./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi008.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/rfi008.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:43:13,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:43:13,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:43:13,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:43:13,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:43:13,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:43:13,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:43:13,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:43:13,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:43:13,261 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:43:13,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:43:13,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:43:13,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:43:13,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:43:13,264 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:43:13,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:43:13,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:43:13,264 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:43:13,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:43:13,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:43:13,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:43:13,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:43:13,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:43:13,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:43:13,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:43:13,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:43:13,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:43:13,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:43:13,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:43:13,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:43:13,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:43:13,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:43:13,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:43:13,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:43:13,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:43:13,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:43:13,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:43:13,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:43:13,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:43:13,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:43:13,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:43:13,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:43:13,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:43:13,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:43:13,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:43:13,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:43:13,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:43:13,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:43:13,510 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:43:13,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-27 18:43:14,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:43:14,778 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:43:14,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-27 18:43:14,791 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3fad2a2e/da87eab957fb4b4eb2c4fe50283fce58/FLAGd3d0efd50 [2024-06-27 18:43:14,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3fad2a2e/da87eab957fb4b4eb2c4fe50283fce58 [2024-06-27 18:43:14,807 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:43:14,807 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:43:14,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi008.oepc.yml/witness.yml [2024-06-27 18:43:14,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:43:14,942 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:43:14,943 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:43:14,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:43:14,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:43:14,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:43:14" (1/2) ... [2024-06-27 18:43:14,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a946851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:43:14, skipping insertion in model container [2024-06-27 18:43:14,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:43:14" (1/2) ... [2024-06-27 18:43:14,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47b493f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:43:14, skipping insertion in model container [2024-06-27 18:43:14,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:43:14" (2/2) ... [2024-06-27 18:43:14,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a946851 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:14, skipping insertion in model container [2024-06-27 18:43:14,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:43:14" (2/2) ... [2024-06-27 18:43:14,951 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:43:15,008 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:43:15,009 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:43:15,009 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:43:15,009 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:43:15,010 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 18:43:15,047 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:43:15,211 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.oepc.i[988,1001] [2024-06-27 18:43:15,393 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:43:15,401 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:43:15,428 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.oepc.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:43:15,503 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:43:15,529 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:43:15,530 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:43:15 WrapperNode [2024-06-27 18:43:15,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:43:15,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:43:15,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:43:15,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:43:15,536 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,548 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,570 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 18:43:15,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:43:15,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:43:15,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:43:15,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:43:15,579 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,580 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,582 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,594 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 18:43:15,595 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,595 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,609 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,611 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,612 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,613 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:43:15,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:43:15,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:43:15,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:43:15,617 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 06:43:15" (1/1) ... [2024-06-27 18:43:15,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:43:15,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:43:15,657 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 18:43:15,674 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 18:43:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:43:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:43:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:43:15,685 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:43:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:43:15,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:43:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:43:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:43:15,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:43:15,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:43:15,688 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 18:43:15,778 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:43:15,780 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:43:16,095 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:43:16,096 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:43:16,236 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:43:16,236 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:43:16,237 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:43:16 BoogieIcfgContainer [2024-06-27 18:43:16,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:43:16,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:43:16,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:43:16,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:43:16,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:43:14" (1/4) ... [2024-06-27 18:43:16,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ab8b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:43:16, skipping insertion in model container [2024-06-27 18:43:16,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:43:14" (2/4) ... [2024-06-27 18:43:16,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ab8b35 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:43:16, skipping insertion in model container [2024-06-27 18:43:16,244 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 06:43:15" (3/4) ... [2024-06-27 18:43:16,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ab8b35 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:43:16, skipping insertion in model container [2024-06-27 18:43:16,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:43:16" (4/4) ... [2024-06-27 18:43:16,245 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.oepc.i [2024-06-27 18:43:16,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:43:16,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:43:16,259 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:43:16,290 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:43:16,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:43:16,346 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:43:16,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:43:16,351 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 4. Compared 54 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 18:43:16,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:43:16,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:43:16,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:43:16,367 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;@41a28a93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:43:16,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:43:16,371 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:43:16,371 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:43:16,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:43:16,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:16,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:43:16,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:16,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:16,376 INFO L85 PathProgramCache]: Analyzing trace with hash 351384175, now seen corresponding path program 1 times [2024-06-27 18:43:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:16,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197143606] [2024-06-27 18:43:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:17,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:17,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197143606] [2024-06-27 18:43:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197143606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:17,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:43:17,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221056121] [2024-06-27 18:43:17,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:17,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:43:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:43:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:43:17,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:43:17,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:17,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:43:17,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:17,436 INFO L124 PetriNetUnfolderBase]: 475/961 cut-off events. [2024-06-27 18:43:17,436 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 18:43:17,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 961 events. 475/961 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5428 event pairs, 334 based on Foata normal form. 36/899 useless extension candidates. Maximal degree in co-relation 1766. Up to 787 conditions per place. [2024-06-27 18:43:17,444 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:43:17,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 167 flow [2024-06-27 18:43:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:43:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:43:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 18:43:17,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-27 18:43:17,454 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 77 transitions. [2024-06-27 18:43:17,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 167 flow [2024-06-27 18:43:17,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:17,458 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:43:17,460 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 18:43:17,462 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:43:17,462 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:43:17,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:17,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:43:17,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:43:17,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:17,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash 351384258, now seen corresponding path program 1 times [2024-06-27 18:43:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291329316] [2024-06-27 18:43:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291329316] [2024-06-27 18:43:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291329316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:17,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:17,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:43:17,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841012331] [2024-06-27 18:43:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:17,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:43:17,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:43:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:43:17,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 37 [2024-06-27 18:43:17,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:17,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 37 [2024-06-27 18:43:17,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:17,592 INFO L124 PetriNetUnfolderBase]: 219/526 cut-off events. [2024-06-27 18:43:17,593 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-27 18:43:17,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 526 events. 219/526 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2984 event pairs, 130 based on Foata normal form. 0/496 useless extension candidates. Maximal degree in co-relation 969. Up to 340 conditions per place. [2024-06-27 18:43:17,595 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 24 selfloop transitions, 3 changer transitions 2/46 dead transitions. [2024-06-27 18:43:17,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 173 flow [2024-06-27 18:43:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:43:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:43:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-27 18:43:17,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-06-27 18:43:17,597 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 83 transitions. [2024-06-27 18:43:17,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 173 flow [2024-06-27 18:43:17,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:43:17,601 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 92 flow [2024-06-27 18:43:17,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-27 18:43:17,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:43:17,602 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 92 flow [2024-06-27 18:43:17,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:17,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:17,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:43:17,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:17,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:17,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1622136343, now seen corresponding path program 1 times [2024-06-27 18:43:17,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:17,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878423874] [2024-06-27 18:43:17,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:17,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:17,967 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 18:43:17,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:17,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878423874] [2024-06-27 18:43:17,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878423874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:17,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:17,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:43:17,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856441373] [2024-06-27 18:43:17,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:17,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:43:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:43:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:43:18,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:43:18,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:18,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:18,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:43:18,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:18,114 INFO L124 PetriNetUnfolderBase]: 342/721 cut-off events. [2024-06-27 18:43:18,115 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-27 18:43:18,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 721 events. 342/721 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3826 event pairs, 218 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 1459. Up to 562 conditions per place. [2024-06-27 18:43:18,119 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 34 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-06-27 18:43:18,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 218 flow [2024-06-27 18:43:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:43:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:43:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-27 18:43:18,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 18:43:18,121 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 92 flow. Second operand 4 states and 92 transitions. [2024-06-27 18:43:18,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 218 flow [2024-06-27 18:43:18,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:18,122 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 135 flow [2024-06-27 18:43:18,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, 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=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:43:18,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-27 18:43:18,123 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 135 flow [2024-06-27 18:43:18,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:18,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:18,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:18,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:43:18,124 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:18,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1253381954, now seen corresponding path program 1 times [2024-06-27 18:43:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:18,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456411845] [2024-06-27 18:43:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:18,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:18,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456411845] [2024-06-27 18:43:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456411845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:18,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:43:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402045049] [2024-06-27 18:43:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:43:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:43:18,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:43:18,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:43:18,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:18,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:18,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:43:18,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:19,064 INFO L124 PetriNetUnfolderBase]: 342/729 cut-off events. [2024-06-27 18:43:19,065 INFO L125 PetriNetUnfolderBase]: For 292/292 co-relation queries the response was YES. [2024-06-27 18:43:19,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 729 events. 342/729 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3899 event pairs, 143 based on Foata normal form. 4/703 useless extension candidates. Maximal degree in co-relation 1606. Up to 532 conditions per place. [2024-06-27 18:43:19,068 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 42 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-27 18:43:19,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 293 flow [2024-06-27 18:43:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:43:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:43:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 18:43:19,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 18:43:19,070 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 135 flow. Second operand 5 states and 115 transitions. [2024-06-27 18:43:19,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 293 flow [2024-06-27 18:43:19,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 286 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:43:19,072 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 163 flow [2024-06-27 18:43:19,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-27 18:43:19,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-06-27 18:43:19,073 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 163 flow [2024-06-27 18:43:19,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:19,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:19,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:19,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:43:19,074 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:19,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash -339406244, now seen corresponding path program 1 times [2024-06-27 18:43:19,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:19,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052370487] [2024-06-27 18:43:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:19,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:19,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:19,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052370487] [2024-06-27 18:43:19,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052370487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:19,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:19,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:43:19,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950555220] [2024-06-27 18:43:19,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:19,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:43:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:43:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:43:19,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:19,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 18:43:19,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:19,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:19,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:19,783 INFO L124 PetriNetUnfolderBase]: 559/1100 cut-off events. [2024-06-27 18:43:19,783 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-06-27 18:43:19,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2603 conditions, 1100 events. 559/1100 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5910 event pairs, 254 based on Foata normal form. 1/1059 useless extension candidates. Maximal degree in co-relation 2585. Up to 908 conditions per place. [2024-06-27 18:43:19,788 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 40 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2024-06-27 18:43:19,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 293 flow [2024-06-27 18:43:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:43:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:43:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-06-27 18:43:19,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 18:43:19,790 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 163 flow. Second operand 5 states and 88 transitions. [2024-06-27 18:43:19,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 293 flow [2024-06-27 18:43:19,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 276 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:19,792 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 178 flow [2024-06-27 18:43:19,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 18:43:19,793 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 18:43:19,793 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 178 flow [2024-06-27 18:43:19,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 18:43:19,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:19,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:43:19,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:19,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash -942820249, now seen corresponding path program 1 times [2024-06-27 18:43:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986007685] [2024-06-27 18:43:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:19,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:21,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:21,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986007685] [2024-06-27 18:43:21,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986007685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:21,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:21,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:21,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002575810] [2024-06-27 18:43:21,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:21,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:21,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:21,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:21,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:21,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:43:21,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:21,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:21,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:43:21,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:21,402 INFO L124 PetriNetUnfolderBase]: 427/867 cut-off events. [2024-06-27 18:43:21,402 INFO L125 PetriNetUnfolderBase]: For 811/811 co-relation queries the response was YES. [2024-06-27 18:43:21,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 867 events. 427/867 cut-off events. For 811/811 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4642 event pairs, 72 based on Foata normal form. 4/834 useless extension candidates. Maximal degree in co-relation 2128. Up to 618 conditions per place. [2024-06-27 18:43:21,406 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 61 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-06-27 18:43:21,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 434 flow [2024-06-27 18:43:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 18:43:21,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709459459459459 [2024-06-27 18:43:21,408 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 178 flow. Second operand 8 states and 169 transitions. [2024-06-27 18:43:21,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 434 flow [2024-06-27 18:43:21,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 85 transitions, 420 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:21,410 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 218 flow [2024-06-27 18:43:21,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-06-27 18:43:21,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2024-06-27 18:43:21,425 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 218 flow [2024-06-27 18:43:21,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:21,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:21,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:21,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:43:21,425 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:21,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1931657930, now seen corresponding path program 1 times [2024-06-27 18:43:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:21,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724799051] [2024-06-27 18:43:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:21,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:21,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:21,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724799051] [2024-06-27 18:43:21,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724799051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:21,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:21,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:43:21,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364312504] [2024-06-27 18:43:21,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:21,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:43:21,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:21,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:43:21,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:43:21,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:21,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:21,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:21,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:21,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:22,200 INFO L124 PetriNetUnfolderBase]: 553/1064 cut-off events. [2024-06-27 18:43:22,200 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-06-27 18:43:22,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2851 conditions, 1064 events. 553/1064 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5670 event pairs, 159 based on Foata normal form. 3/1031 useless extension candidates. Maximal degree in co-relation 2829. Up to 866 conditions per place. [2024-06-27 18:43:22,204 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 51 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:43:22,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 392 flow [2024-06-27 18:43:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:43:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:43:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 18:43:22,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:43:22,206 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 218 flow. Second operand 6 states and 105 transitions. [2024-06-27 18:43:22,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 392 flow [2024-06-27 18:43:22,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 366 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:22,210 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 229 flow [2024-06-27 18:43:22,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-27 18:43:22,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-27 18:43:22,212 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 229 flow [2024-06-27 18:43:22,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:22,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:22,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:22,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:43:22,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:22,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:22,213 INFO L85 PathProgramCache]: Analyzing trace with hash -277824696, now seen corresponding path program 1 times [2024-06-27 18:43:22,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:22,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135715483] [2024-06-27 18:43:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135715483] [2024-06-27 18:43:22,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135715483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:22,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:22,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:43:22,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046035793] [2024-06-27 18:43:22,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:22,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:43:22,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:22,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:43:22,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:43:22,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:22,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:22,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:22,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:22,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:22,945 INFO L124 PetriNetUnfolderBase]: 567/1066 cut-off events. [2024-06-27 18:43:22,946 INFO L125 PetriNetUnfolderBase]: For 1370/1370 co-relation queries the response was YES. [2024-06-27 18:43:22,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2970 conditions, 1066 events. 567/1066 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5573 event pairs, 128 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 2946. Up to 891 conditions per place. [2024-06-27 18:43:22,951 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 56 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-27 18:43:22,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 460 flow [2024-06-27 18:43:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:43:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:43:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-27 18:43:22,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:43:22,952 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 229 flow. Second operand 6 states and 108 transitions. [2024-06-27 18:43:22,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 460 flow [2024-06-27 18:43:22,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 436 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:22,955 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 285 flow [2024-06-27 18:43:22,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-27 18:43:22,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-27 18:43:22,956 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 285 flow [2024-06-27 18:43:22,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:22,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:22,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:22,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:43:22,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:22,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash 281205508, now seen corresponding path program 2 times [2024-06-27 18:43:22,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:22,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674065834] [2024-06-27 18:43:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:22,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:23,377 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 18:43:23,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:23,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674065834] [2024-06-27 18:43:23,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674065834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:23,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:23,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:43:23,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831840682] [2024-06-27 18:43:23,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:23,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:43:23,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:23,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:43:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:43:23,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:23,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:23,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:23,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:23,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:23,693 INFO L124 PetriNetUnfolderBase]: 565/1090 cut-off events. [2024-06-27 18:43:23,694 INFO L125 PetriNetUnfolderBase]: For 1739/1739 co-relation queries the response was YES. [2024-06-27 18:43:23,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 1090 events. 565/1090 cut-off events. For 1739/1739 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5830 event pairs, 169 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 3128. Up to 915 conditions per place. [2024-06-27 18:43:23,699 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 53 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-27 18:43:23,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 445 flow [2024-06-27 18:43:23,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:43:23,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:43:23,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-27 18:43:23,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-27 18:43:23,700 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 285 flow. Second operand 6 states and 101 transitions. [2024-06-27 18:43:23,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 445 flow [2024-06-27 18:43:23,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 437 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:43:23,703 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 302 flow [2024-06-27 18:43:23,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-27 18:43:23,705 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-27 18:43:23,705 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 302 flow [2024-06-27 18:43:23,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:23,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:23,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:23,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:43:23,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:23,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:23,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1987785867, now seen corresponding path program 1 times [2024-06-27 18:43:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:23,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877684470] [2024-06-27 18:43:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:23,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:24,362 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 18:43:24,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877684470] [2024-06-27 18:43:24,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877684470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:24,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:24,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898212378] [2024-06-27 18:43:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:24,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:24,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:24,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:24,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 302 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:24,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:24,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:24,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:24,664 INFO L124 PetriNetUnfolderBase]: 579/1089 cut-off events. [2024-06-27 18:43:24,665 INFO L125 PetriNetUnfolderBase]: For 2118/2118 co-relation queries the response was YES. [2024-06-27 18:43:24,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3268 conditions, 1089 events. 579/1089 cut-off events. For 2118/2118 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5754 event pairs, 127 based on Foata normal form. 1/1052 useless extension candidates. Maximal degree in co-relation 3239. Up to 865 conditions per place. [2024-06-27 18:43:24,670 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 63 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-06-27 18:43:24,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 574 flow [2024-06-27 18:43:24,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:24,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 18:43:24,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 18:43:24,672 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 302 flow. Second operand 7 states and 128 transitions. [2024-06-27 18:43:24,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 574 flow [2024-06-27 18:43:24,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 88 transitions, 545 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:24,677 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 338 flow [2024-06-27 18:43:24,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-27 18:43:24,678 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-27 18:43:24,679 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 338 flow [2024-06-27 18:43:24,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:24,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:24,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:24,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:43:24,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:24,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1987636137, now seen corresponding path program 2 times [2024-06-27 18:43:24,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:24,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188476529] [2024-06-27 18:43:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:24,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:25,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:25,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188476529] [2024-06-27 18:43:25,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188476529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:25,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:25,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:25,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688104996] [2024-06-27 18:43:25,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:25,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:25,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:25,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:25,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:25,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:25,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:25,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:25,761 INFO L124 PetriNetUnfolderBase]: 590/1105 cut-off events. [2024-06-27 18:43:25,761 INFO L125 PetriNetUnfolderBase]: For 2539/2539 co-relation queries the response was YES. [2024-06-27 18:43:25,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 1105 events. 590/1105 cut-off events. For 2539/2539 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5829 event pairs, 128 based on Foata normal form. 1/1068 useless extension candidates. Maximal degree in co-relation 3472. Up to 917 conditions per place. [2024-06-27 18:43:25,767 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 64 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-27 18:43:25,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 86 transitions, 574 flow [2024-06-27 18:43:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 18:43:25,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-27 18:43:25,771 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 338 flow. Second operand 7 states and 123 transitions. [2024-06-27 18:43:25,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 86 transitions, 574 flow [2024-06-27 18:43:25,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 547 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:25,776 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 364 flow [2024-06-27 18:43:25,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2024-06-27 18:43:25,776 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 18:43:25,776 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 364 flow [2024-06-27 18:43:25,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:25,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:25,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:25,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:43:25,777 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:25,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:25,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1987635920, now seen corresponding path program 1 times [2024-06-27 18:43:25,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:25,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197741361] [2024-06-27 18:43:25,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:25,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:26,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:26,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197741361] [2024-06-27 18:43:26,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197741361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:26,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:26,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353157807] [2024-06-27 18:43:26,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:26,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:26,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:26,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:26,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:26,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:26,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:26,632 INFO L124 PetriNetUnfolderBase]: 652/1217 cut-off events. [2024-06-27 18:43:26,632 INFO L125 PetriNetUnfolderBase]: For 3144/3144 co-relation queries the response was YES. [2024-06-27 18:43:26,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3872 conditions, 1217 events. 652/1217 cut-off events. For 3144/3144 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6525 event pairs, 141 based on Foata normal form. 3/1177 useless extension candidates. Maximal degree in co-relation 3841. Up to 942 conditions per place. [2024-06-27 18:43:26,639 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 73 selfloop transitions, 18 changer transitions 0/98 dead transitions. [2024-06-27 18:43:26,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 672 flow [2024-06-27 18:43:26,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 18:43:26,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-06-27 18:43:26,640 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 364 flow. Second operand 7 states and 130 transitions. [2024-06-27 18:43:26,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 672 flow [2024-06-27 18:43:26,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 98 transitions, 641 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:26,646 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 424 flow [2024-06-27 18:43:26,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-06-27 18:43:26,647 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-27 18:43:26,647 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 424 flow [2024-06-27 18:43:26,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:26,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:26,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:26,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:43:26,648 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:26,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash 127732938, now seen corresponding path program 2 times [2024-06-27 18:43:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:26,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622158451] [2024-06-27 18:43:26,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:26,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:27,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:27,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622158451] [2024-06-27 18:43:27,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622158451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:27,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:27,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:27,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346566326] [2024-06-27 18:43:27,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:27,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:27,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:27,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:27,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:27,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 424 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:27,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:27,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:27,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:27,489 INFO L124 PetriNetUnfolderBase]: 685/1316 cut-off events. [2024-06-27 18:43:27,489 INFO L125 PetriNetUnfolderBase]: For 4098/4098 co-relation queries the response was YES. [2024-06-27 18:43:27,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4419 conditions, 1316 events. 685/1316 cut-off events. For 4098/4098 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7327 event pairs, 192 based on Foata normal form. 3/1272 useless extension candidates. Maximal degree in co-relation 4386. Up to 1072 conditions per place. [2024-06-27 18:43:27,497 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 70 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 18:43:27,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 652 flow [2024-06-27 18:43:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 18:43:27,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-06-27 18:43:27,498 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 424 flow. Second operand 7 states and 118 transitions. [2024-06-27 18:43:27,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 652 flow [2024-06-27 18:43:27,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 90 transitions, 641 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:27,503 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 462 flow [2024-06-27 18:43:27,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=462, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2024-06-27 18:43:27,504 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-27 18:43:27,504 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 462 flow [2024-06-27 18:43:27,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:27,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:27,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:27,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:43:27,505 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:27,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:27,505 INFO L85 PathProgramCache]: Analyzing trace with hash -897671329, now seen corresponding path program 3 times [2024-06-27 18:43:27,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:27,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329988709] [2024-06-27 18:43:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:27,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:28,122 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 18:43:28,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:28,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329988709] [2024-06-27 18:43:28,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329988709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:28,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:28,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827726688] [2024-06-27 18:43:28,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:28,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:28,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:28,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:28,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:28,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 462 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:28,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:28,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:28,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:28,455 INFO L124 PetriNetUnfolderBase]: 683/1309 cut-off events. [2024-06-27 18:43:28,455 INFO L125 PetriNetUnfolderBase]: For 4468/4468 co-relation queries the response was YES. [2024-06-27 18:43:28,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4491 conditions, 1309 events. 683/1309 cut-off events. For 4468/4468 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7269 event pairs, 188 based on Foata normal form. 1/1264 useless extension candidates. Maximal degree in co-relation 4455. Up to 1087 conditions per place. [2024-06-27 18:43:28,463 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 71 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-27 18:43:28,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 680 flow [2024-06-27 18:43:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 18:43:28,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-27 18:43:28,465 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 462 flow. Second operand 7 states and 117 transitions. [2024-06-27 18:43:28,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 680 flow [2024-06-27 18:43:28,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 641 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:28,470 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 452 flow [2024-06-27 18:43:28,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-27 18:43:28,471 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-27 18:43:28,471 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 452 flow [2024-06-27 18:43:28,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:28,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:28,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:28,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:43:28,472 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:28,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1752383120, now seen corresponding path program 3 times [2024-06-27 18:43:28,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:28,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133842515] [2024-06-27 18:43:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:28,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133842515] [2024-06-27 18:43:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133842515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:29,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:29,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:29,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634198538] [2024-06-27 18:43:29,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:29,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:29,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:29,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:29,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 452 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:29,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:29,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:29,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:29,353 INFO L124 PetriNetUnfolderBase]: 677/1301 cut-off events. [2024-06-27 18:43:29,354 INFO L125 PetriNetUnfolderBase]: For 4711/4711 co-relation queries the response was YES. [2024-06-27 18:43:29,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4418 conditions, 1301 events. 677/1301 cut-off events. For 4711/4711 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7263 event pairs, 184 based on Foata normal form. 3/1257 useless extension candidates. Maximal degree in co-relation 4382. Up to 1018 conditions per place. [2024-06-27 18:43:29,366 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 71 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-27 18:43:29,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 690 flow [2024-06-27 18:43:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 18:43:29,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-27 18:43:29,368 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 452 flow. Second operand 7 states and 123 transitions. [2024-06-27 18:43:29,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 690 flow [2024-06-27 18:43:29,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 94 transitions, 649 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:29,374 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 448 flow [2024-06-27 18:43:29,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2024-06-27 18:43:29,374 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-27 18:43:29,374 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 448 flow [2024-06-27 18:43:29,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:29,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:29,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:29,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:43:29,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:29,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash -706295673, now seen corresponding path program 1 times [2024-06-27 18:43:29,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:29,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780975657] [2024-06-27 18:43:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:30,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:30,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780975657] [2024-06-27 18:43:30,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780975657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:30,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:30,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:30,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709979445] [2024-06-27 18:43:30,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:30,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:30,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:30,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:30,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:30,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:30,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:30,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:30,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:30,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:30,606 INFO L124 PetriNetUnfolderBase]: 699/1306 cut-off events. [2024-06-27 18:43:30,606 INFO L125 PetriNetUnfolderBase]: For 5209/5209 co-relation queries the response was YES. [2024-06-27 18:43:30,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 1306 events. 699/1306 cut-off events. For 5209/5209 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7127 event pairs, 139 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 4521. Up to 1045 conditions per place. [2024-06-27 18:43:30,613 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 88 selfloop transitions, 14 changer transitions 0/109 dead transitions. [2024-06-27 18:43:30,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 109 transitions, 770 flow [2024-06-27 18:43:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:43:30,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 18:43:30,614 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 448 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:43:30,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 109 transitions, 770 flow [2024-06-27 18:43:30,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 723 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:30,621 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 451 flow [2024-06-27 18:43:30,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=451, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-06-27 18:43:30,622 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-27 18:43:30,622 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 451 flow [2024-06-27 18:43:30,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:30,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:30,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:30,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:43:30,623 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:30,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash -706175703, now seen corresponding path program 2 times [2024-06-27 18:43:30,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:30,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44802931] [2024-06-27 18:43:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:31,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:31,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44802931] [2024-06-27 18:43:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44802931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:31,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:31,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:31,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810095063] [2024-06-27 18:43:31,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:31,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:31,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:31,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 451 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:31,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:31,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:31,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:31,746 INFO L124 PetriNetUnfolderBase]: 727/1312 cut-off events. [2024-06-27 18:43:31,747 INFO L125 PetriNetUnfolderBase]: For 5686/5686 co-relation queries the response was YES. [2024-06-27 18:43:31,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4757 conditions, 1312 events. 727/1312 cut-off events. For 5686/5686 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7070 event pairs, 135 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 4720. Up to 976 conditions per place. [2024-06-27 18:43:31,754 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 80 selfloop transitions, 26 changer transitions 0/113 dead transitions. [2024-06-27 18:43:31,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 833 flow [2024-06-27 18:43:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:43:31,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-06-27 18:43:31,755 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 451 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:43:31,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 833 flow [2024-06-27 18:43:31,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 801 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:31,761 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 512 flow [2024-06-27 18:43:31,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=512, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-27 18:43:31,762 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-27 18:43:31,762 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 512 flow [2024-06-27 18:43:31,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:31,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:31,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:31,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:43:31,763 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:31,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:31,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1491818691, now seen corresponding path program 1 times [2024-06-27 18:43:31,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:31,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220757335] [2024-06-27 18:43:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:31,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:32,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:32,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220757335] [2024-06-27 18:43:32,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220757335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:32,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:32,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:32,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594055258] [2024-06-27 18:43:32,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:32,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:32,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:32,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:32,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:32,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:32,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 512 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:32,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:32,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:32,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:32,922 INFO L124 PetriNetUnfolderBase]: 767/1413 cut-off events. [2024-06-27 18:43:32,923 INFO L125 PetriNetUnfolderBase]: For 6807/6807 co-relation queries the response was YES. [2024-06-27 18:43:32,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5167 conditions, 1413 events. 767/1413 cut-off events. For 6807/6807 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7933 event pairs, 153 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 5129. Up to 947 conditions per place. [2024-06-27 18:43:32,930 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 82 selfloop transitions, 29 changer transitions 0/118 dead transitions. [2024-06-27 18:43:32,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 118 transitions, 892 flow [2024-06-27 18:43:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:32,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:43:32,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 18:43:32,933 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 512 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:43:32,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 118 transitions, 892 flow [2024-06-27 18:43:32,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 856 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:32,941 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 582 flow [2024-06-27 18:43:32,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=582, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-06-27 18:43:32,942 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-27 18:43:32,942 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 582 flow [2024-06-27 18:43:32,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:32,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:32,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:43:32,942 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:32,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1487177061, now seen corresponding path program 2 times [2024-06-27 18:43:32,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:32,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581936353] [2024-06-27 18:43:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:33,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:33,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581936353] [2024-06-27 18:43:33,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581936353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:33,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:33,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:33,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835827443] [2024-06-27 18:43:33,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:33,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:33,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:33,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:33,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 582 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:33,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:33,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:33,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:34,043 INFO L124 PetriNetUnfolderBase]: 817/1469 cut-off events. [2024-06-27 18:43:34,044 INFO L125 PetriNetUnfolderBase]: For 8209/8209 co-relation queries the response was YES. [2024-06-27 18:43:34,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5903 conditions, 1469 events. 817/1469 cut-off events. For 8209/8209 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8124 event pairs, 151 based on Foata normal form. 1/1429 useless extension candidates. Maximal degree in co-relation 5862. Up to 1111 conditions per place. [2024-06-27 18:43:34,073 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 89 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-06-27 18:43:34,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 122 transitions, 993 flow [2024-06-27 18:43:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:43:34,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 18:43:34,076 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 582 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:43:34,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 122 transitions, 993 flow [2024-06-27 18:43:34,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 122 transitions, 962 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:34,095 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 658 flow [2024-06-27 18:43:34,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-06-27 18:43:34,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-06-27 18:43:34,096 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 658 flow [2024-06-27 18:43:34,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:34,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:34,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:34,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:43:34,096 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:34,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1487170551, now seen corresponding path program 3 times [2024-06-27 18:43:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:34,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25483473] [2024-06-27 18:43:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:34,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:34,740 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 18:43:34,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:34,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25483473] [2024-06-27 18:43:34,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25483473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:34,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:34,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:34,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093878803] [2024-06-27 18:43:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:34,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:34,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:34,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:34,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 658 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:34,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:34,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:34,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:35,164 INFO L124 PetriNetUnfolderBase]: 811/1466 cut-off events. [2024-06-27 18:43:35,165 INFO L125 PetriNetUnfolderBase]: For 8878/8878 co-relation queries the response was YES. [2024-06-27 18:43:35,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6088 conditions, 1466 events. 811/1466 cut-off events. For 8878/8878 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8148 event pairs, 153 based on Foata normal form. 3/1426 useless extension candidates. Maximal degree in co-relation 6044. Up to 1128 conditions per place. [2024-06-27 18:43:35,199 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 91 selfloop transitions, 23 changer transitions 0/121 dead transitions. [2024-06-27 18:43:35,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 121 transitions, 994 flow [2024-06-27 18:43:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:43:35,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:43:35,201 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 658 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:43:35,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 121 transitions, 994 flow [2024-06-27 18:43:35,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 966 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:35,211 INFO L231 Difference]: Finished difference. Result has 100 places, 87 transitions, 682 flow [2024-06-27 18:43:35,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=682, PETRI_PLACES=100, PETRI_TRANSITIONS=87} [2024-06-27 18:43:35,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-27 18:43:35,211 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 87 transitions, 682 flow [2024-06-27 18:43:35,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:35,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:35,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:35,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:43:35,211 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:35,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:35,212 INFO L85 PathProgramCache]: Analyzing trace with hash -701534073, now seen corresponding path program 3 times [2024-06-27 18:43:35,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:35,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812254145] [2024-06-27 18:43:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:35,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:35,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812254145] [2024-06-27 18:43:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812254145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:35,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:35,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:35,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357041662] [2024-06-27 18:43:35,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:35,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:35,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:35,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:35,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 87 transitions, 682 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:35,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:35,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:35,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:36,198 INFO L124 PetriNetUnfolderBase]: 833/1529 cut-off events. [2024-06-27 18:43:36,199 INFO L125 PetriNetUnfolderBase]: For 9655/9655 co-relation queries the response was YES. [2024-06-27 18:43:36,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1529 events. 833/1529 cut-off events. For 9655/9655 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8738 event pairs, 168 based on Foata normal form. 2/1479 useless extension candidates. Maximal degree in co-relation 6410. Up to 1272 conditions per place. [2024-06-27 18:43:36,207 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 95 selfloop transitions, 17 changer transitions 0/119 dead transitions. [2024-06-27 18:43:36,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 119 transitions, 1014 flow [2024-06-27 18:43:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:36,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:43:36,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:43:36,221 INFO L175 Difference]: Start difference. First operand has 100 places, 87 transitions, 682 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:43:36,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 119 transitions, 1014 flow [2024-06-27 18:43:36,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 119 transitions, 963 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:36,233 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 692 flow [2024-06-27 18:43:36,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=692, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-06-27 18:43:36,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-27 18:43:36,234 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 692 flow [2024-06-27 18:43:36,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:36,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:36,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:36,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:43:36,234 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:36,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash -335245393, now seen corresponding path program 4 times [2024-06-27 18:43:36,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:36,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159350171] [2024-06-27 18:43:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:36,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:36,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:36,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159350171] [2024-06-27 18:43:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159350171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:36,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:36,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:36,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585907454] [2024-06-27 18:43:36,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:36,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:36,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:36,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 692 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:36,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:36,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:36,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:37,318 INFO L124 PetriNetUnfolderBase]: 866/1634 cut-off events. [2024-06-27 18:43:37,319 INFO L125 PetriNetUnfolderBase]: For 10770/10770 co-relation queries the response was YES. [2024-06-27 18:43:37,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6723 conditions, 1634 events. 866/1634 cut-off events. For 10770/10770 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9630 event pairs, 230 based on Foata normal form. 3/1580 useless extension candidates. Maximal degree in co-relation 6676. Up to 1314 conditions per place. [2024-06-27 18:43:37,328 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 94 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-27 18:43:37,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 117 transitions, 1009 flow [2024-06-27 18:43:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:43:37,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:43:37,345 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 692 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:43:37,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 117 transitions, 1009 flow [2024-06-27 18:43:37,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 117 transitions, 968 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:37,358 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 722 flow [2024-06-27 18:43:37,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=722, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-06-27 18:43:37,358 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-27 18:43:37,358 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 722 flow [2024-06-27 18:43:37,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:37,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:37,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:37,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:43:37,359 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:37,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2048506183, now seen corresponding path program 1 times [2024-06-27 18:43:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980660466] [2024-06-27 18:43:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:37,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:37,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:37,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980660466] [2024-06-27 18:43:37,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980660466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:37,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:37,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:37,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331862218] [2024-06-27 18:43:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:37,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:37,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:37,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:37,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:38,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:38,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 722 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:38,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:38,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:38,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:38,498 INFO L124 PetriNetUnfolderBase]: 868/1641 cut-off events. [2024-06-27 18:43:38,499 INFO L125 PetriNetUnfolderBase]: For 11093/11093 co-relation queries the response was YES. [2024-06-27 18:43:38,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6760 conditions, 1641 events. 868/1641 cut-off events. For 11093/11093 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9691 event pairs, 229 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 6712. Up to 1350 conditions per place. [2024-06-27 18:43:38,507 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 96 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2024-06-27 18:43:38,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 119 transitions, 1032 flow [2024-06-27 18:43:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:38,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:43:38,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 18:43:38,509 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 722 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:43:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 119 transitions, 1032 flow [2024-06-27 18:43:38,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 119 transitions, 994 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:38,522 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 769 flow [2024-06-27 18:43:38,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=769, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2024-06-27 18:43:38,522 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-27 18:43:38,522 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 769 flow [2024-06-27 18:43:38,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:38,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:38,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:38,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:43:38,523 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:38,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash 325674521, now seen corresponding path program 5 times [2024-06-27 18:43:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:38,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737071789] [2024-06-27 18:43:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:39,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:39,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737071789] [2024-06-27 18:43:39,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737071789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:39,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:39,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092412681] [2024-06-27 18:43:39,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:39,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:39,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:39,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:39,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:39,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 769 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:39,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:39,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:39,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:39,693 INFO L124 PetriNetUnfolderBase]: 875/1641 cut-off events. [2024-06-27 18:43:39,694 INFO L125 PetriNetUnfolderBase]: For 11869/11869 co-relation queries the response was YES. [2024-06-27 18:43:39,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6927 conditions, 1641 events. 875/1641 cut-off events. For 11869/11869 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9684 event pairs, 212 based on Foata normal form. 3/1589 useless extension candidates. Maximal degree in co-relation 6877. Up to 1287 conditions per place. [2024-06-27 18:43:39,703 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 102 selfloop transitions, 19 changer transitions 0/128 dead transitions. [2024-06-27 18:43:39,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 128 transitions, 1129 flow [2024-06-27 18:43:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:43:39,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 18:43:39,704 INFO L175 Difference]: Start difference. First operand has 106 places, 97 transitions, 769 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:43:39,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 128 transitions, 1129 flow [2024-06-27 18:43:39,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 128 transitions, 1084 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:39,719 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 794 flow [2024-06-27 18:43:39,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=794, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2024-06-27 18:43:39,720 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-27 18:43:39,720 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 794 flow [2024-06-27 18:43:39,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:39,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:39,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:39,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:43:39,720 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:39,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash -2058006567, now seen corresponding path program 4 times [2024-06-27 18:43:39,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826924521] [2024-06-27 18:43:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:40,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:40,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826924521] [2024-06-27 18:43:40,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826924521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:40,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:40,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818558063] [2024-06-27 18:43:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:40,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:40,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:40,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:40,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 794 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:40,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:40,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:40,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:40,768 INFO L124 PetriNetUnfolderBase]: 871/1641 cut-off events. [2024-06-27 18:43:40,769 INFO L125 PetriNetUnfolderBase]: For 12073/12073 co-relation queries the response was YES. [2024-06-27 18:43:40,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6936 conditions, 1641 events. 871/1641 cut-off events. For 12073/12073 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9702 event pairs, 229 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 6885. Up to 1358 conditions per place. [2024-06-27 18:43:40,777 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 103 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-27 18:43:40,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 124 transitions, 1106 flow [2024-06-27 18:43:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:43:40,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:43:40,778 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 794 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:43:40,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 124 transitions, 1106 flow [2024-06-27 18:43:40,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 124 transitions, 1043 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:40,795 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 764 flow [2024-06-27 18:43:40,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2024-06-27 18:43:40,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-27 18:43:40,796 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 764 flow [2024-06-27 18:43:40,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:40,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:40,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:40,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:43:40,797 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:40,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2058006381, now seen corresponding path program 6 times [2024-06-27 18:43:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:40,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130628281] [2024-06-27 18:43:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:40,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:41,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:41,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130628281] [2024-06-27 18:43:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130628281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:41,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:41,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:41,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198941594] [2024-06-27 18:43:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:41,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:41,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:41,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:41,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:41,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:41,982 INFO L124 PetriNetUnfolderBase]: 869/1636 cut-off events. [2024-06-27 18:43:41,982 INFO L125 PetriNetUnfolderBase]: For 11796/11796 co-relation queries the response was YES. [2024-06-27 18:43:41,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 1636 events. 869/1636 cut-off events. For 11796/11796 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9703 event pairs, 209 based on Foata normal form. 1/1580 useless extension candidates. Maximal degree in co-relation 6699. Up to 1217 conditions per place. [2024-06-27 18:43:41,992 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 94 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-06-27 18:43:41,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 1088 flow [2024-06-27 18:43:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:43:41,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:43:41,993 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 764 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:43:41,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 1088 flow [2024-06-27 18:43:42,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 126 transitions, 1042 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:42,011 INFO L231 Difference]: Finished difference. Result has 111 places, 99 transitions, 773 flow [2024-06-27 18:43:42,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=773, PETRI_PLACES=111, PETRI_TRANSITIONS=99} [2024-06-27 18:43:42,012 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-27 18:43:42,012 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 99 transitions, 773 flow [2024-06-27 18:43:42,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:42,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:42,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:42,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:43:42,012 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:42,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2048494310, now seen corresponding path program 1 times [2024-06-27 18:43:42,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:42,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632332026] [2024-06-27 18:43:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:42,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:42,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:42,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632332026] [2024-06-27 18:43:42,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632332026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:42,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:42,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:42,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270116009] [2024-06-27 18:43:42,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:42,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:42,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:42,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:42,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 99 transitions, 773 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:42,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:42,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:42,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:43,475 INFO L124 PetriNetUnfolderBase]: 866/1670 cut-off events. [2024-06-27 18:43:43,475 INFO L125 PetriNetUnfolderBase]: For 12464/12464 co-relation queries the response was YES. [2024-06-27 18:43:43,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6816 conditions, 1670 events. 866/1670 cut-off events. For 12464/12464 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10119 event pairs, 220 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 6764. Up to 1331 conditions per place. [2024-06-27 18:43:43,486 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 101 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2024-06-27 18:43:43,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 127 transitions, 1091 flow [2024-06-27 18:43:43,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 18:43:43,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 18:43:43,505 INFO L175 Difference]: Start difference. First operand has 111 places, 99 transitions, 773 flow. Second operand 8 states and 135 transitions. [2024-06-27 18:43:43,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 127 transitions, 1091 flow [2024-06-27 18:43:43,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 127 transitions, 989 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:43,523 INFO L231 Difference]: Finished difference. Result has 112 places, 101 transitions, 738 flow [2024-06-27 18:43:43,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=738, PETRI_PLACES=112, PETRI_TRANSITIONS=101} [2024-06-27 18:43:43,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-27 18:43:43,523 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 101 transitions, 738 flow [2024-06-27 18:43:43,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:43,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:43,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:43:43,524 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:43,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:43,524 INFO L85 PathProgramCache]: Analyzing trace with hash -534292677, now seen corresponding path program 1 times [2024-06-27 18:43:43,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:43,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147707164] [2024-06-27 18:43:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:44,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147707164] [2024-06-27 18:43:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147707164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:44,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:44,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799114154] [2024-06-27 18:43:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:44,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:44,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:44,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:44,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 101 transitions, 738 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:44,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:44,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:44,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:44,739 INFO L124 PetriNetUnfolderBase]: 888/1636 cut-off events. [2024-06-27 18:43:44,739 INFO L125 PetriNetUnfolderBase]: For 12911/12911 co-relation queries the response was YES. [2024-06-27 18:43:44,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6669 conditions, 1636 events. 888/1636 cut-off events. For 12911/12911 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9474 event pairs, 177 based on Foata normal form. 2/1583 useless extension candidates. Maximal degree in co-relation 6616. Up to 1311 conditions per place. [2024-06-27 18:43:44,748 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 122 selfloop transitions, 16 changer transitions 0/145 dead transitions. [2024-06-27 18:43:44,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 145 transitions, 1168 flow [2024-06-27 18:43:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:43:44,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:43:44,752 INFO L175 Difference]: Start difference. First operand has 112 places, 101 transitions, 738 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:43:44,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 145 transitions, 1168 flow [2024-06-27 18:43:44,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 145 transitions, 1123 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:44,772 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 752 flow [2024-06-27 18:43:44,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=752, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2024-06-27 18:43:44,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-27 18:43:44,772 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 752 flow [2024-06-27 18:43:44,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:44,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:44,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:44,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:43:44,773 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:44,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:44,773 INFO L85 PathProgramCache]: Analyzing trace with hash 998261908, now seen corresponding path program 1 times [2024-06-27 18:43:44,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:44,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050391270] [2024-06-27 18:43:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:44,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:45,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:45,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050391270] [2024-06-27 18:43:45,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050391270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:45,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:45,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:45,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983764345] [2024-06-27 18:43:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:45,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:45,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:45,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:45,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:45,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 752 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:45,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:45,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:45,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:46,292 INFO L124 PetriNetUnfolderBase]: 936/1725 cut-off events. [2024-06-27 18:43:46,292 INFO L125 PetriNetUnfolderBase]: For 14705/14705 co-relation queries the response was YES. [2024-06-27 18:43:46,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7138 conditions, 1725 events. 936/1725 cut-off events. For 14705/14705 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10192 event pairs, 160 based on Foata normal form. 2/1665 useless extension candidates. Maximal degree in co-relation 7084. Up to 1090 conditions per place. [2024-06-27 18:43:46,301 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 104 selfloop transitions, 38 changer transitions 0/149 dead transitions. [2024-06-27 18:43:46,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 149 transitions, 1262 flow [2024-06-27 18:43:46,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:43:46,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 18:43:46,302 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 752 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:43:46,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 149 transitions, 1262 flow [2024-06-27 18:43:46,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 149 transitions, 1221 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:46,323 INFO L231 Difference]: Finished difference. Result has 118 places, 107 transitions, 828 flow [2024-06-27 18:43:46,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=828, PETRI_PLACES=118, PETRI_TRANSITIONS=107} [2024-06-27 18:43:46,325 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-27 18:43:46,325 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 107 transitions, 828 flow [2024-06-27 18:43:46,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:46,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:46,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:46,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:43:46,326 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:46,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1287074517, now seen corresponding path program 2 times [2024-06-27 18:43:46,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:46,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613533493] [2024-06-27 18:43:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:46,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613533493] [2024-06-27 18:43:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613533493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:47,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34801382] [2024-06-27 18:43:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:47,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:47,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:47,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 107 transitions, 828 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:47,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:47,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:47,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:47,605 INFO L124 PetriNetUnfolderBase]: 1042/1895 cut-off events. [2024-06-27 18:43:47,606 INFO L125 PetriNetUnfolderBase]: For 19161/19161 co-relation queries the response was YES. [2024-06-27 18:43:47,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8305 conditions, 1895 events. 1042/1895 cut-off events. For 19161/19161 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11231 event pairs, 165 based on Foata normal form. 2/1833 useless extension candidates. Maximal degree in co-relation 8250. Up to 955 conditions per place. [2024-06-27 18:43:47,616 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 105 selfloop transitions, 48 changer transitions 0/160 dead transitions. [2024-06-27 18:43:47,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 160 transitions, 1480 flow [2024-06-27 18:43:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:43:47,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 18:43:47,618 INFO L175 Difference]: Start difference. First operand has 118 places, 107 transitions, 828 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:43:47,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 160 transitions, 1480 flow [2024-06-27 18:43:47,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 160 transitions, 1436 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:47,644 INFO L231 Difference]: Finished difference. Result has 123 places, 115 transitions, 1006 flow [2024-06-27 18:43:47,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1006, PETRI_PLACES=123, PETRI_TRANSITIONS=115} [2024-06-27 18:43:47,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 18:43:47,644 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 115 transitions, 1006 flow [2024-06-27 18:43:47,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:47,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:47,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:47,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:43:47,645 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:47,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash -416609271, now seen corresponding path program 3 times [2024-06-27 18:43:47,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:47,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283080026] [2024-06-27 18:43:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:47,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283080026] [2024-06-27 18:43:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283080026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:48,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:48,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:48,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867033422] [2024-06-27 18:43:48,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:48,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:48,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:48,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:48,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:48,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:48,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 115 transitions, 1006 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:48,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:48,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:48,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:48,925 INFO L124 PetriNetUnfolderBase]: 1038/1811 cut-off events. [2024-06-27 18:43:48,925 INFO L125 PetriNetUnfolderBase]: For 20223/20223 co-relation queries the response was YES. [2024-06-27 18:43:48,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8689 conditions, 1811 events. 1038/1811 cut-off events. For 20223/20223 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10232 event pairs, 151 based on Foata normal form. 2/1775 useless extension candidates. Maximal degree in co-relation 8631. Up to 952 conditions per place. [2024-06-27 18:43:48,936 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 105 selfloop transitions, 47 changer transitions 0/159 dead transitions. [2024-06-27 18:43:48,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 159 transitions, 1510 flow [2024-06-27 18:43:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 18:43:48,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-27 18:43:48,937 INFO L175 Difference]: Start difference. First operand has 123 places, 115 transitions, 1006 flow. Second operand 9 states and 175 transitions. [2024-06-27 18:43:48,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 159 transitions, 1510 flow [2024-06-27 18:43:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 159 transitions, 1454 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:48,968 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 1049 flow [2024-06-27 18:43:48,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1049, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2024-06-27 18:43:48,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-27 18:43:48,968 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 1049 flow [2024-06-27 18:43:48,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:48,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:48,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:48,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:43:48,969 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:48,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354031, now seen corresponding path program 4 times [2024-06-27 18:43:48,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:48,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458163977] [2024-06-27 18:43:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:48,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:49,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:49,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458163977] [2024-06-27 18:43:49,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458163977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:49,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:49,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:49,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041861860] [2024-06-27 18:43:49,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:49,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:49,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:49,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:49,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:49,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:49,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:49,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:50,255 INFO L124 PetriNetUnfolderBase]: 1071/1931 cut-off events. [2024-06-27 18:43:50,255 INFO L125 PetriNetUnfolderBase]: For 22322/22322 co-relation queries the response was YES. [2024-06-27 18:43:50,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9143 conditions, 1931 events. 1071/1931 cut-off events. For 22322/22322 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11378 event pairs, 184 based on Foata normal form. 3/1871 useless extension candidates. Maximal degree in co-relation 9083. Up to 1492 conditions per place. [2024-06-27 18:43:50,266 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 124 selfloop transitions, 26 changer transitions 0/157 dead transitions. [2024-06-27 18:43:50,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 157 transitions, 1509 flow [2024-06-27 18:43:50,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:43:50,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:43:50,268 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 1049 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:43:50,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 157 transitions, 1509 flow [2024-06-27 18:43:50,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 157 transitions, 1399 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:50,297 INFO L231 Difference]: Finished difference. Result has 130 places, 118 transitions, 1037 flow [2024-06-27 18:43:50,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1037, PETRI_PLACES=130, PETRI_TRANSITIONS=118} [2024-06-27 18:43:50,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 18:43:50,299 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 118 transitions, 1037 flow [2024-06-27 18:43:50,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:50,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:50,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:43:50,299 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:50,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1142354248, now seen corresponding path program 2 times [2024-06-27 18:43:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:50,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065100251] [2024-06-27 18:43:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:51,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:51,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065100251] [2024-06-27 18:43:51,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065100251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:51,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:51,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:51,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36702701] [2024-06-27 18:43:51,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:51,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:51,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:51,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:51,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 118 transitions, 1037 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:51,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:51,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:51,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:51,997 INFO L124 PetriNetUnfolderBase]: 1093/1965 cut-off events. [2024-06-27 18:43:51,998 INFO L125 PetriNetUnfolderBase]: For 22584/22584 co-relation queries the response was YES. [2024-06-27 18:43:52,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9249 conditions, 1965 events. 1093/1965 cut-off events. For 22584/22584 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11637 event pairs, 194 based on Foata normal form. 2/1904 useless extension candidates. Maximal degree in co-relation 9188. Up to 1543 conditions per place. [2024-06-27 18:43:52,010 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 127 selfloop transitions, 25 changer transitions 0/159 dead transitions. [2024-06-27 18:43:52,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 159 transitions, 1485 flow [2024-06-27 18:43:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:52,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:43:52,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 18:43:52,012 INFO L175 Difference]: Start difference. First operand has 130 places, 118 transitions, 1037 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:43:52,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 159 transitions, 1485 flow [2024-06-27 18:43:52,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 159 transitions, 1421 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:52,048 INFO L231 Difference]: Finished difference. Result has 132 places, 120 transitions, 1050 flow [2024-06-27 18:43:52,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1050, PETRI_PLACES=132, PETRI_TRANSITIONS=120} [2024-06-27 18:43:52,048 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-27 18:43:52,048 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 1050 flow [2024-06-27 18:43:52,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:52,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:52,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:52,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:43:52,049 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:52,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash 252945165, now seen corresponding path program 5 times [2024-06-27 18:43:52,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:52,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329070912] [2024-06-27 18:43:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:52,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:52,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329070912] [2024-06-27 18:43:52,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329070912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:52,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:52,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707766889] [2024-06-27 18:43:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:52,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:52,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 120 transitions, 1050 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:52,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:52,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:52,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:53,467 INFO L124 PetriNetUnfolderBase]: 1117/1999 cut-off events. [2024-06-27 18:43:53,468 INFO L125 PetriNetUnfolderBase]: For 23932/23932 co-relation queries the response was YES. [2024-06-27 18:43:53,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9497 conditions, 1999 events. 1117/1999 cut-off events. For 23932/23932 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11801 event pairs, 182 based on Foata normal form. 1/1938 useless extension candidates. Maximal degree in co-relation 9435. Up to 1507 conditions per place. [2024-06-27 18:43:53,480 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 125 selfloop transitions, 33 changer transitions 0/165 dead transitions. [2024-06-27 18:43:53,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 165 transitions, 1605 flow [2024-06-27 18:43:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:53,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:43:53,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 18:43:53,493 INFO L175 Difference]: Start difference. First operand has 132 places, 120 transitions, 1050 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:43:53,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 165 transitions, 1605 flow [2024-06-27 18:43:53,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 165 transitions, 1548 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:53,531 INFO L231 Difference]: Finished difference. Result has 135 places, 125 transitions, 1126 flow [2024-06-27 18:43:53,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1126, PETRI_PLACES=135, PETRI_TRANSITIONS=125} [2024-06-27 18:43:53,532 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-06-27 18:43:53,532 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 125 transitions, 1126 flow [2024-06-27 18:43:53,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:53,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:53,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:53,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:43:53,533 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:53,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1292437114, now seen corresponding path program 3 times [2024-06-27 18:43:53,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:53,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896924196] [2024-06-27 18:43:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:53,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:54,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:54,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896924196] [2024-06-27 18:43:54,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896924196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:54,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:54,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:54,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313923187] [2024-06-27 18:43:54,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:54,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:54,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:54,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:54,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:54,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 125 transitions, 1126 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:54,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:54,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:54,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:54,933 INFO L124 PetriNetUnfolderBase]: 1139/2036 cut-off events. [2024-06-27 18:43:54,933 INFO L125 PetriNetUnfolderBase]: For 26088/26088 co-relation queries the response was YES. [2024-06-27 18:43:54,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9896 conditions, 2036 events. 1139/2036 cut-off events. For 26088/26088 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12074 event pairs, 193 based on Foata normal form. 2/1975 useless extension candidates. Maximal degree in co-relation 9832. Up to 1570 conditions per place. [2024-06-27 18:43:54,974 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 130 selfloop transitions, 29 changer transitions 0/166 dead transitions. [2024-06-27 18:43:54,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 166 transitions, 1592 flow [2024-06-27 18:43:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:43:54,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:43:54,975 INFO L175 Difference]: Start difference. First operand has 135 places, 125 transitions, 1126 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:43:54,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 166 transitions, 1592 flow [2024-06-27 18:43:55,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 166 transitions, 1544 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:55,015 INFO L231 Difference]: Finished difference. Result has 139 places, 127 transitions, 1167 flow [2024-06-27 18:43:55,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1167, PETRI_PLACES=139, PETRI_TRANSITIONS=127} [2024-06-27 18:43:55,016 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 98 predicate places. [2024-06-27 18:43:55,016 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 127 transitions, 1167 flow [2024-06-27 18:43:55,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:55,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:55,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:55,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:43:55,016 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:55,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:55,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1142152221, now seen corresponding path program 6 times [2024-06-27 18:43:55,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:55,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315188385] [2024-06-27 18:43:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:55,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:55,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315188385] [2024-06-27 18:43:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315188385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:55,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040354153] [2024-06-27 18:43:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:55,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:55,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:55,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 127 transitions, 1167 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:55,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:55,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:55,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:56,381 INFO L124 PetriNetUnfolderBase]: 1137/2036 cut-off events. [2024-06-27 18:43:56,382 INFO L125 PetriNetUnfolderBase]: For 26224/26224 co-relation queries the response was YES. [2024-06-27 18:43:56,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10028 conditions, 2036 events. 1137/2036 cut-off events. For 26224/26224 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12071 event pairs, 184 based on Foata normal form. 1/1973 useless extension candidates. Maximal degree in co-relation 9962. Up to 1539 conditions per place. [2024-06-27 18:43:56,395 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 126 selfloop transitions, 33 changer transitions 0/166 dead transitions. [2024-06-27 18:43:56,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 166 transitions, 1616 flow [2024-06-27 18:43:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:43:56,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-06-27 18:43:56,397 INFO L175 Difference]: Start difference. First operand has 139 places, 127 transitions, 1167 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:43:56,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 166 transitions, 1616 flow [2024-06-27 18:43:56,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 166 transitions, 1543 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:56,449 INFO L231 Difference]: Finished difference. Result has 141 places, 128 transitions, 1172 flow [2024-06-27 18:43:56,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1172, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2024-06-27 18:43:56,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2024-06-27 18:43:56,449 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 1172 flow [2024-06-27 18:43:56,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:56,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:56,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:43:56,450 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:56,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:56,450 INFO L85 PathProgramCache]: Analyzing trace with hash 486570675, now seen corresponding path program 7 times [2024-06-27 18:43:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638927124] [2024-06-27 18:43:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:56,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:57,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638927124] [2024-06-27 18:43:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638927124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:57,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:57,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276507949] [2024-06-27 18:43:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:57,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:57,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:57,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:57,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 1172 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:57,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:57,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:57,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:57,597 INFO L124 PetriNetUnfolderBase]: 1224/2244 cut-off events. [2024-06-27 18:43:57,598 INFO L125 PetriNetUnfolderBase]: For 32141/32141 co-relation queries the response was YES. [2024-06-27 18:43:57,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11122 conditions, 2244 events. 1224/2244 cut-off events. For 32141/32141 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13834 event pairs, 280 based on Foata normal form. 2/2172 useless extension candidates. Maximal degree in co-relation 11055. Up to 1583 conditions per place. [2024-06-27 18:43:57,612 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 134 selfloop transitions, 31 changer transitions 0/172 dead transitions. [2024-06-27 18:43:57,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 172 transitions, 1877 flow [2024-06-27 18:43:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:43:57,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 18:43:57,614 INFO L175 Difference]: Start difference. First operand has 141 places, 128 transitions, 1172 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:43:57,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 172 transitions, 1877 flow [2024-06-27 18:43:57,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 172 transitions, 1820 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:57,657 INFO L231 Difference]: Finished difference. Result has 145 places, 135 transitions, 1306 flow [2024-06-27 18:43:57,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1306, PETRI_PLACES=145, PETRI_TRANSITIONS=135} [2024-06-27 18:43:57,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 18:43:57,658 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 135 transitions, 1306 flow [2024-06-27 18:43:57,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:57,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:57,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:57,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:43:57,658 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:57,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2100393754, now seen corresponding path program 4 times [2024-06-27 18:43:57,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:57,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070136111] [2024-06-27 18:43:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:57,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:58,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:58,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070136111] [2024-06-27 18:43:58,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070136111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:58,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:58,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207346688] [2024-06-27 18:43:58,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:58,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:58,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:58,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 135 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:58,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:58,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:59,046 INFO L124 PetriNetUnfolderBase]: 1246/2274 cut-off events. [2024-06-27 18:43:59,046 INFO L125 PetriNetUnfolderBase]: For 34685/34685 co-relation queries the response was YES. [2024-06-27 18:43:59,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11510 conditions, 2274 events. 1246/2274 cut-off events. For 34685/34685 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13922 event pairs, 309 based on Foata normal form. 2/2206 useless extension candidates. Maximal degree in co-relation 11441. Up to 1838 conditions per place. [2024-06-27 18:43:59,065 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 144 selfloop transitions, 21 changer transitions 0/172 dead transitions. [2024-06-27 18:43:59,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 172 transitions, 1774 flow [2024-06-27 18:43:59,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:59,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:59,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:43:59,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:43:59,067 INFO L175 Difference]: Start difference. First operand has 145 places, 135 transitions, 1306 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:43:59,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 172 transitions, 1774 flow [2024-06-27 18:43:59,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 172 transitions, 1739 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:59,118 INFO L231 Difference]: Finished difference. Result has 150 places, 137 transitions, 1348 flow [2024-06-27 18:43:59,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1348, PETRI_PLACES=150, PETRI_TRANSITIONS=137} [2024-06-27 18:43:59,119 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-06-27 18:43:59,119 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 137 transitions, 1348 flow [2024-06-27 18:43:59,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:59,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:59,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:59,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:43:59,119 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:59,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash -413173450, now seen corresponding path program 5 times [2024-06-27 18:43:59,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:59,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437377673] [2024-06-27 18:43:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:59,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:59,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437377673] [2024-06-27 18:43:59,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437377673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:59,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:59,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:59,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612068702] [2024-06-27 18:43:59,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:59,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:59,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:59,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:59,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:59,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:43:59,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 137 transitions, 1348 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:59,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:59,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:43:59,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:00,458 INFO L124 PetriNetUnfolderBase]: 1268/2299 cut-off events. [2024-06-27 18:44:00,459 INFO L125 PetriNetUnfolderBase]: For 36356/36356 co-relation queries the response was YES. [2024-06-27 18:44:00,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11826 conditions, 2299 events. 1268/2299 cut-off events. For 36356/36356 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14058 event pairs, 301 based on Foata normal form. 2/2234 useless extension candidates. Maximal degree in co-relation 11755. Up to 1764 conditions per place. [2024-06-27 18:44:00,477 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 137 selfloop transitions, 29 changer transitions 0/173 dead transitions. [2024-06-27 18:44:00,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 173 transitions, 1890 flow [2024-06-27 18:44:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:44:00,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:44:00,478 INFO L175 Difference]: Start difference. First operand has 150 places, 137 transitions, 1348 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:44:00,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 173 transitions, 1890 flow [2024-06-27 18:44:00,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 173 transitions, 1833 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:00,544 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 1384 flow [2024-06-27 18:44:00,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1384, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2024-06-27 18:44:00,545 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 18:44:00,546 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 1384 flow [2024-06-27 18:44:00,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:00,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:00,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:00,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:44:00,546 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:00,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:00,547 INFO L85 PathProgramCache]: Analyzing trace with hash 626306905, now seen corresponding path program 8 times [2024-06-27 18:44:00,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:00,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300066151] [2024-06-27 18:44:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:00,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:01,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:01,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300066151] [2024-06-27 18:44:01,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300066151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:01,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:01,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:01,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709823845] [2024-06-27 18:44:01,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:01,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:01,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:01,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:01,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:01,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:01,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 1384 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:01,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:01,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:01,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:01,745 INFO L124 PetriNetUnfolderBase]: 1264/2301 cut-off events. [2024-06-27 18:44:01,745 INFO L125 PetriNetUnfolderBase]: For 36381/36381 co-relation queries the response was YES. [2024-06-27 18:44:01,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11780 conditions, 2301 events. 1264/2301 cut-off events. For 36381/36381 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14230 event pairs, 277 based on Foata normal form. 2/2232 useless extension candidates. Maximal degree in co-relation 11708. Up to 1648 conditions per place. [2024-06-27 18:44:01,762 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 135 selfloop transitions, 33 changer transitions 0/175 dead transitions. [2024-06-27 18:44:01,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 175 transitions, 1918 flow [2024-06-27 18:44:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:44:01,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:44:01,772 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 1384 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:44:01,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 175 transitions, 1918 flow [2024-06-27 18:44:01,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 175 transitions, 1816 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:01,831 INFO L231 Difference]: Finished difference. Result has 154 places, 139 transitions, 1353 flow [2024-06-27 18:44:01,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1353, PETRI_PLACES=154, PETRI_TRANSITIONS=139} [2024-06-27 18:44:01,831 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-27 18:44:01,831 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 139 transitions, 1353 flow [2024-06-27 18:44:01,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:01,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:01,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:01,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:44:01,832 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:01,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:01,833 INFO L85 PathProgramCache]: Analyzing trace with hash -412971857, now seen corresponding path program 9 times [2024-06-27 18:44:01,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:01,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619927260] [2024-06-27 18:44:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:01,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:02,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:02,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619927260] [2024-06-27 18:44:02,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619927260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:02,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:02,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:02,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069296948] [2024-06-27 18:44:02,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:02,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:02,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:02,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:02,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:02,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 139 transitions, 1353 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:02,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:02,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:02,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:03,153 INFO L124 PetriNetUnfolderBase]: 1330/2379 cut-off events. [2024-06-27 18:44:03,153 INFO L125 PetriNetUnfolderBase]: For 41368/41368 co-relation queries the response was YES. [2024-06-27 18:44:03,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 2379 events. 1330/2379 cut-off events. For 41368/41368 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14579 event pairs, 322 based on Foata normal form. 6/2322 useless extension candidates. Maximal degree in co-relation 12322. Up to 1912 conditions per place. [2024-06-27 18:44:03,170 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 149 selfloop transitions, 22 changer transitions 0/178 dead transitions. [2024-06-27 18:44:03,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 178 transitions, 1875 flow [2024-06-27 18:44:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:44:03,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 18:44:03,171 INFO L175 Difference]: Start difference. First operand has 154 places, 139 transitions, 1353 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:44:03,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 178 transitions, 1875 flow [2024-06-27 18:44:03,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 178 transitions, 1800 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:03,233 INFO L231 Difference]: Finished difference. Result has 156 places, 142 transitions, 1394 flow [2024-06-27 18:44:03,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1394, PETRI_PLACES=156, PETRI_TRANSITIONS=142} [2024-06-27 18:44:03,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-27 18:44:03,235 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 142 transitions, 1394 flow [2024-06-27 18:44:03,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:03,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:03,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:03,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:44:03,236 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:03,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:03,236 INFO L85 PathProgramCache]: Analyzing trace with hash -128765717, now seen corresponding path program 10 times [2024-06-27 18:44:03,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:03,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89661224] [2024-06-27 18:44:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:03,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89661224] [2024-06-27 18:44:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89661224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:03,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:03,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:03,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76995321] [2024-06-27 18:44:03,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:03,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:03,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:03,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:04,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:04,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 142 transitions, 1394 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:04,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:04,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:04,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:04,646 INFO L124 PetriNetUnfolderBase]: 1318/2373 cut-off events. [2024-06-27 18:44:04,647 INFO L125 PetriNetUnfolderBase]: For 38402/38402 co-relation queries the response was YES. [2024-06-27 18:44:04,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11995 conditions, 2373 events. 1318/2373 cut-off events. For 38402/38402 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14619 event pairs, 335 based on Foata normal form. 6/2313 useless extension candidates. Maximal degree in co-relation 11921. Up to 1936 conditions per place. [2024-06-27 18:44:04,664 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 148 selfloop transitions, 19 changer transitions 0/174 dead transitions. [2024-06-27 18:44:04,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 174 transitions, 1828 flow [2024-06-27 18:44:04,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:04,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:44:04,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:44:04,666 INFO L175 Difference]: Start difference. First operand has 156 places, 142 transitions, 1394 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:44:04,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 174 transitions, 1828 flow [2024-06-27 18:44:04,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 174 transitions, 1758 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:04,731 INFO L231 Difference]: Finished difference. Result has 158 places, 142 transitions, 1368 flow [2024-06-27 18:44:04,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1368, PETRI_PLACES=158, PETRI_TRANSITIONS=142} [2024-06-27 18:44:04,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-27 18:44:04,733 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 142 transitions, 1368 flow [2024-06-27 18:44:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:04,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:04,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:04,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:44:04,740 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:04,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash -118667560, now seen corresponding path program 6 times [2024-06-27 18:44:04,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:04,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742218598] [2024-06-27 18:44:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:05,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742218598] [2024-06-27 18:44:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742218598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:05,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:05,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:05,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104954482] [2024-06-27 18:44:05,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:05,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:05,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:05,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:05,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:05,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 142 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:05,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:05,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:05,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:06,124 INFO L124 PetriNetUnfolderBase]: 1320/2381 cut-off events. [2024-06-27 18:44:06,125 INFO L125 PetriNetUnfolderBase]: For 33894/33894 co-relation queries the response was YES. [2024-06-27 18:44:06,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11773 conditions, 2381 events. 1320/2381 cut-off events. For 33894/33894 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14714 event pairs, 354 based on Foata normal form. 2/2316 useless extension candidates. Maximal degree in co-relation 11698. Up to 2022 conditions per place. [2024-06-27 18:44:06,176 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 147 selfloop transitions, 18 changer transitions 0/172 dead transitions. [2024-06-27 18:44:06,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 172 transitions, 1792 flow [2024-06-27 18:44:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:44:06,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:44:06,177 INFO L175 Difference]: Start difference. First operand has 158 places, 142 transitions, 1368 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:44:06,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 172 transitions, 1792 flow [2024-06-27 18:44:06,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 172 transitions, 1720 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:06,240 INFO L231 Difference]: Finished difference. Result has 158 places, 144 transitions, 1361 flow [2024-06-27 18:44:06,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1361, PETRI_PLACES=158, PETRI_TRANSITIONS=144} [2024-06-27 18:44:06,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-27 18:44:06,241 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 144 transitions, 1361 flow [2024-06-27 18:44:06,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:06,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:06,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:44:06,241 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:06,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -128765500, now seen corresponding path program 7 times [2024-06-27 18:44:06,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:06,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475704009] [2024-06-27 18:44:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:06,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:07,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:07,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475704009] [2024-06-27 18:44:07,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475704009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:07,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:07,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670120577] [2024-06-27 18:44:07,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:07,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:07,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:07,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 144 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:07,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:07,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:07,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:07,664 INFO L124 PetriNetUnfolderBase]: 1316/2396 cut-off events. [2024-06-27 18:44:07,664 INFO L125 PetriNetUnfolderBase]: For 32390/32390 co-relation queries the response was YES. [2024-06-27 18:44:07,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11605 conditions, 2396 events. 1316/2396 cut-off events. For 32390/32390 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14902 event pairs, 349 based on Foata normal form. 2/2325 useless extension candidates. Maximal degree in co-relation 11529. Up to 1990 conditions per place. [2024-06-27 18:44:07,681 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 150 selfloop transitions, 18 changer transitions 0/175 dead transitions. [2024-06-27 18:44:07,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 175 transitions, 1789 flow [2024-06-27 18:44:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:07,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:44:07,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:44:07,682 INFO L175 Difference]: Start difference. First operand has 158 places, 144 transitions, 1361 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:44:07,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 175 transitions, 1789 flow [2024-06-27 18:44:07,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 175 transitions, 1728 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:07,736 INFO L231 Difference]: Finished difference. Result has 160 places, 144 transitions, 1341 flow [2024-06-27 18:44:07,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1341, PETRI_PLACES=160, PETRI_TRANSITIONS=144} [2024-06-27 18:44:07,736 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-27 18:44:07,736 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 144 transitions, 1341 flow [2024-06-27 18:44:07,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:07,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:07,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:07,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:44:07,738 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:07,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash 520854174, now seen corresponding path program 1 times [2024-06-27 18:44:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:07,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420206573] [2024-06-27 18:44:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:07,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:07,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420206573] [2024-06-27 18:44:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420206573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:07,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:07,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:44:07,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293720911] [2024-06-27 18:44:07,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:07,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:44:07,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:44:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:44:07,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:44:07,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 144 transitions, 1341 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:07,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:07,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:44:07,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:08,291 INFO L124 PetriNetUnfolderBase]: 1982/3466 cut-off events. [2024-06-27 18:44:08,292 INFO L125 PetriNetUnfolderBase]: For 25262/25269 co-relation queries the response was YES. [2024-06-27 18:44:08,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15725 conditions, 3466 events. 1982/3466 cut-off events. For 25262/25269 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 22148 event pairs, 536 based on Foata normal form. 3/3319 useless extension candidates. Maximal degree in co-relation 15649. Up to 1924 conditions per place. [2024-06-27 18:44:08,316 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 158 selfloop transitions, 13 changer transitions 134/355 dead transitions. [2024-06-27 18:44:08,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 355 transitions, 3836 flow [2024-06-27 18:44:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 18:44:08,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2024-06-27 18:44:08,318 INFO L175 Difference]: Start difference. First operand has 160 places, 144 transitions, 1341 flow. Second operand 8 states and 174 transitions. [2024-06-27 18:44:08,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 355 transitions, 3836 flow [2024-06-27 18:44:08,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 355 transitions, 3677 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:08,405 INFO L231 Difference]: Finished difference. Result has 164 places, 149 transitions, 1361 flow [2024-06-27 18:44:08,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1361, PETRI_PLACES=164, PETRI_TRANSITIONS=149} [2024-06-27 18:44:08,405 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-27 18:44:08,406 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 149 transitions, 1361 flow [2024-06-27 18:44:08,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:08,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:08,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:08,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:44:08,406 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:08,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash -381929478, now seen corresponding path program 1 times [2024-06-27 18:44:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721744393] [2024-06-27 18:44:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:08,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:09,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:09,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721744393] [2024-06-27 18:44:09,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721744393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:09,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:09,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:09,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394168296] [2024-06-27 18:44:09,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:09,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:09,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 149 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:09,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:09,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:09,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:09,980 INFO L124 PetriNetUnfolderBase]: 1478/2780 cut-off events. [2024-06-27 18:44:09,981 INFO L125 PetriNetUnfolderBase]: For 38556/38565 co-relation queries the response was YES. [2024-06-27 18:44:09,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13779 conditions, 2780 events. 1478/2780 cut-off events. For 38556/38565 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 18155 event pairs, 388 based on Foata normal form. 7/2762 useless extension candidates. Maximal degree in co-relation 13698. Up to 2198 conditions per place. [2024-06-27 18:44:10,003 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 182 selfloop transitions, 22 changer transitions 3/215 dead transitions. [2024-06-27 18:44:10,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 215 transitions, 2207 flow [2024-06-27 18:44:10,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:10,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:44:10,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:44:10,004 INFO L175 Difference]: Start difference. First operand has 164 places, 149 transitions, 1361 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:44:10,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 215 transitions, 2207 flow [2024-06-27 18:44:10,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 215 transitions, 2189 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 18:44:10,092 INFO L231 Difference]: Finished difference. Result has 176 places, 164 transitions, 1597 flow [2024-06-27 18:44:10,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1597, PETRI_PLACES=176, PETRI_TRANSITIONS=164} [2024-06-27 18:44:10,093 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-27 18:44:10,093 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 164 transitions, 1597 flow [2024-06-27 18:44:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:10,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:10,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:10,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:44:10,094 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:10,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash -148137530, now seen corresponding path program 2 times [2024-06-27 18:44:10,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:10,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512686235] [2024-06-27 18:44:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:10,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:11,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512686235] [2024-06-27 18:44:11,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512686235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:11,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:11,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:11,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911156536] [2024-06-27 18:44:11,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:11,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:11,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:11,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:11,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:11,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 164 transitions, 1597 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:11,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:11,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:11,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:12,190 INFO L124 PetriNetUnfolderBase]: 1535/2787 cut-off events. [2024-06-27 18:44:12,191 INFO L125 PetriNetUnfolderBase]: For 44291/44298 co-relation queries the response was YES. [2024-06-27 18:44:12,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14659 conditions, 2787 events. 1535/2787 cut-off events. For 44291/44298 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17469 event pairs, 272 based on Foata normal form. 7/2764 useless extension candidates. Maximal degree in co-relation 14571. Up to 2124 conditions per place. [2024-06-27 18:44:12,216 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 182 selfloop transitions, 33 changer transitions 0/223 dead transitions. [2024-06-27 18:44:12,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 223 transitions, 2406 flow [2024-06-27 18:44:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:44:12,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 18:44:12,218 INFO L175 Difference]: Start difference. First operand has 176 places, 164 transitions, 1597 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:44:12,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 223 transitions, 2406 flow [2024-06-27 18:44:12,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 223 transitions, 2350 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:12,322 INFO L231 Difference]: Finished difference. Result has 183 places, 169 transitions, 1689 flow [2024-06-27 18:44:12,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1689, PETRI_PLACES=183, PETRI_TRANSITIONS=169} [2024-06-27 18:44:12,323 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-27 18:44:12,323 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 169 transitions, 1689 flow [2024-06-27 18:44:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:12,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:12,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:44:12,323 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:12,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 763076802, now seen corresponding path program 3 times [2024-06-27 18:44:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915524801] [2024-06-27 18:44:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:13,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:13,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915524801] [2024-06-27 18:44:13,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915524801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:13,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:13,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:13,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321340405] [2024-06-27 18:44:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:13,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:13,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:13,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:13,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 169 transitions, 1689 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:13,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:13,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:13,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:14,311 INFO L124 PetriNetUnfolderBase]: 1597/2885 cut-off events. [2024-06-27 18:44:14,312 INFO L125 PetriNetUnfolderBase]: For 49100/49107 co-relation queries the response was YES. [2024-06-27 18:44:14,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15550 conditions, 2885 events. 1597/2885 cut-off events. For 49100/49107 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 18170 event pairs, 319 based on Foata normal form. 9/2856 useless extension candidates. Maximal degree in co-relation 15461. Up to 2334 conditions per place. [2024-06-27 18:44:14,338 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 184 selfloop transitions, 35 changer transitions 0/227 dead transitions. [2024-06-27 18:44:14,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 227 transitions, 2431 flow [2024-06-27 18:44:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 18:44:14,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 18:44:14,340 INFO L175 Difference]: Start difference. First operand has 183 places, 169 transitions, 1689 flow. Second operand 11 states and 194 transitions. [2024-06-27 18:44:14,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 227 transitions, 2431 flow [2024-06-27 18:44:14,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 227 transitions, 2372 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:14,458 INFO L231 Difference]: Finished difference. Result has 188 places, 175 transitions, 1794 flow [2024-06-27 18:44:14,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1794, PETRI_PLACES=188, PETRI_TRANSITIONS=175} [2024-06-27 18:44:14,458 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-27 18:44:14,459 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 175 transitions, 1794 flow [2024-06-27 18:44:14,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:14,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:14,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:14,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:44:14,459 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:14,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:14,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1535213272, now seen corresponding path program 1 times [2024-06-27 18:44:14,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:14,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121227134] [2024-06-27 18:44:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:15,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121227134] [2024-06-27 18:44:15,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121227134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:15,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:15,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247213506] [2024-06-27 18:44:15,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:15,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:15,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:15,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:15,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:15,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:15,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 175 transitions, 1794 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:15,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:15,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:15,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:16,043 INFO L124 PetriNetUnfolderBase]: 1667/3005 cut-off events. [2024-06-27 18:44:16,043 INFO L125 PetriNetUnfolderBase]: For 51066/51073 co-relation queries the response was YES. [2024-06-27 18:44:16,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16221 conditions, 3005 events. 1667/3005 cut-off events. For 51066/51073 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 19123 event pairs, 333 based on Foata normal form. 9/2976 useless extension candidates. Maximal degree in co-relation 16131. Up to 2359 conditions per place. [2024-06-27 18:44:16,066 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 181 selfloop transitions, 38 changer transitions 0/227 dead transitions. [2024-06-27 18:44:16,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 227 transitions, 2588 flow [2024-06-27 18:44:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:16,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:44:16,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 18:44:16,069 INFO L175 Difference]: Start difference. First operand has 188 places, 175 transitions, 1794 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:44:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 227 transitions, 2588 flow [2024-06-27 18:44:16,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 227 transitions, 2518 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:16,179 INFO L231 Difference]: Finished difference. Result has 190 places, 180 transitions, 1878 flow [2024-06-27 18:44:16,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1878, PETRI_PLACES=190, PETRI_TRANSITIONS=180} [2024-06-27 18:44:16,179 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-27 18:44:16,180 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 180 transitions, 1878 flow [2024-06-27 18:44:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:16,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:16,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:16,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:44:16,180 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:16,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:16,181 INFO L85 PathProgramCache]: Analyzing trace with hash 765873312, now seen corresponding path program 4 times [2024-06-27 18:44:16,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:16,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545128677] [2024-06-27 18:44:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:16,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545128677] [2024-06-27 18:44:17,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545128677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:17,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:17,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:17,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671935020] [2024-06-27 18:44:17,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:17,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:17,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:17,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:17,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:17,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 180 transitions, 1878 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:17,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:17,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:17,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:17,986 INFO L124 PetriNetUnfolderBase]: 1661/2995 cut-off events. [2024-06-27 18:44:17,986 INFO L125 PetriNetUnfolderBase]: For 49198/49205 co-relation queries the response was YES. [2024-06-27 18:44:18,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16234 conditions, 2995 events. 1661/2995 cut-off events. For 49198/49205 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 19040 event pairs, 338 based on Foata normal form. 9/2966 useless extension candidates. Maximal degree in co-relation 16143. Up to 2388 conditions per place. [2024-06-27 18:44:18,012 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 176 selfloop transitions, 35 changer transitions 0/219 dead transitions. [2024-06-27 18:44:18,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 219 transitions, 2462 flow [2024-06-27 18:44:18,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:18,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:44:18,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 18:44:18,013 INFO L175 Difference]: Start difference. First operand has 190 places, 180 transitions, 1878 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:44:18,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 219 transitions, 2462 flow [2024-06-27 18:44:18,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 219 transitions, 2370 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:18,152 INFO L231 Difference]: Finished difference. Result has 193 places, 180 transitions, 1866 flow [2024-06-27 18:44:18,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1866, PETRI_PLACES=193, PETRI_TRANSITIONS=180} [2024-06-27 18:44:18,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-27 18:44:18,152 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 180 transitions, 1866 flow [2024-06-27 18:44:18,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:18,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:18,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:18,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:44:18,153 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:18,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:18,153 INFO L85 PathProgramCache]: Analyzing trace with hash 881342422, now seen corresponding path program 2 times [2024-06-27 18:44:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:18,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625343818] [2024-06-27 18:44:18,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:18,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:19,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:19,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:19,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625343818] [2024-06-27 18:44:19,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625343818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:19,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:19,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:19,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761681278] [2024-06-27 18:44:19,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:19,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:19,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:19,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:19,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:19,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:19,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 180 transitions, 1866 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:19,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:19,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:19,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:19,981 INFO L124 PetriNetUnfolderBase]: 1755/3020 cut-off events. [2024-06-27 18:44:19,981 INFO L125 PetriNetUnfolderBase]: For 55990/56029 co-relation queries the response was YES. [2024-06-27 18:44:19,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17057 conditions, 3020 events. 1755/3020 cut-off events. For 55990/56029 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18563 event pairs, 199 based on Foata normal form. 29/3004 useless extension candidates. Maximal degree in co-relation 16964. Up to 1790 conditions per place. [2024-06-27 18:44:20,009 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 182 selfloop transitions, 60 changer transitions 0/250 dead transitions. [2024-06-27 18:44:20,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 250 transitions, 3082 flow [2024-06-27 18:44:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 18:44:20,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216216216216216 [2024-06-27 18:44:20,011 INFO L175 Difference]: Start difference. First operand has 193 places, 180 transitions, 1866 flow. Second operand 10 states and 193 transitions. [2024-06-27 18:44:20,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 250 transitions, 3082 flow [2024-06-27 18:44:20,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 250 transitions, 3000 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:20,175 INFO L231 Difference]: Finished difference. Result has 199 places, 194 transitions, 2158 flow [2024-06-27 18:44:20,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2158, PETRI_PLACES=199, PETRI_TRANSITIONS=194} [2024-06-27 18:44:20,176 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-06-27 18:44:20,176 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 194 transitions, 2158 flow [2024-06-27 18:44:20,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:20,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:20,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:20,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:44:20,177 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:20,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1244611946, now seen corresponding path program 3 times [2024-06-27 18:44:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:20,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386825574] [2024-06-27 18:44:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:20,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:20,981 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 18:44:20,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:20,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386825574] [2024-06-27 18:44:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386825574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:20,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:20,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837765425] [2024-06-27 18:44:20,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:20,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:20,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:20,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:20,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:21,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:21,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 194 transitions, 2158 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:21,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:21,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:21,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:21,871 INFO L124 PetriNetUnfolderBase]: 1815/3138 cut-off events. [2024-06-27 18:44:21,871 INFO L125 PetriNetUnfolderBase]: For 63285/63324 co-relation queries the response was YES. [2024-06-27 18:44:21,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18604 conditions, 3138 events. 1815/3138 cut-off events. For 63285/63324 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19476 event pairs, 233 based on Foata normal form. 29/3122 useless extension candidates. Maximal degree in co-relation 18506. Up to 1339 conditions per place. [2024-06-27 18:44:21,899 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 151 selfloop transitions, 92 changer transitions 0/251 dead transitions. [2024-06-27 18:44:21,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 251 transitions, 3252 flow [2024-06-27 18:44:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:21,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 18:44:21,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324324324324324 [2024-06-27 18:44:21,900 INFO L175 Difference]: Start difference. First operand has 199 places, 194 transitions, 2158 flow. Second operand 10 states and 197 transitions. [2024-06-27 18:44:21,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 251 transitions, 3252 flow [2024-06-27 18:44:22,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 251 transitions, 3132 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:22,082 INFO L231 Difference]: Finished difference. Result has 207 places, 202 transitions, 2384 flow [2024-06-27 18:44:22,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2384, PETRI_PLACES=207, PETRI_TRANSITIONS=202} [2024-06-27 18:44:22,082 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-27 18:44:22,082 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 202 transitions, 2384 flow [2024-06-27 18:44:22,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:22,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:22,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:22,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:44:22,083 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:22,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash 881169442, now seen corresponding path program 4 times [2024-06-27 18:44:22,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:22,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532737114] [2024-06-27 18:44:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:22,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:22,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532737114] [2024-06-27 18:44:22,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532737114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:22,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:22,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:22,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637124798] [2024-06-27 18:44:22,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:22,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:22,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:22,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:22,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:23,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:23,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 202 transitions, 2384 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:23,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:23,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:23,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:23,852 INFO L124 PetriNetUnfolderBase]: 1811/3110 cut-off events. [2024-06-27 18:44:23,853 INFO L125 PetriNetUnfolderBase]: For 63251/63290 co-relation queries the response was YES. [2024-06-27 18:44:23,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18845 conditions, 3110 events. 1811/3110 cut-off events. For 63251/63290 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19170 event pairs, 209 based on Foata normal form. 29/3094 useless extension candidates. Maximal degree in co-relation 18744. Up to 1878 conditions per place. [2024-06-27 18:44:23,882 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 188 selfloop transitions, 61 changer transitions 0/257 dead transitions. [2024-06-27 18:44:23,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 257 transitions, 3268 flow [2024-06-27 18:44:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:23,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:44:23,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 18:44:23,884 INFO L175 Difference]: Start difference. First operand has 207 places, 202 transitions, 2384 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:44:23,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 257 transitions, 3268 flow [2024-06-27 18:44:24,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 257 transitions, 3186 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:24,063 INFO L231 Difference]: Finished difference. Result has 214 places, 204 transitions, 2455 flow [2024-06-27 18:44:24,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2455, PETRI_PLACES=214, PETRI_TRANSITIONS=204} [2024-06-27 18:44:24,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-27 18:44:24,063 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 204 transitions, 2455 flow [2024-06-27 18:44:24,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:24,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:24,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:24,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:44:24,064 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:24,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:24,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1419927062, now seen corresponding path program 5 times [2024-06-27 18:44:24,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:24,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890696118] [2024-06-27 18:44:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:24,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890696118] [2024-06-27 18:44:24,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890696118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:24,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:25,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822413383] [2024-06-27 18:44:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:25,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:25,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:25,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:25,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:25,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:25,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 204 transitions, 2455 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:25,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:25,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:25,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:25,790 INFO L124 PetriNetUnfolderBase]: 1831/3086 cut-off events. [2024-06-27 18:44:25,790 INFO L125 PetriNetUnfolderBase]: For 64394/64425 co-relation queries the response was YES. [2024-06-27 18:44:25,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19249 conditions, 3086 events. 1831/3086 cut-off events. For 64394/64425 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18614 event pairs, 302 based on Foata normal form. 19/3052 useless extension candidates. Maximal degree in co-relation 19145. Up to 2676 conditions per place. [2024-06-27 18:44:25,820 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 205 selfloop transitions, 35 changer transitions 0/248 dead transitions. [2024-06-27 18:44:25,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 248 transitions, 3154 flow [2024-06-27 18:44:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:25,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 18:44:25,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 18:44:25,821 INFO L175 Difference]: Start difference. First operand has 214 places, 204 transitions, 2455 flow. Second operand 10 states and 176 transitions. [2024-06-27 18:44:25,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 248 transitions, 3154 flow [2024-06-27 18:44:25,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 248 transitions, 3041 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:25,988 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 2481 flow [2024-06-27 18:44:25,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2481, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2024-06-27 18:44:25,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2024-06-27 18:44:25,988 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 2481 flow [2024-06-27 18:44:25,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:25,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:25,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:25,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:44:25,989 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:25,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1053483744, now seen corresponding path program 1 times [2024-06-27 18:44:25,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:25,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578788355] [2024-06-27 18:44:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:26,869 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 18:44:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578788355] [2024-06-27 18:44:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578788355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:26,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577841538] [2024-06-27 18:44:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:26,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:26,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:26,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:26,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:26,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:26,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 207 transitions, 2481 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:26,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:26,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:26,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:27,673 INFO L124 PetriNetUnfolderBase]: 1871/3372 cut-off events. [2024-06-27 18:44:27,673 INFO L125 PetriNetUnfolderBase]: For 68226/68251 co-relation queries the response was YES. [2024-06-27 18:44:27,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19939 conditions, 3372 events. 1871/3372 cut-off events. For 68226/68251 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22022 event pairs, 429 based on Foata normal form. 17/3340 useless extension candidates. Maximal degree in co-relation 19834. Up to 2803 conditions per place. [2024-06-27 18:44:27,708 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 210 selfloop transitions, 27 changer transitions 0/245 dead transitions. [2024-06-27 18:44:27,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 245 transitions, 3138 flow [2024-06-27 18:44:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:44:27,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:44:27,709 INFO L175 Difference]: Start difference. First operand has 219 places, 207 transitions, 2481 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:44:27,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 245 transitions, 3138 flow [2024-06-27 18:44:27,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 245 transitions, 3036 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:27,883 INFO L231 Difference]: Finished difference. Result has 220 places, 210 transitions, 2481 flow [2024-06-27 18:44:27,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2481, PETRI_PLACES=220, PETRI_TRANSITIONS=210} [2024-06-27 18:44:27,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-27 18:44:27,884 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 210 transitions, 2481 flow [2024-06-27 18:44:27,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:27,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:27,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:27,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:44:27,885 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:27,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:27,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1254283154, now seen corresponding path program 1 times [2024-06-27 18:44:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:27,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641533170] [2024-06-27 18:44:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:27,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641533170] [2024-06-27 18:44:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641533170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639916403] [2024-06-27 18:44:29,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:29,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:29,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:29,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:29,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 210 transitions, 2481 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:29,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:29,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:29,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:30,255 INFO L124 PetriNetUnfolderBase]: 1887/3409 cut-off events. [2024-06-27 18:44:30,255 INFO L125 PetriNetUnfolderBase]: For 68469/68520 co-relation queries the response was YES. [2024-06-27 18:44:30,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19912 conditions, 3409 events. 1887/3409 cut-off events. For 68469/68520 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22468 event pairs, 337 based on Foata normal form. 31/3397 useless extension candidates. Maximal degree in co-relation 19806. Up to 2675 conditions per place. [2024-06-27 18:44:30,285 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 206 selfloop transitions, 45 changer transitions 0/259 dead transitions. [2024-06-27 18:44:30,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 259 transitions, 3219 flow [2024-06-27 18:44:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:44:30,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:44:30,287 INFO L175 Difference]: Start difference. First operand has 220 places, 210 transitions, 2481 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:44:30,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 259 transitions, 3219 flow [2024-06-27 18:44:30,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 259 transitions, 3159 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:30,460 INFO L231 Difference]: Finished difference. Result has 226 places, 217 transitions, 2617 flow [2024-06-27 18:44:30,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2617, PETRI_PLACES=226, PETRI_TRANSITIONS=217} [2024-06-27 18:44:30,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-27 18:44:30,460 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 217 transitions, 2617 flow [2024-06-27 18:44:30,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:30,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:30,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:30,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:44:30,461 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:30,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:30,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1046803616, now seen corresponding path program 6 times [2024-06-27 18:44:30,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:30,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909343237] [2024-06-27 18:44:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:30,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:31,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:31,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909343237] [2024-06-27 18:44:31,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909343237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:31,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:31,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:31,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093020858] [2024-06-27 18:44:31,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:31,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:31,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:31,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:31,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:31,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:31,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 217 transitions, 2617 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:31,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:31,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:31,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:32,673 INFO L124 PetriNetUnfolderBase]: 1913/3401 cut-off events. [2024-06-27 18:44:32,673 INFO L125 PetriNetUnfolderBase]: For 72990/73019 co-relation queries the response was YES. [2024-06-27 18:44:32,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20655 conditions, 3401 events. 1913/3401 cut-off events. For 72990/73019 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22029 event pairs, 433 based on Foata normal form. 15/3358 useless extension candidates. Maximal degree in co-relation 20546. Up to 2939 conditions per place. [2024-06-27 18:44:32,714 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 223 selfloop transitions, 24 changer transitions 0/255 dead transitions. [2024-06-27 18:44:32,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 255 transitions, 3295 flow [2024-06-27 18:44:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:44:32,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:44:32,716 INFO L175 Difference]: Start difference. First operand has 226 places, 217 transitions, 2617 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:44:32,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 255 transitions, 3295 flow [2024-06-27 18:44:32,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 255 transitions, 3213 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:32,980 INFO L231 Difference]: Finished difference. Result has 230 places, 218 transitions, 2611 flow [2024-06-27 18:44:32,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2535, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2611, PETRI_PLACES=230, PETRI_TRANSITIONS=218} [2024-06-27 18:44:32,981 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-27 18:44:32,981 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 218 transitions, 2611 flow [2024-06-27 18:44:32,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:32,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:32,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:32,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:44:32,982 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:32,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:32,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1046981370, now seen corresponding path program 2 times [2024-06-27 18:44:32,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:32,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224072769] [2024-06-27 18:44:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:32,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:34,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:34,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224072769] [2024-06-27 18:44:34,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224072769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:34,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:34,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:34,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611216778] [2024-06-27 18:44:34,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:34,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:34,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:34,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:34,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:34,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:34,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 218 transitions, 2611 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:34,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:34,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:34,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:35,173 INFO L124 PetriNetUnfolderBase]: 1924/3465 cut-off events. [2024-06-27 18:44:35,173 INFO L125 PetriNetUnfolderBase]: For 73985/74030 co-relation queries the response was YES. [2024-06-27 18:44:35,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20765 conditions, 3465 events. 1924/3465 cut-off events. For 73985/74030 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22810 event pairs, 360 based on Foata normal form. 30/3447 useless extension candidates. Maximal degree in co-relation 20654. Up to 2765 conditions per place. [2024-06-27 18:44:35,275 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 213 selfloop transitions, 40 changer transitions 0/261 dead transitions. [2024-06-27 18:44:35,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 261 transitions, 3337 flow [2024-06-27 18:44:35,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:44:35,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:44:35,276 INFO L175 Difference]: Start difference. First operand has 230 places, 218 transitions, 2611 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:44:35,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 261 transitions, 3337 flow [2024-06-27 18:44:35,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 261 transitions, 3246 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:35,501 INFO L231 Difference]: Finished difference. Result has 230 places, 220 transitions, 2649 flow [2024-06-27 18:44:35,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2649, PETRI_PLACES=230, PETRI_TRANSITIONS=220} [2024-06-27 18:44:35,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-27 18:44:35,502 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 220 transitions, 2649 flow [2024-06-27 18:44:35,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:35,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:35,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:35,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:44:35,503 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:35,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1053244176, now seen corresponding path program 5 times [2024-06-27 18:44:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:35,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585122609] [2024-06-27 18:44:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:35,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:36,446 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 18:44:36,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585122609] [2024-06-27 18:44:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585122609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:36,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:36,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:36,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034055664] [2024-06-27 18:44:36,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:36,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:36,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:36,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 220 transitions, 2649 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:36,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:36,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:36,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:37,460 INFO L124 PetriNetUnfolderBase]: 1972/3531 cut-off events. [2024-06-27 18:44:37,460 INFO L125 PetriNetUnfolderBase]: For 80926/80974 co-relation queries the response was YES. [2024-06-27 18:44:37,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21321 conditions, 3531 events. 1972/3531 cut-off events. For 80926/80974 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23215 event pairs, 367 based on Foata normal form. 23/3504 useless extension candidates. Maximal degree in co-relation 21210. Up to 2829 conditions per place. [2024-06-27 18:44:37,494 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 223 selfloop transitions, 36 changer transitions 0/267 dead transitions. [2024-06-27 18:44:37,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 267 transitions, 3529 flow [2024-06-27 18:44:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:44:37,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:44:37,496 INFO L175 Difference]: Start difference. First operand has 230 places, 220 transitions, 2649 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:44:37,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 267 transitions, 3529 flow [2024-06-27 18:44:37,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 267 transitions, 3426 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:37,746 INFO L231 Difference]: Finished difference. Result has 232 places, 224 transitions, 2695 flow [2024-06-27 18:44:37,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2695, PETRI_PLACES=232, PETRI_TRANSITIONS=224} [2024-06-27 18:44:37,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-27 18:44:37,747 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 224 transitions, 2695 flow [2024-06-27 18:44:37,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:37,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:37,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:37,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:44:37,748 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:37,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1046981556, now seen corresponding path program 6 times [2024-06-27 18:44:37,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:37,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096102805] [2024-06-27 18:44:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:37,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:38,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:38,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096102805] [2024-06-27 18:44:38,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096102805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:38,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:38,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:38,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300728986] [2024-06-27 18:44:38,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:38,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:38,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:38,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:38,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:38,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 224 transitions, 2695 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:38,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:38,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:38,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:39,662 INFO L124 PetriNetUnfolderBase]: 2046/3631 cut-off events. [2024-06-27 18:44:39,662 INFO L125 PetriNetUnfolderBase]: For 91246/91309 co-relation queries the response was YES. [2024-06-27 18:44:39,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22359 conditions, 3631 events. 2046/3631 cut-off events. For 91246/91309 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23779 event pairs, 349 based on Foata normal form. 37/3622 useless extension candidates. Maximal degree in co-relation 22247. Up to 2789 conditions per place. [2024-06-27 18:44:39,702 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 222 selfloop transitions, 47 changer transitions 0/277 dead transitions. [2024-06-27 18:44:39,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 277 transitions, 3875 flow [2024-06-27 18:44:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:44:39,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162162162162162 [2024-06-27 18:44:39,704 INFO L175 Difference]: Start difference. First operand has 232 places, 224 transitions, 2695 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:44:39,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 277 transitions, 3875 flow [2024-06-27 18:44:40,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 277 transitions, 3803 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:40,007 INFO L231 Difference]: Finished difference. Result has 236 places, 230 transitions, 2840 flow [2024-06-27 18:44:40,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2840, PETRI_PLACES=236, PETRI_TRANSITIONS=230} [2024-06-27 18:44:40,008 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 18:44:40,008 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 230 transitions, 2840 flow [2024-06-27 18:44:40,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:40,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:40,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:40,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:44:40,009 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:40,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash 142083598, now seen corresponding path program 3 times [2024-06-27 18:44:40,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:40,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233973240] [2024-06-27 18:44:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:40,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:40,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:40,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233973240] [2024-06-27 18:44:40,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233973240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:40,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:40,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830494624] [2024-06-27 18:44:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:41,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:41,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 230 transitions, 2840 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:41,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:41,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:41,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:41,831 INFO L124 PetriNetUnfolderBase]: 2047/3642 cut-off events. [2024-06-27 18:44:41,831 INFO L125 PetriNetUnfolderBase]: For 92287/92338 co-relation queries the response was YES. [2024-06-27 18:44:41,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22579 conditions, 3642 events. 2047/3642 cut-off events. For 92287/92338 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23979 event pairs, 395 based on Foata normal form. 26/3613 useless extension candidates. Maximal degree in co-relation 22465. Up to 2949 conditions per place. [2024-06-27 18:44:41,870 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 223 selfloop transitions, 37 changer transitions 0/268 dead transitions. [2024-06-27 18:44:41,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 268 transitions, 3560 flow [2024-06-27 18:44:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:41,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:44:41,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 18:44:41,871 INFO L175 Difference]: Start difference. First operand has 236 places, 230 transitions, 2840 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:44:41,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 268 transitions, 3560 flow [2024-06-27 18:44:42,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 268 transitions, 3442 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:42,174 INFO L231 Difference]: Finished difference. Result has 239 places, 232 transitions, 2852 flow [2024-06-27 18:44:42,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2722, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2852, PETRI_PLACES=239, PETRI_TRANSITIONS=232} [2024-06-27 18:44:42,174 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 18:44:42,174 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 232 transitions, 2852 flow [2024-06-27 18:44:42,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:42,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:42,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:42,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:44:42,175 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:42,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:42,175 INFO L85 PathProgramCache]: Analyzing trace with hash 135834184, now seen corresponding path program 7 times [2024-06-27 18:44:42,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:42,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540092615] [2024-06-27 18:44:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:42,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:43,578 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 18:44:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540092615] [2024-06-27 18:44:43,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540092615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:43,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:43,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:43,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300563244] [2024-06-27 18:44:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:43,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:43,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:43,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 232 transitions, 2852 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:43,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:43,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:43,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:44,645 INFO L124 PetriNetUnfolderBase]: 2049/3668 cut-off events. [2024-06-27 18:44:44,645 INFO L125 PetriNetUnfolderBase]: For 88811/88870 co-relation queries the response was YES. [2024-06-27 18:44:44,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22389 conditions, 3668 events. 2049/3668 cut-off events. For 88811/88870 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 24312 event pairs, 382 based on Foata normal form. 29/3650 useless extension candidates. Maximal degree in co-relation 22274. Up to 2797 conditions per place. [2024-06-27 18:44:44,689 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 221 selfloop transitions, 48 changer transitions 0/277 dead transitions. [2024-06-27 18:44:44,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 277 transitions, 3810 flow [2024-06-27 18:44:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:44:44,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 18:44:44,690 INFO L175 Difference]: Start difference. First operand has 239 places, 232 transitions, 2852 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:44:44,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 277 transitions, 3810 flow [2024-06-27 18:44:45,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 277 transitions, 3677 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:45,026 INFO L231 Difference]: Finished difference. Result has 241 places, 232 transitions, 2820 flow [2024-06-27 18:44:45,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2820, PETRI_PLACES=241, PETRI_TRANSITIONS=232} [2024-06-27 18:44:45,026 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-27 18:44:45,027 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 232 transitions, 2820 flow [2024-06-27 18:44:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:45,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:45,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:45,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:44:45,027 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:45,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash 142083784, now seen corresponding path program 8 times [2024-06-27 18:44:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:45,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089572874] [2024-06-27 18:44:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:46,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:46,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089572874] [2024-06-27 18:44:46,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089572874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:46,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:46,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:46,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598702521] [2024-06-27 18:44:46,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:46,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:46,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:46,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:46,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:46,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 232 transitions, 2820 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:46,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:46,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:46,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:47,094 INFO L124 PetriNetUnfolderBase]: 2093/3692 cut-off events. [2024-06-27 18:44:47,095 INFO L125 PetriNetUnfolderBase]: For 94476/94527 co-relation queries the response was YES. [2024-06-27 18:44:47,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22576 conditions, 3692 events. 2093/3692 cut-off events. For 94476/94527 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24154 event pairs, 378 based on Foata normal form. 27/3666 useless extension candidates. Maximal degree in co-relation 22461. Up to 2915 conditions per place. [2024-06-27 18:44:47,129 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 230 selfloop transitions, 41 changer transitions 0/279 dead transitions. [2024-06-27 18:44:47,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 279 transitions, 3736 flow [2024-06-27 18:44:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:44:47,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 18:44:47,131 INFO L175 Difference]: Start difference. First operand has 241 places, 232 transitions, 2820 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:44:47,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 279 transitions, 3736 flow [2024-06-27 18:44:47,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 279 transitions, 3626 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:47,433 INFO L231 Difference]: Finished difference. Result has 243 places, 236 transitions, 2876 flow [2024-06-27 18:44:47,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2876, PETRI_PLACES=243, PETRI_TRANSITIONS=236} [2024-06-27 18:44:47,433 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 18:44:47,434 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 236 transitions, 2876 flow [2024-06-27 18:44:47,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:47,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:47,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:47,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:44:47,434 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:47,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash 135654694, now seen corresponding path program 9 times [2024-06-27 18:44:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:47,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514077795] [2024-06-27 18:44:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:48,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:48,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514077795] [2024-06-27 18:44:48,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514077795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:48,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:48,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:48,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654133334] [2024-06-27 18:44:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:48,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:48,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:48,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:48,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:48,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:48,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 236 transitions, 2876 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:48,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:48,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:48,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:49,737 INFO L124 PetriNetUnfolderBase]: 2165/3807 cut-off events. [2024-06-27 18:44:49,738 INFO L125 PetriNetUnfolderBase]: For 101937/101988 co-relation queries the response was YES. [2024-06-27 18:44:49,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23490 conditions, 3807 events. 2165/3807 cut-off events. For 101937/101988 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24969 event pairs, 358 based on Foata normal form. 31/3795 useless extension candidates. Maximal degree in co-relation 23374. Up to 2724 conditions per place. [2024-06-27 18:44:49,782 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 220 selfloop transitions, 60 changer transitions 0/288 dead transitions. [2024-06-27 18:44:49,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 288 transitions, 3988 flow [2024-06-27 18:44:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:44:49,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 18:44:49,783 INFO L175 Difference]: Start difference. First operand has 243 places, 236 transitions, 2876 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:44:49,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 288 transitions, 3988 flow [2024-06-27 18:44:50,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 288 transitions, 3901 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:50,168 INFO L231 Difference]: Finished difference. Result has 247 places, 242 transitions, 3042 flow [2024-06-27 18:44:50,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3042, PETRI_PLACES=247, PETRI_TRANSITIONS=242} [2024-06-27 18:44:50,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-27 18:44:50,170 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 242 transitions, 3042 flow [2024-06-27 18:44:50,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:50,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:50,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:50,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:44:50,171 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:50,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash 135649858, now seen corresponding path program 4 times [2024-06-27 18:44:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263147097] [2024-06-27 18:44:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:50,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:51,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:51,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263147097] [2024-06-27 18:44:51,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263147097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:51,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:51,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:51,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950341258] [2024-06-27 18:44:51,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:51,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:51,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:51,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:51,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 242 transitions, 3042 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:51,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:51,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:51,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:52,110 INFO L124 PetriNetUnfolderBase]: 2161/3865 cut-off events. [2024-06-27 18:44:52,110 INFO L125 PetriNetUnfolderBase]: For 97984/98034 co-relation queries the response was YES. [2024-06-27 18:44:52,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23745 conditions, 3865 events. 2161/3865 cut-off events. For 97984/98034 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 25803 event pairs, 414 based on Foata normal form. 30/3848 useless extension candidates. Maximal degree in co-relation 23627. Up to 3059 conditions per place. [2024-06-27 18:44:52,154 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 232 selfloop transitions, 50 changer transitions 0/290 dead transitions. [2024-06-27 18:44:52,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 290 transitions, 3818 flow [2024-06-27 18:44:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:52,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:44:52,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-27 18:44:52,156 INFO L175 Difference]: Start difference. First operand has 247 places, 242 transitions, 3042 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:44:52,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 290 transitions, 3818 flow [2024-06-27 18:44:52,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 290 transitions, 3676 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:52,528 INFO L231 Difference]: Finished difference. Result has 252 places, 242 transitions, 3008 flow [2024-06-27 18:44:52,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2900, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3008, PETRI_PLACES=252, PETRI_TRANSITIONS=242} [2024-06-27 18:44:52,529 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 18:44:52,529 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 242 transitions, 3008 flow [2024-06-27 18:44:52,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:52,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:52,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:52,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:44:52,530 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:52,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash -274953212, now seen corresponding path program 10 times [2024-06-27 18:44:52,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:52,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685538123] [2024-06-27 18:44:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:52,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:53,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:53,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685538123] [2024-06-27 18:44:53,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685538123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:53,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918795625] [2024-06-27 18:44:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:53,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:53,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:53,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:53,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 242 transitions, 3008 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:53,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:53,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:53,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:54,833 INFO L124 PetriNetUnfolderBase]: 2261/3952 cut-off events. [2024-06-27 18:44:54,834 INFO L125 PetriNetUnfolderBase]: For 114533/114638 co-relation queries the response was YES. [2024-06-27 18:44:54,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24919 conditions, 3952 events. 2261/3952 cut-off events. For 114533/114638 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 25942 event pairs, 521 based on Foata normal form. 39/3926 useless extension candidates. Maximal degree in co-relation 24800. Up to 2865 conditions per place. [2024-06-27 18:44:54,878 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 238 selfloop transitions, 47 changer transitions 0/293 dead transitions. [2024-06-27 18:44:54,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 293 transitions, 4287 flow [2024-06-27 18:44:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:54,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:44:54,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:44:54,880 INFO L175 Difference]: Start difference. First operand has 252 places, 242 transitions, 3008 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:44:54,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 293 transitions, 4287 flow [2024-06-27 18:44:55,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 293 transitions, 4123 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:55,351 INFO L231 Difference]: Finished difference. Result has 254 places, 250 transitions, 3118 flow [2024-06-27 18:44:55,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3118, PETRI_PLACES=254, PETRI_TRANSITIONS=250} [2024-06-27 18:44:55,351 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-27 18:44:55,352 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 250 transitions, 3118 flow [2024-06-27 18:44:55,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:55,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:55,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:55,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:44:55,352 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:55,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash 76519284, now seen corresponding path program 11 times [2024-06-27 18:44:55,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:55,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211323299] [2024-06-27 18:44:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:55,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:56,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:56,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211323299] [2024-06-27 18:44:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211323299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628868081] [2024-06-27 18:44:56,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:56,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:56,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:56,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 250 transitions, 3118 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:56,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:56,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:56,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:57,454 INFO L124 PetriNetUnfolderBase]: 2331/4093 cut-off events. [2024-06-27 18:44:57,454 INFO L125 PetriNetUnfolderBase]: For 123966/124065 co-relation queries the response was YES. [2024-06-27 18:44:57,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26098 conditions, 4093 events. 2331/4093 cut-off events. For 123966/124065 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27193 event pairs, 532 based on Foata normal form. 39/4067 useless extension candidates. Maximal degree in co-relation 25977. Up to 2910 conditions per place. [2024-06-27 18:44:57,495 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 242 selfloop transitions, 50 changer transitions 0/300 dead transitions. [2024-06-27 18:44:57,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 300 transitions, 4412 flow [2024-06-27 18:44:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:44:57,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:44:57,496 INFO L175 Difference]: Start difference. First operand has 254 places, 250 transitions, 3118 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:44:57,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 300 transitions, 4412 flow [2024-06-27 18:44:57,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 300 transitions, 4132 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:57,856 INFO L231 Difference]: Finished difference. Result has 257 places, 256 transitions, 3081 flow [2024-06-27 18:44:57,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3081, PETRI_PLACES=257, PETRI_TRANSITIONS=256} [2024-06-27 18:44:57,857 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 18:44:57,857 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 256 transitions, 3081 flow [2024-06-27 18:44:57,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:57,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:57,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:57,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:44:57,858 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:57,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2059326312, now seen corresponding path program 7 times [2024-06-27 18:44:57,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:57,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504149128] [2024-06-27 18:44:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:57,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:58,575 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 18:44:58,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:58,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504149128] [2024-06-27 18:44:58,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504149128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:58,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:58,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:44:58,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117956034] [2024-06-27 18:44:58,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:58,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:44:58,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:58,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:44:58,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:44:58,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:44:58,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 256 transitions, 3081 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:58,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:58,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:44:58,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:59,492 INFO L124 PetriNetUnfolderBase]: 2336/4019 cut-off events. [2024-06-27 18:44:59,492 INFO L125 PetriNetUnfolderBase]: For 114965/115049 co-relation queries the response was YES. [2024-06-27 18:44:59,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25208 conditions, 4019 events. 2336/4019 cut-off events. For 114965/115049 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 26070 event pairs, 640 based on Foata normal form. 24/3960 useless extension candidates. Maximal degree in co-relation 25087. Up to 3624 conditions per place. [2024-06-27 18:44:59,532 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 262 selfloop transitions, 16 changer transitions 0/286 dead transitions. [2024-06-27 18:44:59,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 286 transitions, 3781 flow [2024-06-27 18:44:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:44:59,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:44:59,534 INFO L175 Difference]: Start difference. First operand has 257 places, 256 transitions, 3081 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:44:59,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 286 transitions, 3781 flow [2024-06-27 18:44:59,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 286 transitions, 3676 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:59,939 INFO L231 Difference]: Finished difference. Result has 260 places, 257 transitions, 3038 flow [2024-06-27 18:44:59,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3038, PETRI_PLACES=260, PETRI_TRANSITIONS=257} [2024-06-27 18:44:59,940 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 18:44:59,940 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 257 transitions, 3038 flow [2024-06-27 18:44:59,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:59,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:59,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:59,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:44:59,941 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:59,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2059321352, now seen corresponding path program 12 times [2024-06-27 18:44:59,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:59,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325943347] [2024-06-27 18:44:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:59,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:00,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:00,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325943347] [2024-06-27 18:45:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325943347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:00,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:00,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:00,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721831474] [2024-06-27 18:45:00,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:00,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:00,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:00,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 257 transitions, 3038 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:00,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:00,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:00,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:01,901 INFO L124 PetriNetUnfolderBase]: 2328/3977 cut-off events. [2024-06-27 18:45:01,901 INFO L125 PetriNetUnfolderBase]: For 113844/113961 co-relation queries the response was YES. [2024-06-27 18:45:01,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24562 conditions, 3977 events. 2328/3977 cut-off events. For 113844/113961 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 25669 event pairs, 488 based on Foata normal form. 53/3961 useless extension candidates. Maximal degree in co-relation 24440. Up to 2913 conditions per place. [2024-06-27 18:45:01,941 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 237 selfloop transitions, 54 changer transitions 0/299 dead transitions. [2024-06-27 18:45:01,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 299 transitions, 4061 flow [2024-06-27 18:45:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:01,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:45:01,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:45:01,942 INFO L175 Difference]: Start difference. First operand has 260 places, 257 transitions, 3038 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:45:01,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 299 transitions, 4061 flow [2024-06-27 18:45:02,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 299 transitions, 3993 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:02,387 INFO L231 Difference]: Finished difference. Result has 263 places, 257 transitions, 3085 flow [2024-06-27 18:45:02,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3085, PETRI_PLACES=263, PETRI_TRANSITIONS=257} [2024-06-27 18:45:02,388 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-27 18:45:02,388 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 257 transitions, 3085 flow [2024-06-27 18:45:02,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:02,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:02,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:45:02,388 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:02,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1832190436, now seen corresponding path program 2 times [2024-06-27 18:45:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:02,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987158230] [2024-06-27 18:45:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:02,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:03,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:03,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987158230] [2024-06-27 18:45:03,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987158230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:03,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:03,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825277413] [2024-06-27 18:45:03,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:03,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:03,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:03,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:03,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:03,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:03,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 257 transitions, 3085 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:03,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:03,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:03,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:04,387 INFO L124 PetriNetUnfolderBase]: 2348/4021 cut-off events. [2024-06-27 18:45:04,387 INFO L125 PetriNetUnfolderBase]: For 112945/113034 co-relation queries the response was YES. [2024-06-27 18:45:04,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25004 conditions, 4021 events. 2348/4021 cut-off events. For 112945/113034 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 26008 event pairs, 637 based on Foata normal form. 25/3958 useless extension candidates. Maximal degree in co-relation 24881. Up to 3646 conditions per place. [2024-06-27 18:45:04,437 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 265 selfloop transitions, 16 changer transitions 0/289 dead transitions. [2024-06-27 18:45:04,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 289 transitions, 3805 flow [2024-06-27 18:45:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:45:04,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:45:04,439 INFO L175 Difference]: Start difference. First operand has 263 places, 257 transitions, 3085 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:45:04,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 289 transitions, 3805 flow [2024-06-27 18:45:04,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 289 transitions, 3690 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:04,932 INFO L231 Difference]: Finished difference. Result has 265 places, 260 transitions, 3059 flow [2024-06-27 18:45:04,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3059, PETRI_PLACES=265, PETRI_TRANSITIONS=260} [2024-06-27 18:45:04,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-27 18:45:04,933 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 260 transitions, 3059 flow [2024-06-27 18:45:04,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:04,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:04,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:04,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:45:04,933 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:04,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2052646184, now seen corresponding path program 3 times [2024-06-27 18:45:04,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:04,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742087319] [2024-06-27 18:45:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:05,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:05,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742087319] [2024-06-27 18:45:05,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742087319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:05,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:05,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659973322] [2024-06-27 18:45:05,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:05,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:05,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:05,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 260 transitions, 3059 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:05,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:05,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:05,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:06,991 INFO L124 PetriNetUnfolderBase]: 2368/4063 cut-off events. [2024-06-27 18:45:06,991 INFO L125 PetriNetUnfolderBase]: For 115761/115855 co-relation queries the response was YES. [2024-06-27 18:45:07,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25002 conditions, 4063 events. 2368/4063 cut-off events. For 115761/115855 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26415 event pairs, 628 based on Foata normal form. 24/3997 useless extension candidates. Maximal degree in co-relation 24877. Up to 3638 conditions per place. [2024-06-27 18:45:07,035 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 266 selfloop transitions, 20 changer transitions 0/294 dead transitions. [2024-06-27 18:45:07,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 294 transitions, 3801 flow [2024-06-27 18:45:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:45:07,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:45:07,036 INFO L175 Difference]: Start difference. First operand has 265 places, 260 transitions, 3059 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:45:07,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 294 transitions, 3801 flow [2024-06-27 18:45:07,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 294 transitions, 3759 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:07,530 INFO L231 Difference]: Finished difference. Result has 268 places, 262 transitions, 3101 flow [2024-06-27 18:45:07,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3101, PETRI_PLACES=268, PETRI_TRANSITIONS=262} [2024-06-27 18:45:07,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-27 18:45:07,531 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 262 transitions, 3101 flow [2024-06-27 18:45:07,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:07,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:07,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:45:07,532 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:07,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1832430004, now seen corresponding path program 13 times [2024-06-27 18:45:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:07,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882771627] [2024-06-27 18:45:07,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:07,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:08,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882771627] [2024-06-27 18:45:08,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882771627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:08,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:08,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:08,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470230565] [2024-06-27 18:45:08,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:08,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:08,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:08,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:08,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:08,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 262 transitions, 3101 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:08,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:08,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:08,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:09,824 INFO L124 PetriNetUnfolderBase]: 2416/4131 cut-off events. [2024-06-27 18:45:09,824 INFO L125 PetriNetUnfolderBase]: For 124836/124959 co-relation queries the response was YES. [2024-06-27 18:45:09,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25690 conditions, 4131 events. 2416/4131 cut-off events. For 124836/124959 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 26782 event pairs, 620 based on Foata normal form. 39/4084 useless extension candidates. Maximal degree in co-relation 25564. Up to 3621 conditions per place. [2024-06-27 18:45:09,868 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 272 selfloop transitions, 25 changer transitions 0/305 dead transitions. [2024-06-27 18:45:09,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 305 transitions, 4080 flow [2024-06-27 18:45:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:45:09,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:45:09,870 INFO L175 Difference]: Start difference. First operand has 268 places, 262 transitions, 3101 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:45:09,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 305 transitions, 4080 flow [2024-06-27 18:45:10,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 305 transitions, 4003 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:10,348 INFO L231 Difference]: Finished difference. Result has 270 places, 268 transitions, 3197 flow [2024-06-27 18:45:10,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3024, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3197, PETRI_PLACES=270, PETRI_TRANSITIONS=268} [2024-06-27 18:45:10,349 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 18:45:10,349 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 268 transitions, 3197 flow [2024-06-27 18:45:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:10,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:10,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:10,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:45:10,349 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:10,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash 82781904, now seen corresponding path program 14 times [2024-06-27 18:45:10,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:10,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804016883] [2024-06-27 18:45:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:10,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:11,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:11,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804016883] [2024-06-27 18:45:11,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804016883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:11,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:11,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:11,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558349937] [2024-06-27 18:45:11,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:11,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:11,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:11,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:11,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:11,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 268 transitions, 3197 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:11,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:11,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:11,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:12,585 INFO L124 PetriNetUnfolderBase]: 2490/4270 cut-off events. [2024-06-27 18:45:12,586 INFO L125 PetriNetUnfolderBase]: For 137523/137619 co-relation queries the response was YES. [2024-06-27 18:45:12,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26782 conditions, 4270 events. 2490/4270 cut-off events. For 137523/137619 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 27928 event pairs, 608 based on Foata normal form. 25/4208 useless extension candidates. Maximal degree in co-relation 26656. Up to 3586 conditions per place. [2024-06-27 18:45:12,631 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 275 selfloop transitions, 34 changer transitions 0/317 dead transitions. [2024-06-27 18:45:12,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 317 transitions, 4396 flow [2024-06-27 18:45:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:45:12,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:45:12,632 INFO L175 Difference]: Start difference. First operand has 270 places, 268 transitions, 3197 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:45:12,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 317 transitions, 4396 flow [2024-06-27 18:45:13,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 317 transitions, 4322 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:13,220 INFO L231 Difference]: Finished difference. Result has 276 places, 275 transitions, 3334 flow [2024-06-27 18:45:13,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3334, PETRI_PLACES=276, PETRI_TRANSITIONS=275} [2024-06-27 18:45:13,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-27 18:45:13,221 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 275 transitions, 3334 flow [2024-06-27 18:45:13,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:13,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:13,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:13,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:45:13,221 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:13,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2052892262, now seen corresponding path program 15 times [2024-06-27 18:45:13,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164674095] [2024-06-27 18:45:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:13,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164674095] [2024-06-27 18:45:14,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164674095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:14,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:14,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716125672] [2024-06-27 18:45:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:14,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:14,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:14,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:14,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 275 transitions, 3334 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:14,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:14,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:14,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:15,271 INFO L124 PetriNetUnfolderBase]: 2482/4225 cut-off events. [2024-06-27 18:45:15,271 INFO L125 PetriNetUnfolderBase]: For 135455/135554 co-relation queries the response was YES. [2024-06-27 18:45:15,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26477 conditions, 4225 events. 2482/4225 cut-off events. For 135455/135554 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 27427 event pairs, 605 based on Foata normal form. 29/4167 useless extension candidates. Maximal degree in co-relation 26348. Up to 3582 conditions per place. [2024-06-27 18:45:15,318 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 275 selfloop transitions, 33 changer transitions 0/316 dead transitions. [2024-06-27 18:45:15,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 316 transitions, 4279 flow [2024-06-27 18:45:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:45:15,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:45:15,320 INFO L175 Difference]: Start difference. First operand has 276 places, 275 transitions, 3334 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:45:15,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 316 transitions, 4279 flow [2024-06-27 18:45:15,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 316 transitions, 4174 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:15,880 INFO L231 Difference]: Finished difference. Result has 281 places, 275 transitions, 3302 flow [2024-06-27 18:45:15,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3302, PETRI_PLACES=281, PETRI_TRANSITIONS=275} [2024-06-27 18:45:15,881 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 18:45:15,881 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 275 transitions, 3302 flow [2024-06-27 18:45:15,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:15,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:15,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:15,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:45:15,882 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:15,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash -329147330, now seen corresponding path program 4 times [2024-06-27 18:45:15,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:15,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283263509] [2024-06-27 18:45:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:15,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:16,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283263509] [2024-06-27 18:45:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283263509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:16,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:16,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:16,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283884628] [2024-06-27 18:45:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:16,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:16,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:16,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 275 transitions, 3302 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:16,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:16,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:16,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:17,655 INFO L124 PetriNetUnfolderBase]: 2512/4287 cut-off events. [2024-06-27 18:45:17,655 INFO L125 PetriNetUnfolderBase]: For 134761/134874 co-relation queries the response was YES. [2024-06-27 18:45:17,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26787 conditions, 4287 events. 2512/4287 cut-off events. For 134761/134874 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 27962 event pairs, 689 based on Foata normal form. 31/4224 useless extension candidates. Maximal degree in co-relation 26656. Up to 3858 conditions per place. [2024-06-27 18:45:17,699 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 274 selfloop transitions, 26 changer transitions 0/308 dead transitions. [2024-06-27 18:45:17,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 308 transitions, 4072 flow [2024-06-27 18:45:17,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:45:17,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:45:17,700 INFO L175 Difference]: Start difference. First operand has 281 places, 275 transitions, 3302 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:45:17,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 308 transitions, 4072 flow [2024-06-27 18:45:18,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 308 transitions, 4013 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:18,301 INFO L231 Difference]: Finished difference. Result has 283 places, 278 transitions, 3376 flow [2024-06-27 18:45:18,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3376, PETRI_PLACES=283, PETRI_TRANSITIONS=278} [2024-06-27 18:45:18,302 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-27 18:45:18,302 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 278 transitions, 3376 flow [2024-06-27 18:45:18,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:18,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:18,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:18,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:45:18,303 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:18,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:18,303 INFO L85 PathProgramCache]: Analyzing trace with hash 627680800, now seen corresponding path program 5 times [2024-06-27 18:45:18,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:18,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676677592] [2024-06-27 18:45:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:18,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:18,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676677592] [2024-06-27 18:45:18,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676677592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:18,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:18,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:18,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019853948] [2024-06-27 18:45:18,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:18,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:18,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:18,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:18,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:19,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:19,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 278 transitions, 3376 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:19,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:19,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:19,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:19,959 INFO L124 PetriNetUnfolderBase]: 2517/4286 cut-off events. [2024-06-27 18:45:19,960 INFO L125 PetriNetUnfolderBase]: For 134143/134284 co-relation queries the response was YES. [2024-06-27 18:45:19,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26801 conditions, 4286 events. 2517/4286 cut-off events. For 134143/134284 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 27855 event pairs, 693 based on Foata normal form. 37/4226 useless extension candidates. Maximal degree in co-relation 26668. Up to 3908 conditions per place. [2024-06-27 18:45:20,013 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 279 selfloop transitions, 19 changer transitions 0/306 dead transitions. [2024-06-27 18:45:20,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 306 transitions, 4090 flow [2024-06-27 18:45:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:45:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:45:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:45:20,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:45:20,014 INFO L175 Difference]: Start difference. First operand has 283 places, 278 transitions, 3376 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:45:20,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 306 transitions, 4090 flow [2024-06-27 18:45:20,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 306 transitions, 4024 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:20,750 INFO L231 Difference]: Finished difference. Result has 288 places, 281 transitions, 3401 flow [2024-06-27 18:45:20,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3401, PETRI_PLACES=288, PETRI_TRANSITIONS=281} [2024-06-27 18:45:20,751 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 18:45:20,751 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 281 transitions, 3401 flow [2024-06-27 18:45:20,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:20,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:20,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:20,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:45:20,753 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:20,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:20,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1519393864, now seen corresponding path program 16 times [2024-06-27 18:45:20,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:20,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586075775] [2024-06-27 18:45:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:20,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:21,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:21,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586075775] [2024-06-27 18:45:21,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586075775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:21,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:21,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:21,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296101047] [2024-06-27 18:45:21,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:21,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:21,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:21,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:21,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:21,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 281 transitions, 3401 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:21,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:21,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:21,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:22,627 INFO L124 PetriNetUnfolderBase]: 2521/4294 cut-off events. [2024-06-27 18:45:22,628 INFO L125 PetriNetUnfolderBase]: For 132647/132780 co-relation queries the response was YES. [2024-06-27 18:45:22,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26763 conditions, 4294 events. 2521/4294 cut-off events. For 132647/132780 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 27925 event pairs, 691 based on Foata normal form. 47/4243 useless extension candidates. Maximal degree in co-relation 26627. Up to 3835 conditions per place. [2024-06-27 18:45:22,684 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 285 selfloop transitions, 24 changer transitions 0/317 dead transitions. [2024-06-27 18:45:22,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 317 transitions, 4195 flow [2024-06-27 18:45:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:45:22,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:45:22,685 INFO L175 Difference]: Start difference. First operand has 288 places, 281 transitions, 3401 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:45:22,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 317 transitions, 4195 flow [2024-06-27 18:45:23,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 317 transitions, 4138 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:23,404 INFO L231 Difference]: Finished difference. Result has 292 places, 283 transitions, 3435 flow [2024-06-27 18:45:23,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3435, PETRI_PLACES=292, PETRI_TRANSITIONS=283} [2024-06-27 18:45:23,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-27 18:45:23,405 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 283 transitions, 3435 flow [2024-06-27 18:45:23,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:23,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:23,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:45:23,405 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:23,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash 303231142, now seen corresponding path program 17 times [2024-06-27 18:45:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189725724] [2024-06-27 18:45:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:23,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:24,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189725724] [2024-06-27 18:45:24,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189725724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:24,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:24,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:24,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9650783] [2024-06-27 18:45:24,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:24,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:24,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:24,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:24,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:24,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 283 transitions, 3435 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:24,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:24,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:24,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:25,621 INFO L124 PetriNetUnfolderBase]: 2517/4304 cut-off events. [2024-06-27 18:45:25,621 INFO L125 PetriNetUnfolderBase]: For 125500/125643 co-relation queries the response was YES. [2024-06-27 18:45:25,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26664 conditions, 4304 events. 2517/4304 cut-off events. For 125500/125643 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 28074 event pairs, 658 based on Foata normal form. 45/4253 useless extension candidates. Maximal degree in co-relation 26527. Up to 3781 conditions per place. [2024-06-27 18:45:25,677 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 286 selfloop transitions, 25 changer transitions 0/319 dead transitions. [2024-06-27 18:45:25,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 319 transitions, 4211 flow [2024-06-27 18:45:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:45:25,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:45:25,678 INFO L175 Difference]: Start difference. First operand has 292 places, 283 transitions, 3435 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:45:25,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 319 transitions, 4211 flow [2024-06-27 18:45:26,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 319 transitions, 4124 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:26,339 INFO L231 Difference]: Finished difference. Result has 294 places, 283 transitions, 3403 flow [2024-06-27 18:45:26,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3348, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3403, PETRI_PLACES=294, PETRI_TRANSITIONS=283} [2024-06-27 18:45:26,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-27 18:45:26,340 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 283 transitions, 3403 flow [2024-06-27 18:45:26,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:26,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:26,340 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 18:45:26,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:45:26,341 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:26,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:26,341 INFO L85 PathProgramCache]: Analyzing trace with hash -297295092, now seen corresponding path program 1 times [2024-06-27 18:45:26,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:26,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573287446] [2024-06-27 18:45:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:26,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573287446] [2024-06-27 18:45:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573287446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:27,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:27,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:27,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784913657] [2024-06-27 18:45:27,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:27,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:27,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:27,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:27,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:27,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:27,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 283 transitions, 3403 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:45:27,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:27,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:27,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:28,345 INFO L124 PetriNetUnfolderBase]: 2560/4591 cut-off events. [2024-06-27 18:45:28,345 INFO L125 PetriNetUnfolderBase]: For 131464/131471 co-relation queries the response was YES. [2024-06-27 18:45:28,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27431 conditions, 4591 events. 2560/4591 cut-off events. For 131464/131471 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 31623 event pairs, 475 based on Foata normal form. 7/4548 useless extension candidates. Maximal degree in co-relation 27293. Up to 3483 conditions per place. [2024-06-27 18:45:28,401 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 296 selfloop transitions, 33 changer transitions 0/337 dead transitions. [2024-06-27 18:45:28,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 337 transitions, 4465 flow [2024-06-27 18:45:28,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:45:28,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 18:45:28,402 INFO L175 Difference]: Start difference. First operand has 294 places, 283 transitions, 3403 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:45:28,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 337 transitions, 4465 flow [2024-06-27 18:45:29,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 337 transitions, 4419 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:29,035 INFO L231 Difference]: Finished difference. Result has 297 places, 285 transitions, 3458 flow [2024-06-27 18:45:29,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3357, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3458, PETRI_PLACES=297, PETRI_TRANSITIONS=285} [2024-06-27 18:45:29,036 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-27 18:45:29,036 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 285 transitions, 3458 flow [2024-06-27 18:45:29,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:45:29,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:29,036 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 18:45:29,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:45:29,036 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:29,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:29,037 INFO L85 PathProgramCache]: Analyzing trace with hash -295417422, now seen corresponding path program 2 times [2024-06-27 18:45:29,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:29,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575720832] [2024-06-27 18:45:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:30,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:30,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575720832] [2024-06-27 18:45:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575720832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:30,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:30,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151867403] [2024-06-27 18:45:30,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:30,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:30,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:30,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:30,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:30,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 285 transitions, 3458 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:30,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:30,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:30,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:31,544 INFO L124 PetriNetUnfolderBase]: 2572/4605 cut-off events. [2024-06-27 18:45:31,544 INFO L125 PetriNetUnfolderBase]: For 134799/134806 co-relation queries the response was YES. [2024-06-27 18:45:31,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27706 conditions, 4605 events. 2572/4605 cut-off events. For 134799/134806 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 31709 event pairs, 535 based on Foata normal form. 7/4562 useless extension candidates. Maximal degree in co-relation 27567. Up to 3826 conditions per place. [2024-06-27 18:45:31,600 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 288 selfloop transitions, 34 changer transitions 0/330 dead transitions. [2024-06-27 18:45:31,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 330 transitions, 4316 flow [2024-06-27 18:45:31,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:31,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:45:31,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:45:31,602 INFO L175 Difference]: Start difference. First operand has 297 places, 285 transitions, 3458 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:45:31,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 330 transitions, 4316 flow [2024-06-27 18:45:32,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 330 transitions, 4252 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:32,330 INFO L231 Difference]: Finished difference. Result has 300 places, 286 transitions, 3484 flow [2024-06-27 18:45:32,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3484, PETRI_PLACES=300, PETRI_TRANSITIONS=286} [2024-06-27 18:45:32,331 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-27 18:45:32,331 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 286 transitions, 3484 flow [2024-06-27 18:45:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:32,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:32,331 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 18:45:32,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:45:32,331 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:32,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash -295421142, now seen corresponding path program 3 times [2024-06-27 18:45:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:32,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114294692] [2024-06-27 18:45:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:33,762 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 18:45:33,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:33,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114294692] [2024-06-27 18:45:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114294692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:33,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:33,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809620945] [2024-06-27 18:45:33,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:33,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:33,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:33,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:33,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 286 transitions, 3484 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:33,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:33,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:33,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:35,177 INFO L124 PetriNetUnfolderBase]: 2615/4690 cut-off events. [2024-06-27 18:45:35,177 INFO L125 PetriNetUnfolderBase]: For 138067/138074 co-relation queries the response was YES. [2024-06-27 18:45:35,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28159 conditions, 4690 events. 2615/4690 cut-off events. For 138067/138074 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32478 event pairs, 539 based on Foata normal form. 7/4647 useless extension candidates. Maximal degree in co-relation 28018. Up to 3802 conditions per place. [2024-06-27 18:45:35,229 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 304 selfloop transitions, 37 changer transitions 0/349 dead transitions. [2024-06-27 18:45:35,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 349 transitions, 4498 flow [2024-06-27 18:45:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-27 18:45:35,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2024-06-27 18:45:35,230 INFO L175 Difference]: Start difference. First operand has 300 places, 286 transitions, 3484 flow. Second operand 12 states and 214 transitions. [2024-06-27 18:45:35,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 349 transitions, 4498 flow [2024-06-27 18:45:35,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 349 transitions, 4418 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:35,798 INFO L231 Difference]: Finished difference. Result has 305 places, 291 transitions, 3563 flow [2024-06-27 18:45:35,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3563, PETRI_PLACES=305, PETRI_TRANSITIONS=291} [2024-06-27 18:45:35,799 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 18:45:35,799 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 291 transitions, 3563 flow [2024-06-27 18:45:35,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:35,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:35,799 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 18:45:35,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:45:35,799 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:35,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2027576457, now seen corresponding path program 1 times [2024-06-27 18:45:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040608850] [2024-06-27 18:45:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:35,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:37,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:37,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040608850] [2024-06-27 18:45:37,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040608850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:37,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:37,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:37,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421540664] [2024-06-27 18:45:37,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:37,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:37,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:37,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:37,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:37,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 291 transitions, 3563 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:37,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:37,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:37,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:39,108 INFO L124 PetriNetUnfolderBase]: 2611/4678 cut-off events. [2024-06-27 18:45:39,109 INFO L125 PetriNetUnfolderBase]: For 135469/135476 co-relation queries the response was YES. [2024-06-27 18:45:39,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28083 conditions, 4678 events. 2611/4678 cut-off events. For 135469/135476 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 32398 event pairs, 538 based on Foata normal form. 7/4635 useless extension candidates. Maximal degree in co-relation 27940. Up to 3974 conditions per place. [2024-06-27 18:45:39,168 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 306 selfloop transitions, 27 changer transitions 0/341 dead transitions. [2024-06-27 18:45:39,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 341 transitions, 4459 flow [2024-06-27 18:45:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:39,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:45:39,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:45:39,170 INFO L175 Difference]: Start difference. First operand has 305 places, 291 transitions, 3563 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:45:39,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 341 transitions, 4459 flow [2024-06-27 18:45:40,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 341 transitions, 4376 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:45:40,035 INFO L231 Difference]: Finished difference. Result has 309 places, 291 transitions, 3539 flow [2024-06-27 18:45:40,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3539, PETRI_PLACES=309, PETRI_TRANSITIONS=291} [2024-06-27 18:45:40,036 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-27 18:45:40,036 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 291 transitions, 3539 flow [2024-06-27 18:45:40,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:40,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:40,036 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 18:45:40,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:45:40,037 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:40,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:40,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1407768058, now seen corresponding path program 4 times [2024-06-27 18:45:40,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:40,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394567102] [2024-06-27 18:45:40,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:40,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:41,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:41,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394567102] [2024-06-27 18:45:41,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394567102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:41,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:41,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:41,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242954808] [2024-06-27 18:45:41,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:41,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:41,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 291 transitions, 3539 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:41,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:41,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:41,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:42,565 INFO L124 PetriNetUnfolderBase]: 2608/4673 cut-off events. [2024-06-27 18:45:42,565 INFO L125 PetriNetUnfolderBase]: For 132227/132234 co-relation queries the response was YES. [2024-06-27 18:45:42,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27784 conditions, 4673 events. 2608/4673 cut-off events. For 132227/132234 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 32330 event pairs, 537 based on Foata normal form. 7/4630 useless extension candidates. Maximal degree in co-relation 27641. Up to 3860 conditions per place. [2024-06-27 18:45:42,626 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 304 selfloop transitions, 29 changer transitions 0/341 dead transitions. [2024-06-27 18:45:42,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 341 transitions, 4431 flow [2024-06-27 18:45:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:45:42,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:45:42,627 INFO L175 Difference]: Start difference. First operand has 309 places, 291 transitions, 3539 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:45:42,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 341 transitions, 4431 flow [2024-06-27 18:45:43,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 341 transitions, 4335 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 18:45:43,293 INFO L231 Difference]: Finished difference. Result has 309 places, 291 transitions, 3506 flow [2024-06-27 18:45:43,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3443, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3506, PETRI_PLACES=309, PETRI_TRANSITIONS=291} [2024-06-27 18:45:43,294 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-27 18:45:43,294 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 291 transitions, 3506 flow [2024-06-27 18:45:43,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:43,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:43,294 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 18:45:43,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:45:43,295 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:43,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:43,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1551806458, now seen corresponding path program 5 times [2024-06-27 18:45:43,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:43,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301398413] [2024-06-27 18:45:43,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:43,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:44,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:44,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301398413] [2024-06-27 18:45:44,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301398413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:44,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:44,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:44,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691393711] [2024-06-27 18:45:44,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:44,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:44,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:44,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:44,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:44,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:44,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 291 transitions, 3506 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:45:44,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:44,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:44,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:45,185 INFO L124 PetriNetUnfolderBase]: 2620/4447 cut-off events. [2024-06-27 18:45:45,185 INFO L125 PetriNetUnfolderBase]: For 135074/135139 co-relation queries the response was YES. [2024-06-27 18:45:45,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27407 conditions, 4447 events. 2620/4447 cut-off events. For 135074/135139 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 28892 event pairs, 323 based on Foata normal form. 38/4418 useless extension candidates. Maximal degree in co-relation 27263. Up to 3130 conditions per place. [2024-06-27 18:45:45,246 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 233 selfloop transitions, 95 changer transitions 0/336 dead transitions. [2024-06-27 18:45:45,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 336 transitions, 4378 flow [2024-06-27 18:45:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 18:45:45,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108108108108108 [2024-06-27 18:45:45,247 INFO L175 Difference]: Start difference. First operand has 309 places, 291 transitions, 3506 flow. Second operand 10 states and 189 transitions. [2024-06-27 18:45:45,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 336 transitions, 4378 flow [2024-06-27 18:45:45,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 336 transitions, 4290 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 18:45:45,998 INFO L231 Difference]: Finished difference. Result has 308 places, 292 transitions, 3630 flow [2024-06-27 18:45:45,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3630, PETRI_PLACES=308, PETRI_TRANSITIONS=292} [2024-06-27 18:45:45,998 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-27 18:45:45,998 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 292 transitions, 3630 flow [2024-06-27 18:45:45,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:45:45,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:45,999 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 18:45:45,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:45:46,000 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:46,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:46,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1551806613, now seen corresponding path program 2 times [2024-06-27 18:45:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:46,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705364572] [2024-06-27 18:45:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:47,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:47,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705364572] [2024-06-27 18:45:47,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705364572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:47,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673891060] [2024-06-27 18:45:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:47,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:47,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:47,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:47,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:47,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:47,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 292 transitions, 3630 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:47,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:47,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:47,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:48,450 INFO L124 PetriNetUnfolderBase]: 2672/4546 cut-off events. [2024-06-27 18:45:48,451 INFO L125 PetriNetUnfolderBase]: For 147654/147719 co-relation queries the response was YES. [2024-06-27 18:45:48,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28398 conditions, 4546 events. 2672/4546 cut-off events. For 147654/147719 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 29913 event pairs, 276 based on Foata normal form. 38/4517 useless extension candidates. Maximal degree in co-relation 28255. Up to 2991 conditions per place. [2024-06-27 18:45:48,511 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 253 selfloop transitions, 97 changer transitions 0/358 dead transitions. [2024-06-27 18:45:48,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 358 transitions, 4875 flow [2024-06-27 18:45:48,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-27 18:45:48,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509009009009009 [2024-06-27 18:45:48,512 INFO L175 Difference]: Start difference. First operand has 308 places, 292 transitions, 3630 flow. Second operand 12 states and 226 transitions. [2024-06-27 18:45:48,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 358 transitions, 4875 flow [2024-06-27 18:45:49,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 358 transitions, 4669 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:49,278 INFO L231 Difference]: Finished difference. Result has 313 places, 296 transitions, 3702 flow [2024-06-27 18:45:49,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3430, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3702, PETRI_PLACES=313, PETRI_TRANSITIONS=296} [2024-06-27 18:45:49,279 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 18:45:49,280 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 296 transitions, 3702 flow [2024-06-27 18:45:49,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:49,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:49,281 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 18:45:49,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:45:49,281 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:49,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1551812193, now seen corresponding path program 3 times [2024-06-27 18:45:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424402375] [2024-06-27 18:45:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:49,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:50,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:50,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:50,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424402375] [2024-06-27 18:45:50,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424402375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:50,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:50,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:50,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947768597] [2024-06-27 18:45:50,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:50,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:50,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:50,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:50,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:50,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:50,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 296 transitions, 3702 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:50,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:50,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:50,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:51,760 INFO L124 PetriNetUnfolderBase]: 2690/4639 cut-off events. [2024-06-27 18:45:51,760 INFO L125 PetriNetUnfolderBase]: For 149763/149828 co-relation queries the response was YES. [2024-06-27 18:45:51,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28894 conditions, 4639 events. 2690/4639 cut-off events. For 149763/149828 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30854 event pairs, 369 based on Foata normal form. 38/4610 useless extension candidates. Maximal degree in co-relation 28749. Up to 2142 conditions per place. [2024-06-27 18:45:51,819 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 212 selfloop transitions, 133 changer transitions 0/353 dead transitions. [2024-06-27 18:45:51,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 353 transitions, 5154 flow [2024-06-27 18:45:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:45:51,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282555282555282 [2024-06-27 18:45:51,821 INFO L175 Difference]: Start difference. First operand has 313 places, 296 transitions, 3702 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:45:51,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 353 transitions, 5154 flow [2024-06-27 18:45:52,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 353 transitions, 4924 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:52,833 INFO L231 Difference]: Finished difference. Result has 314 places, 298 transitions, 3779 flow [2024-06-27 18:45:52,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3779, PETRI_PLACES=314, PETRI_TRANSITIONS=298} [2024-06-27 18:45:52,834 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-27 18:45:52,834 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 298 transitions, 3779 flow [2024-06-27 18:45:52,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:52,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:52,834 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 18:45:52,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:45:52,835 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:52,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:52,835 INFO L85 PathProgramCache]: Analyzing trace with hash -923952563, now seen corresponding path program 4 times [2024-06-27 18:45:52,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:52,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772683951] [2024-06-27 18:45:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:52,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:53,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:53,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772683951] [2024-06-27 18:45:53,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772683951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:53,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:53,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12680969] [2024-06-27 18:45:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:53,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:54,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:54,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 298 transitions, 3779 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:54,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:54,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:54,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:55,243 INFO L124 PetriNetUnfolderBase]: 2686/4633 cut-off events. [2024-06-27 18:45:55,243 INFO L125 PetriNetUnfolderBase]: For 146950/147015 co-relation queries the response was YES. [2024-06-27 18:45:55,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28817 conditions, 4633 events. 2686/4633 cut-off events. For 146950/147015 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30804 event pairs, 362 based on Foata normal form. 38/4604 useless extension candidates. Maximal degree in co-relation 28672. Up to 2139 conditions per place. [2024-06-27 18:45:55,303 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 204 selfloop transitions, 141 changer transitions 0/353 dead transitions. [2024-06-27 18:45:55,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 353 transitions, 5201 flow [2024-06-27 18:45:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:45:55,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257985257985258 [2024-06-27 18:45:55,305 INFO L175 Difference]: Start difference. First operand has 314 places, 298 transitions, 3779 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:45:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 353 transitions, 5201 flow [2024-06-27 18:45:56,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 353 transitions, 4932 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:56,271 INFO L231 Difference]: Finished difference. Result has 317 places, 298 transitions, 3797 flow [2024-06-27 18:45:56,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3797, PETRI_PLACES=317, PETRI_TRANSITIONS=298} [2024-06-27 18:45:56,271 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-27 18:45:56,272 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 298 transitions, 3797 flow [2024-06-27 18:45:56,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:56,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:56,272 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 18:45:56,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:45:56,272 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:56,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash -923944627, now seen corresponding path program 1 times [2024-06-27 18:45:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:56,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483485816] [2024-06-27 18:45:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:56,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483485816] [2024-06-27 18:45:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483485816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:57,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:57,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056169759] [2024-06-27 18:45:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:57,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:57,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:45:57,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 298 transitions, 3797 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:57,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:57,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:45:57,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:58,593 INFO L124 PetriNetUnfolderBase]: 2703/4986 cut-off events. [2024-06-27 18:45:58,593 INFO L125 PetriNetUnfolderBase]: For 151991/152048 co-relation queries the response was YES. [2024-06-27 18:45:58,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29484 conditions, 4986 events. 2703/4986 cut-off events. For 151991/152048 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 36055 event pairs, 408 based on Foata normal form. 40/4980 useless extension candidates. Maximal degree in co-relation 29339. Up to 3765 conditions per place. [2024-06-27 18:45:58,657 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 282 selfloop transitions, 54 changer transitions 0/344 dead transitions. [2024-06-27 18:45:58,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 344 transitions, 4681 flow [2024-06-27 18:45:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:45:58,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:45:58,658 INFO L175 Difference]: Start difference. First operand has 317 places, 298 transitions, 3797 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:45:58,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 344 transitions, 4681 flow [2024-06-27 18:45:59,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 344 transitions, 4389 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:59,416 INFO L231 Difference]: Finished difference. Result has 317 places, 299 transitions, 3627 flow [2024-06-27 18:45:59,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3627, PETRI_PLACES=317, PETRI_TRANSITIONS=299} [2024-06-27 18:45:59,417 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-27 18:45:59,417 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 299 transitions, 3627 flow [2024-06-27 18:45:59,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:45:59,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:59,417 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 18:45:59,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:45:59,418 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:59,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1546444078, now seen corresponding path program 6 times [2024-06-27 18:45:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:59,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829076181] [2024-06-27 18:45:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:59,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:00,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:00,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829076181] [2024-06-27 18:46:00,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829076181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:00,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:00,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:00,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607294035] [2024-06-27 18:46:00,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:00,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:00,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:00,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:00,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 299 transitions, 3627 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:46:00,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:00,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:00,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:01,561 INFO L124 PetriNetUnfolderBase]: 2718/4605 cut-off events. [2024-06-27 18:46:01,561 INFO L125 PetriNetUnfolderBase]: For 150916/150981 co-relation queries the response was YES. [2024-06-27 18:46:01,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28360 conditions, 4605 events. 2718/4605 cut-off events. For 150916/150981 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30111 event pairs, 335 based on Foata normal form. 38/4576 useless extension candidates. Maximal degree in co-relation 28214. Up to 3288 conditions per place. [2024-06-27 18:46:01,612 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 247 selfloop transitions, 89 changer transitions 0/344 dead transitions. [2024-06-27 18:46:01,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 344 transitions, 4517 flow [2024-06-27 18:46:01,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:46:01,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:46:01,613 INFO L175 Difference]: Start difference. First operand has 317 places, 299 transitions, 3627 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:46:01,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 344 transitions, 4517 flow [2024-06-27 18:46:02,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 344 transitions, 4405 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:02,533 INFO L231 Difference]: Finished difference. Result has 319 places, 300 transitions, 3717 flow [2024-06-27 18:46:02,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3717, PETRI_PLACES=319, PETRI_TRANSITIONS=300} [2024-06-27 18:46:02,534 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-27 18:46:02,534 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 300 transitions, 3717 flow [2024-06-27 18:46:02,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:46:02,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:02,534 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 18:46:02,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:46:02,534 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:02,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash -929670358, now seen corresponding path program 7 times [2024-06-27 18:46:02,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:02,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260688484] [2024-06-27 18:46:02,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:02,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:03,561 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 18:46:03,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:03,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260688484] [2024-06-27 18:46:03,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260688484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:03,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:03,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771148015] [2024-06-27 18:46:03,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:03,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:03,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:03,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:03,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 300 transitions, 3717 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:03,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:03,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:03,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:04,977 INFO L124 PetriNetUnfolderBase]: 2738/4610 cut-off events. [2024-06-27 18:46:04,978 INFO L125 PetriNetUnfolderBase]: For 155505/155570 co-relation queries the response was YES. [2024-06-27 18:46:05,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28777 conditions, 4610 events. 2738/4610 cut-off events. For 155505/155570 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 30052 event pairs, 318 based on Foata normal form. 38/4581 useless extension candidates. Maximal degree in co-relation 28630. Up to 3562 conditions per place. [2024-06-27 18:46:05,027 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 273 selfloop transitions, 73 changer transitions 0/354 dead transitions. [2024-06-27 18:46:05,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 354 transitions, 4714 flow [2024-06-27 18:46:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:46:05,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-27 18:46:05,028 INFO L175 Difference]: Start difference. First operand has 319 places, 300 transitions, 3717 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:46:05,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 354 transitions, 4714 flow [2024-06-27 18:46:05,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 354 transitions, 4518 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:05,985 INFO L231 Difference]: Finished difference. Result has 323 places, 304 transitions, 3797 flow [2024-06-27 18:46:05,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3797, PETRI_PLACES=323, PETRI_TRANSITIONS=304} [2024-06-27 18:46:05,985 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-27 18:46:05,985 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 304 transitions, 3797 flow [2024-06-27 18:46:05,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:05,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:05,986 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 18:46:05,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:46:05,986 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:05,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -929522333, now seen corresponding path program 5 times [2024-06-27 18:46:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:05,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579127308] [2024-06-27 18:46:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:07,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:07,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579127308] [2024-06-27 18:46:07,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579127308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:07,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:07,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:07,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089345045] [2024-06-27 18:46:07,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:07,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:07,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:07,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:07,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:07,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 304 transitions, 3797 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:07,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:07,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:07,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:08,772 INFO L124 PetriNetUnfolderBase]: 2837/4819 cut-off events. [2024-06-27 18:46:08,773 INFO L125 PetriNetUnfolderBase]: For 161894/161975 co-relation queries the response was YES. [2024-06-27 18:46:08,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30166 conditions, 4819 events. 2837/4819 cut-off events. For 161894/161975 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 32065 event pairs, 251 based on Foata normal form. 50/4795 useless extension candidates. Maximal degree in co-relation 30017. Up to 2995 conditions per place. [2024-06-27 18:46:08,831 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 259 selfloop transitions, 125 changer transitions 0/392 dead transitions. [2024-06-27 18:46:08,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 392 transitions, 5556 flow [2024-06-27 18:46:08,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:46:08,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282555282555282 [2024-06-27 18:46:08,832 INFO L175 Difference]: Start difference. First operand has 323 places, 304 transitions, 3797 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:46:08,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 392 transitions, 5556 flow [2024-06-27 18:46:09,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 392 transitions, 5433 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:09,759 INFO L231 Difference]: Finished difference. Result has 332 places, 327 transitions, 4483 flow [2024-06-27 18:46:09,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4483, PETRI_PLACES=332, PETRI_TRANSITIONS=327} [2024-06-27 18:46:09,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-27 18:46:09,759 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 327 transitions, 4483 flow [2024-06-27 18:46:09,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:09,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:09,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:09,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:46:09,760 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:09,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:09,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1546449813, now seen corresponding path program 6 times [2024-06-27 18:46:09,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:09,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952127356] [2024-06-27 18:46:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:10,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952127356] [2024-06-27 18:46:10,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952127356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:10,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:10,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700013858] [2024-06-27 18:46:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:10,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:10,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:11,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:11,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 327 transitions, 4483 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:11,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:11,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:11,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:12,485 INFO L124 PetriNetUnfolderBase]: 2829/4879 cut-off events. [2024-06-27 18:46:12,485 INFO L125 PetriNetUnfolderBase]: For 161605/161701 co-relation queries the response was YES. [2024-06-27 18:46:12,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31226 conditions, 4879 events. 2829/4879 cut-off events. For 161605/161701 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 32901 event pairs, 413 based on Foata normal form. 61/4867 useless extension candidates. Maximal degree in co-relation 31072. Up to 2355 conditions per place. [2024-06-27 18:46:12,546 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 241 selfloop transitions, 131 changer transitions 0/380 dead transitions. [2024-06-27 18:46:12,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 380 transitions, 5641 flow [2024-06-27 18:46:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:46:12,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282555282555282 [2024-06-27 18:46:12,548 INFO L175 Difference]: Start difference. First operand has 332 places, 327 transitions, 4483 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:46:12,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 380 transitions, 5641 flow [2024-06-27 18:46:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 380 transitions, 5361 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-27 18:46:13,604 INFO L231 Difference]: Finished difference. Result has 340 places, 327 transitions, 4481 flow [2024-06-27 18:46:13,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4203, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4481, PETRI_PLACES=340, PETRI_TRANSITIONS=327} [2024-06-27 18:46:13,605 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 18:46:13,605 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 327 transitions, 4481 flow [2024-06-27 18:46:13,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:13,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:13,605 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 18:46:13,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:46:13,606 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:13,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1903309245, now seen corresponding path program 7 times [2024-06-27 18:46:13,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:13,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052938716] [2024-06-27 18:46:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:13,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:14,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:14,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052938716] [2024-06-27 18:46:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052938716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:14,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:14,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52768000] [2024-06-27 18:46:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:14,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:14,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:14,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:14,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 327 transitions, 4481 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:14,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:14,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:14,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:16,183 INFO L124 PetriNetUnfolderBase]: 2843/4978 cut-off events. [2024-06-27 18:46:16,184 INFO L125 PetriNetUnfolderBase]: For 161476/161585 co-relation queries the response was YES. [2024-06-27 18:46:16,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31795 conditions, 4978 events. 2843/4978 cut-off events. For 161476/161585 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 34264 event pairs, 566 based on Foata normal form. 59/4960 useless extension candidates. Maximal degree in co-relation 31640. Up to 3792 conditions per place. [2024-06-27 18:46:16,248 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 308 selfloop transitions, 60 changer transitions 0/376 dead transitions. [2024-06-27 18:46:16,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 376 transitions, 5991 flow [2024-06-27 18:46:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 18:46:16,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 18:46:16,249 INFO L175 Difference]: Start difference. First operand has 340 places, 327 transitions, 4481 flow. Second operand 10 states and 195 transitions. [2024-06-27 18:46:16,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 376 transitions, 5991 flow [2024-06-27 18:46:17,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 376 transitions, 5612 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-27 18:46:17,214 INFO L231 Difference]: Finished difference. Result has 337 places, 329 transitions, 4271 flow [2024-06-27 18:46:17,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4112, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4271, PETRI_PLACES=337, PETRI_TRANSITIONS=329} [2024-06-27 18:46:17,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-27 18:46:17,214 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 329 transitions, 4271 flow [2024-06-27 18:46:17,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:17,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:17,215 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 18:46:17,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:46:17,215 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:17,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1709168025, now seen corresponding path program 8 times [2024-06-27 18:46:17,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:17,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795215271] [2024-06-27 18:46:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:18,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:18,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795215271] [2024-06-27 18:46:18,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795215271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54714761] [2024-06-27 18:46:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:18,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:18,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:18,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:18,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 329 transitions, 4271 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:18,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:18,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:18,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:20,376 INFO L124 PetriNetUnfolderBase]: 2865/5057 cut-off events. [2024-06-27 18:46:20,376 INFO L125 PetriNetUnfolderBase]: For 158240/158331 co-relation queries the response was YES. [2024-06-27 18:46:20,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31191 conditions, 5057 events. 2865/5057 cut-off events. For 158240/158331 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 35170 event pairs, 619 based on Foata normal form. 37/5007 useless extension candidates. Maximal degree in co-relation 31037. Up to 4126 conditions per place. [2024-06-27 18:46:20,447 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 326 selfloop transitions, 46 changer transitions 0/380 dead transitions. [2024-06-27 18:46:20,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 380 transitions, 5453 flow [2024-06-27 18:46:20,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:46:20,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-27 18:46:20,448 INFO L175 Difference]: Start difference. First operand has 337 places, 329 transitions, 4271 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:46:20,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 380 transitions, 5453 flow [2024-06-27 18:46:21,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 380 transitions, 5251 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:21,545 INFO L231 Difference]: Finished difference. Result has 338 places, 331 transitions, 4202 flow [2024-06-27 18:46:21,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4202, PETRI_PLACES=338, PETRI_TRANSITIONS=331} [2024-06-27 18:46:21,545 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 18:46:21,545 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 331 transitions, 4202 flow [2024-06-27 18:46:21,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:21,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:21,546 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 18:46:21,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:46:21,546 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:21,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1709160089, now seen corresponding path program 2 times [2024-06-27 18:46:21,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:21,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823987100] [2024-06-27 18:46:21,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823987100] [2024-06-27 18:46:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823987100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:22,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:22,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:22,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095462567] [2024-06-27 18:46:22,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:22,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:22,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:22,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 331 transitions, 4202 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:22,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:22,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:22,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:24,106 INFO L124 PetriNetUnfolderBase]: 2885/5072 cut-off events. [2024-06-27 18:46:24,106 INFO L125 PetriNetUnfolderBase]: For 157279/157376 co-relation queries the response was YES. [2024-06-27 18:46:24,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30878 conditions, 5072 events. 2885/5072 cut-off events. For 157279/157376 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 35183 event pairs, 642 based on Foata normal form. 41/5022 useless extension candidates. Maximal degree in co-relation 30725. Up to 4349 conditions per place. [2024-06-27 18:46:24,175 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 333 selfloop transitions, 33 changer transitions 0/374 dead transitions. [2024-06-27 18:46:24,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 374 transitions, 5140 flow [2024-06-27 18:46:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:46:24,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:46:24,176 INFO L175 Difference]: Start difference. First operand has 338 places, 331 transitions, 4202 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:46:24,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 374 transitions, 5140 flow [2024-06-27 18:46:25,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 374 transitions, 5045 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:25,054 INFO L231 Difference]: Finished difference. Result has 340 places, 332 transitions, 4191 flow [2024-06-27 18:46:25,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4107, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4191, PETRI_PLACES=340, PETRI_TRANSITIONS=332} [2024-06-27 18:46:25,055 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 18:46:25,055 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 332 transitions, 4191 flow [2024-06-27 18:46:25,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:25,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:25,055 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 18:46:25,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:46:25,056 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:25,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:25,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1709375570, now seen corresponding path program 8 times [2024-06-27 18:46:25,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:25,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442754960] [2024-06-27 18:46:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:25,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:26,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442754960] [2024-06-27 18:46:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442754960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:26,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:26,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885466515] [2024-06-27 18:46:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:26,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:26,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:26,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 332 transitions, 4191 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:26,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:26,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:26,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:27,554 INFO L124 PetriNetUnfolderBase]: 2985/5260 cut-off events. [2024-06-27 18:46:27,555 INFO L125 PetriNetUnfolderBase]: For 208825/208922 co-relation queries the response was YES. [2024-06-27 18:46:27,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31711 conditions, 5260 events. 2985/5260 cut-off events. For 208825/208922 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 36837 event pairs, 658 based on Foata normal form. 53/5224 useless extension candidates. Maximal degree in co-relation 31557. Up to 4297 conditions per place. [2024-06-27 18:46:27,623 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 36 changer transitions 0/380 dead transitions. [2024-06-27 18:46:27,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 380 transitions, 5211 flow [2024-06-27 18:46:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:27,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:46:27,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:46:27,624 INFO L175 Difference]: Start difference. First operand has 340 places, 332 transitions, 4191 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:46:27,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 380 transitions, 5211 flow [2024-06-27 18:46:28,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 380 transitions, 5137 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:28,597 INFO L231 Difference]: Finished difference. Result has 342 places, 333 transitions, 4221 flow [2024-06-27 18:46:28,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4221, PETRI_PLACES=342, PETRI_TRANSITIONS=333} [2024-06-27 18:46:28,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-27 18:46:28,598 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 333 transitions, 4221 flow [2024-06-27 18:46:28,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:28,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:28,598 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 18:46:28,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:46:28,598 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:28,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1709369835, now seen corresponding path program 9 times [2024-06-27 18:46:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:28,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198464718] [2024-06-27 18:46:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:29,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:29,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198464718] [2024-06-27 18:46:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198464718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:29,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:29,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:29,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030964343] [2024-06-27 18:46:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:29,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:29,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:29,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:29,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:29,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 333 transitions, 4221 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:29,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:29,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:29,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:30,986 INFO L124 PetriNetUnfolderBase]: 2981/5266 cut-off events. [2024-06-27 18:46:30,986 INFO L125 PetriNetUnfolderBase]: For 157208/157305 co-relation queries the response was YES. [2024-06-27 18:46:31,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31574 conditions, 5266 events. 2981/5266 cut-off events. For 157208/157305 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 37049 event pairs, 651 based on Foata normal form. 41/5220 useless extension candidates. Maximal degree in co-relation 31419. Up to 4432 conditions per place. [2024-06-27 18:46:31,057 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 333 selfloop transitions, 40 changer transitions 0/381 dead transitions. [2024-06-27 18:46:31,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 381 transitions, 5193 flow [2024-06-27 18:46:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:31,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:46:31,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:46:31,058 INFO L175 Difference]: Start difference. First operand has 342 places, 333 transitions, 4221 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:46:31,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 381 transitions, 5193 flow [2024-06-27 18:46:32,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 381 transitions, 5099 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:32,015 INFO L231 Difference]: Finished difference. Result has 345 places, 333 transitions, 4212 flow [2024-06-27 18:46:32,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4127, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4212, PETRI_PLACES=345, PETRI_TRANSITIONS=333} [2024-06-27 18:46:32,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-27 18:46:32,016 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 333 transitions, 4212 flow [2024-06-27 18:46:32,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:32,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:32,016 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 18:46:32,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:46:32,016 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:32,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1701750779, now seen corresponding path program 3 times [2024-06-27 18:46:32,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:32,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180453032] [2024-06-27 18:46:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:33,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:33,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180453032] [2024-06-27 18:46:33,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180453032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:33,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:33,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:33,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476240514] [2024-06-27 18:46:33,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:33,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:33,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:33,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:33,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 333 transitions, 4212 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:33,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:33,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:33,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:34,386 INFO L124 PetriNetUnfolderBase]: 3001/5282 cut-off events. [2024-06-27 18:46:34,387 INFO L125 PetriNetUnfolderBase]: For 159279/159364 co-relation queries the response was YES. [2024-06-27 18:46:34,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31706 conditions, 5282 events. 3001/5282 cut-off events. For 159279/159364 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 37129 event pairs, 705 based on Foata normal form. 33/5223 useless extension candidates. Maximal degree in co-relation 31550. Up to 4596 conditions per place. [2024-06-27 18:46:34,457 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 337 selfloop transitions, 31 changer transitions 0/376 dead transitions. [2024-06-27 18:46:34,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 376 transitions, 5165 flow [2024-06-27 18:46:34,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 18:46:34,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 18:46:34,458 INFO L175 Difference]: Start difference. First operand has 345 places, 333 transitions, 4212 flow. Second operand 10 states and 176 transitions. [2024-06-27 18:46:34,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 376 transitions, 5165 flow [2024-06-27 18:46:35,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 376 transitions, 5051 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 18:46:35,367 INFO L231 Difference]: Finished difference. Result has 345 places, 335 transitions, 4198 flow [2024-06-27 18:46:35,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4198, PETRI_PLACES=345, PETRI_TRANSITIONS=335} [2024-06-27 18:46:35,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-27 18:46:35,368 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 335 transitions, 4198 flow [2024-06-27 18:46:35,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:35,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:35,368 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 18:46:35,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:46:35,368 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:35,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:35,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1903314980, now seen corresponding path program 9 times [2024-06-27 18:46:35,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:35,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930423835] [2024-06-27 18:46:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:35,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:36,372 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 18:46:36,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:36,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930423835] [2024-06-27 18:46:36,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930423835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:36,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:36,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:36,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131095828] [2024-06-27 18:46:36,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:36,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:36,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:36,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:36,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:36,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:36,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 335 transitions, 4198 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:46:36,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:36,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:36,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:37,688 INFO L124 PetriNetUnfolderBase]: 3013/5425 cut-off events. [2024-06-27 18:46:37,689 INFO L125 PetriNetUnfolderBase]: For 162934/163025 co-relation queries the response was YES. [2024-06-27 18:46:37,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31982 conditions, 5425 events. 3013/5425 cut-off events. For 162934/163025 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 39045 event pairs, 665 based on Foata normal form. 45/5389 useless extension candidates. Maximal degree in co-relation 31824. Up to 4429 conditions per place. [2024-06-27 18:46:37,761 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 322 selfloop transitions, 48 changer transitions 0/378 dead transitions. [2024-06-27 18:46:37,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 378 transitions, 5158 flow [2024-06-27 18:46:37,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:37,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:46:37,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:46:37,763 INFO L175 Difference]: Start difference. First operand has 345 places, 335 transitions, 4198 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:46:37,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 378 transitions, 5158 flow [2024-06-27 18:46:38,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 378 transitions, 5089 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:38,873 INFO L231 Difference]: Finished difference. Result has 348 places, 336 transitions, 4257 flow [2024-06-27 18:46:38,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4129, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4257, PETRI_PLACES=348, PETRI_TRANSITIONS=336} [2024-06-27 18:46:38,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 307 predicate places. [2024-06-27 18:46:38,873 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 336 transitions, 4257 flow [2024-06-27 18:46:38,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:46:38,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:38,874 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 18:46:38,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:46:38,874 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:38,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1903099499, now seen corresponding path program 4 times [2024-06-27 18:46:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:38,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879013370] [2024-06-27 18:46:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:40,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879013370] [2024-06-27 18:46:40,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879013370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:40,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:40,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:40,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435198805] [2024-06-27 18:46:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:40,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:40,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:40,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:40,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:40,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:40,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 336 transitions, 4257 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:40,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:40,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:40,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:41,535 INFO L124 PetriNetUnfolderBase]: 3032/5357 cut-off events. [2024-06-27 18:46:41,536 INFO L125 PetriNetUnfolderBase]: For 167163/167276 co-relation queries the response was YES. [2024-06-27 18:46:41,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32142 conditions, 5357 events. 3032/5357 cut-off events. For 167163/167276 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 37852 event pairs, 695 based on Foata normal form. 61/5330 useless extension candidates. Maximal degree in co-relation 31983. Up to 4571 conditions per place. [2024-06-27 18:46:41,607 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 334 selfloop transitions, 38 changer transitions 0/380 dead transitions. [2024-06-27 18:46:41,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 380 transitions, 5215 flow [2024-06-27 18:46:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:46:41,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 18:46:41,608 INFO L175 Difference]: Start difference. First operand has 348 places, 336 transitions, 4257 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:46:41,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 380 transitions, 5215 flow [2024-06-27 18:46:42,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 380 transitions, 5099 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:42,681 INFO L231 Difference]: Finished difference. Result has 350 places, 337 transitions, 4239 flow [2024-06-27 18:46:42,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4141, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4239, PETRI_PLACES=350, PETRI_TRANSITIONS=337} [2024-06-27 18:46:42,682 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-27 18:46:42,682 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 337 transitions, 4239 flow [2024-06-27 18:46:42,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:42,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:42,682 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 18:46:42,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:46:42,683 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:42,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:42,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1701741479, now seen corresponding path program 5 times [2024-06-27 18:46:42,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:42,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049709817] [2024-06-27 18:46:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:42,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:44,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049709817] [2024-06-27 18:46:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049709817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:44,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:44,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:44,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095870840] [2024-06-27 18:46:44,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:44,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:44,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:44,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:44,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:44,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:44,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 337 transitions, 4239 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:44,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:44,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:44,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:45,579 INFO L124 PetriNetUnfolderBase]: 3048/5373 cut-off events. [2024-06-27 18:46:45,579 INFO L125 PetriNetUnfolderBase]: For 168844/168934 co-relation queries the response was YES. [2024-06-27 18:46:45,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32177 conditions, 5373 events. 3048/5373 cut-off events. For 168844/168934 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 38080 event pairs, 719 based on Foata normal form. 38/5316 useless extension candidates. Maximal degree in co-relation 32017. Up to 4673 conditions per place. [2024-06-27 18:46:45,655 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 341 selfloop transitions, 30 changer transitions 0/379 dead transitions. [2024-06-27 18:46:45,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 379 transitions, 5187 flow [2024-06-27 18:46:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:46:45,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:46:45,656 INFO L175 Difference]: Start difference. First operand has 350 places, 337 transitions, 4239 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:46:45,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 379 transitions, 5187 flow [2024-06-27 18:46:46,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 379 transitions, 5099 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:46,632 INFO L231 Difference]: Finished difference. Result has 352 places, 338 transitions, 4235 flow [2024-06-27 18:46:46,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4151, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4235, PETRI_PLACES=352, PETRI_TRANSITIONS=338} [2024-06-27 18:46:46,632 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-27 18:46:46,632 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 338 transitions, 4235 flow [2024-06-27 18:46:46,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:46,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:46,633 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 18:46:46,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:46:46,633 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:46,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash -89670895, now seen corresponding path program 10 times [2024-06-27 18:46:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:46,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920142300] [2024-06-27 18:46:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:46,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:47,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:47,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920142300] [2024-06-27 18:46:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920142300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:47,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:47,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935249356] [2024-06-27 18:46:47,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:47,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:48,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:48,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 338 transitions, 4235 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:48,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:48,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:48,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:49,494 INFO L124 PetriNetUnfolderBase]: 3044/5422 cut-off events. [2024-06-27 18:46:49,494 INFO L125 PetriNetUnfolderBase]: For 162464/162561 co-relation queries the response was YES. [2024-06-27 18:46:49,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31970 conditions, 5422 events. 3044/5422 cut-off events. For 162464/162561 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 38591 event pairs, 604 based on Foata normal form. 47/5392 useless extension candidates. Maximal degree in co-relation 31809. Up to 4139 conditions per place. [2024-06-27 18:46:49,572 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 313 selfloop transitions, 67 changer transitions 0/388 dead transitions. [2024-06-27 18:46:49,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 388 transitions, 5417 flow [2024-06-27 18:46:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:46:49,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061425061425061 [2024-06-27 18:46:49,573 INFO L175 Difference]: Start difference. First operand has 352 places, 338 transitions, 4235 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:46:49,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 388 transitions, 5417 flow [2024-06-27 18:46:50,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 388 transitions, 5331 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:50,583 INFO L231 Difference]: Finished difference. Result has 355 places, 338 transitions, 4288 flow [2024-06-27 18:46:50,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4149, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4288, PETRI_PLACES=355, PETRI_TRANSITIONS=338} [2024-06-27 18:46:50,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 18:46:50,583 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 338 transitions, 4288 flow [2024-06-27 18:46:50,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:50,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:50,584 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 18:46:50,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:46:50,584 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:50,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -84106705, now seen corresponding path program 11 times [2024-06-27 18:46:50,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:50,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89533837] [2024-06-27 18:46:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:50,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:52,104 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 18:46:52,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:52,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89533837] [2024-06-27 18:46:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89533837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:52,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:52,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:52,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505627595] [2024-06-27 18:46:52,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:52,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:52,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:52,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:52,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 338 transitions, 4288 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:52,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:52,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:52,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:53,683 INFO L124 PetriNetUnfolderBase]: 3040/5437 cut-off events. [2024-06-27 18:46:53,684 INFO L125 PetriNetUnfolderBase]: For 156452/156561 co-relation queries the response was YES. [2024-06-27 18:46:53,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31962 conditions, 5437 events. 3040/5437 cut-off events. For 156452/156561 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 39033 event pairs, 653 based on Foata normal form. 49/5405 useless extension candidates. Maximal degree in co-relation 31800. Up to 4387 conditions per place. [2024-06-27 18:46:53,881 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 327 selfloop transitions, 52 changer transitions 0/387 dead transitions. [2024-06-27 18:46:53,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 387 transitions, 5276 flow [2024-06-27 18:46:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:53,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:53,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:46:53,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-27 18:46:53,883 INFO L175 Difference]: Start difference. First operand has 355 places, 338 transitions, 4288 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:46:53,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 387 transitions, 5276 flow [2024-06-27 18:46:54,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 387 transitions, 5117 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:54,669 INFO L231 Difference]: Finished difference. Result has 356 places, 338 transitions, 4238 flow [2024-06-27 18:46:54,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4129, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4238, PETRI_PLACES=356, PETRI_TRANSITIONS=338} [2024-06-27 18:46:54,670 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-27 18:46:54,670 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 338 transitions, 4238 flow [2024-06-27 18:46:54,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:54,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:54,670 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 18:46:54,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:46:54,670 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:54,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1908825230, now seen corresponding path program 10 times [2024-06-27 18:46:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:54,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290681875] [2024-06-27 18:46:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:55,824 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 18:46:55,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:55,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290681875] [2024-06-27 18:46:55,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290681875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:55,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:55,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:55,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107161605] [2024-06-27 18:46:55,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:55,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:55,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:55,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:55,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:55,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 338 transitions, 4238 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:55,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:55,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:55,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:57,359 INFO L124 PetriNetUnfolderBase]: 3079/5469 cut-off events. [2024-06-27 18:46:57,359 INFO L125 PetriNetUnfolderBase]: For 170265/170362 co-relation queries the response was YES. [2024-06-27 18:46:57,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32494 conditions, 5469 events. 3079/5469 cut-off events. For 170265/170362 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 38985 event pairs, 659 based on Foata normal form. 47/5431 useless extension candidates. Maximal degree in co-relation 32331. Up to 4258 conditions per place. [2024-06-27 18:46:57,424 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 332 selfloop transitions, 56 changer transitions 0/396 dead transitions. [2024-06-27 18:46:57,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 396 transitions, 5554 flow [2024-06-27 18:46:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:57,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:46:57,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515970515970516 [2024-06-27 18:46:57,425 INFO L175 Difference]: Start difference. First operand has 356 places, 338 transitions, 4238 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:46:57,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 396 transitions, 5554 flow [2024-06-27 18:46:58,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 396 transitions, 5439 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:58,329 INFO L231 Difference]: Finished difference. Result has 357 places, 340 transitions, 4297 flow [2024-06-27 18:46:58,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4297, PETRI_PLACES=357, PETRI_TRANSITIONS=340} [2024-06-27 18:46:58,329 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-27 18:46:58,329 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 340 transitions, 4297 flow [2024-06-27 18:46:58,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:46:58,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:58,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:58,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:46:58,330 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:58,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1908677360, now seen corresponding path program 11 times [2024-06-27 18:46:58,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:58,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860389116] [2024-06-27 18:46:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:58,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:59,173 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 18:46:59,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:59,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860389116] [2024-06-27 18:46:59,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860389116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:59,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:59,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:59,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609540386] [2024-06-27 18:46:59,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:59,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:59,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:59,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:59,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:46:59,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 340 transitions, 4297 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:46:59,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:59,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:46:59,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:00,604 INFO L124 PetriNetUnfolderBase]: 3079/5517 cut-off events. [2024-06-27 18:47:00,604 INFO L125 PetriNetUnfolderBase]: For 164025/164122 co-relation queries the response was YES. [2024-06-27 18:47:00,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32467 conditions, 5517 events. 3079/5517 cut-off events. For 164025/164122 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 39625 event pairs, 699 based on Foata normal form. 47/5483 useless extension candidates. Maximal degree in co-relation 32303. Up to 4537 conditions per place. [2024-06-27 18:47:00,668 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 325 selfloop transitions, 50 changer transitions 0/383 dead transitions. [2024-06-27 18:47:00,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 383 transitions, 5245 flow [2024-06-27 18:47:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:47:00,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:47:00,669 INFO L175 Difference]: Start difference. First operand has 357 places, 340 transitions, 4297 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:47:00,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 383 transitions, 5245 flow [2024-06-27 18:47:01,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 383 transitions, 5138 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:47:01,607 INFO L231 Difference]: Finished difference. Result has 360 places, 340 transitions, 4295 flow [2024-06-27 18:47:01,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4295, PETRI_PLACES=360, PETRI_TRANSITIONS=340} [2024-06-27 18:47:01,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2024-06-27 18:47:01,608 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 340 transitions, 4295 flow [2024-06-27 18:47:01,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:47:01,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:01,608 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 18:47:01,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:47:01,608 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:01,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1429849199, now seen corresponding path program 6 times [2024-06-27 18:47:01,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:01,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171014951] [2024-06-27 18:47:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:02,815 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 18:47:02,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:02,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171014951] [2024-06-27 18:47:02,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171014951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:02,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:02,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:02,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045681290] [2024-06-27 18:47:02,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:02,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:02,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:02,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:02,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:02,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 340 transitions, 4295 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:02,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:02,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:02,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:04,209 INFO L124 PetriNetUnfolderBase]: 3086/5348 cut-off events. [2024-06-27 18:47:04,210 INFO L125 PetriNetUnfolderBase]: For 167284/167455 co-relation queries the response was YES. [2024-06-27 18:47:04,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32252 conditions, 5348 events. 3086/5348 cut-off events. For 167284/167455 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 37312 event pairs, 851 based on Foata normal form. 83/5322 useless extension candidates. Maximal degree in co-relation 32086. Up to 4675 conditions per place. [2024-06-27 18:47:04,275 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 339 selfloop transitions, 32 changer transitions 0/379 dead transitions. [2024-06-27 18:47:04,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 379 transitions, 5227 flow [2024-06-27 18:47:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:47:04,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:47:04,276 INFO L175 Difference]: Start difference. First operand has 360 places, 340 transitions, 4295 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:47:04,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 379 transitions, 5227 flow [2024-06-27 18:47:05,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 379 transitions, 5109 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:05,198 INFO L231 Difference]: Finished difference. Result has 361 places, 341 transitions, 4267 flow [2024-06-27 18:47:05,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4177, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4267, PETRI_PLACES=361, PETRI_TRANSITIONS=341} [2024-06-27 18:47:05,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-27 18:47:05,198 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 341 transitions, 4267 flow [2024-06-27 18:47:05,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:05,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:05,199 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 18:47:05,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:47:05,199 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:05,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash -970956199, now seen corresponding path program 12 times [2024-06-27 18:47:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:05,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756412459] [2024-06-27 18:47:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:05,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:06,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756412459] [2024-06-27 18:47:06,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756412459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:06,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:06,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:06,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799566962] [2024-06-27 18:47:06,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:06,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:06,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:06,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:06,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 341 transitions, 4267 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:06,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:06,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:06,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:07,900 INFO L124 PetriNetUnfolderBase]: 3111/5362 cut-off events. [2024-06-27 18:47:07,900 INFO L125 PetriNetUnfolderBase]: For 168645/168812 co-relation queries the response was YES. [2024-06-27 18:47:07,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32336 conditions, 5362 events. 3111/5362 cut-off events. For 168645/168812 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 37256 event pairs, 898 based on Foata normal form. 51/5309 useless extension candidates. Maximal degree in co-relation 32169. Up to 4763 conditions per place. [2024-06-27 18:47:07,973 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 350 selfloop transitions, 27 changer transitions 0/385 dead transitions. [2024-06-27 18:47:07,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 385 transitions, 5239 flow [2024-06-27 18:47:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:47:07,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 18:47:07,975 INFO L175 Difference]: Start difference. First operand has 361 places, 341 transitions, 4267 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:47:07,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 385 transitions, 5239 flow [2024-06-27 18:47:08,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 385 transitions, 5159 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:08,936 INFO L231 Difference]: Finished difference. Result has 364 places, 343 transitions, 4284 flow [2024-06-27 18:47:08,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4187, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4284, PETRI_PLACES=364, PETRI_TRANSITIONS=343} [2024-06-27 18:47:08,936 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-27 18:47:08,936 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 343 transitions, 4284 flow [2024-06-27 18:47:08,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:08,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:08,937 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 18:47:08,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:47:08,937 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:08,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash 590910795, now seen corresponding path program 13 times [2024-06-27 18:47:08,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:08,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712404538] [2024-06-27 18:47:08,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:09,981 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 18:47:09,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712404538] [2024-06-27 18:47:09,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712404538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:09,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:09,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:09,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204797914] [2024-06-27 18:47:09,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:09,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:09,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:09,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:09,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:10,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:10,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 343 transitions, 4284 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:10,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:10,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:10,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:11,499 INFO L124 PetriNetUnfolderBase]: 3126/5519 cut-off events. [2024-06-27 18:47:11,500 INFO L125 PetriNetUnfolderBase]: For 170652/170795 co-relation queries the response was YES. [2024-06-27 18:47:11,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32569 conditions, 5519 events. 3126/5519 cut-off events. For 170652/170795 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 39439 event pairs, 810 based on Foata normal form. 55/5479 useless extension candidates. Maximal degree in co-relation 32401. Up to 4093 conditions per place. [2024-06-27 18:47:11,578 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 323 selfloop transitions, 64 changer transitions 0/395 dead transitions. [2024-06-27 18:47:11,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 395 transitions, 5946 flow [2024-06-27 18:47:11,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:47:11,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987714987714988 [2024-06-27 18:47:11,580 INFO L175 Difference]: Start difference. First operand has 364 places, 343 transitions, 4284 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:47:11,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 395 transitions, 5946 flow [2024-06-27 18:47:12,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 395 transitions, 5871 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:12,462 INFO L231 Difference]: Finished difference. Result has 366 places, 345 transitions, 4372 flow [2024-06-27 18:47:12,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4372, PETRI_PLACES=366, PETRI_TRANSITIONS=345} [2024-06-27 18:47:12,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-27 18:47:12,463 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 345 transitions, 4372 flow [2024-06-27 18:47:12,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:12,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:12,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:12,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:47:12,464 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:12,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1922666795, now seen corresponding path program 14 times [2024-06-27 18:47:12,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:12,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316020807] [2024-06-27 18:47:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:12,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:13,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:13,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316020807] [2024-06-27 18:47:13,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316020807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:13,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:13,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361907228] [2024-06-27 18:47:13,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:13,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:13,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:13,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:13,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 345 transitions, 4372 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:13,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:13,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:13,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:15,261 INFO L124 PetriNetUnfolderBase]: 3127/5497 cut-off events. [2024-06-27 18:47:15,261 INFO L125 PetriNetUnfolderBase]: For 165451/165612 co-relation queries the response was YES. [2024-06-27 18:47:15,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32590 conditions, 5497 events. 3127/5497 cut-off events. For 165451/165612 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 39070 event pairs, 819 based on Foata normal form. 59/5458 useless extension candidates. Maximal degree in co-relation 32421. Up to 4447 conditions per place. [2024-06-27 18:47:15,339 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 332 selfloop transitions, 50 changer transitions 0/390 dead transitions. [2024-06-27 18:47:15,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 390 transitions, 5358 flow [2024-06-27 18:47:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 18:47:15,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 18:47:15,341 INFO L175 Difference]: Start difference. First operand has 366 places, 345 transitions, 4372 flow. Second operand 11 states and 194 transitions. [2024-06-27 18:47:15,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 390 transitions, 5358 flow [2024-06-27 18:47:16,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 390 transitions, 5200 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:16,246 INFO L231 Difference]: Finished difference. Result has 368 places, 346 transitions, 4339 flow [2024-06-27 18:47:16,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4339, PETRI_PLACES=368, PETRI_TRANSITIONS=346} [2024-06-27 18:47:16,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 18:47:16,246 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 346 transitions, 4339 flow [2024-06-27 18:47:16,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:16,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:16,247 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 18:47:16,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:47:16,247 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:16,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2016730855, now seen corresponding path program 7 times [2024-06-27 18:47:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:16,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076723331] [2024-06-27 18:47:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:17,124 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 18:47:17,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:17,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076723331] [2024-06-27 18:47:17,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076723331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:17,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:17,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:17,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70426256] [2024-06-27 18:47:17,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:17,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:17,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:17,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:17,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 346 transitions, 4339 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:17,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:17,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:17,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:18,478 INFO L124 PetriNetUnfolderBase]: 3149/5403 cut-off events. [2024-06-27 18:47:18,478 INFO L125 PetriNetUnfolderBase]: For 166695/166884 co-relation queries the response was YES. [2024-06-27 18:47:18,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32442 conditions, 5403 events. 3149/5403 cut-off events. For 166695/166884 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 37421 event pairs, 956 based on Foata normal form. 47/5345 useless extension candidates. Maximal degree in co-relation 32272. Up to 4949 conditions per place. [2024-06-27 18:47:18,553 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 350 selfloop transitions, 20 changer transitions 0/378 dead transitions. [2024-06-27 18:47:18,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 378 transitions, 5209 flow [2024-06-27 18:47:18,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:18,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:47:18,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:47:18,555 INFO L175 Difference]: Start difference. First operand has 368 places, 346 transitions, 4339 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:47:18,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 378 transitions, 5209 flow [2024-06-27 18:47:19,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 378 transitions, 4998 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-27 18:47:19,500 INFO L231 Difference]: Finished difference. Result has 367 places, 347 transitions, 4196 flow [2024-06-27 18:47:19,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4128, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4196, PETRI_PLACES=367, PETRI_TRANSITIONS=347} [2024-06-27 18:47:19,501 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-27 18:47:19,501 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 347 transitions, 4196 flow [2024-06-27 18:47:19,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:19,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:19,501 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 18:47:19,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:47:19,501 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:19,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1922874340, now seen corresponding path program 12 times [2024-06-27 18:47:19,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:19,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209728920] [2024-06-27 18:47:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:19,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:20,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209728920] [2024-06-27 18:47:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209728920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:20,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:20,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:47:20,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451139985] [2024-06-27 18:47:20,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:20,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:47:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:47:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:47:20,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:20,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 347 transitions, 4196 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:47:20,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:20,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:20,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:21,617 INFO L124 PetriNetUnfolderBase]: 3159/5571 cut-off events. [2024-06-27 18:47:21,617 INFO L125 PetriNetUnfolderBase]: For 167644/167793 co-relation queries the response was YES. [2024-06-27 18:47:21,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32176 conditions, 5571 events. 3159/5571 cut-off events. For 167644/167793 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 39762 event pairs, 879 based on Foata normal form. 57/5529 useless extension candidates. Maximal degree in co-relation 32007. Up to 4630 conditions per place. [2024-06-27 18:47:21,697 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 334 selfloop transitions, 44 changer transitions 0/386 dead transitions. [2024-06-27 18:47:21,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 386 transitions, 5158 flow [2024-06-27 18:47:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:47:21,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:47:21,698 INFO L175 Difference]: Start difference. First operand has 367 places, 347 transitions, 4196 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:47:21,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 386 transitions, 5158 flow [2024-06-27 18:47:22,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 386 transitions, 5092 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:22,594 INFO L231 Difference]: Finished difference. Result has 369 places, 348 transitions, 4254 flow [2024-06-27 18:47:22,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4130, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4254, PETRI_PLACES=369, PETRI_TRANSITIONS=348} [2024-06-27 18:47:22,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-27 18:47:22,595 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 348 transitions, 4254 flow [2024-06-27 18:47:22,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:47:22,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:22,595 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 18:47:22,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:47:22,595 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:22,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 810441443, now seen corresponding path program 8 times [2024-06-27 18:47:22,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:22,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546862515] [2024-06-27 18:47:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:22,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:23,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546862515] [2024-06-27 18:47:23,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546862515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:23,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:23,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:23,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363263524] [2024-06-27 18:47:23,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:23,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:23,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:24,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:24,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 348 transitions, 4254 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:24,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:24,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:24,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:25,280 INFO L124 PetriNetUnfolderBase]: 3179/5486 cut-off events. [2024-06-27 18:47:25,281 INFO L125 PetriNetUnfolderBase]: For 172274/172441 co-relation queries the response was YES. [2024-06-27 18:47:25,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32369 conditions, 5486 events. 3179/5486 cut-off events. For 172274/172441 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 38321 event pairs, 958 based on Foata normal form. 51/5429 useless extension candidates. Maximal degree in co-relation 32199. Up to 4972 conditions per place. [2024-06-27 18:47:25,358 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 357 selfloop transitions, 20 changer transitions 0/385 dead transitions. [2024-06-27 18:47:25,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 385 transitions, 5184 flow [2024-06-27 18:47:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:47:25,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:47:25,360 INFO L175 Difference]: Start difference. First operand has 369 places, 348 transitions, 4254 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:47:25,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 385 transitions, 5184 flow [2024-06-27 18:47:26,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 385 transitions, 5072 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:26,446 INFO L231 Difference]: Finished difference. Result has 371 places, 349 transitions, 4212 flow [2024-06-27 18:47:26,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4142, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4212, PETRI_PLACES=371, PETRI_TRANSITIONS=349} [2024-06-27 18:47:26,447 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 18:47:26,447 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 349 transitions, 4212 flow [2024-06-27 18:47:26,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:26,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:26,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:47:26,447 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:26,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1928380870, now seen corresponding path program 13 times [2024-06-27 18:47:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:26,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983538210] [2024-06-27 18:47:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:27,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983538210] [2024-06-27 18:47:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983538210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:27,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178753641] [2024-06-27 18:47:27,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:27,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:27,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:27,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 349 transitions, 4212 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:27,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:27,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:27,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:28,941 INFO L124 PetriNetUnfolderBase]: 3187/5589 cut-off events. [2024-06-27 18:47:28,941 INFO L125 PetriNetUnfolderBase]: For 173283/173432 co-relation queries the response was YES. [2024-06-27 18:47:29,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32391 conditions, 5589 events. 3187/5589 cut-off events. For 173283/173432 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 39744 event pairs, 881 based on Foata normal form. 57/5547 useless extension candidates. Maximal degree in co-relation 32220. Up to 4678 conditions per place. [2024-06-27 18:47:29,021 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 341 selfloop transitions, 51 changer transitions 0/400 dead transitions. [2024-06-27 18:47:29,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 400 transitions, 5264 flow [2024-06-27 18:47:29,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-27 18:47:29,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:47:29,022 INFO L175 Difference]: Start difference. First operand has 371 places, 349 transitions, 4212 flow. Second operand 12 states and 210 transitions. [2024-06-27 18:47:29,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 400 transitions, 5264 flow [2024-06-27 18:47:30,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 400 transitions, 5204 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:30,150 INFO L231 Difference]: Finished difference. Result has 375 places, 351 transitions, 4302 flow [2024-06-27 18:47:30,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4152, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4302, PETRI_PLACES=375, PETRI_TRANSITIONS=351} [2024-06-27 18:47:30,151 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 18:47:30,151 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 351 transitions, 4302 flow [2024-06-27 18:47:30,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:30,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:30,151 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 18:47:30,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:47:30,152 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:30,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash 152636065, now seen corresponding path program 9 times [2024-06-27 18:47:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:30,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914378116] [2024-06-27 18:47:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:31,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:31,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914378116] [2024-06-27 18:47:31,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914378116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:31,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:31,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:31,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097136913] [2024-06-27 18:47:31,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:31,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:31,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:31,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:31,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 351 transitions, 4302 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:31,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:31,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:31,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:32,643 INFO L124 PetriNetUnfolderBase]: 3207/5531 cut-off events. [2024-06-27 18:47:32,643 INFO L125 PetriNetUnfolderBase]: For 177100/177255 co-relation queries the response was YES. [2024-06-27 18:47:32,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32700 conditions, 5531 events. 3207/5531 cut-off events. For 177100/177255 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 38703 event pairs, 1000 based on Foata normal form. 47/5472 useless extension candidates. Maximal degree in co-relation 32528. Up to 5035 conditions per place. [2024-06-27 18:47:32,723 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 354 selfloop transitions, 23 changer transitions 0/385 dead transitions. [2024-06-27 18:47:32,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 385 transitions, 5212 flow [2024-06-27 18:47:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:47:32,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:47:32,724 INFO L175 Difference]: Start difference. First operand has 375 places, 351 transitions, 4302 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:47:32,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 385 transitions, 5212 flow [2024-06-27 18:47:33,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 385 transitions, 4929 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-27 18:47:33,898 INFO L231 Difference]: Finished difference. Result has 374 places, 352 transitions, 4097 flow [2024-06-27 18:47:33,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4019, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4097, PETRI_PLACES=374, PETRI_TRANSITIONS=352} [2024-06-27 18:47:33,898 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-27 18:47:33,899 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 352 transitions, 4097 flow [2024-06-27 18:47:33,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:33,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:33,899 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 18:47:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:47:33,899 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:33,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1928384590, now seen corresponding path program 14 times [2024-06-27 18:47:33,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:33,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491923228] [2024-06-27 18:47:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:33,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:34,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:34,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491923228] [2024-06-27 18:47:34,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491923228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:34,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:34,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:34,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482365671] [2024-06-27 18:47:34,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:34,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:34,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:34,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:34,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:34,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:34,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 352 transitions, 4097 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:34,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:34,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:34,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:36,389 INFO L124 PetriNetUnfolderBase]: 3328/5818 cut-off events. [2024-06-27 18:47:36,390 INFO L125 PetriNetUnfolderBase]: For 249845/250018 co-relation queries the response was YES. [2024-06-27 18:47:36,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34152 conditions, 5818 events. 3328/5818 cut-off events. For 249845/250018 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 41572 event pairs, 896 based on Foata normal form. 81/5795 useless extension candidates. Maximal degree in co-relation 33982. Up to 4598 conditions per place. [2024-06-27 18:47:36,474 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 344 selfloop transitions, 53 changer transitions 0/405 dead transitions. [2024-06-27 18:47:36,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 405 transitions, 5437 flow [2024-06-27 18:47:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:47:36,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49385749385749383 [2024-06-27 18:47:36,475 INFO L175 Difference]: Start difference. First operand has 374 places, 352 transitions, 4097 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:47:36,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 405 transitions, 5437 flow [2024-06-27 18:47:37,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 405 transitions, 5336 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:37,743 INFO L231 Difference]: Finished difference. Result has 376 places, 354 transitions, 4178 flow [2024-06-27 18:47:37,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4178, PETRI_PLACES=376, PETRI_TRANSITIONS=354} [2024-06-27 18:47:37,744 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-27 18:47:37,744 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 354 transitions, 4178 flow [2024-06-27 18:47:37,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:37,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:37,745 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 18:47:37,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:47:37,745 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:37,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:37,745 INFO L85 PathProgramCache]: Analyzing trace with hash 810225962, now seen corresponding path program 15 times [2024-06-27 18:47:37,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:37,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119257379] [2024-06-27 18:47:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:37,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:38,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:38,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119257379] [2024-06-27 18:47:38,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119257379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:38,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:38,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:38,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586383032] [2024-06-27 18:47:38,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:38,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:38,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:38,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:38,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:38,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 354 transitions, 4178 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:38,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:38,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:38,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:40,532 INFO L124 PetriNetUnfolderBase]: 3415/5921 cut-off events. [2024-06-27 18:47:40,533 INFO L125 PetriNetUnfolderBase]: For 315324/315503 co-relation queries the response was YES. [2024-06-27 18:47:40,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34933 conditions, 5921 events. 3415/5921 cut-off events. For 315324/315503 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 42245 event pairs, 1050 based on Foata normal form. 73/5888 useless extension candidates. Maximal degree in co-relation 34763. Up to 5202 conditions per place. [2024-06-27 18:47:40,618 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 369 selfloop transitions, 24 changer transitions 0/401 dead transitions. [2024-06-27 18:47:40,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 401 transitions, 5228 flow [2024-06-27 18:47:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:47:40,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:47:40,619 INFO L175 Difference]: Start difference. First operand has 376 places, 354 transitions, 4178 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:47:40,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 401 transitions, 5228 flow [2024-06-27 18:47:42,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 401 transitions, 5116 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:47:42,187 INFO L231 Difference]: Finished difference. Result has 380 places, 355 transitions, 4157 flow [2024-06-27 18:47:42,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4074, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4157, PETRI_PLACES=380, PETRI_TRANSITIONS=355} [2024-06-27 18:47:42,187 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-27 18:47:42,187 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 355 transitions, 4157 flow [2024-06-27 18:47:42,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:42,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:42,188 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 18:47:42,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:47:42,188 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:42,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash 585548415, now seen corresponding path program 15 times [2024-06-27 18:47:42,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:42,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880575315] [2024-06-27 18:47:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:42,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:43,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:43,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880575315] [2024-06-27 18:47:43,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880575315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:43,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:43,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:43,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552211311] [2024-06-27 18:47:43,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:43,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:43,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:43,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:43,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:43,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 355 transitions, 4157 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:43,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:43,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:43,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:44,940 INFO L124 PetriNetUnfolderBase]: 3411/6007 cut-off events. [2024-06-27 18:47:44,941 INFO L125 PetriNetUnfolderBase]: For 244702/244851 co-relation queries the response was YES. [2024-06-27 18:47:45,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34600 conditions, 6007 events. 3411/6007 cut-off events. For 244702/244851 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 43482 event pairs, 886 based on Foata normal form. 57/5965 useless extension candidates. Maximal degree in co-relation 34428. Up to 4616 conditions per place. [2024-06-27 18:47:45,030 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 324 selfloop transitions, 68 changer transitions 0/400 dead transitions. [2024-06-27 18:47:45,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 400 transitions, 5365 flow [2024-06-27 18:47:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:47:45,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 18:47:45,031 INFO L175 Difference]: Start difference. First operand has 380 places, 355 transitions, 4157 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:47:45,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 400 transitions, 5365 flow [2024-06-27 18:47:46,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 400 transitions, 5280 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 18:47:46,423 INFO L231 Difference]: Finished difference. Result has 381 places, 355 transitions, 4213 flow [2024-06-27 18:47:46,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4213, PETRI_PLACES=381, PETRI_TRANSITIONS=355} [2024-06-27 18:47:46,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-27 18:47:46,424 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 355 transitions, 4213 flow [2024-06-27 18:47:46,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:46,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:46,424 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 18:47:46,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:47:46,425 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:46,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash 785059951, now seen corresponding path program 10 times [2024-06-27 18:47:46,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:46,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372719246] [2024-06-27 18:47:46,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:46,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:47,638 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 18:47:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:47,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372719246] [2024-06-27 18:47:47,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372719246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:47,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:47,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:47,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406575052] [2024-06-27 18:47:47,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:47,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:47,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:47,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 355 transitions, 4213 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:47,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:47,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:47,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:49,229 INFO L124 PetriNetUnfolderBase]: 3424/5942 cut-off events. [2024-06-27 18:47:49,229 INFO L125 PetriNetUnfolderBase]: For 249607/249738 co-relation queries the response was YES. [2024-06-27 18:47:49,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34917 conditions, 5942 events. 3424/5942 cut-off events. For 249607/249738 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 42523 event pairs, 1073 based on Foata normal form. 39/5871 useless extension candidates. Maximal degree in co-relation 34744. Up to 5381 conditions per place. [2024-06-27 18:47:49,310 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 363 selfloop transitions, 24 changer transitions 0/395 dead transitions. [2024-06-27 18:47:49,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 395 transitions, 5189 flow [2024-06-27 18:47:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:47:49,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:47:49,311 INFO L175 Difference]: Start difference. First operand has 381 places, 355 transitions, 4213 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:47:49,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 395 transitions, 5189 flow [2024-06-27 18:47:50,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 395 transitions, 5042 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:47:50,622 INFO L231 Difference]: Finished difference. Result has 381 places, 356 transitions, 4148 flow [2024-06-27 18:47:50,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4066, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4148, PETRI_PLACES=381, PETRI_TRANSITIONS=356} [2024-06-27 18:47:50,623 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-27 18:47:50,623 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 356 transitions, 4148 flow [2024-06-27 18:47:50,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:50,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:50,623 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 18:47:50,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:47:50,623 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:50,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash 792469261, now seen corresponding path program 11 times [2024-06-27 18:47:50,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:50,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872126248] [2024-06-27 18:47:50,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:50,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:51,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:51,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872126248] [2024-06-27 18:47:51,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872126248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:51,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:51,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:51,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527816341] [2024-06-27 18:47:51,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:51,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:51,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:51,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:51,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:51,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:51,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 356 transitions, 4148 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:51,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:51,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:51,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:53,371 INFO L124 PetriNetUnfolderBase]: 3441/5971 cut-off events. [2024-06-27 18:47:53,371 INFO L125 PetriNetUnfolderBase]: For 253400/253527 co-relation queries the response was YES. [2024-06-27 18:47:53,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34805 conditions, 5971 events. 3441/5971 cut-off events. For 253400/253527 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 42777 event pairs, 1108 based on Foata normal form. 39/5902 useless extension candidates. Maximal degree in co-relation 34631. Up to 5441 conditions per place. [2024-06-27 18:47:53,458 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 366 selfloop transitions, 22 changer transitions 0/396 dead transitions. [2024-06-27 18:47:53,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 396 transitions, 5137 flow [2024-06-27 18:47:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:47:53,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:47:53,459 INFO L175 Difference]: Start difference. First operand has 381 places, 356 transitions, 4148 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:47:53,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 396 transitions, 5137 flow [2024-06-27 18:47:54,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 396 transitions, 5063 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:54,922 INFO L231 Difference]: Finished difference. Result has 384 places, 358 transitions, 4172 flow [2024-06-27 18:47:54,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4076, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4172, PETRI_PLACES=384, PETRI_TRANSITIONS=358} [2024-06-27 18:47:54,922 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-27 18:47:54,923 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 358 transitions, 4172 flow [2024-06-27 18:47:54,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:54,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:54,923 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 18:47:54,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:47:54,923 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:54,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1728727385, now seen corresponding path program 16 times [2024-06-27 18:47:54,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:54,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659853509] [2024-06-27 18:47:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:54,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:56,195 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 18:47:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659853509] [2024-06-27 18:47:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659853509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:56,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:56,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:56,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278253328] [2024-06-27 18:47:56,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:56,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:56,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:56,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:56,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:56,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:47:56,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 358 transitions, 4172 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:56,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:56,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:47:56,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:57,791 INFO L124 PetriNetUnfolderBase]: 3463/6027 cut-off events. [2024-06-27 18:47:57,792 INFO L125 PetriNetUnfolderBase]: For 256872/257003 co-relation queries the response was YES. [2024-06-27 18:47:57,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34969 conditions, 6027 events. 3463/6027 cut-off events. For 256872/257003 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 43249 event pairs, 1053 based on Foata normal form. 39/5957 useless extension candidates. Maximal degree in co-relation 34793. Up to 5255 conditions per place. [2024-06-27 18:47:57,883 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 357 selfloop transitions, 35 changer transitions 0/400 dead transitions. [2024-06-27 18:47:57,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 400 transitions, 5394 flow [2024-06-27 18:47:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:47:57,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:47:57,884 INFO L175 Difference]: Start difference. First operand has 384 places, 358 transitions, 4172 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:47:57,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 400 transitions, 5394 flow [2024-06-27 18:47:59,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 400 transitions, 5327 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:47:59,307 INFO L231 Difference]: Finished difference. Result has 387 places, 360 transitions, 4215 flow [2024-06-27 18:47:59,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4105, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4215, PETRI_PLACES=387, PETRI_TRANSITIONS=360} [2024-06-27 18:47:59,308 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 18:47:59,308 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 360 transitions, 4215 flow [2024-06-27 18:47:59,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:47:59,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:59,308 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 18:47:59,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:47:59,309 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:59,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:59,309 INFO L85 PathProgramCache]: Analyzing trace with hash 784850205, now seen corresponding path program 17 times [2024-06-27 18:47:59,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:59,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429079053] [2024-06-27 18:47:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:59,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:01,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429079053] [2024-06-27 18:48:01,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429079053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:01,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:01,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214848089] [2024-06-27 18:48:01,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:01,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:01,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:01,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:01,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:01,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 360 transitions, 4215 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:01,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:01,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:01,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:02,916 INFO L124 PetriNetUnfolderBase]: 3459/6028 cut-off events. [2024-06-27 18:48:02,917 INFO L125 PetriNetUnfolderBase]: For 247250/247375 co-relation queries the response was YES. [2024-06-27 18:48:02,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34729 conditions, 6028 events. 3459/6028 cut-off events. For 247250/247375 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 43390 event pairs, 1068 based on Foata normal form. 35/5955 useless extension candidates. Maximal degree in co-relation 34552. Up to 5341 conditions per place. [2024-06-27 18:48:03,002 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 365 selfloop transitions, 32 changer transitions 0/405 dead transitions. [2024-06-27 18:48:03,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 405 transitions, 5215 flow [2024-06-27 18:48:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:48:03,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:48:03,004 INFO L175 Difference]: Start difference. First operand has 387 places, 360 transitions, 4215 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:48:03,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 405 transitions, 5215 flow [2024-06-27 18:48:04,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 405 transitions, 5122 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:04,323 INFO L231 Difference]: Finished difference. Result has 390 places, 360 transitions, 4191 flow [2024-06-27 18:48:04,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4122, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4191, PETRI_PLACES=390, PETRI_TRANSITIONS=360} [2024-06-27 18:48:04,323 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 18:48:04,323 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 360 transitions, 4191 flow [2024-06-27 18:48:04,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:04,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:04,324 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 18:48:04,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:48:04,324 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:04,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash 784844470, now seen corresponding path program 16 times [2024-06-27 18:48:04,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:04,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020962784] [2024-06-27 18:48:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:05,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:05,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020962784] [2024-06-27 18:48:05,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020962784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:05,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:05,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:48:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080750373] [2024-06-27 18:48:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:05,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:48:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:48:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:48:05,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:05,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 360 transitions, 4191 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:48:05,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:05,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:05,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:06,657 INFO L124 PetriNetUnfolderBase]: 3502/6103 cut-off events. [2024-06-27 18:48:06,657 INFO L125 PetriNetUnfolderBase]: For 284656/284781 co-relation queries the response was YES. [2024-06-27 18:48:06,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34230 conditions, 6103 events. 3502/6103 cut-off events. For 284656/284781 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 44046 event pairs, 1089 based on Foata normal form. 47/6042 useless extension candidates. Maximal degree in co-relation 34053. Up to 5285 conditions per place. [2024-06-27 18:48:06,742 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 368 selfloop transitions, 28 changer transitions 0/404 dead transitions. [2024-06-27 18:48:06,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 404 transitions, 5213 flow [2024-06-27 18:48:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:48:06,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:48:06,743 INFO L175 Difference]: Start difference. First operand has 390 places, 360 transitions, 4191 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:48:06,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 404 transitions, 5213 flow [2024-06-27 18:48:07,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 404 transitions, 5101 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 18:48:07,944 INFO L231 Difference]: Finished difference. Result has 389 places, 360 transitions, 4141 flow [2024-06-27 18:48:07,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4141, PETRI_PLACES=389, PETRI_TRANSITIONS=360} [2024-06-27 18:48:07,944 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 18:48:07,944 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 360 transitions, 4141 flow [2024-06-27 18:48:07,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 18:48:07,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:07,945 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 18:48:07,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:48:07,945 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:07,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash 792478561, now seen corresponding path program 12 times [2024-06-27 18:48:07,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:07,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882333778] [2024-06-27 18:48:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:07,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:08,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:08,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882333778] [2024-06-27 18:48:08,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882333778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:08,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:08,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:08,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810991276] [2024-06-27 18:48:08,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:08,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:08,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:09,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:09,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 360 transitions, 4141 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:09,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:09,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:09,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:10,412 INFO L124 PetriNetUnfolderBase]: 3520/6112 cut-off events. [2024-06-27 18:48:10,412 INFO L125 PetriNetUnfolderBase]: For 211787/211911 co-relation queries the response was YES. [2024-06-27 18:48:10,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34264 conditions, 6112 events. 3520/6112 cut-off events. For 211787/211911 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 44040 event pairs, 1156 based on Foata normal form. 36/6040 useless extension candidates. Maximal degree in co-relation 34088. Up to 5584 conditions per place. [2024-06-27 18:48:10,500 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 370 selfloop transitions, 21 changer transitions 0/399 dead transitions. [2024-06-27 18:48:10,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 399 transitions, 5123 flow [2024-06-27 18:48:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:48:10,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:48:10,501 INFO L175 Difference]: Start difference. First operand has 389 places, 360 transitions, 4141 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:48:10,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 399 transitions, 5123 flow [2024-06-27 18:48:11,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 399 transitions, 5039 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:11,831 INFO L231 Difference]: Finished difference. Result has 390 places, 361 transitions, 4137 flow [2024-06-27 18:48:11,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4137, PETRI_PLACES=390, PETRI_TRANSITIONS=361} [2024-06-27 18:48:11,832 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 18:48:11,832 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 361 transitions, 4137 flow [2024-06-27 18:48:11,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:11,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:11,832 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 18:48:11,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:48:11,833 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:11,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:11,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1879346329, now seen corresponding path program 18 times [2024-06-27 18:48:11,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:11,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988182411] [2024-06-27 18:48:11,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:11,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:13,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:13,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988182411] [2024-06-27 18:48:13,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988182411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:13,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:13,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617480571] [2024-06-27 18:48:13,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:13,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:13,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:13,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:13,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 361 transitions, 4137 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:13,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:13,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:13,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:14,773 INFO L124 PetriNetUnfolderBase]: 3538/6174 cut-off events. [2024-06-27 18:48:14,774 INFO L125 PetriNetUnfolderBase]: For 215087/215254 co-relation queries the response was YES. [2024-06-27 18:48:14,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34337 conditions, 6174 events. 3538/6174 cut-off events. For 215087/215254 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 44782 event pairs, 1133 based on Foata normal form. 51/6119 useless extension candidates. Maximal degree in co-relation 34160. Up to 5526 conditions per place. [2024-06-27 18:48:14,867 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 370 selfloop transitions, 27 changer transitions 0/405 dead transitions. [2024-06-27 18:48:14,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 405 transitions, 5153 flow [2024-06-27 18:48:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:14,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:48:14,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:48:14,868 INFO L175 Difference]: Start difference. First operand has 390 places, 361 transitions, 4137 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:48:14,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 405 transitions, 5153 flow [2024-06-27 18:48:16,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 405 transitions, 5083 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:16,319 INFO L231 Difference]: Finished difference. Result has 393 places, 363 transitions, 4168 flow [2024-06-27 18:48:16,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4168, PETRI_PLACES=393, PETRI_TRANSITIONS=363} [2024-06-27 18:48:16,319 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-27 18:48:16,319 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 363 transitions, 4168 flow [2024-06-27 18:48:16,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:16,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:16,320 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 18:48:16,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:48:16,320 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:16,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash 152645365, now seen corresponding path program 13 times [2024-06-27 18:48:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177972155] [2024-06-27 18:48:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:16,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:17,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:17,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177972155] [2024-06-27 18:48:17,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177972155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:17,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:17,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:17,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003548078] [2024-06-27 18:48:17,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:17,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:17,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:17,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:17,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:17,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 363 transitions, 4168 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:17,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:17,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:17,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:19,066 INFO L124 PetriNetUnfolderBase]: 3562/6182 cut-off events. [2024-06-27 18:48:19,066 INFO L125 PetriNetUnfolderBase]: For 218166/218315 co-relation queries the response was YES. [2024-06-27 18:48:19,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34562 conditions, 6182 events. 3562/6182 cut-off events. For 218166/218315 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 44618 event pairs, 1200 based on Foata normal form. 41/6112 useless extension candidates. Maximal degree in co-relation 34384. Up to 5672 conditions per place. [2024-06-27 18:48:19,160 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 368 selfloop transitions, 22 changer transitions 0/398 dead transitions. [2024-06-27 18:48:19,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 398 transitions, 5121 flow [2024-06-27 18:48:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:48:19,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:48:19,162 INFO L175 Difference]: Start difference. First operand has 393 places, 363 transitions, 4168 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:48:19,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 398 transitions, 5121 flow [2024-06-27 18:48:20,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 398 transitions, 5042 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:20,686 INFO L231 Difference]: Finished difference. Result has 395 places, 365 transitions, 4189 flow [2024-06-27 18:48:20,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4189, PETRI_PLACES=395, PETRI_TRANSITIONS=365} [2024-06-27 18:48:20,687 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 18:48:20,687 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 365 transitions, 4189 flow [2024-06-27 18:48:20,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:20,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:20,687 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 18:48:20,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:48:20,687 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:20,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:20,688 INFO L85 PathProgramCache]: Analyzing trace with hash 817850753, now seen corresponding path program 14 times [2024-06-27 18:48:20,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:20,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089322987] [2024-06-27 18:48:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:20,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:21,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:21,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089322987] [2024-06-27 18:48:21,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089322987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:21,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:21,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993763702] [2024-06-27 18:48:21,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:21,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:21,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:21,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:21,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:21,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:21,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 365 transitions, 4189 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:21,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:21,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:21,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:23,449 INFO L124 PetriNetUnfolderBase]: 3578/6218 cut-off events. [2024-06-27 18:48:23,449 INFO L125 PetriNetUnfolderBase]: For 222814/222971 co-relation queries the response was YES. [2024-06-27 18:48:23,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34758 conditions, 6218 events. 3578/6218 cut-off events. For 222814/222971 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 44943 event pairs, 1195 based on Foata normal form. 43/6149 useless extension candidates. Maximal degree in co-relation 34578. Up to 5695 conditions per place. [2024-06-27 18:48:23,537 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 373 selfloop transitions, 22 changer transitions 0/403 dead transitions. [2024-06-27 18:48:23,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 403 transitions, 5177 flow [2024-06-27 18:48:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:48:23,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:48:23,539 INFO L175 Difference]: Start difference. First operand has 395 places, 365 transitions, 4189 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:48:23,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 403 transitions, 5177 flow [2024-06-27 18:48:25,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 403 transitions, 5106 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:48:25,216 INFO L231 Difference]: Finished difference. Result has 399 places, 367 transitions, 4219 flow [2024-06-27 18:48:25,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4118, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4219, PETRI_PLACES=399, PETRI_TRANSITIONS=367} [2024-06-27 18:48:25,216 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-27 18:48:25,217 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 367 transitions, 4219 flow [2024-06-27 18:48:25,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:25,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:25,217 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 18:48:25,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:48:25,217 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:25,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:25,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1562886793, now seen corresponding path program 19 times [2024-06-27 18:48:25,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:25,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787215361] [2024-06-27 18:48:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:25,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:26,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:26,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787215361] [2024-06-27 18:48:26,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787215361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:26,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:26,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:26,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210142828] [2024-06-27 18:48:26,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:26,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:26,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:26,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:26,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:26,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:26,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 367 transitions, 4219 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:26,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:26,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:26,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:28,101 INFO L124 PetriNetUnfolderBase]: 3625/6347 cut-off events. [2024-06-27 18:48:28,102 INFO L125 PetriNetUnfolderBase]: For 215559/215716 co-relation queries the response was YES. [2024-06-27 18:48:28,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35325 conditions, 6347 events. 3625/6347 cut-off events. For 215559/215716 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 46350 event pairs, 1124 based on Foata normal form. 75/6309 useless extension candidates. Maximal degree in co-relation 35143. Up to 5355 conditions per place. [2024-06-27 18:48:28,207 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 355 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2024-06-27 18:48:28,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 425 transitions, 5591 flow [2024-06-27 18:48:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:48:28,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:48:28,208 INFO L175 Difference]: Start difference. First operand has 399 places, 367 transitions, 4219 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:48:28,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 425 transitions, 5591 flow [2024-06-27 18:48:29,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 425 transitions, 5489 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:48:29,843 INFO L231 Difference]: Finished difference. Result has 407 places, 378 transitions, 4564 flow [2024-06-27 18:48:29,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4564, PETRI_PLACES=407, PETRI_TRANSITIONS=378} [2024-06-27 18:48:29,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-27 18:48:29,843 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 378 transitions, 4564 flow [2024-06-27 18:48:29,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:29,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:29,844 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 18:48:29,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:48:29,844 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:29,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash 817860053, now seen corresponding path program 15 times [2024-06-27 18:48:29,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:29,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917403341] [2024-06-27 18:48:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:29,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:30,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:30,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917403341] [2024-06-27 18:48:30,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917403341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:30,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:30,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:30,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866875655] [2024-06-27 18:48:30,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:30,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:30,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:30,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:30,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 378 transitions, 4564 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:30,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:30,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:30,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:32,474 INFO L124 PetriNetUnfolderBase]: 3625/6303 cut-off events. [2024-06-27 18:48:32,474 INFO L125 PetriNetUnfolderBase]: For 205670/205858 co-relation queries the response was YES. [2024-06-27 18:48:32,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35737 conditions, 6303 events. 3625/6303 cut-off events. For 205670/205858 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 45834 event pairs, 1258 based on Foata normal form. 52/6239 useless extension candidates. Maximal degree in co-relation 35551. Up to 5793 conditions per place. [2024-06-27 18:48:32,571 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 389 selfloop transitions, 17 changer transitions 0/414 dead transitions. [2024-06-27 18:48:32,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 414 transitions, 5562 flow [2024-06-27 18:48:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:48:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:48:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:48:32,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:48:32,573 INFO L175 Difference]: Start difference. First operand has 407 places, 378 transitions, 4564 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:48:32,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 414 transitions, 5562 flow [2024-06-27 18:48:34,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 414 transitions, 5302 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-27 18:48:34,154 INFO L231 Difference]: Finished difference. Result has 411 places, 379 transitions, 4384 flow [2024-06-27 18:48:34,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4304, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4384, PETRI_PLACES=411, PETRI_TRANSITIONS=379} [2024-06-27 18:48:34,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-27 18:48:34,154 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 379 transitions, 4384 flow [2024-06-27 18:48:34,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 18:48:34,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:34,155 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 18:48:34,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:48:34,155 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:34,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:34,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1180659969, now seen corresponding path program 1 times [2024-06-27 18:48:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:34,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236741] [2024-06-27 18:48:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:34,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:35,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:35,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236741] [2024-06-27 18:48:35,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:35,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:35,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:35,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984643085] [2024-06-27 18:48:35,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:35,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:35,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:35,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:35,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:35,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:35,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 379 transitions, 4384 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:35,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:35,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:35,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:37,705 INFO L124 PetriNetUnfolderBase]: 3796/6798 cut-off events. [2024-06-27 18:48:37,705 INFO L125 PetriNetUnfolderBase]: For 337500/337507 co-relation queries the response was YES. [2024-06-27 18:48:37,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38128 conditions, 6798 events. 3796/6798 cut-off events. For 337500/337507 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 51359 event pairs, 1062 based on Foata normal form. 13/6747 useless extension candidates. Maximal degree in co-relation 37942. Up to 5109 conditions per place. [2024-06-27 18:48:37,799 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 408 selfloop transitions, 39 changer transitions 0/455 dead transitions. [2024-06-27 18:48:37,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 455 transitions, 5912 flow [2024-06-27 18:48:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:48:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:48:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 242 transitions. [2024-06-27 18:48:37,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031185031185031 [2024-06-27 18:48:37,800 INFO L175 Difference]: Start difference. First operand has 411 places, 379 transitions, 4384 flow. Second operand 13 states and 242 transitions. [2024-06-27 18:48:37,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 455 transitions, 5912 flow [2024-06-27 18:48:40,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 455 transitions, 5842 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:40,200 INFO L231 Difference]: Finished difference. Result has 416 places, 379 transitions, 4395 flow [2024-06-27 18:48:40,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4395, PETRI_PLACES=416, PETRI_TRANSITIONS=379} [2024-06-27 18:48:40,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-27 18:48:40,201 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 379 transitions, 4395 flow [2024-06-27 18:48:40,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:40,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:40,202 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 18:48:40,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:48:40,202 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:40,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 580435361, now seen corresponding path program 2 times [2024-06-27 18:48:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:40,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235953982] [2024-06-27 18:48:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:40,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:41,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:41,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235953982] [2024-06-27 18:48:41,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235953982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:41,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:41,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:41,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526225608] [2024-06-27 18:48:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:41,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:41,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:41,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:41,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:41,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:41,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 379 transitions, 4395 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:48:41,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:41,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:41,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:43,413 INFO L124 PetriNetUnfolderBase]: 3861/6933 cut-off events. [2024-06-27 18:48:43,413 INFO L125 PetriNetUnfolderBase]: For 356346/356353 co-relation queries the response was YES. [2024-06-27 18:48:43,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38451 conditions, 6933 events. 3861/6933 cut-off events. For 356346/356353 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 52738 event pairs, 1131 based on Foata normal form. 17/6886 useless extension candidates. Maximal degree in co-relation 38264. Up to 5842 conditions per place. [2024-06-27 18:48:43,523 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 384 selfloop transitions, 43 changer transitions 0/435 dead transitions. [2024-06-27 18:48:43,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 435 transitions, 5541 flow [2024-06-27 18:48:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:48:43,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:48:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:48:43,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49385749385749383 [2024-06-27 18:48:43,525 INFO L175 Difference]: Start difference. First operand has 416 places, 379 transitions, 4395 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:48:43,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 435 transitions, 5541 flow [2024-06-27 18:48:45,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 435 transitions, 5465 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 18:48:45,900 INFO L231 Difference]: Finished difference. Result has 416 places, 380 transitions, 4423 flow [2024-06-27 18:48:45,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4423, PETRI_PLACES=416, PETRI_TRANSITIONS=380} [2024-06-27 18:48:45,900 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-27 18:48:45,900 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 380 transitions, 4423 flow [2024-06-27 18:48:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:48:45,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:45,901 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 18:48:45,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:48:45,901 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:45,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:45,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1122452199, now seen corresponding path program 3 times [2024-06-27 18:48:45,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:45,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283050177] [2024-06-27 18:48:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:45,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:47,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:47,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283050177] [2024-06-27 18:48:47,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283050177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:47,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:47,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066001375] [2024-06-27 18:48:47,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:47,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:47,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:47,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:47,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:47,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 380 transitions, 4423 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:47,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:47,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:47,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:49,494 INFO L124 PetriNetUnfolderBase]: 3913/7021 cut-off events. [2024-06-27 18:48:49,495 INFO L125 PetriNetUnfolderBase]: For 332117/332124 co-relation queries the response was YES. [2024-06-27 18:48:49,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38893 conditions, 7021 events. 3913/7021 cut-off events. For 332117/332124 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 53488 event pairs, 1115 based on Foata normal form. 13/6970 useless extension candidates. Maximal degree in co-relation 38706. Up to 5593 conditions per place. [2024-06-27 18:48:49,593 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 406 selfloop transitions, 44 changer transitions 0/458 dead transitions. [2024-06-27 18:48:49,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 458 transitions, 5973 flow [2024-06-27 18:48:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:48:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:48:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 253 transitions. [2024-06-27 18:48:49,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48841698841698844 [2024-06-27 18:48:49,595 INFO L175 Difference]: Start difference. First operand has 416 places, 380 transitions, 4423 flow. Second operand 14 states and 253 transitions. [2024-06-27 18:48:49,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 458 transitions, 5973 flow [2024-06-27 18:48:51,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 458 transitions, 5887 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:51,690 INFO L231 Difference]: Finished difference. Result has 421 places, 380 transitions, 4429 flow [2024-06-27 18:48:51,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4337, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4429, PETRI_PLACES=421, PETRI_TRANSITIONS=380} [2024-06-27 18:48:51,691 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-27 18:48:51,691 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 380 transitions, 4429 flow [2024-06-27 18:48:51,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:51,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:51,691 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 18:48:51,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:48:51,692 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:51,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash -568119737, now seen corresponding path program 4 times [2024-06-27 18:48:51,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:51,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096894983] [2024-06-27 18:48:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:51,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:52,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096894983] [2024-06-27 18:48:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096894983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:52,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:52,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940033465] [2024-06-27 18:48:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:52,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:52,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:52,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:52,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:52,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 380 transitions, 4429 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:52,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:52,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:52,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:54,981 INFO L124 PetriNetUnfolderBase]: 4178/7524 cut-off events. [2024-06-27 18:48:54,981 INFO L125 PetriNetUnfolderBase]: For 344839/344844 co-relation queries the response was YES. [2024-06-27 18:48:55,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41687 conditions, 7524 events. 4178/7524 cut-off events. For 344839/344844 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58370 event pairs, 1170 based on Foata normal form. 13/7465 useless extension candidates. Maximal degree in co-relation 41499. Up to 5960 conditions per place. [2024-06-27 18:48:55,102 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 411 selfloop transitions, 57 changer transitions 0/476 dead transitions. [2024-06-27 18:48:55,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 476 transitions, 6269 flow [2024-06-27 18:48:55,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:48:55,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:48:55,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 242 transitions. [2024-06-27 18:48:55,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031185031185031 [2024-06-27 18:48:55,104 INFO L175 Difference]: Start difference. First operand has 421 places, 380 transitions, 4429 flow. Second operand 13 states and 242 transitions. [2024-06-27 18:48:55,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 476 transitions, 6269 flow [2024-06-27 18:48:57,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 476 transitions, 6172 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-27 18:48:57,404 INFO L231 Difference]: Finished difference. Result has 430 places, 395 transitions, 4840 flow [2024-06-27 18:48:57,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4336, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4840, PETRI_PLACES=430, PETRI_TRANSITIONS=395} [2024-06-27 18:48:57,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 389 predicate places. [2024-06-27 18:48:57,404 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 395 transitions, 4840 flow [2024-06-27 18:48:57,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:57,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:57,404 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 18:48:57,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:48:57,405 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:57,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:57,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1564878591, now seen corresponding path program 5 times [2024-06-27 18:48:57,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:57,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903326730] [2024-06-27 18:48:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:57,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:58,414 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 18:48:58,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:58,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903326730] [2024-06-27 18:48:58,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903326730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:58,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:58,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:58,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501535616] [2024-06-27 18:48:58,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:58,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:58,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:58,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:58,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:58,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:48:58,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 395 transitions, 4840 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:48:58,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:58,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:48:58,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:00,694 INFO L124 PetriNetUnfolderBase]: 4240/7641 cut-off events. [2024-06-27 18:49:00,694 INFO L125 PetriNetUnfolderBase]: For 359450/359455 co-relation queries the response was YES. [2024-06-27 18:49:00,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43335 conditions, 7641 events. 4240/7641 cut-off events. For 359450/359455 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 59429 event pairs, 1237 based on Foata normal form. 13/7582 useless extension candidates. Maximal degree in co-relation 43138. Up to 5540 conditions per place. [2024-06-27 18:49:00,806 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 407 selfloop transitions, 40 changer transitions 0/455 dead transitions. [2024-06-27 18:49:00,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 455 transitions, 6310 flow [2024-06-27 18:49:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:49:00,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-27 18:49:00,807 INFO L175 Difference]: Start difference. First operand has 430 places, 395 transitions, 4840 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:49:00,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 455 transitions, 6310 flow [2024-06-27 18:49:03,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 455 transitions, 6149 flow, removed 77 selfloop flow, removed 2 redundant places. [2024-06-27 18:49:03,198 INFO L231 Difference]: Finished difference. Result has 439 places, 395 transitions, 4763 flow [2024-06-27 18:49:03,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4679, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4763, PETRI_PLACES=439, PETRI_TRANSITIONS=395} [2024-06-27 18:49:03,199 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-27 18:49:03,199 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 395 transitions, 4763 flow [2024-06-27 18:49:03,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:49:03,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:03,199 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 18:49:03,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:49:03,199 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:03,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:03,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1569640191, now seen corresponding path program 6 times [2024-06-27 18:49:03,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:03,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76339185] [2024-06-27 18:49:03,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:03,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:04,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:04,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76339185] [2024-06-27 18:49:04,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76339185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:04,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:04,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:04,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631720993] [2024-06-27 18:49:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:04,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:04,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 395 transitions, 4763 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:04,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:04,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:04,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:06,729 INFO L124 PetriNetUnfolderBase]: 4270/7703 cut-off events. [2024-06-27 18:49:06,729 INFO L125 PetriNetUnfolderBase]: For 347434/347439 co-relation queries the response was YES. [2024-06-27 18:49:06,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43119 conditions, 7703 events. 4270/7703 cut-off events. For 347434/347439 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 60244 event pairs, 1325 based on Foata normal form. 15/7646 useless extension candidates. Maximal degree in co-relation 42920. Up to 6763 conditions per place. [2024-06-27 18:49:06,858 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 419 selfloop transitions, 28 changer transitions 0/455 dead transitions. [2024-06-27 18:49:06,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 455 transitions, 5973 flow [2024-06-27 18:49:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:49:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:49:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 18:49:06,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:49:06,859 INFO L175 Difference]: Start difference. First operand has 439 places, 395 transitions, 4763 flow. Second operand 12 states and 212 transitions. [2024-06-27 18:49:06,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 455 transitions, 5973 flow [2024-06-27 18:49:09,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 455 transitions, 5895 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:09,438 INFO L231 Difference]: Finished difference. Result has 442 places, 395 transitions, 4747 flow [2024-06-27 18:49:09,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4685, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4747, PETRI_PLACES=442, PETRI_TRANSITIONS=395} [2024-06-27 18:49:09,439 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-27 18:49:09,439 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 395 transitions, 4747 flow [2024-06-27 18:49:09,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:09,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:09,439 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 18:49:09,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:49:09,439 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:09,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:09,440 INFO L85 PathProgramCache]: Analyzing trace with hash 861545589, now seen corresponding path program 1 times [2024-06-27 18:49:09,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:09,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66622085] [2024-06-27 18:49:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:09,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:10,589 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 18:49:10,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:10,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66622085] [2024-06-27 18:49:10,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66622085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:10,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:10,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:10,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741829262] [2024-06-27 18:49:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:10,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:10,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:10,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:10,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 395 transitions, 4747 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:10,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:10,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:10,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:12,626 INFO L124 PetriNetUnfolderBase]: 4222/7424 cut-off events. [2024-06-27 18:49:12,626 INFO L125 PetriNetUnfolderBase]: For 239628/239734 co-relation queries the response was YES. [2024-06-27 18:49:12,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41640 conditions, 7424 events. 4222/7424 cut-off events. For 239628/239734 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 56466 event pairs, 791 based on Foata normal form. 66/7401 useless extension candidates. Maximal degree in co-relation 41440. Up to 5827 conditions per place. [2024-06-27 18:49:12,735 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 346 selfloop transitions, 94 changer transitions 0/448 dead transitions. [2024-06-27 18:49:12,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 448 transitions, 5877 flow [2024-06-27 18:49:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 18:49:12,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061425061425061 [2024-06-27 18:49:12,736 INFO L175 Difference]: Start difference. First operand has 442 places, 395 transitions, 4747 flow. Second operand 11 states and 206 transitions. [2024-06-27 18:49:12,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 448 transitions, 5877 flow [2024-06-27 18:49:14,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 448 transitions, 5825 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:14,999 INFO L231 Difference]: Finished difference. Result has 443 places, 396 transitions, 4901 flow [2024-06-27 18:49:14,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4695, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4901, PETRI_PLACES=443, PETRI_TRANSITIONS=396} [2024-06-27 18:49:15,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-27 18:49:15,000 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 396 transitions, 4901 flow [2024-06-27 18:49:15,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:15,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:15,000 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 18:49:15,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:49:15,000 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:15,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:15,001 INFO L85 PathProgramCache]: Analyzing trace with hash 861538645, now seen corresponding path program 7 times [2024-06-27 18:49:15,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:15,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094024495] [2024-06-27 18:49:15,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:15,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:16,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094024495] [2024-06-27 18:49:16,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094024495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:16,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:16,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751210353] [2024-06-27 18:49:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:16,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:16,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:16,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:16,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 396 transitions, 4901 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:16,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:16,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:16,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:18,541 INFO L124 PetriNetUnfolderBase]: 4290/7552 cut-off events. [2024-06-27 18:49:18,541 INFO L125 PetriNetUnfolderBase]: For 311124/311230 co-relation queries the response was YES. [2024-06-27 18:49:18,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42917 conditions, 7552 events. 4290/7552 cut-off events. For 311124/311230 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 57687 event pairs, 803 based on Foata normal form. 74/7537 useless extension candidates. Maximal degree in co-relation 42716. Up to 5769 conditions per place. [2024-06-27 18:49:18,673 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 355 selfloop transitions, 95 changer transitions 0/458 dead transitions. [2024-06-27 18:49:18,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 458 transitions, 6127 flow [2024-06-27 18:49:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:49:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:49:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-06-27 18:49:18,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112612612612613 [2024-06-27 18:49:18,674 INFO L175 Difference]: Start difference. First operand has 443 places, 396 transitions, 4901 flow. Second operand 12 states and 227 transitions. [2024-06-27 18:49:18,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 458 transitions, 6127 flow [2024-06-27 18:49:21,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 458 transitions, 5931 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:21,516 INFO L231 Difference]: Finished difference. Result has 446 places, 396 transitions, 4900 flow [2024-06-27 18:49:21,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4900, PETRI_PLACES=446, PETRI_TRANSITIONS=396} [2024-06-27 18:49:21,540 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-27 18:49:21,540 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 396 transitions, 4900 flow [2024-06-27 18:49:21,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:21,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:21,541 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 18:49:21,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:49:21,541 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:21,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2064766493, now seen corresponding path program 8 times [2024-06-27 18:49:21,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:21,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58129902] [2024-06-27 18:49:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:21,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:22,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:22,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58129902] [2024-06-27 18:49:22,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58129902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:22,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:22,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393389450] [2024-06-27 18:49:22,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:22,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:22,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:22,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 396 transitions, 4900 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:22,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:22,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:22,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:25,165 INFO L124 PetriNetUnfolderBase]: 4442/7836 cut-off events. [2024-06-27 18:49:25,165 INFO L125 PetriNetUnfolderBase]: For 400603/400709 co-relation queries the response was YES. [2024-06-27 18:49:25,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45768 conditions, 7836 events. 4442/7836 cut-off events. For 400603/400709 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 60366 event pairs, 831 based on Foata normal form. 72/7819 useless extension candidates. Maximal degree in co-relation 45566. Up to 5632 conditions per place. [2024-06-27 18:49:25,298 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 355 selfloop transitions, 100 changer transitions 0/463 dead transitions. [2024-06-27 18:49:25,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 463 transitions, 6442 flow [2024-06-27 18:49:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:49:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:49:25,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-06-27 18:49:25,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-06-27 18:49:25,299 INFO L175 Difference]: Start difference. First operand has 446 places, 396 transitions, 4900 flow. Second operand 12 states and 231 transitions. [2024-06-27 18:49:25,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 463 transitions, 6442 flow [2024-06-27 18:49:29,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 463 transitions, 6255 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:29,042 INFO L231 Difference]: Finished difference. Result has 448 places, 396 transitions, 4916 flow [2024-06-27 18:49:29,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4713, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4916, PETRI_PLACES=448, PETRI_TRANSITIONS=396} [2024-06-27 18:49:29,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 18:49:29,042 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 396 transitions, 4916 flow [2024-06-27 18:49:29,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:29,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:29,043 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 18:49:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:49:29,043 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:29,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash 861365665, now seen corresponding path program 9 times [2024-06-27 18:49:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:29,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796364873] [2024-06-27 18:49:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:30,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796364873] [2024-06-27 18:49:30,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796364873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:30,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:30,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:49:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897231394] [2024-06-27 18:49:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:30,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:49:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:49:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:49:30,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:30,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 396 transitions, 4916 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:49:30,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:30,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:30,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:32,509 INFO L124 PetriNetUnfolderBase]: 4510/8049 cut-off events. [2024-06-27 18:49:32,510 INFO L125 PetriNetUnfolderBase]: For 424619/424725 co-relation queries the response was YES. [2024-06-27 18:49:32,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46651 conditions, 8049 events. 4510/8049 cut-off events. For 424619/424725 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 62919 event pairs, 1002 based on Foata normal form. 74/8034 useless extension candidates. Maximal degree in co-relation 46448. Up to 5161 conditions per place. [2024-06-27 18:49:32,630 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 293 selfloop transitions, 151 changer transitions 0/452 dead transitions. [2024-06-27 18:49:32,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 452 transitions, 6100 flow [2024-06-27 18:49:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:49:32,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282555282555282 [2024-06-27 18:49:32,642 INFO L175 Difference]: Start difference. First operand has 448 places, 396 transitions, 4916 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:49:32,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 452 transitions, 6100 flow [2024-06-27 18:49:35,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 452 transitions, 5901 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:35,772 INFO L231 Difference]: Finished difference. Result has 449 places, 396 transitions, 5025 flow [2024-06-27 18:49:35,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4717, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5025, PETRI_PLACES=449, PETRI_TRANSITIONS=396} [2024-06-27 18:49:35,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-27 18:49:35,778 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 396 transitions, 5025 flow [2024-06-27 18:49:35,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:49:35,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:35,778 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 18:49:35,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:49:35,778 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:35,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash 868032339, now seen corresponding path program 2 times [2024-06-27 18:49:35,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:35,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354003931] [2024-06-27 18:49:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:35,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:37,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:37,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354003931] [2024-06-27 18:49:37,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354003931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:37,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:37,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:37,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141928550] [2024-06-27 18:49:37,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:37,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:37,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:37,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:37,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 396 transitions, 5025 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:37,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:37,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:37,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:39,273 INFO L124 PetriNetUnfolderBase]: 4426/7893 cut-off events. [2024-06-27 18:49:39,274 INFO L125 PetriNetUnfolderBase]: For 258381/258487 co-relation queries the response was YES. [2024-06-27 18:49:39,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44730 conditions, 7893 events. 4426/7893 cut-off events. For 258381/258487 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 61388 event pairs, 960 based on Foata normal form. 66/7870 useless extension candidates. Maximal degree in co-relation 44526. Up to 5151 conditions per place. [2024-06-27 18:49:39,408 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 281 selfloop transitions, 160 changer transitions 0/449 dead transitions. [2024-06-27 18:49:39,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 449 transitions, 6159 flow [2024-06-27 18:49:39,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:39,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:49:39,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515970515970516 [2024-06-27 18:49:39,409 INFO L175 Difference]: Start difference. First operand has 449 places, 396 transitions, 5025 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:49:39,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 449 transitions, 6159 flow [2024-06-27 18:49:42,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 449 transitions, 5857 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:42,424 INFO L231 Difference]: Finished difference. Result has 450 places, 397 transitions, 5063 flow [2024-06-27 18:49:42,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5063, PETRI_PLACES=450, PETRI_TRANSITIONS=397} [2024-06-27 18:49:42,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-27 18:49:42,424 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 397 transitions, 5063 flow [2024-06-27 18:49:42,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:42,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:42,425 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 18:49:42,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:49:42,425 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:42,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:42,425 INFO L85 PathProgramCache]: Analyzing trace with hash 868040709, now seen corresponding path program 3 times [2024-06-27 18:49:42,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:42,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139836897] [2024-06-27 18:49:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:42,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:43,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139836897] [2024-06-27 18:49:43,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139836897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:43,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:43,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102270382] [2024-06-27 18:49:43,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:43,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:43,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:43,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 397 transitions, 5063 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:43,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:43,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:43,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:45,918 INFO L124 PetriNetUnfolderBase]: 4542/8105 cut-off events. [2024-06-27 18:49:45,918 INFO L125 PetriNetUnfolderBase]: For 367765/367871 co-relation queries the response was YES. [2024-06-27 18:49:46,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47543 conditions, 8105 events. 4542/8105 cut-off events. For 367765/367871 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 63355 event pairs, 964 based on Foata normal form. 66/8082 useless extension candidates. Maximal degree in co-relation 47338. Up to 4619 conditions per place. [2024-06-27 18:49:46,061 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 284 selfloop transitions, 164 changer transitions 0/456 dead transitions. [2024-06-27 18:49:46,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 456 transitions, 6551 flow [2024-06-27 18:49:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:46,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 18:49:46,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5282555282555282 [2024-06-27 18:49:46,063 INFO L175 Difference]: Start difference. First operand has 450 places, 397 transitions, 5063 flow. Second operand 11 states and 215 transitions. [2024-06-27 18:49:46,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 456 transitions, 6551 flow [2024-06-27 18:49:50,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 456 transitions, 6221 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:50,056 INFO L231 Difference]: Finished difference. Result has 452 places, 399 transitions, 5099 flow [2024-06-27 18:49:50,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4733, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5099, PETRI_PLACES=452, PETRI_TRANSITIONS=399} [2024-06-27 18:49:50,056 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 411 predicate places. [2024-06-27 18:49:50,056 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 399 transitions, 5099 flow [2024-06-27 18:49:50,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:50,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:50,056 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 18:49:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:49:50,057 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:50,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash 690663235, now seen corresponding path program 10 times [2024-06-27 18:49:50,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:50,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440065486] [2024-06-27 18:49:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:51,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440065486] [2024-06-27 18:49:51,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440065486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:51,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:51,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:51,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388212691] [2024-06-27 18:49:51,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:51,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:51,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:51,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 399 transitions, 5099 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:51,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:51,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:51,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:54,277 INFO L124 PetriNetUnfolderBase]: 4610/8148 cut-off events. [2024-06-27 18:49:54,277 INFO L125 PetriNetUnfolderBase]: For 444000/444106 co-relation queries the response was YES. [2024-06-27 18:49:54,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48122 conditions, 8148 events. 4610/8148 cut-off events. For 444000/444106 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 63412 event pairs, 899 based on Foata normal form. 74/8133 useless extension candidates. Maximal degree in co-relation 47916. Up to 6233 conditions per place. [2024-06-27 18:49:54,423 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 346 selfloop transitions, 107 changer transitions 0/461 dead transitions. [2024-06-27 18:49:54,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 461 transitions, 6331 flow [2024-06-27 18:49:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:49:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:49:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-27 18:49:54,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157657657657657 [2024-06-27 18:49:54,425 INFO L175 Difference]: Start difference. First operand has 452 places, 399 transitions, 5099 flow. Second operand 12 states and 229 transitions. [2024-06-27 18:49:54,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 461 transitions, 6331 flow [2024-06-27 18:49:58,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 461 transitions, 6116 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:49:58,166 INFO L231 Difference]: Finished difference. Result has 457 places, 399 transitions, 5102 flow [2024-06-27 18:49:58,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4884, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5102, PETRI_PLACES=457, PETRI_TRANSITIONS=399} [2024-06-27 18:49:58,167 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-27 18:49:58,167 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 399 transitions, 5102 flow [2024-06-27 18:49:58,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:58,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:58,167 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 18:49:58,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:49:58,168 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:58,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash 690543265, now seen corresponding path program 11 times [2024-06-27 18:49:58,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:58,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712490576] [2024-06-27 18:49:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:58,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:59,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:59,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712490576] [2024-06-27 18:49:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712490576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:59,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:59,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:59,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666053413] [2024-06-27 18:49:59,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:59,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:59,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:59,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:49:59,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 399 transitions, 5102 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:59,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:59,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:49:59,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:02,042 INFO L124 PetriNetUnfolderBase]: 4743/8399 cut-off events. [2024-06-27 18:50:02,042 INFO L125 PetriNetUnfolderBase]: For 523515/523621 co-relation queries the response was YES. [2024-06-27 18:50:02,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51103 conditions, 8399 events. 4743/8399 cut-off events. For 523515/523621 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 65877 event pairs, 894 based on Foata normal form. 72/8382 useless extension candidates. Maximal degree in co-relation 50895. Up to 5389 conditions per place. [2024-06-27 18:50:02,189 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 351 selfloop transitions, 107 changer transitions 0/466 dead transitions. [2024-06-27 18:50:02,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 466 transitions, 6648 flow [2024-06-27 18:50:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:50:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:50:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-06-27 18:50:02,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-27 18:50:02,190 INFO L175 Difference]: Start difference. First operand has 457 places, 399 transitions, 5102 flow. Second operand 12 states and 234 transitions. [2024-06-27 18:50:02,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 466 transitions, 6648 flow [2024-06-27 18:50:06,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 466 transitions, 6452 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:50:06,425 INFO L231 Difference]: Finished difference. Result has 462 places, 399 transitions, 5123 flow [2024-06-27 18:50:06,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4906, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5123, PETRI_PLACES=462, PETRI_TRANSITIONS=399} [2024-06-27 18:50:06,426 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-27 18:50:06,426 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 399 transitions, 5123 flow [2024-06-27 18:50:06,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:06,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:06,426 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 18:50:06,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:50:06,427 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:06,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash 867794755, now seen corresponding path program 12 times [2024-06-27 18:50:06,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:06,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643924176] [2024-06-27 18:50:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:06,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643924176] [2024-06-27 18:50:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643924176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:08,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:08,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820815726] [2024-06-27 18:50:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:08,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:08,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:08,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:08,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:50:08,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 399 transitions, 5123 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:08,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:08,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:50:08,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:10,788 INFO L124 PetriNetUnfolderBase]: 4811/8527 cut-off events. [2024-06-27 18:50:10,788 INFO L125 PetriNetUnfolderBase]: For 550657/550763 co-relation queries the response was YES. [2024-06-27 18:50:10,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51846 conditions, 8527 events. 4811/8527 cut-off events. For 550657/550763 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 67352 event pairs, 1000 based on Foata normal form. 74/8512 useless extension candidates. Maximal degree in co-relation 51637. Up to 6744 conditions per place. [2024-06-27 18:50:10,942 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 355 selfloop transitions, 97 changer transitions 0/460 dead transitions. [2024-06-27 18:50:10,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 460 transitions, 6349 flow [2024-06-27 18:50:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:50:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:50:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-27 18:50:10,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 18:50:10,949 INFO L175 Difference]: Start difference. First operand has 462 places, 399 transitions, 5123 flow. Second operand 12 states and 225 transitions. [2024-06-27 18:50:10,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 460 transitions, 6349 flow [2024-06-27 18:50:15,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 460 transitions, 6136 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:50:15,013 INFO L231 Difference]: Finished difference. Result has 464 places, 399 transitions, 5109 flow [2024-06-27 18:50:15,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4910, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5109, PETRI_PLACES=464, PETRI_TRANSITIONS=399} [2024-06-27 18:50:15,018 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 423 predicate places. [2024-06-27 18:50:15,018 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 399 transitions, 5109 flow [2024-06-27 18:50:15,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:15,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:15,019 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 18:50:15,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:50:15,019 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:15,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1249759591, now seen corresponding path program 4 times [2024-06-27 18:50:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:15,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842686091] [2024-06-27 18:50:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:15,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:16,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842686091] [2024-06-27 18:50:16,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842686091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:16,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:16,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:16,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800922659] [2024-06-27 18:50:16,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:16,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:16,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:16,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:16,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:50:16,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 399 transitions, 5109 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:16,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:16,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:50:16,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:18,798 INFO L124 PetriNetUnfolderBase]: 4727/8371 cut-off events. [2024-06-27 18:50:18,799 INFO L125 PetriNetUnfolderBase]: For 371908/372014 co-relation queries the response was YES. [2024-06-27 18:50:18,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49405 conditions, 8371 events. 4727/8371 cut-off events. For 371908/372014 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 65849 event pairs, 976 based on Foata normal form. 66/8348 useless extension candidates. Maximal degree in co-relation 49195. Up to 6774 conditions per place. [2024-06-27 18:50:18,966 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 351 selfloop transitions, 92 changer transitions 0/451 dead transitions. [2024-06-27 18:50:18,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 451 transitions, 6233 flow [2024-06-27 18:50:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:50:18,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085995085995086 [2024-06-27 18:50:18,968 INFO L175 Difference]: Start difference. First operand has 464 places, 399 transitions, 5109 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:50:18,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 451 transitions, 6233 flow [2024-06-27 18:50:23,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 451 transitions, 6053 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:23,029 INFO L231 Difference]: Finished difference. Result has 466 places, 399 transitions, 5117 flow [2024-06-27 18:50:23,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4929, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5117, PETRI_PLACES=466, PETRI_TRANSITIONS=399} [2024-06-27 18:50:23,033 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-27 18:50:23,033 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 399 transitions, 5117 flow [2024-06-27 18:50:23,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:23,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:23,033 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 18:50:23,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:50:23,033 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:23,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash 695304865, now seen corresponding path program 13 times [2024-06-27 18:50:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445911002] [2024-06-27 18:50:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:23,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:24,317 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 18:50:24,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445911002] [2024-06-27 18:50:24,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445911002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:24,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:24,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:24,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807924372] [2024-06-27 18:50:24,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:24,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:24,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:50:24,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 399 transitions, 5117 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:24,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:24,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:50:24,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:26,908 INFO L124 PetriNetUnfolderBase]: 4795/8499 cut-off events. [2024-06-27 18:50:26,909 INFO L125 PetriNetUnfolderBase]: For 452401/452507 co-relation queries the response was YES. [2024-06-27 18:50:27,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50102 conditions, 8499 events. 4795/8499 cut-off events. For 452401/452507 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 67071 event pairs, 988 based on Foata normal form. 74/8484 useless extension candidates. Maximal degree in co-relation 49891. Up to 6716 conditions per place. [2024-06-27 18:50:27,044 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 360 selfloop transitions, 93 changer transitions 0/461 dead transitions. [2024-06-27 18:50:27,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 461 transitions, 6349 flow [2024-06-27 18:50:27,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:50:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:50:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-27 18:50:27,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:50:27,045 INFO L175 Difference]: Start difference. First operand has 466 places, 399 transitions, 5117 flow. Second operand 12 states and 228 transitions. [2024-06-27 18:50:27,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 461 transitions, 6349 flow [2024-06-27 18:50:30,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 461 transitions, 6133 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 18:50:30,223 INFO L231 Difference]: Finished difference. Result has 468 places, 399 transitions, 5092 flow [2024-06-27 18:50:30,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4901, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5092, PETRI_PLACES=468, PETRI_TRANSITIONS=399} [2024-06-27 18:50:30,224 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 427 predicate places. [2024-06-27 18:50:30,224 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 399 transitions, 5092 flow [2024-06-27 18:50:30,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:30,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:30,224 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 18:50:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:50:30,224 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:30,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1249575017, now seen corresponding path program 14 times [2024-06-27 18:50:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:30,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649240645] [2024-06-27 18:50:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:30,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:31,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:31,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:31,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649240645] [2024-06-27 18:50:31,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649240645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:31,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:31,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:31,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075389003] [2024-06-27 18:50:31,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:31,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:31,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:31,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:31,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:31,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:50:31,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 399 transitions, 5092 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:50:31,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:31,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:50:31,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:33,649 INFO L124 PetriNetUnfolderBase]: 4847/8684 cut-off events. [2024-06-27 18:50:33,649 INFO L125 PetriNetUnfolderBase]: For 439240/439346 co-relation queries the response was YES. [2024-06-27 18:50:33,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50515 conditions, 8684 events. 4847/8684 cut-off events. For 439240/439346 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 69131 event pairs, 1065 based on Foata normal form. 72/8667 useless extension candidates. Maximal degree in co-relation 50303. Up to 5329 conditions per place. [2024-06-27 18:50:33,806 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 310 selfloop transitions, 142 changer transitions 0/460 dead transitions. [2024-06-27 18:50:33,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 460 transitions, 6606 flow [2024-06-27 18:50:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 18:50:33,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-06-27 18:50:33,807 INFO L175 Difference]: Start difference. First operand has 468 places, 399 transitions, 5092 flow. Second operand 11 states and 220 transitions. [2024-06-27 18:50:33,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 460 transitions, 6606 flow [2024-06-27 18:50:37,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 460 transitions, 6417 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:50:37,320 INFO L231 Difference]: Finished difference. Result has 468 places, 399 transitions, 5192 flow [2024-06-27 18:50:37,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4905, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5192, PETRI_PLACES=468, PETRI_TRANSITIONS=399} [2024-06-27 18:50:37,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 427 predicate places. [2024-06-27 18:50:37,321 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 399 transitions, 5192 flow [2024-06-27 18:50:37,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:50:37,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:37,322 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 18:50:37,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:50:37,322 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:37,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash 695131885, now seen corresponding path program 15 times [2024-06-27 18:50:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:37,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435851047] [2024-06-27 18:50:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:37,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:38,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:38,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435851047] [2024-06-27 18:50:38,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435851047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:38,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:38,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:50:38,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791043886] [2024-06-27 18:50:38,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:38,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:50:38,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:38,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:50:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:50:38,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:50:38,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 399 transitions, 5192 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:50:38,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:38,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:50:38,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:40,795 INFO L124 PetriNetUnfolderBase]: 4834/8661 cut-off events. [2024-06-27 18:50:40,795 INFO L125 PetriNetUnfolderBase]: For 364438/364544 co-relation queries the response was YES. [2024-06-27 18:50:40,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49399 conditions, 8661 events. 4834/8661 cut-off events. For 364438/364544 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 68968 event pairs, 1080 based on Foata normal form. 74/8646 useless extension candidates. Maximal degree in co-relation 49187. Up to 5627 conditions per place. [2024-06-27 18:50:40,964 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 302 selfloop transitions, 146 changer transitions 0/456 dead transitions. [2024-06-27 18:50:40,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 456 transitions, 6388 flow [2024-06-27 18:50:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-27 18:50:40,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356265356265356 [2024-06-27 18:50:40,966 INFO L175 Difference]: Start difference. First operand has 468 places, 399 transitions, 5192 flow. Second operand 11 states and 218 transitions. [2024-06-27 18:50:40,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 456 transitions, 6388 flow [2024-06-27 18:50:43,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 456 transitions, 6105 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:43,798 INFO L231 Difference]: Finished difference. Result has 470 places, 399 transitions, 5209 flow [2024-06-27 18:50:43,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4909, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5209, PETRI_PLACES=470, PETRI_TRANSITIONS=399} [2024-06-27 18:50:43,798 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-27 18:50:43,799 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 399 transitions, 5209 flow [2024-06-27 18:50:43,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:50:43,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:43,799 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 18:50:43,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:50:43,799 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:43,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash -565620557, now seen corresponding path program 1 times [2024-06-27 18:50:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:43,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260100124] [2024-06-27 18:50:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:43,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:43,881 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 18:50:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:43,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260100124] [2024-06-27 18:50:43,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260100124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:43,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:43,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:50:43,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278997511] [2024-06-27 18:50:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:43,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:50:43,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:50:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:50:43,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-27 18:50:43,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 399 transitions, 5209 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:43,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:43,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-27 18:50:43,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:46,554 INFO L124 PetriNetUnfolderBase]: 6044/11643 cut-off events. [2024-06-27 18:50:46,554 INFO L125 PetriNetUnfolderBase]: For 236894/237201 co-relation queries the response was YES. [2024-06-27 18:50:46,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58947 conditions, 11643 events. 6044/11643 cut-off events. For 236894/237201 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 104455 event pairs, 2098 based on Foata normal form. 508/11913 useless extension candidates. Maximal degree in co-relation 58735. Up to 6572 conditions per place. [2024-06-27 18:50:46,773 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 330 selfloop transitions, 37 changer transitions 275/810 dead transitions. [2024-06-27 18:50:46,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 810 transitions, 11238 flow [2024-06-27 18:50:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:46,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 18:50:46,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709459459459459 [2024-06-27 18:50:46,775 INFO L175 Difference]: Start difference. First operand has 470 places, 399 transitions, 5209 flow. Second operand 8 states and 169 transitions. [2024-06-27 18:50:46,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 810 transitions, 11238 flow [2024-06-27 18:50:49,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 810 transitions, 10804 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-27 18:50:49,995 INFO L231 Difference]: Finished difference. Result has 472 places, 402 transitions, 5059 flow [2024-06-27 18:50:49,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4889, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5059, PETRI_PLACES=472, PETRI_TRANSITIONS=402} [2024-06-27 18:50:49,996 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-27 18:50:49,996 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 402 transitions, 5059 flow [2024-06-27 18:50:49,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:49,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:49,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:49,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:50:49,997 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:49,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash 111466005, now seen corresponding path program 5 times [2024-06-27 18:50:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771489422] [2024-06-27 18:50:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:49,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:51,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:51,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771489422] [2024-06-27 18:50:51,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771489422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:51,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:51,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:51,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310171261] [2024-06-27 18:50:51,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:51,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:51,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:51,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:51,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:50:51,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 402 transitions, 5059 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:51,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:51,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:50:51,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:54,287 INFO L124 PetriNetUnfolderBase]: 4726/8756 cut-off events. [2024-06-27 18:50:54,288 INFO L125 PetriNetUnfolderBase]: For 287371/287488 co-relation queries the response was YES. [2024-06-27 18:50:54,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49759 conditions, 8756 events. 4726/8756 cut-off events. For 287371/287488 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 72278 event pairs, 1688 based on Foata normal form. 88/8773 useless extension candidates. Maximal degree in co-relation 49542. Up to 7589 conditions per place. [2024-06-27 18:50:54,420 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 392 selfloop transitions, 50 changer transitions 3/454 dead transitions. [2024-06-27 18:50:54,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 454 transitions, 6233 flow [2024-06-27 18:50:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:50:54,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-27 18:50:54,421 INFO L175 Difference]: Start difference. First operand has 472 places, 402 transitions, 5059 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:50:54,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 454 transitions, 6233 flow [2024-06-27 18:50:57,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 454 transitions, 6191 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:57,345 INFO L231 Difference]: Finished difference. Result has 479 places, 401 transitions, 5142 flow [2024-06-27 18:50:57,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5031, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5142, PETRI_PLACES=479, PETRI_TRANSITIONS=401} [2024-06-27 18:50:57,346 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-27 18:50:57,346 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 401 transitions, 5142 flow [2024-06-27 18:50:57,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:57,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:57,346 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 18:50:57,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:50:57,346 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:57,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1681404249, now seen corresponding path program 16 times [2024-06-27 18:50:57,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:57,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648441740] [2024-06-27 18:50:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:57,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648441740] [2024-06-27 18:50:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648441740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:59,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371917996] [2024-06-27 18:50:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:59,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:50:59,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 401 transitions, 5142 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:59,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:59,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:50:59,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:01,819 INFO L124 PetriNetUnfolderBase]: 4747/8824 cut-off events. [2024-06-27 18:51:01,819 INFO L125 PetriNetUnfolderBase]: For 365600/365702 co-relation queries the response was YES. [2024-06-27 18:51:01,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49386 conditions, 8824 events. 4747/8824 cut-off events. For 365600/365702 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 72774 event pairs, 1588 based on Foata normal form. 82/8845 useless extension candidates. Maximal degree in co-relation 49167. Up to 7149 conditions per place. [2024-06-27 18:51:01,978 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 389 selfloop transitions, 65 changer transitions 0/463 dead transitions. [2024-06-27 18:51:01,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 463 transitions, 6400 flow [2024-06-27 18:51:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:51:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:51:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-27 18:51:01,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157657657657657 [2024-06-27 18:51:01,979 INFO L175 Difference]: Start difference. First operand has 479 places, 401 transitions, 5142 flow. Second operand 12 states and 229 transitions. [2024-06-27 18:51:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 463 transitions, 6400 flow [2024-06-27 18:51:04,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 463 transitions, 6216 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-27 18:51:04,916 INFO L231 Difference]: Finished difference. Result has 478 places, 403 transitions, 5109 flow [2024-06-27 18:51:04,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4958, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5109, PETRI_PLACES=478, PETRI_TRANSITIONS=403} [2024-06-27 18:51:04,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 437 predicate places. [2024-06-27 18:51:04,917 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 403 transitions, 5109 flow [2024-06-27 18:51:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:04,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:04,917 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 18:51:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:51:04,918 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:04,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1133450161, now seen corresponding path program 6 times [2024-06-27 18:51:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:04,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025963436] [2024-06-27 18:51:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:06,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:06,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025963436] [2024-06-27 18:51:06,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025963436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:06,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:06,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:06,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957009194] [2024-06-27 18:51:06,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:06,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:06,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:06,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:51:06,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 403 transitions, 5109 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:06,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:06,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:51:06,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:08,895 INFO L124 PetriNetUnfolderBase]: 4775/8914 cut-off events. [2024-06-27 18:51:08,895 INFO L125 PetriNetUnfolderBase]: For 291318/291420 co-relation queries the response was YES. [2024-06-27 18:51:09,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49249 conditions, 8914 events. 4775/8914 cut-off events. For 291318/291420 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 73976 event pairs, 1627 based on Foata normal form. 74/8928 useless extension candidates. Maximal degree in co-relation 49032. Up to 7377 conditions per place. [2024-06-27 18:51:09,053 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 374 selfloop transitions, 71 changer transitions 0/454 dead transitions. [2024-06-27 18:51:09,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 454 transitions, 6265 flow [2024-06-27 18:51:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:51:09,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085995085995086 [2024-06-27 18:51:09,055 INFO L175 Difference]: Start difference. First operand has 478 places, 403 transitions, 5109 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:51:09,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 454 transitions, 6265 flow [2024-06-27 18:51:12,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 454 transitions, 6140 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:12,313 INFO L231 Difference]: Finished difference. Result has 480 places, 404 transitions, 5152 flow [2024-06-27 18:51:12,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4984, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5152, PETRI_PLACES=480, PETRI_TRANSITIONS=404} [2024-06-27 18:51:12,315 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 18:51:12,315 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 404 transitions, 5152 flow [2024-06-27 18:51:12,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:12,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:12,316 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 18:51:12,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:51:12,316 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:12,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:12,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1126778837, now seen corresponding path program 17 times [2024-06-27 18:51:12,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:12,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910668414] [2024-06-27 18:51:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:12,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:13,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:13,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910668414] [2024-06-27 18:51:13,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910668414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:13,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:13,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:51:13,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626937835] [2024-06-27 18:51:13,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:13,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:51:13,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:51:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:51:13,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:51:13,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 404 transitions, 5152 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:51:13,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:13,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:51:13,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:16,235 INFO L124 PetriNetUnfolderBase]: 4900/9131 cut-off events. [2024-06-27 18:51:16,236 INFO L125 PetriNetUnfolderBase]: For 455692/455794 co-relation queries the response was YES. [2024-06-27 18:51:16,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51894 conditions, 9131 events. 4900/9131 cut-off events. For 455692/455794 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 76158 event pairs, 1682 based on Foata normal form. 80/9150 useless extension candidates. Maximal degree in co-relation 51676. Up to 7099 conditions per place. [2024-06-27 18:51:16,385 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 390 selfloop transitions, 63 changer transitions 0/462 dead transitions. [2024-06-27 18:51:16,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 462 transitions, 6678 flow [2024-06-27 18:51:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 18:51:16,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257985257985258 [2024-06-27 18:51:16,387 INFO L175 Difference]: Start difference. First operand has 480 places, 404 transitions, 5152 flow. Second operand 11 states and 214 transitions. [2024-06-27 18:51:16,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 462 transitions, 6678 flow [2024-06-27 18:51:19,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 462 transitions, 6520 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:19,775 INFO L231 Difference]: Finished difference. Result has 482 places, 404 transitions, 5123 flow [2024-06-27 18:51:19,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4994, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5123, PETRI_PLACES=482, PETRI_TRANSITIONS=404} [2024-06-27 18:51:19,775 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-27 18:51:19,775 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 404 transitions, 5123 flow [2024-06-27 18:51:19,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 18:51:19,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:19,776 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 18:51:19,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:51:19,776 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:19,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:19,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1133212577, now seen corresponding path program 18 times [2024-06-27 18:51:19,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:19,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614909609] [2024-06-27 18:51:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:19,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:20,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:20,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614909609] [2024-06-27 18:51:20,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614909609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:20,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:20,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:20,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068939353] [2024-06-27 18:51:20,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:20,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:20,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:20,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:20,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:21,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:51:21,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 404 transitions, 5123 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:21,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:21,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:51:21,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:23,599 INFO L124 PetriNetUnfolderBase]: 4887/9142 cut-off events. [2024-06-27 18:51:23,599 INFO L125 PetriNetUnfolderBase]: For 380238/380340 co-relation queries the response was YES. [2024-06-27 18:51:23,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50319 conditions, 9142 events. 4887/9142 cut-off events. For 380238/380340 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 76459 event pairs, 1667 based on Foata normal form. 82/9164 useless extension candidates. Maximal degree in co-relation 50100. Up to 7431 conditions per place. [2024-06-27 18:51:23,765 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 385 selfloop transitions, 70 changer transitions 0/464 dead transitions. [2024-06-27 18:51:23,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 464 transitions, 6369 flow [2024-06-27 18:51:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:51:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:51:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-27 18:51:23,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 18:51:23,766 INFO L175 Difference]: Start difference. First operand has 482 places, 404 transitions, 5123 flow. Second operand 12 states and 228 transitions. [2024-06-27 18:51:23,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 464 transitions, 6369 flow [2024-06-27 18:51:27,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 464 transitions, 6244 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:27,119 INFO L231 Difference]: Finished difference. Result has 485 places, 404 transitions, 5143 flow [2024-06-27 18:51:27,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4998, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5143, PETRI_PLACES=485, PETRI_TRANSITIONS=404} [2024-06-27 18:51:27,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-27 18:51:27,120 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 404 transitions, 5143 flow [2024-06-27 18:51:27,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:27,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:27,120 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 18:51:27,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:51:27,120 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:27,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:27,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1133458531, now seen corresponding path program 7 times [2024-06-27 18:51:27,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:27,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814467262] [2024-06-27 18:51:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:27,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:28,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814467262] [2024-06-27 18:51:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814467262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:28,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:28,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399518432] [2024-06-27 18:51:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:28,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:28,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:51:28,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 404 transitions, 5143 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:28,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:28,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:51:28,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:31,522 INFO L124 PetriNetUnfolderBase]: 5067/9496 cut-off events. [2024-06-27 18:51:31,523 INFO L125 PetriNetUnfolderBase]: For 430941/431043 co-relation queries the response was YES. [2024-06-27 18:51:31,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53916 conditions, 9496 events. 5067/9496 cut-off events. For 430941/431043 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 80194 event pairs, 1767 based on Foata normal form. 74/9510 useless extension candidates. Maximal degree in co-relation 53696. Up to 7509 conditions per place. [2024-06-27 18:51:31,665 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 378 selfloop transitions, 74 changer transitions 0/461 dead transitions. [2024-06-27 18:51:31,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 461 transitions, 6681 flow [2024-06-27 18:51:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 18:51:31,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208845208845209 [2024-06-27 18:51:31,666 INFO L175 Difference]: Start difference. First operand has 485 places, 404 transitions, 5143 flow. Second operand 11 states and 212 transitions. [2024-06-27 18:51:31,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 461 transitions, 6681 flow [2024-06-27 18:51:35,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 461 transitions, 6544 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:51:35,211 INFO L231 Difference]: Finished difference. Result has 486 places, 406 transitions, 5204 flow [2024-06-27 18:51:35,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5006, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5204, PETRI_PLACES=486, PETRI_TRANSITIONS=406} [2024-06-27 18:51:35,212 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-27 18:51:35,212 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 406 transitions, 5204 flow [2024-06-27 18:51:35,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:35,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:35,212 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 18:51:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:51:35,212 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:35,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash 960729631, now seen corresponding path program 8 times [2024-06-27 18:51:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:35,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876041527] [2024-06-27 18:51:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876041527] [2024-06-27 18:51:36,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876041527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:36,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:36,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589712750] [2024-06-27 18:51:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:36,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:36,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:36,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:36,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:51:36,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 406 transitions, 5204 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:36,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:36,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:51:36,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:39,379 INFO L124 PetriNetUnfolderBase]: 5072/9379 cut-off events. [2024-06-27 18:51:39,379 INFO L125 PetriNetUnfolderBase]: For 415731/415846 co-relation queries the response was YES. [2024-06-27 18:51:39,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53598 conditions, 9379 events. 5072/9379 cut-off events. For 415731/415846 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 78244 event pairs, 1820 based on Foata normal form. 86/9398 useless extension candidates. Maximal degree in co-relation 53377. Up to 8224 conditions per place. [2024-06-27 18:51:39,548 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 393 selfloop transitions, 53 changer transitions 0/455 dead transitions. [2024-06-27 18:51:39,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 455 transitions, 6338 flow [2024-06-27 18:51:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:51:39,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49385749385749383 [2024-06-27 18:51:39,550 INFO L175 Difference]: Start difference. First operand has 486 places, 406 transitions, 5204 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:51:39,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 455 transitions, 6338 flow [2024-06-27 18:51:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 455 transitions, 6225 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:51:43,519 INFO L231 Difference]: Finished difference. Result has 490 places, 406 transitions, 5201 flow [2024-06-27 18:51:43,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5091, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5201, PETRI_PLACES=490, PETRI_TRANSITIONS=406} [2024-06-27 18:51:43,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 449 predicate places. [2024-06-27 18:51:43,520 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 406 transitions, 5201 flow [2024-06-27 18:51:43,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:43,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:43,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:51:43,524 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:43,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:43,524 INFO L85 PathProgramCache]: Analyzing trace with hash 960549707, now seen corresponding path program 19 times [2024-06-27 18:51:43,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:43,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009995634] [2024-06-27 18:51:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:44,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:44,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009995634] [2024-06-27 18:51:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009995634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:44,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162326842] [2024-06-27 18:51:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:44,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:44,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:51:44,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 406 transitions, 5201 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:44,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:44,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:51:44,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:47,573 INFO L124 PetriNetUnfolderBase]: 5162/9538 cut-off events. [2024-06-27 18:51:47,574 INFO L125 PetriNetUnfolderBase]: For 504845/504960 co-relation queries the response was YES. [2024-06-27 18:51:47,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54535 conditions, 9538 events. 5162/9538 cut-off events. For 504845/504960 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 79752 event pairs, 1831 based on Foata normal form. 94/9565 useless extension candidates. Maximal degree in co-relation 54312. Up to 8179 conditions per place. [2024-06-27 18:51:47,754 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 405 selfloop transitions, 59 changer transitions 0/473 dead transitions. [2024-06-27 18:51:47,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 473 transitions, 6509 flow [2024-06-27 18:51:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:51:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:51:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 240 transitions. [2024-06-27 18:51:47,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498960498960499 [2024-06-27 18:51:47,772 INFO L175 Difference]: Start difference. First operand has 490 places, 406 transitions, 5201 flow. Second operand 13 states and 240 transitions. [2024-06-27 18:51:47,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 473 transitions, 6509 flow [2024-06-27 18:51:52,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 473 transitions, 6359 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 18:51:52,646 INFO L231 Difference]: Finished difference. Result has 493 places, 408 transitions, 5198 flow [2024-06-27 18:51:52,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5053, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5198, PETRI_PLACES=493, PETRI_TRANSITIONS=408} [2024-06-27 18:51:52,646 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-27 18:51:52,646 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 408 transitions, 5198 flow [2024-06-27 18:51:52,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:52,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:52,647 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 18:51:52,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:51:52,647 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:52,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:52,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1450856415, now seen corresponding path program 20 times [2024-06-27 18:51:52,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:52,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471944017] [2024-06-27 18:51:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:52,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:54,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471944017] [2024-06-27 18:51:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471944017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:54,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:54,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:54,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567420794] [2024-06-27 18:51:54,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:54,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:54,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:54,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:54,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:51:54,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 408 transitions, 5198 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:54,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:54,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:51:54,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:57,521 INFO L124 PetriNetUnfolderBase]: 5246/9665 cut-off events. [2024-06-27 18:51:57,521 INFO L125 PetriNetUnfolderBase]: For 533255/533352 co-relation queries the response was YES. [2024-06-27 18:51:57,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55248 conditions, 9665 events. 5246/9665 cut-off events. For 533255/533352 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 80821 event pairs, 1927 based on Foata normal form. 76/9674 useless extension candidates. Maximal degree in co-relation 55023. Up to 8404 conditions per place. [2024-06-27 18:51:57,669 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 411 selfloop transitions, 47 changer transitions 0/467 dead transitions. [2024-06-27 18:51:57,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 467 transitions, 6464 flow [2024-06-27 18:51:57,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:51:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:51:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-27 18:51:57,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 18:51:57,670 INFO L175 Difference]: Start difference. First operand has 493 places, 408 transitions, 5198 flow. Second operand 12 states and 220 transitions. [2024-06-27 18:51:57,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 467 transitions, 6464 flow [2024-06-27 18:52:01,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 467 transitions, 6343 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 18:52:01,458 INFO L231 Difference]: Finished difference. Result has 493 places, 409 transitions, 5205 flow [2024-06-27 18:52:01,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5205, PETRI_PLACES=493, PETRI_TRANSITIONS=409} [2024-06-27 18:52:01,459 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-27 18:52:01,459 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 409 transitions, 5205 flow [2024-06-27 18:52:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:01,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:01,459 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 18:52:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:52:01,459 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:01,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1514992839, now seen corresponding path program 21 times [2024-06-27 18:52:01,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:01,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394322598] [2024-06-27 18:52:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:02,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:02,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394322598] [2024-06-27 18:52:02,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394322598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:02,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:02,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303127737] [2024-06-27 18:52:02,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:02,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:02,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:02,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:02,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:52:02,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 409 transitions, 5205 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:02,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:02,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:52:02,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:06,014 INFO L124 PetriNetUnfolderBase]: 5395/10010 cut-off events. [2024-06-27 18:52:06,014 INFO L125 PetriNetUnfolderBase]: For 600056/600159 co-relation queries the response was YES. [2024-06-27 18:52:06,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58101 conditions, 10010 events. 5395/10010 cut-off events. For 600056/600159 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 84861 event pairs, 1905 based on Foata normal form. 80/10022 useless extension candidates. Maximal degree in co-relation 57876. Up to 8333 conditions per place. [2024-06-27 18:52:06,311 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 408 selfloop transitions, 57 changer transitions 0/474 dead transitions. [2024-06-27 18:52:06,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 474 transitions, 6804 flow [2024-06-27 18:52:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:52:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:52:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-06-27 18:52:06,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112612612612613 [2024-06-27 18:52:06,312 INFO L175 Difference]: Start difference. First operand has 493 places, 409 transitions, 5205 flow. Second operand 12 states and 227 transitions. [2024-06-27 18:52:06,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 474 transitions, 6804 flow [2024-06-27 18:52:11,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 474 transitions, 6698 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 18:52:11,142 INFO L231 Difference]: Finished difference. Result has 496 places, 410 transitions, 5231 flow [2024-06-27 18:52:11,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5099, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5231, PETRI_PLACES=496, PETRI_TRANSITIONS=410} [2024-06-27 18:52:11,142 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 455 predicate places. [2024-06-27 18:52:11,143 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 410 transitions, 5231 flow [2024-06-27 18:52:11,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:11,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:11,143 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 18:52:11,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:52:11,143 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:11,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash -896586263, now seen corresponding path program 22 times [2024-06-27 18:52:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13382303] [2024-06-27 18:52:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:11,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:12,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13382303] [2024-06-27 18:52:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13382303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:12,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:12,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:12,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918488488] [2024-06-27 18:52:12,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:12,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:12,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:12,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:12,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:12,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:52:12,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 410 transitions, 5231 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:12,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:12,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:52:12,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:15,876 INFO L124 PetriNetUnfolderBase]: 5644/10167 cut-off events. [2024-06-27 18:52:15,877 INFO L125 PetriNetUnfolderBase]: For 723619/723758 co-relation queries the response was YES. [2024-06-27 18:52:16,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61779 conditions, 10167 events. 5644/10167 cut-off events. For 723619/723758 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 84231 event pairs, 1921 based on Foata normal form. 107/10199 useless extension candidates. Maximal degree in co-relation 61552. Up to 8497 conditions per place. [2024-06-27 18:52:16,073 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 406 selfloop transitions, 75 changer transitions 0/490 dead transitions. [2024-06-27 18:52:16,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 490 transitions, 7317 flow [2024-06-27 18:52:16,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:52:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:52:16,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-27 18:52:16,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 18:52:16,074 INFO L175 Difference]: Start difference. First operand has 496 places, 410 transitions, 5231 flow. Second operand 12 states and 224 transitions. [2024-06-27 18:52:16,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 490 transitions, 7317 flow [2024-06-27 18:52:22,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 490 transitions, 7210 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:22,672 INFO L231 Difference]: Finished difference. Result has 504 places, 421 transitions, 5608 flow [2024-06-27 18:52:22,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5124, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5608, PETRI_PLACES=504, PETRI_TRANSITIONS=421} [2024-06-27 18:52:22,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 463 predicate places. [2024-06-27 18:52:22,673 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 421 transitions, 5608 flow [2024-06-27 18:52:22,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:22,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:22,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:22,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:52:22,673 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:22,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash 960722687, now seen corresponding path program 23 times [2024-06-27 18:52:22,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:22,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938865210] [2024-06-27 18:52:22,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:22,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:25,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:25,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938865210] [2024-06-27 18:52:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938865210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:25,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374630145] [2024-06-27 18:52:25,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:25,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:25,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:25,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:25,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:52:25,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 421 transitions, 5608 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:25,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:25,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:52:25,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:28,930 INFO L124 PetriNetUnfolderBase]: 5628/10412 cut-off events. [2024-06-27 18:52:28,931 INFO L125 PetriNetUnfolderBase]: For 658818/658935 co-relation queries the response was YES. [2024-06-27 18:52:29,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62057 conditions, 10412 events. 5628/10412 cut-off events. For 658818/658935 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 88793 event pairs, 2143 based on Foata normal form. 96/10435 useless extension candidates. Maximal degree in co-relation 61824. Up to 9065 conditions per place. [2024-06-27 18:52:29,143 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 416 selfloop transitions, 55 changer transitions 0/480 dead transitions. [2024-06-27 18:52:29,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 480 transitions, 6886 flow [2024-06-27 18:52:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:52:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:52:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-27 18:52:29,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:52:29,145 INFO L175 Difference]: Start difference. First operand has 504 places, 421 transitions, 5608 flow. Second operand 12 states and 222 transitions. [2024-06-27 18:52:29,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 480 transitions, 6886 flow [2024-06-27 18:52:35,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 480 transitions, 6704 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-27 18:52:35,307 INFO L231 Difference]: Finished difference. Result has 513 places, 421 transitions, 5542 flow [2024-06-27 18:52:35,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5426, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5542, PETRI_PLACES=513, PETRI_TRANSITIONS=421} [2024-06-27 18:52:35,307 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 472 predicate places. [2024-06-27 18:52:35,307 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 421 transitions, 5542 flow [2024-06-27 18:52:35,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:35,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:35,308 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 18:52:35,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:52:35,308 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:35,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash 955961087, now seen corresponding path program 24 times [2024-06-27 18:52:35,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:35,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293515641] [2024-06-27 18:52:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293515641] [2024-06-27 18:52:36,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293515641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:36,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:36,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764809181] [2024-06-27 18:52:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:36,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:36,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:52:36,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 421 transitions, 5542 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:36,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:36,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:52:36,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:40,043 INFO L124 PetriNetUnfolderBase]: 5857/10592 cut-off events. [2024-06-27 18:52:40,044 INFO L125 PetriNetUnfolderBase]: For 737326/737493 co-relation queries the response was YES. [2024-06-27 18:52:40,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65213 conditions, 10592 events. 5857/10592 cut-off events. For 737326/737493 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 88708 event pairs, 1698 based on Foata normal form. 132/10656 useless extension candidates. Maximal degree in co-relation 64978. Up to 7015 conditions per place. [2024-06-27 18:52:40,405 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 385 selfloop transitions, 110 changer transitions 0/504 dead transitions. [2024-06-27 18:52:40,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 504 transitions, 7779 flow [2024-06-27 18:52:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:52:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:52:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-27 18:52:40,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180180180180181 [2024-06-27 18:52:40,407 INFO L175 Difference]: Start difference. First operand has 513 places, 421 transitions, 5542 flow. Second operand 12 states and 230 transitions. [2024-06-27 18:52:40,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 504 transitions, 7779 flow [2024-06-27 18:52:46,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 504 transitions, 7669 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:52:46,768 INFO L231 Difference]: Finished difference. Result has 519 places, 429 transitions, 6017 flow [2024-06-27 18:52:46,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5432, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6017, PETRI_PLACES=519, PETRI_TRANSITIONS=429} [2024-06-27 18:52:46,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 18:52:46,769 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 429 transitions, 6017 flow [2024-06-27 18:52:46,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:46,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:46,769 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 18:52:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:52:46,770 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:46,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1444362721, now seen corresponding path program 9 times [2024-06-27 18:52:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:46,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535865291] [2024-06-27 18:52:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:46,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:48,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:48,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535865291] [2024-06-27 18:52:48,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535865291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:48,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:48,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:48,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265722989] [2024-06-27 18:52:48,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:48,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:48,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:48,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:48,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:52:48,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 429 transitions, 6017 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:48,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:48,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:52:48,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:51,799 INFO L124 PetriNetUnfolderBase]: 5876/10860 cut-off events. [2024-06-27 18:52:51,799 INFO L125 PetriNetUnfolderBase]: For 694288/694401 co-relation queries the response was YES. [2024-06-27 18:52:51,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67786 conditions, 10860 events. 5876/10860 cut-off events. For 694288/694401 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 93331 event pairs, 2415 based on Foata normal form. 76/10860 useless extension candidates. Maximal degree in co-relation 67545. Up to 9855 conditions per place. [2024-06-27 18:52:51,997 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 430 selfloop transitions, 39 changer transitions 0/478 dead transitions. [2024-06-27 18:52:51,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 478 transitions, 7217 flow [2024-06-27 18:52:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:52:51,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:52:51,998 INFO L175 Difference]: Start difference. First operand has 519 places, 429 transitions, 6017 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:52:51,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 478 transitions, 7217 flow [2024-06-27 18:52:59,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 478 transitions, 7007 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-27 18:52:59,182 INFO L231 Difference]: Finished difference. Result has 526 places, 430 transitions, 5917 flow [2024-06-27 18:52:59,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5807, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5917, PETRI_PLACES=526, PETRI_TRANSITIONS=430} [2024-06-27 18:52:59,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 485 predicate places. [2024-06-27 18:52:59,182 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 430 transitions, 5917 flow [2024-06-27 18:52:59,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:59,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:59,183 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 18:52:59,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:52:59,183 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:59,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1444600305, now seen corresponding path program 25 times [2024-06-27 18:52:59,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:59,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174321884] [2024-06-27 18:52:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:59,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:00,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:00,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174321884] [2024-06-27 18:53:00,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174321884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:00,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:00,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:00,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912909699] [2024-06-27 18:53:00,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:00,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:00,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:00,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:53:00,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 430 transitions, 5917 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:00,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:00,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:53:00,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:04,408 INFO L124 PetriNetUnfolderBase]: 5905/10983 cut-off events. [2024-06-27 18:53:04,408 INFO L125 PetriNetUnfolderBase]: For 733100/733207 co-relation queries the response was YES. [2024-06-27 18:53:04,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65983 conditions, 10983 events. 5905/10983 cut-off events. For 733100/733207 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 95162 event pairs, 2390 based on Foata normal form. 86/10997 useless extension candidates. Maximal degree in co-relation 65740. Up to 9583 conditions per place. [2024-06-27 18:53:04,617 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 433 selfloop transitions, 46 changer transitions 0/488 dead transitions. [2024-06-27 18:53:04,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 488 transitions, 7205 flow [2024-06-27 18:53:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:53:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:53:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-27 18:53:04,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49774774774774777 [2024-06-27 18:53:04,618 INFO L175 Difference]: Start difference. First operand has 526 places, 430 transitions, 5917 flow. Second operand 12 states and 221 transitions. [2024-06-27 18:53:04,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 488 transitions, 7205 flow