 28607 event pairs, 315 based on Foata normal form. 2/3684 useless extension candidates. Maximal degree in co-relation 28787. Up to 2551 conditions per place. [2024-06-27 18:47:55,442 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 412 selfloop transitions, 152 changer transitions 0/573 dead transitions. [2024-06-27 18:47:55,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 573 transitions, 10491 flow [2024-06-27 18:47:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:47:55,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:47:55,443 INFO L175 Difference]: Start difference. First operand has 448 places, 540 transitions, 9061 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:47:55,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 573 transitions, 10491 flow [2024-06-27 18:47:56,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 573 transitions, 10164 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:56,624 INFO L231 Difference]: Finished difference. Result has 451 places, 541 transitions, 9106 flow [2024-06-27 18:47:56,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8734, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9106, PETRI_PLACES=451, PETRI_TRANSITIONS=541} [2024-06-27 18:47:56,624 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-27 18:47:56,624 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 541 transitions, 9106 flow [2024-06-27 18:47:56,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:56,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:56,624 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 18:47:56,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:47:56,625 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:56,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:56,625 INFO L85 PathProgramCache]: Analyzing trace with hash 64645906, now seen corresponding path program 11 times [2024-06-27 18:47:56,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:56,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817783509] [2024-06-27 18:47:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:56,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:57,976 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 18:47:57,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:57,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817783509] [2024-06-27 18:47:57,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817783509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:57,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:57,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:57,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312346099] [2024-06-27 18:47:57,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:57,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:57,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:57,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:58,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:47:58,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 541 transitions, 9106 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:58,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:58,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:47:58,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:59,474 INFO L124 PetriNetUnfolderBase]: 2060/4060 cut-off events. [2024-06-27 18:47:59,474 INFO L125 PetriNetUnfolderBase]: For 225345/225345 co-relation queries the response was YES. [2024-06-27 18:47:59,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29148 conditions, 4060 events. 2060/4060 cut-off events. For 225345/225345 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29078 event pairs, 337 based on Foata normal form. 2/3711 useless extension candidates. Maximal degree in co-relation 28951. Up to 3110 conditions per place. [2024-06-27 18:47:59,530 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 428 selfloop transitions, 125 changer transitions 0/562 dead transitions. [2024-06-27 18:47:59,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 562 transitions, 10378 flow [2024-06-27 18:47:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:47:59,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:47:59,531 INFO L175 Difference]: Start difference. First operand has 451 places, 541 transitions, 9106 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:47:59,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 562 transitions, 10378 flow [2024-06-27 18:48:00,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 562 transitions, 10031 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:00,733 INFO L231 Difference]: Finished difference. Result has 453 places, 542 transitions, 9061 flow [2024-06-27 18:48:00,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8759, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9061, PETRI_PLACES=453, PETRI_TRANSITIONS=542} [2024-06-27 18:48:00,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-27 18:48:00,733 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 542 transitions, 9061 flow [2024-06-27 18:48:00,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:00,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:00,733 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 18:48:00,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:48:00,734 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 18:48:00,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:00,734 INFO L85 PathProgramCache]: Analyzing trace with hash 483801106, now seen corresponding path program 12 times [2024-06-27 18:48:00,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:00,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977507836] [2024-06-27 18:48:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:01,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:01,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977507836] [2024-06-27 18:48:01,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977507836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:01,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:01,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:01,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493869459] [2024-06-27 18:48:01,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:01,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:01,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:01,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:01,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:01,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:01,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 542 transitions, 9061 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:01,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:01,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:01,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:03,209 INFO L124 PetriNetUnfolderBase]: 2077/4098 cut-off events. [2024-06-27 18:48:03,209 INFO L125 PetriNetUnfolderBase]: For 225874/225874 co-relation queries the response was YES. [2024-06-27 18:48:03,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29050 conditions, 4098 events. 2077/4098 cut-off events. For 225874/225874 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 29456 event pairs, 346 based on Foata normal form. 2/3745 useless extension candidates. Maximal degree in co-relation 28852. Up to 3246 conditions per place. [2024-06-27 18:48:03,271 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 443 selfloop transitions, 111 changer transitions 0/563 dead transitions. [2024-06-27 18:48:03,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 563 transitions, 10326 flow [2024-06-27 18:48:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:48:03,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 18:48:03,273 INFO L175 Difference]: Start difference. First operand has 453 places, 542 transitions, 9061 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:48:03,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 563 transitions, 10326 flow [2024-06-27 18:48:04,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 563 transitions, 10032 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:04,531 INFO L231 Difference]: Finished difference. Result has 456 places, 544 transitions, 9065 flow [2024-06-27 18:48:04,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8769, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9065, PETRI_PLACES=456, PETRI_TRANSITIONS=544} [2024-06-27 18:48:04,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-27 18:48:04,531 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 544 transitions, 9065 flow [2024-06-27 18:48:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:04,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:04,531 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 18:48:04,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:48:04,531 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 18:48:04,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash 733499000, now seen corresponding path program 13 times [2024-06-27 18:48:04,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:04,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406547610] [2024-06-27 18:48:04,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:04,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:05,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:05,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406547610] [2024-06-27 18:48:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406547610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717545712] [2024-06-27 18:48:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:05,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:05,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:05,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:05,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 544 transitions, 9065 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:05,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:05,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:05,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:06,985 INFO L124 PetriNetUnfolderBase]: 2094/4132 cut-off events. [2024-06-27 18:48:06,985 INFO L125 PetriNetUnfolderBase]: For 229601/229601 co-relation queries the response was YES. [2024-06-27 18:48:07,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29158 conditions, 4132 events. 2094/4132 cut-off events. For 229601/229601 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 29760 event pairs, 333 based on Foata normal form. 2/3779 useless extension candidates. Maximal degree in co-relation 28958. Up to 3308 conditions per place. [2024-06-27 18:48:07,050 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 484 selfloop transitions, 75 changer transitions 0/568 dead transitions. [2024-06-27 18:48:07,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 568 transitions, 10345 flow [2024-06-27 18:48:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:48:07,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:48:07,051 INFO L175 Difference]: Start difference. First operand has 456 places, 544 transitions, 9065 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:48:07,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 568 transitions, 10345 flow [2024-06-27 18:48:08,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 568 transitions, 10086 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:48:08,492 INFO L231 Difference]: Finished difference. Result has 459 places, 545 transitions, 9012 flow [2024-06-27 18:48:08,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8806, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9012, PETRI_PLACES=459, PETRI_TRANSITIONS=545} [2024-06-27 18:48:08,492 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-27 18:48:08,492 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 545 transitions, 9012 flow [2024-06-27 18:48:08,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:08,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:08,492 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 18:48:08,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:48:08,493 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 18:48:08,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash 961577780, now seen corresponding path program 14 times [2024-06-27 18:48:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:08,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651684570] [2024-06-27 18:48:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:09,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:09,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651684570] [2024-06-27 18:48:09,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651684570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:09,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:09,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:09,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396222060] [2024-06-27 18:48:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:09,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:09,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:09,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 545 transitions, 9012 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:09,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:09,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:09,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:11,330 INFO L124 PetriNetUnfolderBase]: 2122/4209 cut-off events. [2024-06-27 18:48:11,330 INFO L125 PetriNetUnfolderBase]: For 233789/233789 co-relation queries the response was YES. [2024-06-27 18:48:11,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29361 conditions, 4209 events. 2122/4209 cut-off events. For 233789/233789 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 30599 event pairs, 358 based on Foata normal form. 2/3851 useless extension candidates. Maximal degree in co-relation 29160. Up to 3344 conditions per place. [2024-06-27 18:48:11,395 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 466 selfloop transitions, 94 changer transitions 0/569 dead transitions. [2024-06-27 18:48:11,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 569 transitions, 10336 flow [2024-06-27 18:48:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:48:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:48:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2024-06-27 18:48:11,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247104247104247 [2024-06-27 18:48:11,396 INFO L175 Difference]: Start difference. First operand has 459 places, 545 transitions, 9012 flow. Second operand 14 states and 220 transitions. [2024-06-27 18:48:11,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 569 transitions, 10336 flow [2024-06-27 18:48:12,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 569 transitions, 10137 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:12,714 INFO L231 Difference]: Finished difference. Result has 465 places, 549 transitions, 9101 flow [2024-06-27 18:48:12,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8816, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9101, PETRI_PLACES=465, PETRI_TRANSITIONS=549} [2024-06-27 18:48:12,715 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 18:48:12,715 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 549 transitions, 9101 flow [2024-06-27 18:48:12,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:12,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:12,715 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 18:48:12,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:48:12,715 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 18:48:12,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:12,715 INFO L85 PathProgramCache]: Analyzing trace with hash 739932740, now seen corresponding path program 15 times [2024-06-27 18:48:12,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:12,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691695024] [2024-06-27 18:48:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:12,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:13,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:13,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:13,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691695024] [2024-06-27 18:48:13,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691695024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:13,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:13,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:13,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389204304] [2024-06-27 18:48:13,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:13,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:13,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:13,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:13,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 549 transitions, 9101 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:13,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:13,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:13,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:15,292 INFO L124 PetriNetUnfolderBase]: 2150/4278 cut-off events. [2024-06-27 18:48:15,292 INFO L125 PetriNetUnfolderBase]: For 241155/241155 co-relation queries the response was YES. [2024-06-27 18:48:15,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29938 conditions, 4278 events. 2150/4278 cut-off events. For 241155/241155 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 31300 event pairs, 371 based on Foata normal form. 2/3915 useless extension candidates. Maximal degree in co-relation 29736. Up to 3414 conditions per place. [2024-06-27 18:48:15,361 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 476 selfloop transitions, 85 changer transitions 0/570 dead transitions. [2024-06-27 18:48:15,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 570 transitions, 10436 flow [2024-06-27 18:48:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:48:15,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:48:15,362 INFO L175 Difference]: Start difference. First operand has 465 places, 549 transitions, 9101 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:48:15,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 570 transitions, 10436 flow [2024-06-27 18:48:16,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 570 transitions, 10176 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:16,891 INFO L231 Difference]: Finished difference. Result has 466 places, 551 transitions, 9132 flow [2024-06-27 18:48:16,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8894, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9132, PETRI_PLACES=466, PETRI_TRANSITIONS=551} [2024-06-27 18:48:16,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-27 18:48:16,892 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 551 transitions, 9132 flow [2024-06-27 18:48:16,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:16,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:16,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:16,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:48:16,892 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 18:48:16,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 969858934, now seen corresponding path program 8 times [2024-06-27 18:48:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:16,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675414622] [2024-06-27 18:48:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:18,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675414622] [2024-06-27 18:48:18,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675414622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:18,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493146348] [2024-06-27 18:48:18,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:18,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:18,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:18,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 551 transitions, 9132 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:18,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:18,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:19,898 INFO L124 PetriNetUnfolderBase]: 2148/4275 cut-off events. [2024-06-27 18:48:19,898 INFO L125 PetriNetUnfolderBase]: For 222626/222626 co-relation queries the response was YES. [2024-06-27 18:48:19,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29256 conditions, 4275 events. 2148/4275 cut-off events. For 222626/222626 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 31272 event pairs, 371 based on Foata normal form. 1/3908 useless extension candidates. Maximal degree in co-relation 29053. Up to 3370 conditions per place. [2024-06-27 18:48:19,970 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 451 selfloop transitions, 108 changer transitions 0/568 dead transitions. [2024-06-27 18:48:19,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 568 transitions, 10356 flow [2024-06-27 18:48:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:48:19,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:48:19,971 INFO L175 Difference]: Start difference. First operand has 466 places, 551 transitions, 9132 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:48:19,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 568 transitions, 10356 flow [2024-06-27 18:48:21,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 568 transitions, 10094 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:21,395 INFO L231 Difference]: Finished difference. Result has 469 places, 551 transitions, 9091 flow [2024-06-27 18:48:21,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8870, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9091, PETRI_PLACES=469, PETRI_TRANSITIONS=551} [2024-06-27 18:48:21,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 18:48:21,396 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 551 transitions, 9091 flow [2024-06-27 18:48:21,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:21,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:21,396 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 18:48:21,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:48:21,396 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 18:48:21,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash 73224040, now seen corresponding path program 6 times [2024-06-27 18:48:21,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:21,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246816272] [2024-06-27 18:48:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:21,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:22,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:22,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246816272] [2024-06-27 18:48:22,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246816272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:22,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:22,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715802135] [2024-06-27 18:48:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:22,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:22,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:22,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:22,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:22,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 551 transitions, 9091 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:22,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:22,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:22,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:24,100 INFO L124 PetriNetUnfolderBase]: 2165/4314 cut-off events. [2024-06-27 18:48:24,100 INFO L125 PetriNetUnfolderBase]: For 233498/233498 co-relation queries the response was YES. [2024-06-27 18:48:24,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29432 conditions, 4314 events. 2165/4314 cut-off events. For 233498/233498 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 31669 event pairs, 384 based on Foata normal form. 2/3947 useless extension candidates. Maximal degree in co-relation 29228. Up to 3200 conditions per place. [2024-06-27 18:48:24,167 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 408 selfloop transitions, 159 changer transitions 0/576 dead transitions. [2024-06-27 18:48:24,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 576 transitions, 10437 flow [2024-06-27 18:48:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 18:48:24,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-27 18:48:24,168 INFO L175 Difference]: Start difference. First operand has 469 places, 551 transitions, 9091 flow. Second operand 12 states and 199 transitions. [2024-06-27 18:48:24,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 576 transitions, 10437 flow [2024-06-27 18:48:25,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 576 transitions, 10243 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:25,489 INFO L231 Difference]: Finished difference. Result has 473 places, 552 transitions, 9285 flow [2024-06-27 18:48:25,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8897, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9285, PETRI_PLACES=473, PETRI_TRANSITIONS=552} [2024-06-27 18:48:25,489 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-27 18:48:25,489 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 552 transitions, 9285 flow [2024-06-27 18:48:25,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:25,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:25,490 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 18:48:25,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:48:25,490 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 18:48:25,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:25,490 INFO L85 PathProgramCache]: Analyzing trace with hash 73234270, now seen corresponding path program 7 times [2024-06-27 18:48:25,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:25,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002156463] [2024-06-27 18:48:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:26,585 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 18:48:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:26,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002156463] [2024-06-27 18:48:26,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002156463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:26,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:26,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:26,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823994007] [2024-06-27 18:48:26,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:26,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:26,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:26,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:26,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:26,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 552 transitions, 9285 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:26,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:26,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:26,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:28,222 INFO L124 PetriNetUnfolderBase]: 2202/4396 cut-off events. [2024-06-27 18:48:28,222 INFO L125 PetriNetUnfolderBase]: For 266873/266873 co-relation queries the response was YES. [2024-06-27 18:48:28,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31041 conditions, 4396 events. 2202/4396 cut-off events. For 266873/266873 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 32459 event pairs, 388 based on Foata normal form. 2/4026 useless extension candidates. Maximal degree in co-relation 30836. Up to 3191 conditions per place. [2024-06-27 18:48:28,294 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 412 selfloop transitions, 160 changer transitions 0/581 dead transitions. [2024-06-27 18:48:28,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 581 transitions, 10955 flow [2024-06-27 18:48:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 18:48:28,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 18:48:28,295 INFO L175 Difference]: Start difference. First operand has 473 places, 552 transitions, 9285 flow. Second operand 11 states and 190 transitions. [2024-06-27 18:48:28,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 581 transitions, 10955 flow [2024-06-27 18:48:29,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 581 transitions, 10562 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-06-27 18:48:29,744 INFO L231 Difference]: Finished difference. Result has 473 places, 554 transitions, 9350 flow [2024-06-27 18:48:29,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8892, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9350, PETRI_PLACES=473, PETRI_TRANSITIONS=554} [2024-06-27 18:48:29,745 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-27 18:48:29,745 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 554 transitions, 9350 flow [2024-06-27 18:48:29,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:29,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:29,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:29,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:48:29,745 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 18:48:29,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:29,746 INFO L85 PathProgramCache]: Analyzing trace with hash 970166144, now seen corresponding path program 8 times [2024-06-27 18:48:29,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:29,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576415910] [2024-06-27 18:48:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:29,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:30,578 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 18:48:30,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:30,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576415910] [2024-06-27 18:48:30,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576415910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:30,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:30,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:30,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312292918] [2024-06-27 18:48:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:30,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:30,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:30,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:30,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:30,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 554 transitions, 9350 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:30,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:30,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:30,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:32,100 INFO L124 PetriNetUnfolderBase]: 2323/4681 cut-off events. [2024-06-27 18:48:32,100 INFO L125 PetriNetUnfolderBase]: For 369711/369711 co-relation queries the response was YES. [2024-06-27 18:48:32,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34377 conditions, 4681 events. 2323/4681 cut-off events. For 369711/369711 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35289 event pairs, 449 based on Foata normal form. 2/4297 useless extension candidates. Maximal degree in co-relation 34173. Up to 3444 conditions per place. [2024-06-27 18:48:32,181 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 476 selfloop transitions, 99 changer transitions 0/584 dead transitions. [2024-06-27 18:48:32,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 584 transitions, 11090 flow [2024-06-27 18:48:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:48:32,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:48:32,182 INFO L175 Difference]: Start difference. First operand has 473 places, 554 transitions, 9350 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:48:32,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 584 transitions, 11090 flow [2024-06-27 18:48:34,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 584 transitions, 10716 flow, removed 58 selfloop flow, removed 11 redundant places. [2024-06-27 18:48:34,170 INFO L231 Difference]: Finished difference. Result has 472 places, 556 transitions, 9316 flow [2024-06-27 18:48:34,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8992, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9316, PETRI_PLACES=472, PETRI_TRANSITIONS=556} [2024-06-27 18:48:34,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-27 18:48:34,171 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 556 transitions, 9316 flow [2024-06-27 18:48:34,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:34,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:34,171 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 18:48:34,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:48:34,171 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 18:48:34,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:34,172 INFO L85 PathProgramCache]: Analyzing trace with hash 739939684, now seen corresponding path program 9 times [2024-06-27 18:48:34,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:34,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366917662] [2024-06-27 18:48:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:34,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:35,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:35,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366917662] [2024-06-27 18:48:35,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366917662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:35,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:35,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:35,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567817884] [2024-06-27 18:48:35,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:35,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:35,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:35,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:35,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:35,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 556 transitions, 9316 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:35,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:35,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:35,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:37,257 INFO L124 PetriNetUnfolderBase]: 2330/4699 cut-off events. [2024-06-27 18:48:37,257 INFO L125 PetriNetUnfolderBase]: For 350196/350196 co-relation queries the response was YES. [2024-06-27 18:48:37,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33840 conditions, 4699 events. 2330/4699 cut-off events. For 350196/350196 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35473 event pairs, 462 based on Foata normal form. 1/4306 useless extension candidates. Maximal degree in co-relation 33638. Up to 3730 conditions per place. [2024-06-27 18:48:37,329 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 467 selfloop transitions, 100 changer transitions 0/576 dead transitions. [2024-06-27 18:48:37,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 576 transitions, 10868 flow [2024-06-27 18:48:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:37,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:48:37,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:48:37,330 INFO L175 Difference]: Start difference. First operand has 472 places, 556 transitions, 9316 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:48:37,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 576 transitions, 10868 flow [2024-06-27 18:48:39,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 576 transitions, 10672 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:48:39,166 INFO L231 Difference]: Finished difference. Result has 477 places, 558 transitions, 9396 flow [2024-06-27 18:48:39,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9120, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9396, PETRI_PLACES=477, PETRI_TRANSITIONS=558} [2024-06-27 18:48:39,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-27 18:48:39,167 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 558 transitions, 9396 flow [2024-06-27 18:48:39,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:39,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:39,168 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 18:48:39,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:48:39,168 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 18:48:39,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1207975808, now seen corresponding path program 9 times [2024-06-27 18:48:39,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:39,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81043574] [2024-06-27 18:48:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:39,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81043574] [2024-06-27 18:48:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81043574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:40,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:40,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12214714] [2024-06-27 18:48:40,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:40,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:40,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:40,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:40,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 558 transitions, 9396 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:40,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:40,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:40,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:42,340 INFO L124 PetriNetUnfolderBase]: 2367/4779 cut-off events. [2024-06-27 18:48:42,341 INFO L125 PetriNetUnfolderBase]: For 381805/381805 co-relation queries the response was YES. [2024-06-27 18:48:42,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34879 conditions, 4779 events. 2367/4779 cut-off events. For 381805/381805 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 36291 event pairs, 567 based on Foata normal form. 2/4390 useless extension candidates. Maximal degree in co-relation 34675. Up to 3859 conditions per place. [2024-06-27 18:48:42,418 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 552 selfloop transitions, 24 changer transitions 0/585 dead transitions. [2024-06-27 18:48:42,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 585 transitions, 11058 flow [2024-06-27 18:48:42,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:48:42,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:48:42,420 INFO L175 Difference]: Start difference. First operand has 477 places, 558 transitions, 9396 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:48:42,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 585 transitions, 11058 flow [2024-06-27 18:48:44,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 585 transitions, 10806 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:44,501 INFO L231 Difference]: Finished difference. Result has 478 places, 560 transitions, 9322 flow [2024-06-27 18:48:44,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9144, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9322, PETRI_PLACES=478, PETRI_TRANSITIONS=560} [2024-06-27 18:48:44,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 437 predicate places. [2024-06-27 18:48:44,502 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 560 transitions, 9322 flow [2024-06-27 18:48:44,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:44,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:44,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:44,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:48:44,503 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 18:48:44,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:44,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1207965578, now seen corresponding path program 10 times [2024-06-27 18:48:44,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:44,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652979486] [2024-06-27 18:48:44,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:44,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652979486] [2024-06-27 18:48:45,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652979486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:45,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:45,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863608502] [2024-06-27 18:48:45,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:45,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:45,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:45,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:45,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:46,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:46,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 560 transitions, 9322 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:46,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:46,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:46,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:47,690 INFO L124 PetriNetUnfolderBase]: 2364/4782 cut-off events. [2024-06-27 18:48:47,690 INFO L125 PetriNetUnfolderBase]: For 370053/370053 co-relation queries the response was YES. [2024-06-27 18:48:47,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34393 conditions, 4782 events. 2364/4782 cut-off events. For 370053/370053 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 36346 event pairs, 579 based on Foata normal form. 2/4390 useless extension candidates. Maximal degree in co-relation 34188. Up to 3913 conditions per place. [2024-06-27 18:48:47,770 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 546 selfloop transitions, 25 changer transitions 0/580 dead transitions. [2024-06-27 18:48:47,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 580 transitions, 10584 flow [2024-06-27 18:48:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:47,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:48:47,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 18:48:47,771 INFO L175 Difference]: Start difference. First operand has 478 places, 560 transitions, 9322 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:48:47,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 580 transitions, 10584 flow [2024-06-27 18:48:49,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 580 transitions, 10437 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-27 18:48:49,802 INFO L231 Difference]: Finished difference. Result has 482 places, 560 transitions, 9231 flow [2024-06-27 18:48:49,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9175, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9231, PETRI_PLACES=482, PETRI_TRANSITIONS=560} [2024-06-27 18:48:49,803 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-27 18:48:49,803 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 560 transitions, 9231 flow [2024-06-27 18:48:49,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:49,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:49,803 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 18:48:49,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:48:49,803 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 18:48:49,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:49,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1207965268, now seen corresponding path program 10 times [2024-06-27 18:48:49,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:49,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081045678] [2024-06-27 18:48:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:49,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:51,270 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 18:48:51,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:51,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081045678] [2024-06-27 18:48:51,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081045678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:51,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:51,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:51,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974162250] [2024-06-27 18:48:51,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:51,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:51,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:51,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:51,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:51,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 560 transitions, 9231 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:51,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:51,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:51,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:52,945 INFO L124 PetriNetUnfolderBase]: 2380/4811 cut-off events. [2024-06-27 18:48:52,945 INFO L125 PetriNetUnfolderBase]: For 364119/364119 co-relation queries the response was YES. [2024-06-27 18:48:53,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34134 conditions, 4811 events. 2380/4811 cut-off events. For 364119/364119 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 36626 event pairs, 579 based on Foata normal form. 1/4413 useless extension candidates. Maximal degree in co-relation 33927. Up to 3958 conditions per place. [2024-06-27 18:48:53,029 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 548 selfloop transitions, 26 changer transitions 0/583 dead transitions. [2024-06-27 18:48:53,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 583 transitions, 10883 flow [2024-06-27 18:48:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:53,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:48:53,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:48:53,030 INFO L175 Difference]: Start difference. First operand has 482 places, 560 transitions, 9231 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:48:53,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 583 transitions, 10883 flow [2024-06-27 18:48:55,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 583 transitions, 10830 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:55,149 INFO L231 Difference]: Finished difference. Result has 484 places, 564 transitions, 9371 flow [2024-06-27 18:48:55,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9178, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9371, PETRI_PLACES=484, PETRI_TRANSITIONS=564} [2024-06-27 18:48:55,150 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 18:48:55,150 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 564 transitions, 9371 flow [2024-06-27 18:48:55,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:55,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:55,150 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 18:48:55,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:48:55,150 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 18:48:55,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:55,151 INFO L85 PathProgramCache]: Analyzing trace with hash 187676364, now seen corresponding path program 11 times [2024-06-27 18:48:55,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:55,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455614654] [2024-06-27 18:48:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:55,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:56,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:56,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455614654] [2024-06-27 18:48:56,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455614654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:56,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:56,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:56,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115728387] [2024-06-27 18:48:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:56,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:56,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:56,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:48:56,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 564 transitions, 9371 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:56,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:56,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:48:56,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:57,671 INFO L124 PetriNetUnfolderBase]: 2397/4847 cut-off events. [2024-06-27 18:48:57,671 INFO L125 PetriNetUnfolderBase]: For 380613/380613 co-relation queries the response was YES. [2024-06-27 18:48:57,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34571 conditions, 4847 events. 2397/4847 cut-off events. For 380613/380613 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36938 event pairs, 481 based on Foata normal form. 2/4443 useless extension candidates. Maximal degree in co-relation 34363. Up to 3815 conditions per place. [2024-06-27 18:48:57,762 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 474 selfloop transitions, 103 changer transitions 0/586 dead transitions. [2024-06-27 18:48:57,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 586 transitions, 10693 flow [2024-06-27 18:48:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:48:57,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:48:57,764 INFO L175 Difference]: Start difference. First operand has 484 places, 564 transitions, 9371 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:48:57,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 586 transitions, 10693 flow [2024-06-27 18:49:00,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 586 transitions, 10622 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 18:49:00,080 INFO L231 Difference]: Finished difference. Result has 488 places, 565 transitions, 9558 flow [2024-06-27 18:49:00,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9300, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9558, PETRI_PLACES=488, PETRI_TRANSITIONS=565} [2024-06-27 18:49:00,081 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-27 18:49:00,081 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 565 transitions, 9558 flow [2024-06-27 18:49:00,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:00,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:00,081 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 18:49:00,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:49:00,081 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 18:49:00,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash 360111060, now seen corresponding path program 11 times [2024-06-27 18:49:00,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:00,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543087399] [2024-06-27 18:49:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:00,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:01,352 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 18:49:01,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:01,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543087399] [2024-06-27 18:49:01,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543087399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:01,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:01,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:01,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476989368] [2024-06-27 18:49:01,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:01,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:01,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:01,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:01,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 565 transitions, 9558 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:01,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:01,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:02,956 INFO L124 PetriNetUnfolderBase]: 2395/4848 cut-off events. [2024-06-27 18:49:02,956 INFO L125 PetriNetUnfolderBase]: For 369450/369450 co-relation queries the response was YES. [2024-06-27 18:49:03,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34638 conditions, 4848 events. 2395/4848 cut-off events. For 369450/369450 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 37013 event pairs, 582 based on Foata normal form. 1/4447 useless extension candidates. Maximal degree in co-relation 34428. Up to 3966 conditions per place. [2024-06-27 18:49:03,039 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 545 selfloop transitions, 32 changer transitions 0/586 dead transitions. [2024-06-27 18:49:03,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 586 transitions, 11102 flow [2024-06-27 18:49:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:49:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:49:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-27 18:49:03,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-27 18:49:03,040 INFO L175 Difference]: Start difference. First operand has 488 places, 565 transitions, 9558 flow. Second operand 12 states and 189 transitions. [2024-06-27 18:49:03,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 586 transitions, 11102 flow [2024-06-27 18:49:05,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 586 transitions, 10856 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:05,364 INFO L231 Difference]: Finished difference. Result has 491 places, 565 transitions, 9381 flow [2024-06-27 18:49:05,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9312, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9381, PETRI_PLACES=491, PETRI_TRANSITIONS=565} [2024-06-27 18:49:05,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-27 18:49:05,365 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 565 transitions, 9381 flow [2024-06-27 18:49:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:05,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:05,365 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 18:49:05,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:49:05,365 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 18:49:05,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1207676968, now seen corresponding path program 12 times [2024-06-27 18:49:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:05,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285050452] [2024-06-27 18:49:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:07,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285050452] [2024-06-27 18:49:07,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285050452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:07,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:07,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:07,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120562335] [2024-06-27 18:49:07,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:07,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:07,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:07,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:07,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:07,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 565 transitions, 9381 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:07,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:07,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:07,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:08,909 INFO L124 PetriNetUnfolderBase]: 2393/4845 cut-off events. [2024-06-27 18:49:08,909 INFO L125 PetriNetUnfolderBase]: For 361557/361557 co-relation queries the response was YES. [2024-06-27 18:49:08,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34067 conditions, 4845 events. 2393/4845 cut-off events. For 361557/361557 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36979 event pairs, 582 based on Foata normal form. 1/4444 useless extension candidates. Maximal degree in co-relation 33856. Up to 3999 conditions per place. [2024-06-27 18:49:08,993 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 553 selfloop transitions, 24 changer transitions 0/586 dead transitions. [2024-06-27 18:49:08,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 586 transitions, 10927 flow [2024-06-27 18:49:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:49:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:49:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 196 transitions. [2024-06-27 18:49:08,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074844074844075 [2024-06-27 18:49:08,994 INFO L175 Difference]: Start difference. First operand has 491 places, 565 transitions, 9381 flow. Second operand 13 states and 196 transitions. [2024-06-27 18:49:08,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 586 transitions, 10927 flow [2024-06-27 18:49:11,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 586 transitions, 10733 flow, removed 48 selfloop flow, removed 12 redundant places. [2024-06-27 18:49:11,247 INFO L231 Difference]: Finished difference. Result has 492 places, 565 transitions, 9240 flow [2024-06-27 18:49:11,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9187, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9240, PETRI_PLACES=492, PETRI_TRANSITIONS=565} [2024-06-27 18:49:11,247 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-27 18:49:11,247 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 565 transitions, 9240 flow [2024-06-27 18:49:11,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:11,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:11,248 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 18:49:11,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:49:11,248 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 18:49:11,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:11,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1562238848, now seen corresponding path program 12 times [2024-06-27 18:49:11,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:11,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042100464] [2024-06-27 18:49:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:11,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042100464] [2024-06-27 18:49:12,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042100464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:12,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:12,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:49:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249767482] [2024-06-27 18:49:12,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:12,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:49:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:49:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:49:12,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:12,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 565 transitions, 9240 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:12,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:12,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:12,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:13,642 INFO L124 PetriNetUnfolderBase]: 2390/4840 cut-off events. [2024-06-27 18:49:13,642 INFO L125 PetriNetUnfolderBase]: For 354880/354880 co-relation queries the response was YES. [2024-06-27 18:49:13,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33488 conditions, 4840 events. 2390/4840 cut-off events. For 354880/354880 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 36873 event pairs, 555 based on Foata normal form. 2/4455 useless extension candidates. Maximal degree in co-relation 33277. Up to 3817 conditions per place. [2024-06-27 18:49:13,725 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 560 selfloop transitions, 26 changer transitions 0/595 dead transitions. [2024-06-27 18:49:13,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 595 transitions, 10578 flow [2024-06-27 18:49:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:49:13,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:49:13,726 INFO L175 Difference]: Start difference. First operand has 492 places, 565 transitions, 9240 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:49:13,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 595 transitions, 10578 flow [2024-06-27 18:49:16,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 595 transitions, 10448 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 18:49:16,153 INFO L231 Difference]: Finished difference. Result has 490 places, 565 transitions, 9166 flow [2024-06-27 18:49:16,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9110, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9166, PETRI_PLACES=490, PETRI_TRANSITIONS=565} [2024-06-27 18:49:16,153 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 449 predicate places. [2024-06-27 18:49:16,153 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 565 transitions, 9166 flow [2024-06-27 18:49:16,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:16,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:16,154 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 18:49:16,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:49:16,154 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 18:49:16,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash 969867614, now seen corresponding path program 13 times [2024-06-27 18:49:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:16,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963941889] [2024-06-27 18:49:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:16,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:17,263 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 18:49:17,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:17,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963941889] [2024-06-27 18:49:17,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963941889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:17,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:17,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295558859] [2024-06-27 18:49:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:17,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:17,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:17,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:17,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:17,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 565 transitions, 9166 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:17,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:17,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:17,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:18,822 INFO L124 PetriNetUnfolderBase]: 2407/4875 cut-off events. [2024-06-27 18:49:18,823 INFO L125 PetriNetUnfolderBase]: For 362876/362876 co-relation queries the response was YES. [2024-06-27 18:49:18,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33892 conditions, 4875 events. 2407/4875 cut-off events. For 362876/362876 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 37266 event pairs, 483 based on Foata normal form. 2/4470 useless extension candidates. Maximal degree in co-relation 33681. Up to 3814 conditions per place. [2024-06-27 18:49:18,905 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 476 selfloop transitions, 100 changer transitions 0/585 dead transitions. [2024-06-27 18:49:18,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 585 transitions, 10474 flow [2024-06-27 18:49:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:49:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:49:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:49:18,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:49:18,906 INFO L175 Difference]: Start difference. First operand has 490 places, 565 transitions, 9166 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:49:18,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 585 transitions, 10474 flow [2024-06-27 18:49:20,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 585 transitions, 10056 flow, removed 31 selfloop flow, removed 17 redundant places. [2024-06-27 18:49:20,981 INFO L231 Difference]: Finished difference. Result has 483 places, 566 transitions, 9004 flow [2024-06-27 18:49:20,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8749, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9004, PETRI_PLACES=483, PETRI_TRANSITIONS=566} [2024-06-27 18:49:20,982 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-27 18:49:20,982 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 566 transitions, 9004 flow [2024-06-27 18:49:20,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:20,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:20,982 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 18:49:20,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:49:20,983 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 18:49:20,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:20,983 INFO L85 PathProgramCache]: Analyzing trace with hash 961584724, now seen corresponding path program 13 times [2024-06-27 18:49:20,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:20,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413858706] [2024-06-27 18:49:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:20,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:22,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:22,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413858706] [2024-06-27 18:49:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413858706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:22,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814920307] [2024-06-27 18:49:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:22,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:22,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:22,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:22,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 566 transitions, 9004 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:22,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:22,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:22,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:24,377 INFO L124 PetriNetUnfolderBase]: 2414/4886 cut-off events. [2024-06-27 18:49:24,378 INFO L125 PetriNetUnfolderBase]: For 353801/353801 co-relation queries the response was YES. [2024-06-27 18:49:24,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32958 conditions, 4886 events. 2414/4886 cut-off events. For 353801/353801 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 37355 event pairs, 483 based on Foata normal form. 1/4475 useless extension candidates. Maximal degree in co-relation 32754. Up to 3855 conditions per place. [2024-06-27 18:49:24,458 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 473 selfloop transitions, 103 changer transitions 0/585 dead transitions. [2024-06-27 18:49:24,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 585 transitions, 10328 flow [2024-06-27 18:49:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:49:24,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:49:24,459 INFO L175 Difference]: Start difference. First operand has 483 places, 566 transitions, 9004 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:49:24,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 585 transitions, 10328 flow [2024-06-27 18:49:26,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 585 transitions, 10069 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:26,524 INFO L231 Difference]: Finished difference. Result has 485 places, 568 transitions, 9026 flow [2024-06-27 18:49:26,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8745, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9026, PETRI_PLACES=485, PETRI_TRANSITIONS=568} [2024-06-27 18:49:26,524 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-27 18:49:26,525 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 568 transitions, 9026 flow [2024-06-27 18:49:26,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:26,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:26,525 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 18:49:26,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:49:26,525 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 18:49:26,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:26,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1876812976, now seen corresponding path program 14 times [2024-06-27 18:49:26,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:26,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198176068] [2024-06-27 18:49:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:26,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:28,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198176068] [2024-06-27 18:49:28,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198176068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:28,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:28,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969647863] [2024-06-27 18:49:28,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:28,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:28,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:28,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:28,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:28,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 568 transitions, 9026 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:28,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:28,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:28,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:30,141 INFO L124 PetriNetUnfolderBase]: 2412/4887 cut-off events. [2024-06-27 18:49:30,141 INFO L125 PetriNetUnfolderBase]: For 341318/341318 co-relation queries the response was YES. [2024-06-27 18:49:30,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32453 conditions, 4887 events. 2412/4887 cut-off events. For 341318/341318 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 37419 event pairs, 584 based on Foata normal form. 1/4481 useless extension candidates. Maximal degree in co-relation 32249. Up to 4043 conditions per place. [2024-06-27 18:49:30,222 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 558 selfloop transitions, 19 changer transitions 0/586 dead transitions. [2024-06-27 18:49:30,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 586 transitions, 10298 flow [2024-06-27 18:49:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:30,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:49:30,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 18:49:30,223 INFO L175 Difference]: Start difference. First operand has 485 places, 568 transitions, 9026 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:49:30,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 586 transitions, 10298 flow [2024-06-27 18:49:32,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 586 transitions, 10030 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 18:49:32,263 INFO L231 Difference]: Finished difference. Result has 490 places, 568 transitions, 8801 flow [2024-06-27 18:49:32,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8758, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8801, PETRI_PLACES=490, PETRI_TRANSITIONS=568} [2024-06-27 18:49:32,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 449 predicate places. [2024-06-27 18:49:32,264 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 568 transitions, 8801 flow [2024-06-27 18:49:32,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:32,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:32,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:32,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:49:32,265 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 18:49:32,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash 961824044, now seen corresponding path program 14 times [2024-06-27 18:49:32,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:32,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471634295] [2024-06-27 18:49:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:32,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:33,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:33,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471634295] [2024-06-27 18:49:33,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471634295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:33,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:33,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:33,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616308359] [2024-06-27 18:49:33,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:33,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:33,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:33,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:33,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 568 transitions, 8801 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:33,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:33,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:33,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:35,046 INFO L124 PetriNetUnfolderBase]: 2429/4922 cut-off events. [2024-06-27 18:49:35,047 INFO L125 PetriNetUnfolderBase]: For 355596/355596 co-relation queries the response was YES. [2024-06-27 18:49:35,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32503 conditions, 4922 events. 2429/4922 cut-off events. For 355596/355596 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37752 event pairs, 486 based on Foata normal form. 2/4511 useless extension candidates. Maximal degree in co-relation 32298. Up to 3873 conditions per place. [2024-06-27 18:49:35,128 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 484 selfloop transitions, 95 changer transitions 0/588 dead transitions. [2024-06-27 18:49:35,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 588 transitions, 10114 flow [2024-06-27 18:49:35,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:49:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:49:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:49:35,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:49:35,129 INFO L175 Difference]: Start difference. First operand has 490 places, 568 transitions, 8801 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:49:35,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 588 transitions, 10114 flow [2024-06-27 18:49:37,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 588 transitions, 10067 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:37,100 INFO L231 Difference]: Finished difference. Result has 490 places, 569 transitions, 8997 flow [2024-06-27 18:49:37,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8754, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8997, PETRI_PLACES=490, PETRI_TRANSITIONS=569} [2024-06-27 18:49:37,101 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 449 predicate places. [2024-06-27 18:49:37,101 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 569 transitions, 8997 flow [2024-06-27 18:49:37,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:37,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:37,101 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 18:49:37,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:49:37,101 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 18:49:37,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 961815364, now seen corresponding path program 15 times [2024-06-27 18:49:37,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:37,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274499325] [2024-06-27 18:49:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:37,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:38,526 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 18:49:38,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:38,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274499325] [2024-06-27 18:49:38,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274499325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:38,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:38,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:38,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996434297] [2024-06-27 18:49:38,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:38,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:38,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:38,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:38,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:38,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:38,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 569 transitions, 8997 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:38,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:38,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:38,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:40,113 INFO L124 PetriNetUnfolderBase]: 2427/4920 cut-off events. [2024-06-27 18:49:40,113 INFO L125 PetriNetUnfolderBase]: For 343665/343665 co-relation queries the response was YES. [2024-06-27 18:49:40,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32569 conditions, 4920 events. 2427/4920 cut-off events. For 343665/343665 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37707 event pairs, 486 based on Foata normal form. 1/4506 useless extension candidates. Maximal degree in co-relation 32363. Up to 3880 conditions per place. [2024-06-27 18:49:40,194 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 475 selfloop transitions, 102 changer transitions 0/586 dead transitions. [2024-06-27 18:49:40,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 586 transitions, 10257 flow [2024-06-27 18:49:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:49:40,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:49:40,195 INFO L175 Difference]: Start difference. First operand has 490 places, 569 transitions, 8997 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:49:40,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 586 transitions, 10257 flow [2024-06-27 18:49:42,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 586 transitions, 9979 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-27 18:49:42,079 INFO L231 Difference]: Finished difference. Result has 493 places, 569 transitions, 8928 flow [2024-06-27 18:49:42,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8928, PETRI_PLACES=493, PETRI_TRANSITIONS=569} [2024-06-27 18:49:42,079 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-27 18:49:42,079 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 569 transitions, 8928 flow [2024-06-27 18:49:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:42,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:42,080 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 18:49:42,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:49:42,080 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 18:49:42,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash 72927060, now seen corresponding path program 16 times [2024-06-27 18:49:42,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:42,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716135220] [2024-06-27 18:49:42,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:42,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:43,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:43,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716135220] [2024-06-27 18:49:43,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716135220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:43,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:43,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:43,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672439164] [2024-06-27 18:49:43,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:43,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:43,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:43,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:43,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 569 transitions, 8928 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:43,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:43,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:43,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:45,104 INFO L124 PetriNetUnfolderBase]: 2425/4917 cut-off events. [2024-06-27 18:49:45,104 INFO L125 PetriNetUnfolderBase]: For 334100/334100 co-relation queries the response was YES. [2024-06-27 18:49:45,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32052 conditions, 4917 events. 2425/4917 cut-off events. For 334100/334100 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37683 event pairs, 486 based on Foata normal form. 1/4503 useless extension candidates. Maximal degree in co-relation 31845. Up to 3534 conditions per place. [2024-06-27 18:49:45,194 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 378 selfloop transitions, 202 changer transitions 0/589 dead transitions. [2024-06-27 18:49:45,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 589 transitions, 10222 flow [2024-06-27 18:49:45,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:49:45,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:49:45,195 INFO L175 Difference]: Start difference. First operand has 493 places, 569 transitions, 8928 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:49:45,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 589 transitions, 10222 flow [2024-06-27 18:49:47,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 589 transitions, 9830 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-27 18:49:47,175 INFO L231 Difference]: Finished difference. Result has 495 places, 571 transitions, 8978 flow [2024-06-27 18:49:47,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8536, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8978, PETRI_PLACES=495, PETRI_TRANSITIONS=571} [2024-06-27 18:49:47,175 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 454 predicate places. [2024-06-27 18:49:47,175 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 571 transitions, 8978 flow [2024-06-27 18:49:47,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:47,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:47,175 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 18:49:47,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:49:47,176 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:47,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 64652850, now seen corresponding path program 17 times [2024-06-27 18:49:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:47,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092705000] [2024-06-27 18:49:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:47,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:49,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:49,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092705000] [2024-06-27 18:49:49,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092705000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:49,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:49,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:49,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203523695] [2024-06-27 18:49:49,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:49,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:49,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:49,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:49,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 571 transitions, 8978 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:49,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:49,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:49,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:51,378 INFO L124 PetriNetUnfolderBase]: 2432/4927 cut-off events. [2024-06-27 18:49:51,378 INFO L125 PetriNetUnfolderBase]: For 338918/338918 co-relation queries the response was YES. [2024-06-27 18:49:51,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32172 conditions, 4927 events. 2432/4927 cut-off events. For 338918/338918 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37731 event pairs, 486 based on Foata normal form. 1/4511 useless extension candidates. Maximal degree in co-relation 31963. Up to 3544 conditions per place. [2024-06-27 18:49:51,454 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 377 selfloop transitions, 205 changer transitions 0/591 dead transitions. [2024-06-27 18:49:51,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 591 transitions, 10322 flow [2024-06-27 18:49:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:49:51,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:49:51,455 INFO L175 Difference]: Start difference. First operand has 495 places, 571 transitions, 8978 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:49:51,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 591 transitions, 10322 flow [2024-06-27 18:49:53,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 591 transitions, 9910 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:53,397 INFO L231 Difference]: Finished difference. Result has 497 places, 573 transitions, 9047 flow [2024-06-27 18:49:53,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8566, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9047, PETRI_PLACES=497, PETRI_TRANSITIONS=573} [2024-06-27 18:49:53,398 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 18:49:53,398 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 573 transitions, 9047 flow [2024-06-27 18:49:53,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:53,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:53,398 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 18:49:53,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:49:53,399 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:53,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash -58869680, now seen corresponding path program 18 times [2024-06-27 18:49:53,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:53,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106926806] [2024-06-27 18:49:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:53,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:54,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106926806] [2024-06-27 18:49:54,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106926806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:54,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:54,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787299596] [2024-06-27 18:49:54,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:54,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:54,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:54,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:54,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 573 transitions, 9047 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:54,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:54,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:54,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:56,323 INFO L124 PetriNetUnfolderBase]: 2430/4924 cut-off events. [2024-06-27 18:49:56,324 INFO L125 PetriNetUnfolderBase]: For 333731/333731 co-relation queries the response was YES. [2024-06-27 18:49:56,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32046 conditions, 4924 events. 2430/4924 cut-off events. For 333731/333731 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37692 event pairs, 485 based on Foata normal form. 1/4509 useless extension candidates. Maximal degree in co-relation 31836. Up to 3929 conditions per place. [2024-06-27 18:49:56,398 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 481 selfloop transitions, 101 changer transitions 0/591 dead transitions. [2024-06-27 18:49:56,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 591 transitions, 10317 flow [2024-06-27 18:49:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:49:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:49:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2024-06-27 18:49:56,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42203742203742206 [2024-06-27 18:49:56,399 INFO L175 Difference]: Start difference. First operand has 497 places, 573 transitions, 9047 flow. Second operand 13 states and 203 transitions. [2024-06-27 18:49:56,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 591 transitions, 10317 flow [2024-06-27 18:49:58,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 591 transitions, 9828 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 18:49:58,270 INFO L231 Difference]: Finished difference. Result has 503 places, 574 transitions, 8783 flow [2024-06-27 18:49:58,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8558, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8783, PETRI_PLACES=503, PETRI_TRANSITIONS=574} [2024-06-27 18:49:58,271 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-27 18:49:58,271 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 574 transitions, 8783 flow [2024-06-27 18:49:58,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:58,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:58,271 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 18:49:58,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:49:58,271 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:58,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:58,272 INFO L85 PathProgramCache]: Analyzing trace with hash 64892170, now seen corresponding path program 15 times [2024-06-27 18:49:58,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:58,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653751759] [2024-06-27 18:49:58,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:58,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:59,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:59,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653751759] [2024-06-27 18:49:59,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653751759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:59,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:59,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:49:59,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196761076] [2024-06-27 18:49:59,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:59,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:49:59,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:49:59,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:49:59,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:49:59,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 574 transitions, 8783 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:59,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:59,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:49:59,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:00,593 INFO L124 PetriNetUnfolderBase]: 2427/4919 cut-off events. [2024-06-27 18:50:00,593 INFO L125 PetriNetUnfolderBase]: For 325273/325273 co-relation queries the response was YES. [2024-06-27 18:50:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31269 conditions, 4919 events. 2427/4919 cut-off events. For 325273/325273 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37720 event pairs, 485 based on Foata normal form. 2/4506 useless extension candidates. Maximal degree in co-relation 31057. Up to 3531 conditions per place. [2024-06-27 18:50:00,677 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 407 selfloop transitions, 178 changer transitions 0/594 dead transitions. [2024-06-27 18:50:00,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 594 transitions, 10073 flow [2024-06-27 18:50:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:50:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:50:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:50:00,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:50:00,678 INFO L175 Difference]: Start difference. First operand has 503 places, 574 transitions, 8783 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:50:00,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 594 transitions, 10073 flow [2024-06-27 18:50:02,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 594 transitions, 9757 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-27 18:50:02,374 INFO L231 Difference]: Finished difference. Result has 501 places, 574 transitions, 8827 flow [2024-06-27 18:50:02,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8467, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8827, PETRI_PLACES=501, PETRI_TRANSITIONS=574} [2024-06-27 18:50:02,375 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-27 18:50:02,375 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 574 transitions, 8827 flow [2024-06-27 18:50:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:02,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:02,376 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 18:50:02,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:50:02,376 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:02,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:02,377 INFO L85 PathProgramCache]: Analyzing trace with hash -148123982, now seen corresponding path program 19 times [2024-06-27 18:50:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:02,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784312995] [2024-06-27 18:50:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:03,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784312995] [2024-06-27 18:50:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784312995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:03,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100815459] [2024-06-27 18:50:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:03,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:03,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:03,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 574 transitions, 8827 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:03,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:03,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:03,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:05,228 INFO L124 PetriNetUnfolderBase]: 2425/4916 cut-off events. [2024-06-27 18:50:05,229 INFO L125 PetriNetUnfolderBase]: For 308107/308107 co-relation queries the response was YES. [2024-06-27 18:50:05,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31127 conditions, 4916 events. 2425/4916 cut-off events. For 308107/308107 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37669 event pairs, 485 based on Foata normal form. 1/4501 useless extension candidates. Maximal degree in co-relation 30914. Up to 3533 conditions per place. [2024-06-27 18:50:05,311 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 380 selfloop transitions, 203 changer transitions 0/592 dead transitions. [2024-06-27 18:50:05,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 592 transitions, 10111 flow [2024-06-27 18:50:05,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:05,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:05,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:50:05,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:50:05,312 INFO L175 Difference]: Start difference. First operand has 501 places, 574 transitions, 8827 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:50:05,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 592 transitions, 10111 flow [2024-06-27 18:50:07,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 592 transitions, 9703 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:07,043 INFO L231 Difference]: Finished difference. Result has 503 places, 574 transitions, 8830 flow [2024-06-27 18:50:07,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8419, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8830, PETRI_PLACES=503, PETRI_TRANSITIONS=574} [2024-06-27 18:50:07,044 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-27 18:50:07,044 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 574 transitions, 8830 flow [2024-06-27 18:50:07,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:07,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:07,044 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 18:50:07,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:50:07,045 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:07,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash -58861000, now seen corresponding path program 16 times [2024-06-27 18:50:07,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:07,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689152798] [2024-06-27 18:50:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:07,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:07,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:07,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689152798] [2024-06-27 18:50:07,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689152798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:07,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:07,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:50:07,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853674714] [2024-06-27 18:50:07,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:07,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:50:07,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:50:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:50:08,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:08,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 574 transitions, 8830 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:08,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:08,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:08,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:09,444 INFO L124 PetriNetUnfolderBase]: 2409/4888 cut-off events. [2024-06-27 18:50:09,444 INFO L125 PetriNetUnfolderBase]: For 301344/301344 co-relation queries the response was YES. [2024-06-27 18:50:09,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29230 conditions, 4888 events. 2409/4888 cut-off events. For 301344/301344 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37472 event pairs, 475 based on Foata normal form. 12/4488 useless extension candidates. Maximal degree in co-relation 29016. Up to 3729 conditions per place. [2024-06-27 18:50:09,527 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 500 selfloop transitions, 87 changer transitions 0/596 dead transitions. [2024-06-27 18:50:09,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 596 transitions, 10184 flow [2024-06-27 18:50:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:50:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:50:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:50:09,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:50:09,528 INFO L175 Difference]: Start difference. First operand has 503 places, 574 transitions, 8830 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:50:09,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 596 transitions, 10184 flow [2024-06-27 18:50:10,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 596 transitions, 9562 flow, removed 18 selfloop flow, removed 13 redundant places. [2024-06-27 18:50:10,884 INFO L231 Difference]: Finished difference. Result has 500 places, 574 transitions, 8389 flow [2024-06-27 18:50:10,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8389, PETRI_PLACES=500, PETRI_TRANSITIONS=574} [2024-06-27 18:50:10,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-27 18:50:10,885 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 574 transitions, 8389 flow [2024-06-27 18:50:10,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:10,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:10,885 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 18:50:10,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:50:10,885 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:10,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1838358772, now seen corresponding path program 16 times [2024-06-27 18:50:10,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:10,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216402887] [2024-06-27 18:50:10,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:10,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:12,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216402887] [2024-06-27 18:50:12,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216402887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:12,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:12,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:50:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992487831] [2024-06-27 18:50:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:12,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:50:12,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:50:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:50:12,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:12,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 574 transitions, 8389 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:12,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:12,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:12,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:13,673 INFO L124 PetriNetUnfolderBase]: 2468/5029 cut-off events. [2024-06-27 18:50:13,673 INFO L125 PetriNetUnfolderBase]: For 209417/209417 co-relation queries the response was YES. [2024-06-27 18:50:13,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29085 conditions, 5029 events. 2468/5029 cut-off events. For 209417/209417 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39004 event pairs, 493 based on Foata normal form. 2/4611 useless extension candidates. Maximal degree in co-relation 28871. Up to 4045 conditions per place. [2024-06-27 18:50:13,763 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 561 selfloop transitions, 43 changer transitions 0/613 dead transitions. [2024-06-27 18:50:13,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 613 transitions, 9918 flow [2024-06-27 18:50:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:50:13,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:50:13,764 INFO L175 Difference]: Start difference. First operand has 500 places, 574 transitions, 8389 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:50:13,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 613 transitions, 9918 flow [2024-06-27 18:50:15,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 613 transitions, 9715 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:50:15,508 INFO L231 Difference]: Finished difference. Result has 504 places, 583 transitions, 8484 flow [2024-06-27 18:50:15,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8192, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8484, PETRI_PLACES=504, PETRI_TRANSITIONS=583} [2024-06-27 18:50:15,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 463 predicate places. [2024-06-27 18:50:15,509 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 583 transitions, 8484 flow [2024-06-27 18:50:15,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:15,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:15,509 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 18:50:15,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:50:15,509 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:15,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:15,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1973915618, now seen corresponding path program 17 times [2024-06-27 18:50:15,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:15,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133433866] [2024-06-27 18:50:15,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:15,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:16,314 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 18:50:16,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:16,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133433866] [2024-06-27 18:50:16,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133433866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:16,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:16,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:50:16,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802281325] [2024-06-27 18:50:16,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:16,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:50:16,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:16,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:50:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:50:16,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:16,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 583 transitions, 8484 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:16,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:16,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:16,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:18,037 INFO L124 PetriNetUnfolderBase]: 2513/5136 cut-off events. [2024-06-27 18:50:18,037 INFO L125 PetriNetUnfolderBase]: For 195047/195047 co-relation queries the response was YES. [2024-06-27 18:50:18,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29502 conditions, 5136 events. 2513/5136 cut-off events. For 195047/195047 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 40163 event pairs, 495 based on Foata normal form. 2/4711 useless extension candidates. Maximal degree in co-relation 29285. Up to 4100 conditions per place. [2024-06-27 18:50:18,117 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 564 selfloop transitions, 45 changer transitions 0/618 dead transitions. [2024-06-27 18:50:18,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 618 transitions, 10008 flow [2024-06-27 18:50:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:50:18,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 18:50:18,118 INFO L175 Difference]: Start difference. First operand has 504 places, 583 transitions, 8484 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:50:18,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 618 transitions, 10008 flow [2024-06-27 18:50:19,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 618 transitions, 9851 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:19,674 INFO L231 Difference]: Finished difference. Result has 512 places, 590 transitions, 8620 flow [2024-06-27 18:50:19,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8380, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8620, PETRI_PLACES=512, PETRI_TRANSITIONS=590} [2024-06-27 18:50:19,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-27 18:50:19,674 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 590 transitions, 8620 flow [2024-06-27 18:50:19,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:19,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:19,675 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 18:50:19,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:50:19,675 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:19,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1688415452, now seen corresponding path program 20 times [2024-06-27 18:50:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:19,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615674025] [2024-06-27 18:50:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:20,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:20,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615674025] [2024-06-27 18:50:20,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615674025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:20,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:20,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:50:20,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433681500] [2024-06-27 18:50:20,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:20,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:50:20,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:20,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:50:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:50:20,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:20,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 590 transitions, 8620 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:20,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:20,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:20,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:22,420 INFO L124 PetriNetUnfolderBase]: 2511/5157 cut-off events. [2024-06-27 18:50:22,420 INFO L125 PetriNetUnfolderBase]: For 169872/169872 co-relation queries the response was YES. [2024-06-27 18:50:22,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28927 conditions, 5157 events. 2511/5157 cut-off events. For 169872/169872 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 40469 event pairs, 532 based on Foata normal form. 1/4722 useless extension candidates. Maximal degree in co-relation 28707. Up to 4114 conditions per place. [2024-06-27 18:50:22,498 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 516 selfloop transitions, 88 changer transitions 0/613 dead transitions. [2024-06-27 18:50:22,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 613 transitions, 10250 flow [2024-06-27 18:50:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:50:22,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:50:22,499 INFO L175 Difference]: Start difference. First operand has 512 places, 590 transitions, 8620 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:50:22,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 613 transitions, 10250 flow [2024-06-27 18:50:23,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 613 transitions, 10026 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-06-27 18:50:23,951 INFO L231 Difference]: Finished difference. Result has 514 places, 591 transitions, 8629 flow [2024-06-27 18:50:23,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8396, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8629, PETRI_PLACES=514, PETRI_TRANSITIONS=591} [2024-06-27 18:50:23,951 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-27 18:50:23,951 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 591 transitions, 8629 flow [2024-06-27 18:50:23,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:23,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:23,951 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 18:50:23,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:50:23,952 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:23,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1688423822, now seen corresponding path program 21 times [2024-06-27 18:50:23,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:23,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866769365] [2024-06-27 18:50:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:25,643 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 18:50:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:25,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866769365] [2024-06-27 18:50:25,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866769365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:25,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:25,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:25,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387053180] [2024-06-27 18:50:25,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:25,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:25,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:25,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:25,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:25,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 591 transitions, 8629 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:25,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:25,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:25,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:27,572 INFO L124 PetriNetUnfolderBase]: 2509/5154 cut-off events. [2024-06-27 18:50:27,572 INFO L125 PetriNetUnfolderBase]: For 154774/154774 co-relation queries the response was YES. [2024-06-27 18:50:27,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28450 conditions, 5154 events. 2509/5154 cut-off events. For 154774/154774 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 40459 event pairs, 532 based on Foata normal form. 1/4719 useless extension candidates. Maximal degree in co-relation 28228. Up to 4136 conditions per place. [2024-06-27 18:50:27,654 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 527 selfloop transitions, 78 changer transitions 0/614 dead transitions. [2024-06-27 18:50:27,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 614 transitions, 9976 flow [2024-06-27 18:50:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:50:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:50:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-27 18:50:27,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-06-27 18:50:27,655 INFO L175 Difference]: Start difference. First operand has 514 places, 591 transitions, 8629 flow. Second operand 12 states and 194 transitions. [2024-06-27 18:50:27,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 614 transitions, 9976 flow [2024-06-27 18:50:29,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 614 transitions, 9657 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 18:50:29,142 INFO L231 Difference]: Finished difference. Result has 516 places, 591 transitions, 8474 flow [2024-06-27 18:50:29,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8310, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8474, PETRI_PLACES=516, PETRI_TRANSITIONS=591} [2024-06-27 18:50:29,143 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-27 18:50:29,143 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 591 transitions, 8474 flow [2024-06-27 18:50:29,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:29,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:29,143 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 18:50:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:50:29,143 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:29,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:29,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1580429687, now seen corresponding path program 1 times [2024-06-27 18:50:29,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:29,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441862228] [2024-06-27 18:50:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:30,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441862228] [2024-06-27 18:50:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441862228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:30,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:30,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:30,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375930803] [2024-06-27 18:50:30,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:30,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:30,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:30,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:30,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:30,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 591 transitions, 8474 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:30,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:30,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:30,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:32,107 INFO L124 PetriNetUnfolderBase]: 2555/5248 cut-off events. [2024-06-27 18:50:32,107 INFO L125 PetriNetUnfolderBase]: For 166986/166986 co-relation queries the response was YES. [2024-06-27 18:50:32,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28788 conditions, 5248 events. 2555/5248 cut-off events. For 166986/166986 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 41385 event pairs, 513 based on Foata normal form. 2/4808 useless extension candidates. Maximal degree in co-relation 28565. Up to 4127 conditions per place. [2024-06-27 18:50:32,186 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 553 selfloop transitions, 63 changer transitions 0/625 dead transitions. [2024-06-27 18:50:32,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 625 transitions, 9918 flow [2024-06-27 18:50:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:50:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:50:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 18:50:32,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:50:32,187 INFO L175 Difference]: Start difference. First operand has 516 places, 591 transitions, 8474 flow. Second operand 12 states and 198 transitions. [2024-06-27 18:50:32,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 625 transitions, 9918 flow [2024-06-27 18:50:33,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 625 transitions, 9711 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 18:50:33,681 INFO L231 Difference]: Finished difference. Result has 519 places, 598 transitions, 8520 flow [2024-06-27 18:50:33,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8267, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8520, PETRI_PLACES=519, PETRI_TRANSITIONS=598} [2024-06-27 18:50:33,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 18:50:33,681 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 598 transitions, 8520 flow [2024-06-27 18:50:33,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:33,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:33,682 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 18:50:33,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:50:33,682 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:33,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:33,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1574715767, now seen corresponding path program 2 times [2024-06-27 18:50:33,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:33,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804430122] [2024-06-27 18:50:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:33,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:34,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:34,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804430122] [2024-06-27 18:50:34,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804430122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:34,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:34,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874542333] [2024-06-27 18:50:34,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:34,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:34,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:34,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 598 transitions, 8520 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:34,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:34,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:34,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:36,834 INFO L124 PetriNetUnfolderBase]: 2626/5448 cut-off events. [2024-06-27 18:50:36,834 INFO L125 PetriNetUnfolderBase]: For 256946/256946 co-relation queries the response was YES. [2024-06-27 18:50:36,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30104 conditions, 5448 events. 2626/5448 cut-off events. For 256946/256946 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 43645 event pairs, 614 based on Foata normal form. 10/5005 useless extension candidates. Maximal degree in co-relation 29878. Up to 4215 conditions per place. [2024-06-27 18:50:36,917 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 552 selfloop transitions, 70 changer transitions 0/631 dead transitions. [2024-06-27 18:50:36,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 631 transitions, 10036 flow [2024-06-27 18:50:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:50:36,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:50:36,918 INFO L175 Difference]: Start difference. First operand has 519 places, 598 transitions, 8520 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:50:36,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 631 transitions, 10036 flow [2024-06-27 18:50:38,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 631 transitions, 9908 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:50:38,604 INFO L231 Difference]: Finished difference. Result has 522 places, 598 transitions, 8536 flow [2024-06-27 18:50:38,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8392, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8536, PETRI_PLACES=522, PETRI_TRANSITIONS=598} [2024-06-27 18:50:38,605 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 481 predicate places. [2024-06-27 18:50:38,605 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 598 transitions, 8536 flow [2024-06-27 18:50:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:38,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:38,605 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 18:50:38,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:50:38,605 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:38,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1574923157, now seen corresponding path program 3 times [2024-06-27 18:50:38,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:38,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066288384] [2024-06-27 18:50:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:38,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:39,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:39,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066288384] [2024-06-27 18:50:39,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066288384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:39,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:39,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:39,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46378597] [2024-06-27 18:50:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:39,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:39,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:40,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:40,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 598 transitions, 8536 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:40,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:40,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:40,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:41,697 INFO L124 PetriNetUnfolderBase]: 2680/5582 cut-off events. [2024-06-27 18:50:41,697 INFO L125 PetriNetUnfolderBase]: For 238736/238736 co-relation queries the response was YES. [2024-06-27 18:50:41,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30621 conditions, 5582 events. 2680/5582 cut-off events. For 238736/238736 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 44943 event pairs, 620 based on Foata normal form. 8/5130 useless extension candidates. Maximal degree in co-relation 30393. Up to 4180 conditions per place. [2024-06-27 18:50:41,793 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 559 selfloop transitions, 70 changer transitions 0/638 dead transitions. [2024-06-27 18:50:41,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 638 transitions, 10128 flow [2024-06-27 18:50:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:50:41,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:50:41,794 INFO L175 Difference]: Start difference. First operand has 522 places, 598 transitions, 8536 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:50:41,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 638 transitions, 10128 flow [2024-06-27 18:50:43,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 638 transitions, 9990 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:43,347 INFO L231 Difference]: Finished difference. Result has 524 places, 598 transitions, 8541 flow [2024-06-27 18:50:43,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8398, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8541, PETRI_PLACES=524, PETRI_TRANSITIONS=598} [2024-06-27 18:50:43,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-27 18:50:43,347 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 598 transitions, 8541 flow [2024-06-27 18:50:43,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:43,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:43,348 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 18:50:43,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:50:43,348 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:43,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash -59600311, now seen corresponding path program 4 times [2024-06-27 18:50:43,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:43,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021974314] [2024-06-27 18:50:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:43,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:44,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021974314] [2024-06-27 18:50:44,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021974314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:44,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:44,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:44,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705511338] [2024-06-27 18:50:44,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:44,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:44,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:44,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:44,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:44,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 598 transitions, 8541 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:44,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:44,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:44,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:46,320 INFO L124 PetriNetUnfolderBase]: 2734/5651 cut-off events. [2024-06-27 18:50:46,320 INFO L125 PetriNetUnfolderBase]: For 243567/243567 co-relation queries the response was YES. [2024-06-27 18:50:46,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31183 conditions, 5651 events. 2734/5651 cut-off events. For 243567/243567 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 45592 event pairs, 641 based on Foata normal form. 8/5247 useless extension candidates. Maximal degree in co-relation 30954. Up to 4408 conditions per place. [2024-06-27 18:50:46,428 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 580 selfloop transitions, 50 changer transitions 0/639 dead transitions. [2024-06-27 18:50:46,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 639 transitions, 10043 flow [2024-06-27 18:50:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:46,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:50:46,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:50:46,429 INFO L175 Difference]: Start difference. First operand has 524 places, 598 transitions, 8541 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:50:46,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 639 transitions, 10043 flow [2024-06-27 18:50:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 639 transitions, 9904 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:48,232 INFO L231 Difference]: Finished difference. Result has 526 places, 598 transitions, 8505 flow [2024-06-27 18:50:48,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8402, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8505, PETRI_PLACES=526, PETRI_TRANSITIONS=598} [2024-06-27 18:50:48,232 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-27 18:50:48,232 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 598 transitions, 8505 flow [2024-06-27 18:50:48,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:48,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:48,233 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 18:50:48,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:50:48,233 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:48,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:48,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1389087313, now seen corresponding path program 5 times [2024-06-27 18:50:48,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:48,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684115659] [2024-06-27 18:50:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:48,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:49,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684115659] [2024-06-27 18:50:49,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684115659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:49,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:49,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074551635] [2024-06-27 18:50:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:49,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:49,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:49,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 598 transitions, 8505 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:49,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:49,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:49,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:51,130 INFO L124 PetriNetUnfolderBase]: 2751/5717 cut-off events. [2024-06-27 18:50:51,130 INFO L125 PetriNetUnfolderBase]: For 184912/184912 co-relation queries the response was YES. [2024-06-27 18:50:51,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31500 conditions, 5717 events. 2751/5717 cut-off events. For 184912/184912 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 46432 event pairs, 712 based on Foata normal form. 2/5259 useless extension candidates. Maximal degree in co-relation 31270. Up to 4553 conditions per place. [2024-06-27 18:50:51,232 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 542 selfloop transitions, 75 changer transitions 0/626 dead transitions. [2024-06-27 18:50:51,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 626 transitions, 9927 flow [2024-06-27 18:50:51,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:51,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:50:51,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:50:51,233 INFO L175 Difference]: Start difference. First operand has 526 places, 598 transitions, 8505 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:50:51,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 626 transitions, 9927 flow [2024-06-27 18:50:52,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 626 transitions, 9828 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:52,986 INFO L231 Difference]: Finished difference. Result has 528 places, 599 transitions, 8596 flow [2024-06-27 18:50:52,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8406, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8596, PETRI_PLACES=528, PETRI_TRANSITIONS=599} [2024-06-27 18:50:52,986 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 487 predicate places. [2024-06-27 18:50:52,986 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 599 transitions, 8596 flow [2024-06-27 18:50:52,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:52,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:52,987 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 18:50:52,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:50:52,987 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:52,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1396237153, now seen corresponding path program 6 times [2024-06-27 18:50:52,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:52,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378002047] [2024-06-27 18:50:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:52,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:54,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378002047] [2024-06-27 18:50:54,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378002047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:54,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:54,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409865729] [2024-06-27 18:50:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:54,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:54,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:54,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:54,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:54,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:54,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 599 transitions, 8596 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:54,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:54,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:54,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:55,965 INFO L124 PetriNetUnfolderBase]: 2768/5756 cut-off events. [2024-06-27 18:50:55,965 INFO L125 PetriNetUnfolderBase]: For 190126/190126 co-relation queries the response was YES. [2024-06-27 18:50:56,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32030 conditions, 5756 events. 2768/5756 cut-off events. For 190126/190126 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 46817 event pairs, 720 based on Foata normal form. 2/5296 useless extension candidates. Maximal degree in co-relation 31799. Up to 4530 conditions per place. [2024-06-27 18:50:56,079 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 528 selfloop transitions, 90 changer transitions 0/627 dead transitions. [2024-06-27 18:50:56,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 627 transitions, 10022 flow [2024-06-27 18:50:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:50:56,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:50:56,080 INFO L175 Difference]: Start difference. First operand has 528 places, 599 transitions, 8596 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:50:56,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 627 transitions, 10022 flow [2024-06-27 18:50:57,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 627 transitions, 9846 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:57,913 INFO L231 Difference]: Finished difference. Result has 530 places, 600 transitions, 8642 flow [2024-06-27 18:50:57,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8420, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8642, PETRI_PLACES=530, PETRI_TRANSITIONS=600} [2024-06-27 18:50:57,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-27 18:50:57,913 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 600 transitions, 8642 flow [2024-06-27 18:50:57,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:57,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:57,914 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 18:50:57,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:50:57,914 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:57,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:57,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1746154257, now seen corresponding path program 7 times [2024-06-27 18:50:57,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:57,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093682103] [2024-06-27 18:50:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:58,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093682103] [2024-06-27 18:50:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093682103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:58,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:58,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644020067] [2024-06-27 18:50:58,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:58,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:58,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:59,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:50:59,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 600 transitions, 8642 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:59,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:59,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:50:59,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:00,903 INFO L124 PetriNetUnfolderBase]: 2785/5786 cut-off events. [2024-06-27 18:51:00,904 INFO L125 PetriNetUnfolderBase]: For 194078/194078 co-relation queries the response was YES. [2024-06-27 18:51:00,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32332 conditions, 5786 events. 2785/5786 cut-off events. For 194078/194078 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 47086 event pairs, 726 based on Foata normal form. 2/5324 useless extension candidates. Maximal degree in co-relation 32100. Up to 4561 conditions per place. [2024-06-27 18:51:01,005 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 530 selfloop transitions, 98 changer transitions 0/637 dead transitions. [2024-06-27 18:51:01,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 637 transitions, 10202 flow [2024-06-27 18:51:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:51:01,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:51:01,006 INFO L175 Difference]: Start difference. First operand has 530 places, 600 transitions, 8642 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:51:01,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 637 transitions, 10202 flow [2024-06-27 18:51:02,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 637 transitions, 9994 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:02,857 INFO L231 Difference]: Finished difference. Result has 533 places, 605 transitions, 8780 flow [2024-06-27 18:51:02,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8434, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8780, PETRI_PLACES=533, PETRI_TRANSITIONS=605} [2024-06-27 18:51:02,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 492 predicate places. [2024-06-27 18:51:02,858 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 605 transitions, 8780 flow [2024-06-27 18:51:02,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:02,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:02,858 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 18:51:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:51:02,858 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:02,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1396444543, now seen corresponding path program 8 times [2024-06-27 18:51:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:02,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628907403] [2024-06-27 18:51:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:03,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:03,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628907403] [2024-06-27 18:51:03,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628907403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:03,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:03,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:51:03,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579066059] [2024-06-27 18:51:03,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:03,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:51:03,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:03,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:51:03,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:51:03,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:03,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 605 transitions, 8780 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:03,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:03,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:03,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:05,905 INFO L124 PetriNetUnfolderBase]: 2866/6003 cut-off events. [2024-06-27 18:51:05,905 INFO L125 PetriNetUnfolderBase]: For 289150/289150 co-relation queries the response was YES. [2024-06-27 18:51:05,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34576 conditions, 6003 events. 2866/6003 cut-off events. For 289150/289150 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 49525 event pairs, 783 based on Foata normal form. 2/5534 useless extension candidates. Maximal degree in co-relation 34342. Up to 4491 conditions per place. [2024-06-27 18:51:06,012 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 540 selfloop transitions, 92 changer transitions 0/641 dead transitions. [2024-06-27 18:51:06,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 641 transitions, 10614 flow [2024-06-27 18:51:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:51:06,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:51:06,013 INFO L175 Difference]: Start difference. First operand has 533 places, 605 transitions, 8780 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:51:06,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 641 transitions, 10614 flow [2024-06-27 18:51:08,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 641 transitions, 10431 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:51:08,568 INFO L231 Difference]: Finished difference. Result has 538 places, 606 transitions, 8825 flow [2024-06-27 18:51:08,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8597, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8825, PETRI_PLACES=538, PETRI_TRANSITIONS=606} [2024-06-27 18:51:08,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-27 18:51:08,569 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 606 transitions, 8825 flow [2024-06-27 18:51:08,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:08,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:08,569 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 18:51:08,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:51:08,569 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:08,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:08,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1595890483, now seen corresponding path program 9 times [2024-06-27 18:51:08,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:08,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289726747] [2024-06-27 18:51:08,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:08,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289726747] [2024-06-27 18:51:09,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289726747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:09,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:09,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:51:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733793139] [2024-06-27 18:51:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:09,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:51:09,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:51:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:51:09,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:09,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 606 transitions, 8825 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:09,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:09,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:09,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:11,667 INFO L124 PetriNetUnfolderBase]: 2920/6093 cut-off events. [2024-06-27 18:51:11,667 INFO L125 PetriNetUnfolderBase]: For 357278/357278 co-relation queries the response was YES. [2024-06-27 18:51:11,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35078 conditions, 6093 events. 2920/6093 cut-off events. For 357278/357278 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 50393 event pairs, 721 based on Foata normal form. 8/5629 useless extension candidates. Maximal degree in co-relation 34842. Up to 4501 conditions per place. [2024-06-27 18:51:11,774 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 538 selfloop transitions, 98 changer transitions 0/645 dead transitions. [2024-06-27 18:51:11,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 645 transitions, 10349 flow [2024-06-27 18:51:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:51:11,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 18:51:11,775 INFO L175 Difference]: Start difference. First operand has 538 places, 606 transitions, 8825 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:51:11,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 645 transitions, 10349 flow [2024-06-27 18:51:14,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 645 transitions, 10131 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:14,591 INFO L231 Difference]: Finished difference. Result has 540 places, 606 transitions, 8811 flow [2024-06-27 18:51:14,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8607, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8811, PETRI_PLACES=540, PETRI_TRANSITIONS=606} [2024-06-27 18:51:14,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-27 18:51:14,592 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 606 transitions, 8811 flow [2024-06-27 18:51:14,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:14,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:14,593 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 18:51:14,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:51:14,593 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:14,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1396229217, now seen corresponding path program 1 times [2024-06-27 18:51:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:14,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235393464] [2024-06-27 18:51:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:17,637 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 18:51:17,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:17,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235393464] [2024-06-27 18:51:17,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235393464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:17,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:17,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:17,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844008903] [2024-06-27 18:51:17,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:17,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:17,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:17,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:17,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 606 transitions, 8811 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:17,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:17,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:17,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:20,389 INFO L124 PetriNetUnfolderBase]: 2946/6173 cut-off events. [2024-06-27 18:51:20,389 INFO L125 PetriNetUnfolderBase]: For 274301/274301 co-relation queries the response was YES. [2024-06-27 18:51:20,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33985 conditions, 6173 events. 2946/6173 cut-off events. For 274301/274301 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 51241 event pairs, 810 based on Foata normal form. 8/5690 useless extension candidates. Maximal degree in co-relation 33748. Up to 4812 conditions per place. [2024-06-27 18:51:20,493 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 544 selfloop transitions, 96 changer transitions 0/649 dead transitions. [2024-06-27 18:51:20,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 649 transitions, 10525 flow [2024-06-27 18:51:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 18:51:20,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 18:51:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 238 transitions. [2024-06-27 18:51:20,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42882882882882883 [2024-06-27 18:51:20,494 INFO L175 Difference]: Start difference. First operand has 540 places, 606 transitions, 8811 flow. Second operand 15 states and 238 transitions. [2024-06-27 18:51:20,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 649 transitions, 10525 flow [2024-06-27 18:51:22,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 649 transitions, 10325 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:22,583 INFO L231 Difference]: Finished difference. Result has 551 places, 620 transitions, 9130 flow [2024-06-27 18:51:22,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8621, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9130, PETRI_PLACES=551, PETRI_TRANSITIONS=620} [2024-06-27 18:51:22,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 510 predicate places. [2024-06-27 18:51:22,583 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 620 transitions, 9130 flow [2024-06-27 18:51:22,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:22,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:22,585 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 18:51:22,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:51:22,585 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:22,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1388819907, now seen corresponding path program 2 times [2024-06-27 18:51:22,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:22,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456770725] [2024-06-27 18:51:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:22,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:24,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:24,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456770725] [2024-06-27 18:51:24,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456770725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:24,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:24,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748802889] [2024-06-27 18:51:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:24,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:24,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:24,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:24,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:24,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 620 transitions, 9130 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:24,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:24,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:24,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:26,217 INFO L124 PetriNetUnfolderBase]: 3000/6318 cut-off events. [2024-06-27 18:51:26,217 INFO L125 PetriNetUnfolderBase]: For 283257/283257 co-relation queries the response was YES. [2024-06-27 18:51:26,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35274 conditions, 6318 events. 3000/6318 cut-off events. For 283257/283257 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 52975 event pairs, 860 based on Foata normal form. 8/5830 useless extension candidates. Maximal degree in co-relation 35031. Up to 4854 conditions per place. [2024-06-27 18:51:26,330 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 548 selfloop transitions, 92 changer transitions 0/649 dead transitions. [2024-06-27 18:51:26,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 649 transitions, 10628 flow [2024-06-27 18:51:26,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:26,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:51:26,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:51:26,331 INFO L175 Difference]: Start difference. First operand has 551 places, 620 transitions, 9130 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:51:26,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 649 transitions, 10628 flow [2024-06-27 18:51:28,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 649 transitions, 10472 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:51:28,924 INFO L231 Difference]: Finished difference. Result has 556 places, 620 transitions, 9168 flow [2024-06-27 18:51:28,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8974, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9168, PETRI_PLACES=556, PETRI_TRANSITIONS=620} [2024-06-27 18:51:28,925 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 515 predicate places. [2024-06-27 18:51:28,925 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 620 transitions, 9168 flow [2024-06-27 18:51:28,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:28,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:28,925 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 18:51:28,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:51:28,925 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:28,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:28,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1544849681, now seen corresponding path program 3 times [2024-06-27 18:51:28,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:28,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408958942] [2024-06-27 18:51:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:28,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:30,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:30,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408958942] [2024-06-27 18:51:30,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408958942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:30,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:30,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:30,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474028983] [2024-06-27 18:51:30,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:30,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:30,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:30,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:30,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:30,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:30,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 620 transitions, 9168 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:30,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:30,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:30,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:32,574 INFO L124 PetriNetUnfolderBase]: 3054/6471 cut-off events. [2024-06-27 18:51:32,574 INFO L125 PetriNetUnfolderBase]: For 288303/288303 co-relation queries the response was YES. [2024-06-27 18:51:32,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36049 conditions, 6471 events. 3054/6471 cut-off events. For 288303/288303 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 54859 event pairs, 884 based on Foata normal form. 8/5972 useless extension candidates. Maximal degree in co-relation 35805. Up to 4944 conditions per place. [2024-06-27 18:51:32,694 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 517 selfloop transitions, 127 changer transitions 0/653 dead transitions. [2024-06-27 18:51:32,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 653 transitions, 10747 flow [2024-06-27 18:51:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:51:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:51:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 18:51:32,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:51:32,696 INFO L175 Difference]: Start difference. First operand has 556 places, 620 transitions, 9168 flow. Second operand 12 states and 198 transitions. [2024-06-27 18:51:32,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 653 transitions, 10747 flow [2024-06-27 18:51:34,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 653 transitions, 10563 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:51:34,885 INFO L231 Difference]: Finished difference. Result has 559 places, 622 transitions, 9331 flow [2024-06-27 18:51:34,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8984, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9331, PETRI_PLACES=559, PETRI_TRANSITIONS=622} [2024-06-27 18:51:34,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 518 predicate places. [2024-06-27 18:51:34,886 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 622 transitions, 9331 flow [2024-06-27 18:51:34,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:34,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:34,887 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 18:51:34,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:51:34,887 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:34,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:34,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1388810607, now seen corresponding path program 4 times [2024-06-27 18:51:34,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622357962] [2024-06-27 18:51:34,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:34,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:36,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:36,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622357962] [2024-06-27 18:51:36,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622357962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:36,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:36,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528944692] [2024-06-27 18:51:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:36,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:36,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:36,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:36,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:36,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 622 transitions, 9331 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:36,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:36,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:36,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:38,481 INFO L124 PetriNetUnfolderBase]: 3229/6922 cut-off events. [2024-06-27 18:51:38,481 INFO L125 PetriNetUnfolderBase]: For 370612/370612 co-relation queries the response was YES. [2024-06-27 18:51:38,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39408 conditions, 6922 events. 3229/6922 cut-off events. For 370612/370612 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 59944 event pairs, 995 based on Foata normal form. 6/6405 useless extension candidates. Maximal degree in co-relation 39162. Up to 4512 conditions per place. [2024-06-27 18:51:38,614 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 510 selfloop transitions, 141 changer transitions 0/660 dead transitions. [2024-06-27 18:51:38,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 660 transitions, 11243 flow [2024-06-27 18:51:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:51:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:51:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 18:51:38,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 18:51:38,615 INFO L175 Difference]: Start difference. First operand has 559 places, 622 transitions, 9331 flow. Second operand 12 states and 205 transitions. [2024-06-27 18:51:38,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 660 transitions, 11243 flow [2024-06-27 18:51:41,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 660 transitions, 10989 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:41,831 INFO L231 Difference]: Finished difference. Result has 562 places, 622 transitions, 9362 flow [2024-06-27 18:51:41,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9077, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9362, PETRI_PLACES=562, PETRI_TRANSITIONS=622} [2024-06-27 18:51:41,832 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 521 predicate places. [2024-06-27 18:51:41,832 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 622 transitions, 9362 flow [2024-06-27 18:51:41,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:41,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:41,832 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 18:51:41,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 18:51:41,832 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:41,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash -424133141, now seen corresponding path program 10 times [2024-06-27 18:51:41,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556416002] [2024-06-27 18:51:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:41,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:42,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556416002] [2024-06-27 18:51:42,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556416002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:42,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:42,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:51:42,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736839779] [2024-06-27 18:51:42,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:42,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:51:42,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:42,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:51:42,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:51:43,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:43,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 622 transitions, 9362 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:43,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:43,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:43,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:45,503 INFO L124 PetriNetUnfolderBase]: 3300/7089 cut-off events. [2024-06-27 18:51:45,503 INFO L125 PetriNetUnfolderBase]: For 431646/431646 co-relation queries the response was YES. [2024-06-27 18:51:45,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40550 conditions, 7089 events. 3300/7089 cut-off events. For 431646/431646 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 61928 event pairs, 1073 based on Foata normal form. 10/6563 useless extension candidates. Maximal degree in co-relation 40303. Up to 5427 conditions per place. [2024-06-27 18:51:45,625 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 508 selfloop transitions, 133 changer transitions 0/650 dead transitions. [2024-06-27 18:51:45,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 650 transitions, 10900 flow [2024-06-27 18:51:45,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:45,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:51:45,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:51:45,626 INFO L175 Difference]: Start difference. First operand has 562 places, 622 transitions, 9362 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:51:45,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 650 transitions, 10900 flow [2024-06-27 18:51:48,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 650 transitions, 10642 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:48,236 INFO L231 Difference]: Finished difference. Result has 564 places, 623 transitions, 9429 flow [2024-06-27 18:51:48,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9104, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9429, PETRI_PLACES=564, PETRI_TRANSITIONS=623} [2024-06-27 18:51:48,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 523 predicate places. [2024-06-27 18:51:48,236 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 623 transitions, 9429 flow [2024-06-27 18:51:48,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:48,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:48,237 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 18:51:48,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 18:51:48,237 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:48,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:48,237 INFO L85 PathProgramCache]: Analyzing trace with hash -275512677, now seen corresponding path program 11 times [2024-06-27 18:51:48,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:48,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156145022] [2024-06-27 18:51:48,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:49,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156145022] [2024-06-27 18:51:49,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156145022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:49,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:49,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:51:49,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672558024] [2024-06-27 18:51:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:49,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:51:49,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:49,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:51:49,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:51:49,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:49,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 623 transitions, 9429 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:49,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:49,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:49,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:51,924 INFO L124 PetriNetUnfolderBase]: 3317/7128 cut-off events. [2024-06-27 18:51:51,924 INFO L125 PetriNetUnfolderBase]: For 343943/343943 co-relation queries the response was YES. [2024-06-27 18:51:52,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41091 conditions, 7128 events. 3317/7128 cut-off events. For 343943/343943 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62385 event pairs, 1082 based on Foata normal form. 2/6590 useless extension candidates. Maximal degree in co-relation 40844. Up to 5588 conditions per place. [2024-06-27 18:51:52,063 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 504 selfloop transitions, 135 changer transitions 0/648 dead transitions. [2024-06-27 18:51:52,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 648 transitions, 10911 flow [2024-06-27 18:51:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:51:52,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:51:52,064 INFO L175 Difference]: Start difference. First operand has 564 places, 623 transitions, 9429 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:51:52,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 648 transitions, 10911 flow [2024-06-27 18:51:54,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 648 transitions, 10618 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:54,887 INFO L231 Difference]: Finished difference. Result has 566 places, 624 transitions, 9461 flow [2024-06-27 18:51:54,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9136, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9461, PETRI_PLACES=566, PETRI_TRANSITIONS=624} [2024-06-27 18:51:54,888 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 525 predicate places. [2024-06-27 18:51:54,888 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 624 transitions, 9461 flow [2024-06-27 18:51:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:54,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:54,888 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 18:51:54,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 18:51:54,889 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:54,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:54,889 INFO L85 PathProgramCache]: Analyzing trace with hash -625429781, now seen corresponding path program 12 times [2024-06-27 18:51:54,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:54,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501194179] [2024-06-27 18:51:54,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:54,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:56,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:56,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501194179] [2024-06-27 18:51:56,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501194179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:56,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:56,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:51:56,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409535253] [2024-06-27 18:51:56,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:56,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:51:56,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:51:56,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:51:56,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:51:56,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 624 transitions, 9461 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:56,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:56,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:51:56,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:58,578 INFO L124 PetriNetUnfolderBase]: 3459/7454 cut-off events. [2024-06-27 18:51:58,578 INFO L125 PetriNetUnfolderBase]: For 429311/429311 co-relation queries the response was YES. [2024-06-27 18:51:58,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42873 conditions, 7454 events. 3459/7454 cut-off events. For 429311/429311 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 66065 event pairs, 1097 based on Foata normal form. 8/6904 useless extension candidates. Maximal degree in co-relation 42625. Up to 5749 conditions per place. [2024-06-27 18:51:58,722 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 585 selfloop transitions, 68 changer transitions 0/662 dead transitions. [2024-06-27 18:51:58,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 662 transitions, 11164 flow [2024-06-27 18:51:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:51:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:51:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-27 18:51:58,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-27 18:51:58,723 INFO L175 Difference]: Start difference. First operand has 566 places, 624 transitions, 9461 flow. Second operand 12 states and 202 transitions. [2024-06-27 18:51:58,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 662 transitions, 11164 flow [2024-06-27 18:52:01,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 662 transitions, 10851 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:01,660 INFO L231 Difference]: Finished difference. Result has 572 places, 628 transitions, 9375 flow [2024-06-27 18:52:01,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9152, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9375, PETRI_PLACES=572, PETRI_TRANSITIONS=628} [2024-06-27 18:52:01,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 531 predicate places. [2024-06-27 18:52:01,661 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 628 transitions, 9375 flow [2024-06-27 18:52:01,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:01,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:01,661 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 18:52:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 18:52:01,662 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:01,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 31736275, now seen corresponding path program 13 times [2024-06-27 18:52:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:01,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147620473] [2024-06-27 18:52:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:01,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147620473] [2024-06-27 18:52:02,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147620473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:02,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:02,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:52:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953225826] [2024-06-27 18:52:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:02,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:52:02,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:02,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:52:02,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:52:02,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:52:02,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 628 transitions, 9375 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:02,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:02,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:52:02,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:05,490 INFO L124 PetriNetUnfolderBase]: 3476/7518 cut-off events. [2024-06-27 18:52:05,490 INFO L125 PetriNetUnfolderBase]: For 359977/359977 co-relation queries the response was YES. [2024-06-27 18:52:05,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42913 conditions, 7518 events. 3476/7518 cut-off events. For 359977/359977 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 66879 event pairs, 1175 based on Foata normal form. 2/6957 useless extension candidates. Maximal degree in co-relation 42661. Up to 5772 conditions per place. [2024-06-27 18:52:05,636 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 475 selfloop transitions, 169 changer transitions 0/653 dead transitions. [2024-06-27 18:52:05,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 653 transitions, 10869 flow [2024-06-27 18:52:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:52:05,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:52:05,638 INFO L175 Difference]: Start difference. First operand has 572 places, 628 transitions, 9375 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:52:05,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 653 transitions, 10869 flow [2024-06-27 18:52:08,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 653 transitions, 10751 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:52:08,883 INFO L231 Difference]: Finished difference. Result has 576 places, 629 transitions, 9651 flow [2024-06-27 18:52:08,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9257, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9651, PETRI_PLACES=576, PETRI_TRANSITIONS=629} [2024-06-27 18:52:08,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 535 predicate places. [2024-06-27 18:52:08,884 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 629 transitions, 9651 flow [2024-06-27 18:52:08,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:08,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:08,884 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 18:52:08,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 18:52:08,884 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:08,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:08,884 INFO L85 PathProgramCache]: Analyzing trace with hash -275720067, now seen corresponding path program 14 times [2024-06-27 18:52:08,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:08,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23984739] [2024-06-27 18:52:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:08,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:09,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23984739] [2024-06-27 18:52:09,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23984739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:09,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:09,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:52:09,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737123405] [2024-06-27 18:52:09,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:09,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:52:09,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:09,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:52:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:52:10,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:52:10,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 629 transitions, 9651 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:10,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:10,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:52:10,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:12,669 INFO L124 PetriNetUnfolderBase]: 3493/7555 cut-off events. [2024-06-27 18:52:12,669 INFO L125 PetriNetUnfolderBase]: For 371652/371652 co-relation queries the response was YES. [2024-06-27 18:52:12,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43838 conditions, 7555 events. 3493/7555 cut-off events. For 371652/371652 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 67331 event pairs, 1175 based on Foata normal form. 2/6996 useless extension candidates. Maximal degree in co-relation 43585. Up to 5713 conditions per place. [2024-06-27 18:52:12,833 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 516 selfloop transitions, 136 changer transitions 0/661 dead transitions. [2024-06-27 18:52:12,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 661 transitions, 11235 flow [2024-06-27 18:52:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:52:12,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:52:12,835 INFO L175 Difference]: Start difference. First operand has 576 places, 629 transitions, 9651 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:52:12,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 661 transitions, 11235 flow [2024-06-27 18:52:16,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 661 transitions, 10882 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:52:16,033 INFO L231 Difference]: Finished difference. Result has 579 places, 630 transitions, 9626 flow [2024-06-27 18:52:16,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9298, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9626, PETRI_PLACES=579, PETRI_TRANSITIONS=630} [2024-06-27 18:52:16,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 538 predicate places. [2024-06-27 18:52:16,034 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 630 transitions, 9626 flow [2024-06-27 18:52:16,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:16,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:16,034 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 18:52:16,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 18:52:16,034 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:16,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash -475166007, now seen corresponding path program 15 times [2024-06-27 18:52:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:16,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98929992] [2024-06-27 18:52:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:16,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98929992] [2024-06-27 18:52:17,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98929992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:17,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:17,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:52:17,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5995741] [2024-06-27 18:52:17,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:17,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:52:17,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:52:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:52:17,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:52:17,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 630 transitions, 9626 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:17,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:17,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:52:17,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:19,657 INFO L124 PetriNetUnfolderBase]: 3547/7633 cut-off events. [2024-06-27 18:52:19,657 INFO L125 PetriNetUnfolderBase]: For 452966/452966 co-relation queries the response was YES. [2024-06-27 18:52:19,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44334 conditions, 7633 events. 3547/7633 cut-off events. For 452966/452966 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67925 event pairs, 1154 based on Foata normal form. 8/7079 useless extension candidates. Maximal degree in co-relation 44080. Up to 5973 conditions per place. [2024-06-27 18:52:19,818 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 549 selfloop transitions, 108 changer transitions 0/666 dead transitions. [2024-06-27 18:52:19,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 666 transitions, 11207 flow [2024-06-27 18:52:19,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:19,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:52:19,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:52:19,819 INFO L175 Difference]: Start difference. First operand has 579 places, 630 transitions, 9626 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:52:19,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 666 transitions, 11207 flow [2024-06-27 18:52:23,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 666 transitions, 10889 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:23,478 INFO L231 Difference]: Finished difference. Result has 581 places, 630 transitions, 9527 flow [2024-06-27 18:52:23,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9308, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9527, PETRI_PLACES=581, PETRI_TRANSITIONS=630} [2024-06-27 18:52:23,479 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 540 predicate places. [2024-06-27 18:52:23,479 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 630 transitions, 9527 flow [2024-06-27 18:52:23,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:23,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:23,479 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 18:52:23,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 18:52:23,479 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:23,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1994658419, now seen corresponding path program 16 times [2024-06-27 18:52:23,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:23,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464665013] [2024-06-27 18:52:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:24,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:24,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464665013] [2024-06-27 18:52:24,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464665013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:24,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:24,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:52:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679942312] [2024-06-27 18:52:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:24,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:52:24,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:24,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:52:24,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:52:24,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:52:24,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 630 transitions, 9527 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:24,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:24,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:52:24,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:27,517 INFO L124 PetriNetUnfolderBase]: 3648/7927 cut-off events. [2024-06-27 18:52:27,517 INFO L125 PetriNetUnfolderBase]: For 521405/521405 co-relation queries the response was YES. [2024-06-27 18:52:27,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47298 conditions, 7927 events. 3648/7927 cut-off events. For 521405/521405 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 71526 event pairs, 1270 based on Foata normal form. 2/7347 useless extension candidates. Maximal degree in co-relation 47043. Up to 5645 conditions per place. [2024-06-27 18:52:27,678 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 441 selfloop transitions, 214 changer transitions 0/664 dead transitions. [2024-06-27 18:52:27,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 664 transitions, 11499 flow [2024-06-27 18:52:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:52:27,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:52:27,679 INFO L175 Difference]: Start difference. First operand has 581 places, 630 transitions, 9527 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:52:27,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 664 transitions, 11499 flow [2024-06-27 18:52:32,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 664 transitions, 11284 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:32,534 INFO L231 Difference]: Finished difference. Result has 583 places, 632 transitions, 9850 flow [2024-06-27 18:52:32,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9312, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9850, PETRI_PLACES=583, PETRI_TRANSITIONS=632} [2024-06-27 18:52:32,535 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 542 predicate places. [2024-06-27 18:52:32,535 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 632 transitions, 9850 flow [2024-06-27 18:52:32,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:32,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:32,535 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 18:52:32,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 18:52:32,535 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:32,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1987301189, now seen corresponding path program 17 times [2024-06-27 18:52:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:32,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419787252] [2024-06-27 18:52:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:32,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:33,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:33,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419787252] [2024-06-27 18:52:33,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419787252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:33,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:33,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:52:33,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549822933] [2024-06-27 18:52:33,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:33,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:52:33,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:52:33,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:52:33,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:52:33,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 632 transitions, 9850 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:33,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:33,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:52:33,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:36,452 INFO L124 PetriNetUnfolderBase]: 3719/8114 cut-off events. [2024-06-27 18:52:36,453 INFO L125 PetriNetUnfolderBase]: For 638173/638173 co-relation queries the response was YES. [2024-06-27 18:52:36,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49060 conditions, 8114 events. 3719/8114 cut-off events. For 638173/638173 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 73666 event pairs, 1326 based on Foata normal form. 10/7528 useless extension candidates. Maximal degree in co-relation 48804. Up to 5918 conditions per place. [2024-06-27 18:52:36,616 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 448 selfloop transitions, 203 changer transitions 0/660 dead transitions. [2024-06-27 18:52:36,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 660 transitions, 11418 flow [2024-06-27 18:52:36,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:52:36,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:52:36,617 INFO L175 Difference]: Start difference. First operand has 583 places, 632 transitions, 9850 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:52:36,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 660 transitions, 11418 flow [2024-06-27 18:52:42,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 660 transitions, 11045 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:52:42,208 INFO L231 Difference]: Finished difference. Result has 587 places, 633 transitions, 9949 flow [2024-06-27 18:52:42,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9497, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9949, PETRI_PLACES=587, PETRI_TRANSITIONS=633} [2024-06-27 18:52:42,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 546 predicate places. [2024-06-27 18:52:42,209 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 633 transitions, 9949 flow [2024-06-27 18:52:42,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:42,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:42,209 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 18:52:42,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 18:52:42,209 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:42,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:42,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1737950519, now seen corresponding path program 18 times [2024-06-27 18:52:42,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:42,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92404349] [2024-06-27 18:52:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:42,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92404349] [2024-06-27 18:52:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92404349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:43,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:43,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:52:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739249497] [2024-06-27 18:52:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:43,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:52:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:52:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:52:43,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:52:43,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 633 transitions, 9949 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:43,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:43,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:52:43,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:46,638 INFO L124 PetriNetUnfolderBase]: 3706/8091 cut-off events. [2024-06-27 18:52:46,638 INFO L125 PetriNetUnfolderBase]: For 499672/499672 co-relation queries the response was YES. [2024-06-27 18:52:46,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47020 conditions, 8091 events. 3706/8091 cut-off events. For 499672/499672 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 73431 event pairs, 1317 based on Foata normal form. 10/7505 useless extension candidates. Maximal degree in co-relation 46762. Up to 5895 conditions per place. [2024-06-27 18:52:46,777 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 436 selfloop transitions, 215 changer transitions 0/660 dead transitions. [2024-06-27 18:52:46,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 660 transitions, 11463 flow [2024-06-27 18:52:46,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:46,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:52:46,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:52:46,778 INFO L175 Difference]: Start difference. First operand has 587 places, 633 transitions, 9949 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:52:46,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 660 transitions, 11463 flow [2024-06-27 18:52:50,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 660 transitions, 11015 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:50,477 INFO L231 Difference]: Finished difference. Result has 589 places, 633 transitions, 9941 flow [2024-06-27 18:52:50,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9501, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9941, PETRI_PLACES=589, PETRI_TRANSITIONS=633} [2024-06-27 18:52:50,477 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 548 predicate places. [2024-06-27 18:52:50,477 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 633 transitions, 9941 flow [2024-06-27 18:52:50,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:50,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:50,477 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 18:52:50,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 18:52:50,477 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:50,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:50,478 INFO L85 PathProgramCache]: Analyzing trace with hash -268086131, now seen corresponding path program 5 times [2024-06-27 18:52:50,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:50,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568039090] [2024-06-27 18:52:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:51,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:51,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568039090] [2024-06-27 18:52:51,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568039090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:51,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:51,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:51,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122274226] [2024-06-27 18:52:51,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:51,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:51,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:51,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:51,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:52,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:52:52,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 633 transitions, 9941 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:52,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:52,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:52:52,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:55,460 INFO L124 PetriNetUnfolderBase]: 3807/8384 cut-off events. [2024-06-27 18:52:55,460 INFO L125 PetriNetUnfolderBase]: For 555152/555152 co-relation queries the response was YES. [2024-06-27 18:52:55,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49422 conditions, 8384 events. 3807/8384 cut-off events. For 555152/555152 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 77081 event pairs, 1341 based on Foata normal form. 6/7778 useless extension candidates. Maximal degree in co-relation 49163. Up to 5716 conditions per place. [2024-06-27 18:52:55,631 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 489 selfloop transitions, 172 changer transitions 0/670 dead transitions. [2024-06-27 18:52:55,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 670 transitions, 11939 flow [2024-06-27 18:52:55,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:52:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:52:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-27 18:52:55,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-27 18:52:55,632 INFO L175 Difference]: Start difference. First operand has 589 places, 633 transitions, 9941 flow. Second operand 12 states and 206 transitions. [2024-06-27 18:52:55,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 670 transitions, 11939 flow [2024-06-27 18:53:00,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 670 transitions, 11489 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:53:00,805 INFO L231 Difference]: Finished difference. Result has 591 places, 633 transitions, 9838 flow [2024-06-27 18:53:00,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9491, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9838, PETRI_PLACES=591, PETRI_TRANSITIONS=633} [2024-06-27 18:53:00,806 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 550 predicate places. [2024-06-27 18:53:00,806 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 633 transitions, 9838 flow [2024-06-27 18:53:00,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:00,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:00,806 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 18:53:00,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 18:53:00,806 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:00,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:00,807 INFO L85 PathProgramCache]: Analyzing trace with hash -431275045, now seen corresponding path program 6 times [2024-06-27 18:53:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:00,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102054574] [2024-06-27 18:53:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:00,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:02,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102054574] [2024-06-27 18:53:02,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102054574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:02,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:02,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:53:02,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827629253] [2024-06-27 18:53:02,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:02,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:53:02,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:02,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:53:02,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:53:02,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:53:02,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 633 transitions, 9838 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:02,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:02,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:53:02,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:05,616 INFO L124 PetriNetUnfolderBase]: 3861/8485 cut-off events. [2024-06-27 18:53:05,616 INFO L125 PetriNetUnfolderBase]: For 601443/601443 co-relation queries the response was YES. [2024-06-27 18:53:05,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49792 conditions, 8485 events. 3861/8485 cut-off events. For 601443/601443 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 78298 event pairs, 1418 based on Foata normal form. 8/7874 useless extension candidates. Maximal degree in co-relation 49532. Up to 6528 conditions per place. [2024-06-27 18:53:05,777 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 523 selfloop transitions, 128 changer transitions 0/660 dead transitions. [2024-06-27 18:53:05,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 660 transitions, 11352 flow [2024-06-27 18:53:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:53:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:53:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:53:05,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 18:53:05,778 INFO L175 Difference]: Start difference. First operand has 591 places, 633 transitions, 9838 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:53:05,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 660 transitions, 11352 flow [2024-06-27 18:53:10,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 660 transitions, 10962 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 18:53:10,878 INFO L231 Difference]: Finished difference. Result has 592 places, 633 transitions, 9716 flow [2024-06-27 18:53:10,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9448, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9716, PETRI_PLACES=592, PETRI_TRANSITIONS=633} [2024-06-27 18:53:10,879 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 551 predicate places. [2024-06-27 18:53:10,879 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 633 transitions, 9716 flow [2024-06-27 18:53:10,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:10,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:10,879 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 18:53:10,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 18:53:10,879 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:10,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash -424125205, now seen corresponding path program 7 times [2024-06-27 18:53:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199246877] [2024-06-27 18:53:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:10,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:12,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:12,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199246877] [2024-06-27 18:53:12,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199246877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:12,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:12,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:12,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546518230] [2024-06-27 18:53:12,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:12,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:12,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:12,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:12,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:53:12,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 633 transitions, 9716 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:12,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:12,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:53:12,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:16,027 INFO L124 PetriNetUnfolderBase]: 3851/8466 cut-off events. [2024-06-27 18:53:16,027 INFO L125 PetriNetUnfolderBase]: For 496251/496251 co-relation queries the response was YES. [2024-06-27 18:53:16,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48108 conditions, 8466 events. 3851/8466 cut-off events. For 496251/496251 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 78053 event pairs, 1420 based on Foata normal form. 8/7858 useless extension candidates. Maximal degree in co-relation 47848. Up to 6394 conditions per place. [2024-06-27 18:53:16,176 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 518 selfloop transitions, 135 changer transitions 0/662 dead transitions. [2024-06-27 18:53:16,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 662 transitions, 11250 flow [2024-06-27 18:53:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:53:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:53:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 18:53:16,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:53:16,177 INFO L175 Difference]: Start difference. First operand has 592 places, 633 transitions, 9716 flow. Second operand 12 states and 200 transitions. [2024-06-27 18:53:16,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 662 transitions, 11250 flow [2024-06-27 18:53:20,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 662 transitions, 11004 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:53:20,437 INFO L231 Difference]: Finished difference. Result has 595 places, 633 transitions, 9759 flow [2024-06-27 18:53:20,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9470, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9759, PETRI_PLACES=595, PETRI_TRANSITIONS=633} [2024-06-27 18:53:20,437 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 554 predicate places. [2024-06-27 18:53:20,437 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 633 transitions, 9759 flow [2024-06-27 18:53:20,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:20,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:20,438 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 18:53:20,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 18:53:20,438 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:20,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:20,438 INFO L85 PathProgramCache]: Analyzing trace with hash 763104973, now seen corresponding path program 8 times [2024-06-27 18:53:20,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:20,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655921782] [2024-06-27 18:53:20,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:20,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:22,475 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 18:53:22,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:22,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655921782] [2024-06-27 18:53:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655921782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:22,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:22,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948868022] [2024-06-27 18:53:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:22,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:22,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:22,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:22,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:53:22,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 633 transitions, 9759 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:22,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:22,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:53:22,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:26,334 INFO L124 PetriNetUnfolderBase]: 3905/8619 cut-off events. [2024-06-27 18:53:26,334 INFO L125 PetriNetUnfolderBase]: For 502519/502519 co-relation queries the response was YES. [2024-06-27 18:53:26,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48891 conditions, 8619 events. 3905/8619 cut-off events. For 502519/502519 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 79974 event pairs, 1462 based on Foata normal form. 8/8000 useless extension candidates. Maximal degree in co-relation 48630. Up to 6304 conditions per place. [2024-06-27 18:53:26,487 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 439 selfloop transitions, 214 changer transitions 0/662 dead transitions. [2024-06-27 18:53:26,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 662 transitions, 11293 flow [2024-06-27 18:53:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:53:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:53:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-27 18:53:26,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:53:26,488 INFO L175 Difference]: Start difference. First operand has 595 places, 633 transitions, 9759 flow. Second operand 12 states and 204 transitions. [2024-06-27 18:53:26,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 662 transitions, 11293 flow [2024-06-27 18:53:30,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 662 transitions, 11023 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:53:30,529 INFO L231 Difference]: Finished difference. Result has 596 places, 633 transitions, 9927 flow [2024-06-27 18:53:30,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9489, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9927, PETRI_PLACES=596, PETRI_TRANSITIONS=633} [2024-06-27 18:53:30,529 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 555 predicate places. [2024-06-27 18:53:30,529 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 633 transitions, 9927 flow [2024-06-27 18:53:30,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:30,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:30,530 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 18:53:30,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 18:53:30,530 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:30,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1987024483, now seen corresponding path program 9 times [2024-06-27 18:53:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901331780] [2024-06-27 18:53:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:32,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:32,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901331780] [2024-06-27 18:53:32,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901331780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:32,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:32,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:32,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627482062] [2024-06-27 18:53:32,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:32,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:32,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:32,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:32,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:53:32,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 633 transitions, 9927 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:32,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:32,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:53:32,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:35,514 INFO L124 PetriNetUnfolderBase]: 4006/8858 cut-off events. [2024-06-27 18:53:35,514 INFO L125 PetriNetUnfolderBase]: For 594175/594175 co-relation queries the response was YES. [2024-06-27 18:53:35,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51846 conditions, 8858 events. 4006/8858 cut-off events. For 594175/594175 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 82770 event pairs, 1502 based on Foata normal form. 6/8237 useless extension candidates. Maximal degree in co-relation 51584. Up to 6230 conditions per place. [2024-06-27 18:53:35,685 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 483 selfloop transitions, 177 changer transitions 0/669 dead transitions. [2024-06-27 18:53:35,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 669 transitions, 11879 flow [2024-06-27 18:53:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:53:35,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:53:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-27 18:53:35,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:53:35,686 INFO L175 Difference]: Start difference. First operand has 596 places, 633 transitions, 9927 flow. Second operand 12 states and 208 transitions. [2024-06-27 18:53:35,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 669 transitions, 11879 flow [2024-06-27 18:53:41,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 669 transitions, 11451 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:53:41,090 INFO L231 Difference]: Finished difference. Result has 597 places, 633 transitions, 9856 flow [2024-06-27 18:53:41,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9499, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9856, PETRI_PLACES=597, PETRI_TRANSITIONS=633} [2024-06-27 18:53:41,091 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 556 predicate places. [2024-06-27 18:53:41,091 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 633 transitions, 9856 flow [2024-06-27 18:53:41,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:41,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:41,091 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 18:53:41,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 18:53:41,091 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:41,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:41,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1987293253, now seen corresponding path program 10 times [2024-06-27 18:53:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:41,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394083951] [2024-06-27 18:53:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:41,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:42,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:42,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394083951] [2024-06-27 18:53:42,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394083951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:42,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:42,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:42,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319490368] [2024-06-27 18:53:42,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:42,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:42,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:42,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:42,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:42,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:53:42,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 633 transitions, 9856 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:42,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:42,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:53:42,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand