./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix009.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix009.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:16:02,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:16:02,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:16:02,216 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:16:02,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:16:02,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:16:02,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:16:02,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:16:02,241 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:16:02,244 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:16:02,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:16:02,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:16:02,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:16:02,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:16:02,247 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:16:02,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:16:02,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:16:02,248 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:16:02,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:16:02,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:16:02,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:16:02,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:16:02,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:16:02,249 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:16:02,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:16:02,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:16:02,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:16:02,250 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:16:02,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:16:02,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:16:02,252 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:16:02,252 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:16:02,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:16:02,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:16:02,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:16:02,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:16:02,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:16:02,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:16:02,253 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:16:02,254 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:16:02,254 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:16:02,254 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:16:02,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:16:02,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:16:02,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:16:02,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:16:02,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:16:02,485 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:16:02,485 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:16:02,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix009.opt.yml/witness.yml [2024-06-27 18:16:02,629 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:16:02,629 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:16:02,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-27 18:16:03,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:16:03,883 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:16:03,884 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.opt.i [2024-06-27 18:16:03,897 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b109129cc/5195863901c9465f8074b92cf3146892/FLAGe09187e4a [2024-06-27 18:16:03,911 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b109129cc/5195863901c9465f8074b92cf3146892 [2024-06-27 18:16:03,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:16:03,913 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:16:03,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:16:03,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:16:03,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:16:03,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:16:02" (1/2) ... [2024-06-27 18:16:03,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26874c6d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:03, skipping insertion in model container [2024-06-27 18:16:03,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:16:02" (1/2) ... [2024-06-27 18:16:03,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fed2e52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:16:03, skipping insertion in model container [2024-06-27 18:16:03,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:16:03" (2/2) ... [2024-06-27 18:16:03,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26874c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:03, skipping insertion in model container [2024-06-27 18:16:03,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:16:03" (2/2) ... [2024-06-27 18:16:03,925 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:16:03,988 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:16:03,992 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:16:03,992 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) [2024-06-27 18:16:03,993 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:16:03,993 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-27 18:16:04,032 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:16:04,181 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/mix009.opt.i[987,1000] [2024-06-27 18:16:04,361 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:16:04,371 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:16:04,401 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/mix009.opt.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:16:04,455 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:16:04,489 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:16:04,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04 WrapperNode [2024-06-27 18:16:04,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:16:04,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:16:04,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:16:04,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:16:04,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,529 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2024-06-27 18:16:04,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:16:04,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:16:04,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:16:04,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:16:04,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,543 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,556 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 18:16:04,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,563 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:16:04,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:16:04,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:16:04,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:16:04,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (1/1) ... [2024-06-27 18:16:04,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:16:04,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:16:04,609 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 18:16:04,628 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 18:16:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:16:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:16:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:16:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:16:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:16:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:16:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:16:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:16:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:16:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:16:04,651 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 18:16:04,746 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:16:04,748 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:16:05,043 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:16:05,043 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:16:05,196 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:16:05,196 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:16:05,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:16:05 BoogieIcfgContainer [2024-06-27 18:16:05,198 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:16:05,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:16:05,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:16:05,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:16:05,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:16:02" (1/4) ... [2024-06-27 18:16:05,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366b9992 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:16:05, skipping insertion in model container [2024-06-27 18:16:05,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:16:03" (2/4) ... [2024-06-27 18:16:05,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366b9992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:16:05, skipping insertion in model container [2024-06-27 18:16:05,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:16:04" (3/4) ... [2024-06-27 18:16:05,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366b9992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:16:05, skipping insertion in model container [2024-06-27 18:16:05,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:16:05" (4/4) ... [2024-06-27 18:16:05,212 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.opt.i [2024-06-27 18:16:05,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:16:05,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:16:05,227 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:16:05,260 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:16:05,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 18:16:05,318 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-27 18:16:05,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:16:05,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-27 18:16:05,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 18:16:05,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-27 18:16:05,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:16:05,344 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;@1aa3346b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:16:05,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:16:05,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:16:05,348 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:16:05,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:16:05,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:05,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:16:05,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:05,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:05,357 INFO L85 PathProgramCache]: Analyzing trace with hash 347538124, now seen corresponding path program 1 times [2024-06-27 18:16:05,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:05,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904438168] [2024-06-27 18:16:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904438168] [2024-06-27 18:16:06,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904438168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:06,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:16:06,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290152183] [2024-06-27 18:16:06,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:06,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:16:06,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:16:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:16:06,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 18:16:06,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:06,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:06,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 18:16:06,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:06,405 INFO L124 PetriNetUnfolderBase]: 472/846 cut-off events. [2024-06-27 18:16:06,406 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:16:06,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 846 events. 472/846 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4467 event pairs, 210 based on Foata normal form. 43/832 useless extension candidates. Maximal degree in co-relation 1642. Up to 780 conditions per place. [2024-06-27 18:16:06,415 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 30 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-27 18:16:06,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2024-06-27 18:16:06,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:16:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:16:06,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-27 18:16:06,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-27 18:16:06,428 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 80 transitions. [2024-06-27 18:16:06,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2024-06-27 18:16:06,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:06,434 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-06-27 18:16:06,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-27 18:16:06,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-27 18:16:06,439 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-06-27 18:16:06,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:06,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:06,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:06,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:16:06,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:06,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:06,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1023223257, now seen corresponding path program 1 times [2024-06-27 18:16:06,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854268618] [2024-06-27 18:16:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:06,919 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 18:16:06,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:06,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854268618] [2024-06-27 18:16:06,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854268618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:06,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:06,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:16:06,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439897667] [2024-06-27 18:16:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:06,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:16:06,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:06,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:16:06,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:16:06,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 18:16:06,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 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 18:16:06,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:06,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 18:16:06,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:07,132 INFO L124 PetriNetUnfolderBase]: 539/1075 cut-off events. [2024-06-27 18:16:07,133 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 18:16:07,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 1075 events. 539/1075 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6196 event pairs, 355 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 2187. Up to 870 conditions per place. [2024-06-27 18:16:07,140 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-27 18:16:07,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 240 flow [2024-06-27 18:16:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:16:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:16:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-27 18:16:07,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-06-27 18:16:07,143 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 4 states and 100 transitions. [2024-06-27 18:16:07,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 240 flow [2024-06-27 18:16:07,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:07,146 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 136 flow [2024-06-27 18:16:07,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-27 18:16:07,146 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-27 18:16:07,147 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 136 flow [2024-06-27 18:16:07,147 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 18:16:07,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:07,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:07,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:16:07,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:07,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1655148865, now seen corresponding path program 1 times [2024-06-27 18:16:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806571314] [2024-06-27 18:16:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:07,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:07,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806571314] [2024-06-27 18:16:07,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806571314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:07,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:07,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:16:07,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228632207] [2024-06-27 18:16:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:16:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:07,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:16:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:16:07,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:16:07,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:07,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:07,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:16:07,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:07,819 INFO L124 PetriNetUnfolderBase]: 636/1099 cut-off events. [2024-06-27 18:16:07,820 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2024-06-27 18:16:07,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 1099 events. 636/1099 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5674 event pairs, 252 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 2603. Up to 1008 conditions per place. [2024-06-27 18:16:07,826 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 48 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-27 18:16:07,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 68 transitions, 320 flow [2024-06-27 18:16:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:16:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:16:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-27 18:16:07,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-27 18:16:07,831 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 136 flow. Second operand 5 states and 120 transitions. [2024-06-27 18:16:07,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 68 transitions, 320 flow [2024-06-27 18:16:07,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 306 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:07,835 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 170 flow [2024-06-27 18:16:07,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-06-27 18:16:07,836 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-27 18:16:07,836 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 170 flow [2024-06-27 18:16:07,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:07,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:07,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:07,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:16:07,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:07,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:07,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1657516553, now seen corresponding path program 1 times [2024-06-27 18:16:07,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:07,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022094055] [2024-06-27 18:16:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:07,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:07,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022094055] [2024-06-27 18:16:07,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022094055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:07,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:07,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:16:07,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182340957] [2024-06-27 18:16:07,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:07,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:16:07,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:16:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:16:07,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-06-27 18:16:07,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:07,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:07,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-06-27 18:16:07,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:08,005 INFO L124 PetriNetUnfolderBase]: 204/563 cut-off events. [2024-06-27 18:16:08,006 INFO L125 PetriNetUnfolderBase]: For 250/277 co-relation queries the response was YES. [2024-06-27 18:16:08,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 563 events. 204/563 cut-off events. For 250/277 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3657 event pairs, 91 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 1103. Up to 333 conditions per place. [2024-06-27 18:16:08,009 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 21 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-06-27 18:16:08,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 207 flow [2024-06-27 18:16:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:16:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:16:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-06-27 18:16:08,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-06-27 18:16:08,011 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 170 flow. Second operand 3 states and 84 transitions. [2024-06-27 18:16:08,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 207 flow [2024-06-27 18:16:08,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 192 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:08,014 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 136 flow [2024-06-27 18:16:08,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-27 18:16:08,015 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2024-06-27 18:16:08,015 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 136 flow [2024-06-27 18:16:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:08,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:08,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:08,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:16:08,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:08,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash 232794958, now seen corresponding path program 1 times [2024-06-27 18:16:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:08,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646186994] [2024-06-27 18:16:08,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:08,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:08,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646186994] [2024-06-27 18:16:08,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646186994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:08,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:08,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:16:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882879785] [2024-06-27 18:16:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:08,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:16:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:16:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:16:08,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:16:08,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:08,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:08,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:16:08,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:08,715 INFO L124 PetriNetUnfolderBase]: 549/1037 cut-off events. [2024-06-27 18:16:08,715 INFO L125 PetriNetUnfolderBase]: For 659/659 co-relation queries the response was YES. [2024-06-27 18:16:08,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 1037 events. 549/1037 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5611 event pairs, 233 based on Foata normal form. 4/1007 useless extension candidates. Maximal degree in co-relation 2406. Up to 834 conditions per place. [2024-06-27 18:16:08,721 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 51 selfloop transitions, 9 changer transitions 5/75 dead transitions. [2024-06-27 18:16:08,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 352 flow [2024-06-27 18:16:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:08,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:08,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:16:08,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6096491228070176 [2024-06-27 18:16:08,723 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 136 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:16:08,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 352 flow [2024-06-27 18:16:08,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 75 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:08,727 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 163 flow [2024-06-27 18:16:08,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-27 18:16:08,731 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-27 18:16:08,731 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 163 flow [2024-06-27 18:16:08,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:08,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:08,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:08,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:16:08,733 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:08,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:08,733 INFO L85 PathProgramCache]: Analyzing trace with hash 558367265, now seen corresponding path program 1 times [2024-06-27 18:16:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:08,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536335270] [2024-06-27 18:16:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:08,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:09,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:09,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536335270] [2024-06-27 18:16:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536335270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:09,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:09,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:16:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713997734] [2024-06-27 18:16:09,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:09,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:16:09,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:16:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:16:09,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:16:09,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:09,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:09,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:16:09,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:09,372 INFO L124 PetriNetUnfolderBase]: 430/891 cut-off events. [2024-06-27 18:16:09,372 INFO L125 PetriNetUnfolderBase]: For 727/729 co-relation queries the response was YES. [2024-06-27 18:16:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 891 events. 430/891 cut-off events. For 727/729 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5036 event pairs, 176 based on Foata normal form. 3/867 useless extension candidates. Maximal degree in co-relation 2129. Up to 712 conditions per place. [2024-06-27 18:16:09,377 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-27 18:16:09,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 301 flow [2024-06-27 18:16:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:16:09,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:16:09,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-27 18:16:09,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:16:09,379 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 163 flow. Second operand 5 states and 100 transitions. [2024-06-27 18:16:09,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 301 flow [2024-06-27 18:16:09,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 276 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:09,383 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 193 flow [2024-06-27 18:16:09,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 18:16:09,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-27 18:16:09,386 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 193 flow [2024-06-27 18:16:09,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:09,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:09,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:09,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:16:09,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:09,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash 162585200, now seen corresponding path program 1 times [2024-06-27 18:16:09,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169318183] [2024-06-27 18:16:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:10,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:10,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169318183] [2024-06-27 18:16:10,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169318183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:10,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:10,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:10,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293375775] [2024-06-27 18:16:10,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:10,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:10,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:10,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:10,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:10,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:16:10,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:10,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:10,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:16:10,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:10,350 INFO L124 PetriNetUnfolderBase]: 432/880 cut-off events. [2024-06-27 18:16:10,351 INFO L125 PetriNetUnfolderBase]: For 867/869 co-relation queries the response was YES. [2024-06-27 18:16:10,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 880 events. 432/880 cut-off events. For 867/869 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4907 event pairs, 173 based on Foata normal form. 4/861 useless extension candidates. Maximal degree in co-relation 2225. Up to 694 conditions per place. [2024-06-27 18:16:10,355 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 45 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2024-06-27 18:16:10,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 349 flow [2024-06-27 18:16:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:10,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:10,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-27 18:16:10,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:16:10,357 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 193 flow. Second operand 6 states and 120 transitions. [2024-06-27 18:16:10,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 349 flow [2024-06-27 18:16:10,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 340 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:10,360 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 219 flow [2024-06-27 18:16:10,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-27 18:16:10,361 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-27 18:16:10,361 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 219 flow [2024-06-27 18:16:10,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:10,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:10,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:10,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:16:10,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:10,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash 744867512, now seen corresponding path program 1 times [2024-06-27 18:16:10,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:10,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593816046] [2024-06-27 18:16:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:10,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593816046] [2024-06-27 18:16:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593816046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:10,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:10,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:10,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877708781] [2024-06-27 18:16:10,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:10,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:10,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:10,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:10,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 219 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:10,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:10,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:10,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:11,177 INFO L124 PetriNetUnfolderBase]: 522/1011 cut-off events. [2024-06-27 18:16:11,178 INFO L125 PetriNetUnfolderBase]: For 1326/1328 co-relation queries the response was YES. [2024-06-27 18:16:11,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 1011 events. 522/1011 cut-off events. For 1326/1328 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5541 event pairs, 207 based on Foata normal form. 3/986 useless extension candidates. Maximal degree in co-relation 2734. Up to 848 conditions per place. [2024-06-27 18:16:11,183 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 50 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-27 18:16:11,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 401 flow [2024-06-27 18:16:11,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:11,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-27 18:16:11,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 18:16:11,184 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 219 flow. Second operand 6 states and 116 transitions. [2024-06-27 18:16:11,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 401 flow [2024-06-27 18:16:11,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 382 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:11,186 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 261 flow [2024-06-27 18:16:11,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-27 18:16:11,187 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-06-27 18:16:11,187 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 261 flow [2024-06-27 18:16:11,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:11,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:11,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:16:11,188 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:11,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1273484477, now seen corresponding path program 1 times [2024-06-27 18:16:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:11,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396618688] [2024-06-27 18:16:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:11,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396618688] [2024-06-27 18:16:11,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396618688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:11,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:11,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806793078] [2024-06-27 18:16:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:11,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:11,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:11,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:11,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:16:11,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 261 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 18:16:11,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:11,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:16:11,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:12,272 INFO L124 PetriNetUnfolderBase]: 474/939 cut-off events. [2024-06-27 18:16:12,272 INFO L125 PetriNetUnfolderBase]: For 1653/1653 co-relation queries the response was YES. [2024-06-27 18:16:12,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 939 events. 474/939 cut-off events. For 1653/1653 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5147 event pairs, 100 based on Foata normal form. 4/908 useless extension candidates. Maximal degree in co-relation 2658. Up to 694 conditions per place. [2024-06-27 18:16:12,276 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 66 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2024-06-27 18:16:12,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 523 flow [2024-06-27 18:16:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-27 18:16:12,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592105263157895 [2024-06-27 18:16:12,278 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 261 flow. Second operand 8 states and 170 transitions. [2024-06-27 18:16:12,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 523 flow [2024-06-27 18:16:12,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 504 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:12,280 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 279 flow [2024-06-27 18:16:12,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-27 18:16:12,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-27 18:16:12,281 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 279 flow [2024-06-27 18:16:12,281 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 18:16:12,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:12,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:12,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:16:12,281 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:12,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:12,282 INFO L85 PathProgramCache]: Analyzing trace with hash 745164182, now seen corresponding path program 2 times [2024-06-27 18:16:12,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:12,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633980677] [2024-06-27 18:16:12,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:12,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:12,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633980677] [2024-06-27 18:16:12,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633980677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:12,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:12,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:12,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977878735] [2024-06-27 18:16:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:12,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:12,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:12,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:12,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:12,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:12,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:12,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:12,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:12,988 INFO L124 PetriNetUnfolderBase]: 519/1032 cut-off events. [2024-06-27 18:16:12,988 INFO L125 PetriNetUnfolderBase]: For 2171/2179 co-relation queries the response was YES. [2024-06-27 18:16:12,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1032 events. 519/1032 cut-off events. For 2171/2179 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5727 event pairs, 157 based on Foata normal form. 7/1002 useless extension candidates. Maximal degree in co-relation 3028. Up to 822 conditions per place. [2024-06-27 18:16:12,994 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 49 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2024-06-27 18:16:12,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 72 transitions, 457 flow [2024-06-27 18:16:12,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:12,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 18:16:12,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-27 18:16:12,995 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 279 flow. Second operand 6 states and 115 transitions. [2024-06-27 18:16:12,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 72 transitions, 457 flow [2024-06-27 18:16:12,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 421 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:13,001 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 290 flow [2024-06-27 18:16:13,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=290, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-27 18:16:13,002 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-06-27 18:16:13,002 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 290 flow [2024-06-27 18:16:13,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:13,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:13,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:13,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:16:13,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:13,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1082454572, now seen corresponding path program 1 times [2024-06-27 18:16:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098850110] [2024-06-27 18:16:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:13,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:13,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098850110] [2024-06-27 18:16:13,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098850110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:13,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:13,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:13,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623483329] [2024-06-27 18:16:13,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:13,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:13,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:13,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:13,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:13,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 290 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:13,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:13,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:13,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:13,826 INFO L124 PetriNetUnfolderBase]: 599/1124 cut-off events. [2024-06-27 18:16:13,827 INFO L125 PetriNetUnfolderBase]: For 2592/2592 co-relation queries the response was YES. [2024-06-27 18:16:13,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3472 conditions, 1124 events. 599/1124 cut-off events. For 2592/2592 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6028 event pairs, 163 based on Foata normal form. 1/1094 useless extension candidates. Maximal degree in co-relation 3445. Up to 930 conditions per place. [2024-06-27 18:16:13,833 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 64 selfloop transitions, 23 changer transitions 0/95 dead transitions. [2024-06-27 18:16:13,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 615 flow [2024-06-27 18:16:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:16:13,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:16:13,834 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 290 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:16:13,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 615 flow [2024-06-27 18:16:13,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 578 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:13,838 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 437 flow [2024-06-27 18:16:13,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=437, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-27 18:16:13,839 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-27 18:16:13,839 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 437 flow [2024-06-27 18:16:13,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:13,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:13,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:16:13,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:13,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:13,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1907301780, now seen corresponding path program 2 times [2024-06-27 18:16:13,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:13,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962112848] [2024-06-27 18:16:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:14,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:14,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:14,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962112848] [2024-06-27 18:16:14,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962112848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:14,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:14,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:14,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632641426] [2024-06-27 18:16:14,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:14,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:14,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:14,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:14,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:14,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 437 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:14,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:14,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:14,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:14,665 INFO L124 PetriNetUnfolderBase]: 610/1141 cut-off events. [2024-06-27 18:16:14,665 INFO L125 PetriNetUnfolderBase]: For 3363/3363 co-relation queries the response was YES. [2024-06-27 18:16:14,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 1141 events. 610/1141 cut-off events. For 3363/3363 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6091 event pairs, 161 based on Foata normal form. 1/1111 useless extension candidates. Maximal degree in co-relation 3800. Up to 934 conditions per place. [2024-06-27 18:16:14,672 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 66 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2024-06-27 18:16:14,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 98 transitions, 709 flow [2024-06-27 18:16:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:16:14,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-06-27 18:16:14,674 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 437 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:16:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 98 transitions, 709 flow [2024-06-27 18:16:14,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 683 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:14,679 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 488 flow [2024-06-27 18:16:14,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=488, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-06-27 18:16:14,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-27 18:16:14,680 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 488 flow [2024-06-27 18:16:14,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:14,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:14,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:14,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:16:14,681 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:14,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -325430137, now seen corresponding path program 1 times [2024-06-27 18:16:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023884071] [2024-06-27 18:16:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:15,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:15,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023884071] [2024-06-27 18:16:15,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023884071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:15,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:15,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:15,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880337879] [2024-06-27 18:16:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:15,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:15,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:15,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:15,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:15,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:15,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:15,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:15,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:15,601 INFO L124 PetriNetUnfolderBase]: 582/1118 cut-off events. [2024-06-27 18:16:15,601 INFO L125 PetriNetUnfolderBase]: For 3832/3832 co-relation queries the response was YES. [2024-06-27 18:16:15,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3857 conditions, 1118 events. 582/1118 cut-off events. For 3832/3832 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6141 event pairs, 159 based on Foata normal form. 1/1088 useless extension candidates. Maximal degree in co-relation 3825. Up to 898 conditions per place. [2024-06-27 18:16:15,609 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 70 selfloop transitions, 15 changer transitions 0/100 dead transitions. [2024-06-27 18:16:15,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 100 transitions, 748 flow [2024-06-27 18:16:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 18:16:15,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:16:15,610 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 488 flow. Second operand 7 states and 133 transitions. [2024-06-27 18:16:15,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 100 transitions, 748 flow [2024-06-27 18:16:15,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 700 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:15,617 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 489 flow [2024-06-27 18:16:15,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-06-27 18:16:15,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-06-27 18:16:15,618 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 489 flow [2024-06-27 18:16:15,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:15,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:15,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:15,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:16:15,619 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:15,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:15,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1907121360, now seen corresponding path program 3 times [2024-06-27 18:16:15,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:15,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987284732] [2024-06-27 18:16:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:15,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:16,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:16,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987284732] [2024-06-27 18:16:16,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987284732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:16,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:16,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:16,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459565664] [2024-06-27 18:16:16,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:16,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:16,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:16,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 489 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:16,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:16,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:16,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:16,492 INFO L124 PetriNetUnfolderBase]: 632/1178 cut-off events. [2024-06-27 18:16:16,492 INFO L125 PetriNetUnfolderBase]: For 3994/3994 co-relation queries the response was YES. [2024-06-27 18:16:16,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4152 conditions, 1178 events. 632/1178 cut-off events. For 3994/3994 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6330 event pairs, 162 based on Foata normal form. 1/1146 useless extension candidates. Maximal degree in co-relation 4119. Up to 944 conditions per place. [2024-06-27 18:16:16,502 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 66 selfloop transitions, 26 changer transitions 0/100 dead transitions. [2024-06-27 18:16:16,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 757 flow [2024-06-27 18:16:16,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:16,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:16:16,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-06-27 18:16:16,504 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 489 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:16:16,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 757 flow [2024-06-27 18:16:16,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 100 transitions, 724 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:16,511 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 533 flow [2024-06-27 18:16:16,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=533, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-06-27 18:16:16,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-27 18:16:16,512 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 533 flow [2024-06-27 18:16:16,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:16,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:16,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:16,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:16:16,513 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:16,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash -88005787, now seen corresponding path program 2 times [2024-06-27 18:16:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:16,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364399779] [2024-06-27 18:16:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:17,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:17,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364399779] [2024-06-27 18:16:17,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364399779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:17,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:17,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:17,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298921201] [2024-06-27 18:16:17,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:17,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:17,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:17,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:17,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:17,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:17,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 533 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:17,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:17,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:17,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:17,515 INFO L124 PetriNetUnfolderBase]: 606/1229 cut-off events. [2024-06-27 18:16:17,515 INFO L125 PetriNetUnfolderBase]: For 4581/4587 co-relation queries the response was YES. [2024-06-27 18:16:17,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 1229 events. 606/1229 cut-off events. For 4581/4587 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6992 event pairs, 153 based on Foata normal form. 5/1181 useless extension candidates. Maximal degree in co-relation 4197. Up to 877 conditions per place. [2024-06-27 18:16:17,526 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 70 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2024-06-27 18:16:17,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 108 transitions, 859 flow [2024-06-27 18:16:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 18:16:17,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075187969924813 [2024-06-27 18:16:17,527 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 533 flow. Second operand 7 states and 135 transitions. [2024-06-27 18:16:17,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 108 transitions, 859 flow [2024-06-27 18:16:17,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 798 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:17,536 INFO L231 Difference]: Finished difference. Result has 84 places, 84 transitions, 567 flow [2024-06-27 18:16:17,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=567, PETRI_PLACES=84, PETRI_TRANSITIONS=84} [2024-06-27 18:16:17,537 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2024-06-27 18:16:17,537 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 84 transitions, 567 flow [2024-06-27 18:16:17,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:17,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:17,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:17,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:16:17,538 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:17,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash -88332217, now seen corresponding path program 3 times [2024-06-27 18:16:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:17,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442426303] [2024-06-27 18:16:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:17,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:18,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:18,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442426303] [2024-06-27 18:16:18,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442426303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:18,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:18,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389355972] [2024-06-27 18:16:18,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:18,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:18,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:18,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:18,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:18,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:18,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 84 transitions, 567 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:18,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:18,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:18,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:18,530 INFO L124 PetriNetUnfolderBase]: 604/1222 cut-off events. [2024-06-27 18:16:18,530 INFO L125 PetriNetUnfolderBase]: For 5064/5070 co-relation queries the response was YES. [2024-06-27 18:16:18,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4355 conditions, 1222 events. 604/1222 cut-off events. For 5064/5070 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6905 event pairs, 154 based on Foata normal form. 5/1174 useless extension candidates. Maximal degree in co-relation 4319. Up to 908 conditions per place. [2024-06-27 18:16:18,539 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 74 selfloop transitions, 18 changer transitions 0/108 dead transitions. [2024-06-27 18:16:18,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 108 transitions, 842 flow [2024-06-27 18:16:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 18:16:18,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:16:18,541 INFO L175 Difference]: Start difference. First operand has 84 places, 84 transitions, 567 flow. Second operand 7 states and 133 transitions. [2024-06-27 18:16:18,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 108 transitions, 842 flow [2024-06-27 18:16:18,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 108 transitions, 807 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:18,552 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 582 flow [2024-06-27 18:16:18,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-06-27 18:16:18,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-06-27 18:16:18,553 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 582 flow [2024-06-27 18:16:18,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:18,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:18,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:18,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:16:18,554 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:18,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:18,554 INFO L85 PathProgramCache]: Analyzing trace with hash -88332496, now seen corresponding path program 4 times [2024-06-27 18:16:18,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:18,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218850448] [2024-06-27 18:16:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:18,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:19,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:19,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218850448] [2024-06-27 18:16:19,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218850448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:19,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:19,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:19,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254829045] [2024-06-27 18:16:19,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:19,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:19,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:19,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:19,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:19,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 582 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:19,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:19,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:19,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:19,366 INFO L124 PetriNetUnfolderBase]: 645/1258 cut-off events. [2024-06-27 18:16:19,366 INFO L125 PetriNetUnfolderBase]: For 5666/5672 co-relation queries the response was YES. [2024-06-27 18:16:19,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 1258 events. 645/1258 cut-off events. For 5666/5672 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6911 event pairs, 157 based on Foata normal form. 5/1209 useless extension candidates. Maximal degree in co-relation 4612. Up to 934 conditions per place. [2024-06-27 18:16:19,371 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 70 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2024-06-27 18:16:19,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 108 transitions, 874 flow [2024-06-27 18:16:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:16:19,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-06-27 18:16:19,374 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 582 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:16:19,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 108 transitions, 874 flow [2024-06-27 18:16:19,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 108 transitions, 837 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:19,382 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 634 flow [2024-06-27 18:16:19,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-06-27 18:16:19,383 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-27 18:16:19,383 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 634 flow [2024-06-27 18:16:19,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:19,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:19,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:19,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:16:19,384 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:19,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2106950851, now seen corresponding path program 1 times [2024-06-27 18:16:19,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:19,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843354098] [2024-06-27 18:16:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:19,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:19,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:19,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843354098] [2024-06-27 18:16:19,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843354098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:19,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:19,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:19,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964619400] [2024-06-27 18:16:19,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:19,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:19,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:19,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:19,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:19,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:19,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 634 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:19,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:19,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:19,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:20,370 INFO L124 PetriNetUnfolderBase]: 667/1254 cut-off events. [2024-06-27 18:16:20,370 INFO L125 PetriNetUnfolderBase]: For 6830/6830 co-relation queries the response was YES. [2024-06-27 18:16:20,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4935 conditions, 1254 events. 667/1254 cut-off events. For 6830/6830 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6914 event pairs, 167 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 4896. Up to 1002 conditions per place. [2024-06-27 18:16:20,377 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 89 selfloop transitions, 25 changer transitions 0/122 dead transitions. [2024-06-27 18:16:20,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 122 transitions, 996 flow [2024-06-27 18:16:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:16:20,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-27 18:16:20,378 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 634 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:16:20,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 122 transitions, 996 flow [2024-06-27 18:16:20,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 122 transitions, 923 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:20,388 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 668 flow [2024-06-27 18:16:20,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=668, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2024-06-27 18:16:20,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2024-06-27 18:16:20,389 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 668 flow [2024-06-27 18:16:20,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:20,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:20,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:20,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:16:20,389 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:20,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1504000165, now seen corresponding path program 1 times [2024-06-27 18:16:20,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:20,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067990523] [2024-06-27 18:16:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:20,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:21,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:21,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067990523] [2024-06-27 18:16:21,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067990523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:21,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:21,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:21,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633724303] [2024-06-27 18:16:21,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:21,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:21,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:21,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:21,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:21,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 668 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:21,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:21,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:21,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:21,427 INFO L124 PetriNetUnfolderBase]: 678/1267 cut-off events. [2024-06-27 18:16:21,427 INFO L125 PetriNetUnfolderBase]: For 7631/7631 co-relation queries the response was YES. [2024-06-27 18:16:21,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5134 conditions, 1267 events. 678/1267 cut-off events. For 7631/7631 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6985 event pairs, 165 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 5093. Up to 1023 conditions per place. [2024-06-27 18:16:21,435 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 88 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-06-27 18:16:21,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 122 transitions, 1010 flow [2024-06-27 18:16:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:21,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:16:21,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:16:21,436 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 668 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:16:21,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 122 transitions, 1010 flow [2024-06-27 18:16:21,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 122 transitions, 949 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:21,446 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 685 flow [2024-06-27 18:16:21,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=685, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2024-06-27 18:16:21,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2024-06-27 18:16:21,447 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 685 flow [2024-06-27 18:16:21,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:21,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:21,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:21,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:16:21,448 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:21,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash 2050015495, now seen corresponding path program 2 times [2024-06-27 18:16:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528376129] [2024-06-27 18:16:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:21,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528376129] [2024-06-27 18:16:21,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528376129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:21,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:21,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:21,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390513772] [2024-06-27 18:16:21,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:21,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:22,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:22,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:22,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:22,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 685 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:22,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:22,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:22,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:22,485 INFO L124 PetriNetUnfolderBase]: 700/1316 cut-off events. [2024-06-27 18:16:22,486 INFO L125 PetriNetUnfolderBase]: For 8680/8680 co-relation queries the response was YES. [2024-06-27 18:16:22,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 1316 events. 700/1316 cut-off events. For 8680/8680 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7345 event pairs, 166 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 5357. Up to 1003 conditions per place. [2024-06-27 18:16:22,493 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 91 selfloop transitions, 28 changer transitions 0/127 dead transitions. [2024-06-27 18:16:22,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 127 transitions, 1055 flow [2024-06-27 18:16:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:16:22,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 18:16:22,494 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 685 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:16:22,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 127 transitions, 1055 flow [2024-06-27 18:16:22,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 127 transitions, 995 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:22,506 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 713 flow [2024-06-27 18:16:22,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2024-06-27 18:16:22,506 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-27 18:16:22,506 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 713 flow [2024-06-27 18:16:22,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:22,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:22,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:22,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:16:22,507 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:22,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2055608515, now seen corresponding path program 3 times [2024-06-27 18:16:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:22,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321632261] [2024-06-27 18:16:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:22,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:23,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:23,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321632261] [2024-06-27 18:16:23,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321632261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:23,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:23,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:23,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221576856] [2024-06-27 18:16:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:23,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:23,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:23,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 713 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:23,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:23,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:23,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:23,458 INFO L124 PetriNetUnfolderBase]: 722/1353 cut-off events. [2024-06-27 18:16:23,458 INFO L125 PetriNetUnfolderBase]: For 10122/10122 co-relation queries the response was YES. [2024-06-27 18:16:23,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 1353 events. 722/1353 cut-off events. For 10122/10122 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7580 event pairs, 168 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 5682. Up to 991 conditions per place. [2024-06-27 18:16:23,466 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 89 selfloop transitions, 30 changer transitions 0/127 dead transitions. [2024-06-27 18:16:23,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 127 transitions, 1081 flow [2024-06-27 18:16:23,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:23,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:23,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:16:23,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 18:16:23,467 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 713 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:16:23,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 127 transitions, 1081 flow [2024-06-27 18:16:23,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 127 transitions, 1011 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:23,480 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 738 flow [2024-06-27 18:16:23,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=738, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2024-06-27 18:16:23,481 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-06-27 18:16:23,481 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 738 flow [2024-06-27 18:16:23,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:23,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:23,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:23,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:16:23,481 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:23,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:23,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1008781143, now seen corresponding path program 2 times [2024-06-27 18:16:23,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:23,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208908554] [2024-06-27 18:16:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:23,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:24,159 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 18:16:24,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:24,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208908554] [2024-06-27 18:16:24,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208908554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:24,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:24,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:24,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069104429] [2024-06-27 18:16:24,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:24,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:24,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:24,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 738 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:24,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:24,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:24,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:24,566 INFO L124 PetriNetUnfolderBase]: 733/1379 cut-off events. [2024-06-27 18:16:24,567 INFO L125 PetriNetUnfolderBase]: For 10770/10770 co-relation queries the response was YES. [2024-06-27 18:16:24,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5885 conditions, 1379 events. 733/1379 cut-off events. For 10770/10770 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7790 event pairs, 170 based on Foata normal form. 1/1339 useless extension candidates. Maximal degree in co-relation 5841. Up to 1090 conditions per place. [2024-06-27 18:16:24,575 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 90 selfloop transitions, 28 changer transitions 0/126 dead transitions. [2024-06-27 18:16:24,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 126 transitions, 1086 flow [2024-06-27 18:16:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:16:24,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:16:24,577 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 738 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:16:24,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 126 transitions, 1086 flow [2024-06-27 18:16:24,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 126 transitions, 1007 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:24,593 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 744 flow [2024-06-27 18:16:24,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=744, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2024-06-27 18:16:24,593 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-06-27 18:16:24,593 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 744 flow [2024-06-27 18:16:24,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:24,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:24,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:24,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:16:24,594 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:24,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:24,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2055617443, now seen corresponding path program 1 times [2024-06-27 18:16:24,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:24,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562489361] [2024-06-27 18:16:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:24,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:25,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:25,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562489361] [2024-06-27 18:16:25,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562489361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:25,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:25,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:25,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022583343] [2024-06-27 18:16:25,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:25,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:25,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:25,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:25,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:25,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 744 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:25,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:25,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:25,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:25,697 INFO L124 PetriNetUnfolderBase]: 700/1341 cut-off events. [2024-06-27 18:16:25,697 INFO L125 PetriNetUnfolderBase]: For 10799/10807 co-relation queries the response was YES. [2024-06-27 18:16:25,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5605 conditions, 1341 events. 700/1341 cut-off events. For 10799/10807 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7717 event pairs, 167 based on Foata normal form. 7/1310 useless extension candidates. Maximal degree in co-relation 5560. Up to 1053 conditions per place. [2024-06-27 18:16:25,705 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 94 selfloop transitions, 17 changer transitions 0/130 dead transitions. [2024-06-27 18:16:25,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 130 transitions, 1084 flow [2024-06-27 18:16:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:16:25,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-27 18:16:25,706 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 744 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:16:25,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 130 transitions, 1084 flow [2024-06-27 18:16:25,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 130 transitions, 1015 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:25,720 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 732 flow [2024-06-27 18:16:25,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=732, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2024-06-27 18:16:25,721 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2024-06-27 18:16:25,721 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 732 flow [2024-06-27 18:16:25,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:25,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:25,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:25,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:16:25,722 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:25,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:25,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2055617133, now seen corresponding path program 3 times [2024-06-27 18:16:25,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:25,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568582451] [2024-06-27 18:16:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:26,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:26,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568582451] [2024-06-27 18:16:26,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568582451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:26,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:26,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:26,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795819348] [2024-06-27 18:16:26,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:26,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:26,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:26,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:26,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 732 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:26,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:26,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:26,769 INFO L124 PetriNetUnfolderBase]: 755/1415 cut-off events. [2024-06-27 18:16:26,769 INFO L125 PetriNetUnfolderBase]: For 11791/11791 co-relation queries the response was YES. [2024-06-27 18:16:26,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6090 conditions, 1415 events. 755/1415 cut-off events. For 11791/11791 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8018 event pairs, 168 based on Foata normal form. 1/1374 useless extension candidates. Maximal degree in co-relation 6044. Up to 1085 conditions per place. [2024-06-27 18:16:26,777 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 89 selfloop transitions, 33 changer transitions 0/130 dead transitions. [2024-06-27 18:16:26,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 130 transitions, 1092 flow [2024-06-27 18:16:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:16:26,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-06-27 18:16:26,778 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 732 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:16:26,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 130 transitions, 1092 flow [2024-06-27 18:16:26,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 130 transitions, 1051 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:26,792 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 790 flow [2024-06-27 18:16:26,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=790, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2024-06-27 18:16:26,793 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2024-06-27 18:16:26,793 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 790 flow [2024-06-27 18:16:26,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:26,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:26,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:26,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:16:26,794 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:26,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:26,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1566789089, now seen corresponding path program 2 times [2024-06-27 18:16:26,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:26,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850413553] [2024-06-27 18:16:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:26,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:27,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:27,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850413553] [2024-06-27 18:16:27,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850413553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:27,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:27,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:27,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141778366] [2024-06-27 18:16:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:27,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:27,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:27,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:27,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:27,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 790 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:27,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:27,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:27,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:27,914 INFO L124 PetriNetUnfolderBase]: 737/1451 cut-off events. [2024-06-27 18:16:27,915 INFO L125 PetriNetUnfolderBase]: For 12782/12795 co-relation queries the response was YES. [2024-06-27 18:16:27,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6162 conditions, 1451 events. 737/1451 cut-off events. For 12782/12795 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8410 event pairs, 153 based on Foata normal form. 10/1407 useless extension candidates. Maximal degree in co-relation 6115. Up to 1003 conditions per place. [2024-06-27 18:16:27,921 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 92 selfloop transitions, 29 changer transitions 0/141 dead transitions. [2024-06-27 18:16:27,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 141 transitions, 1294 flow [2024-06-27 18:16:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 18:16:27,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-27 18:16:27,923 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 790 flow. Second operand 8 states and 156 transitions. [2024-06-27 18:16:27,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 141 transitions, 1294 flow [2024-06-27 18:16:27,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 141 transitions, 1211 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:27,938 INFO L231 Difference]: Finished difference. Result has 110 places, 111 transitions, 847 flow [2024-06-27 18:16:27,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=847, PETRI_PLACES=110, PETRI_TRANSITIONS=111} [2024-06-27 18:16:27,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-27 18:16:27,938 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 111 transitions, 847 flow [2024-06-27 18:16:27,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:27,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:27,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:16:27,939 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:27,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1566788779, now seen corresponding path program 4 times [2024-06-27 18:16:27,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:27,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89943123] [2024-06-27 18:16:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:28,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:28,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89943123] [2024-06-27 18:16:28,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89943123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:28,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:28,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:28,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923611364] [2024-06-27 18:16:28,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:28,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:28,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:28,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:28,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:28,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 847 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:28,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:28,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:28,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:29,030 INFO L124 PetriNetUnfolderBase]: 796/1542 cut-off events. [2024-06-27 18:16:29,030 INFO L125 PetriNetUnfolderBase]: For 14647/14656 co-relation queries the response was YES. [2024-06-27 18:16:29,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6824 conditions, 1542 events. 796/1542 cut-off events. For 14647/14656 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8966 event pairs, 159 based on Foata normal form. 7/1484 useless extension candidates. Maximal degree in co-relation 6775. Up to 1056 conditions per place. [2024-06-27 18:16:29,039 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 90 selfloop transitions, 44 changer transitions 0/142 dead transitions. [2024-06-27 18:16:29,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 142 transitions, 1317 flow [2024-06-27 18:16:29,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:16:29,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-27 18:16:29,049 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 847 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:16:29,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 142 transitions, 1317 flow [2024-06-27 18:16:29,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 142 transitions, 1282 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:29,067 INFO L231 Difference]: Finished difference. Result has 115 places, 115 transitions, 965 flow [2024-06-27 18:16:29,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=965, PETRI_PLACES=115, PETRI_TRANSITIONS=115} [2024-06-27 18:16:29,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-27 18:16:29,067 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 115 transitions, 965 flow [2024-06-27 18:16:29,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:29,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:29,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:29,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:16:29,068 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:29,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1210763875, now seen corresponding path program 4 times [2024-06-27 18:16:29,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:29,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052360207] [2024-06-27 18:16:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:29,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:29,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:29,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052360207] [2024-06-27 18:16:29,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052360207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:29,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:29,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321773573] [2024-06-27 18:16:29,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:29,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:29,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:29,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 115 transitions, 965 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:29,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:29,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:29,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:29,975 INFO L124 PetriNetUnfolderBase]: 808/1552 cut-off events. [2024-06-27 18:16:29,975 INFO L125 PetriNetUnfolderBase]: For 16418/16418 co-relation queries the response was YES. [2024-06-27 18:16:29,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7189 conditions, 1552 events. 808/1552 cut-off events. For 16418/16418 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8989 event pairs, 169 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 7138. Up to 1072 conditions per place. [2024-06-27 18:16:29,984 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 102 selfloop transitions, 35 changer transitions 0/145 dead transitions. [2024-06-27 18:16:29,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 145 transitions, 1375 flow [2024-06-27 18:16:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:16:29,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 18:16:29,998 INFO L175 Difference]: Start difference. First operand has 115 places, 115 transitions, 965 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:16:29,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 145 transitions, 1375 flow [2024-06-27 18:16:30,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 145 transitions, 1313 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:30,027 INFO L231 Difference]: Finished difference. Result has 119 places, 117 transitions, 1012 flow [2024-06-27 18:16:30,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1012, PETRI_PLACES=119, PETRI_TRANSITIONS=117} [2024-06-27 18:16:30,027 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-06-27 18:16:30,027 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 117 transitions, 1012 flow [2024-06-27 18:16:30,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:30,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:30,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:30,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:16:30,028 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:30,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1556669449, now seen corresponding path program 5 times [2024-06-27 18:16:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:30,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422956177] [2024-06-27 18:16:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:30,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:30,772 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 18:16:30,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:30,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422956177] [2024-06-27 18:16:30,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422956177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:30,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:30,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:30,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958346731] [2024-06-27 18:16:30,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:30,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:30,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:30,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:30,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:30,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:30,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 117 transitions, 1012 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:30,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:30,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:30,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:31,191 INFO L124 PetriNetUnfolderBase]: 819/1581 cut-off events. [2024-06-27 18:16:31,191 INFO L125 PetriNetUnfolderBase]: For 17317/17326 co-relation queries the response was YES. [2024-06-27 18:16:31,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 1581 events. 819/1581 cut-off events. For 17317/17326 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9238 event pairs, 162 based on Foata normal form. 7/1521 useless extension candidates. Maximal degree in co-relation 7469. Up to 1170 conditions per place. [2024-06-27 18:16:31,199 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 103 selfloop transitions, 35 changer transitions 0/146 dead transitions. [2024-06-27 18:16:31,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 146 transitions, 1470 flow [2024-06-27 18:16:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:16:31,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-27 18:16:31,200 INFO L175 Difference]: Start difference. First operand has 119 places, 117 transitions, 1012 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:16:31,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 146 transitions, 1470 flow [2024-06-27 18:16:31,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 146 transitions, 1377 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:31,222 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 1026 flow [2024-06-27 18:16:31,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1026, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2024-06-27 18:16:31,223 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-06-27 18:16:31,223 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 1026 flow [2024-06-27 18:16:31,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:31,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:31,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:31,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:16:31,224 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:31,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1556669759, now seen corresponding path program 3 times [2024-06-27 18:16:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:31,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525629713] [2024-06-27 18:16:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:31,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:32,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:32,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525629713] [2024-06-27 18:16:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525629713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:32,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:32,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:32,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799287861] [2024-06-27 18:16:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:32,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:32,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:32,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:32,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 1026 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:32,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:32,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:32,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:32,431 INFO L124 PetriNetUnfolderBase]: 769/1536 cut-off events. [2024-06-27 18:16:32,431 INFO L125 PetriNetUnfolderBase]: For 16402/16416 co-relation queries the response was YES. [2024-06-27 18:16:32,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6965 conditions, 1536 events. 769/1536 cut-off events. For 16402/16416 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9212 event pairs, 162 based on Foata normal form. 11/1482 useless extension candidates. Maximal degree in co-relation 6911. Up to 1122 conditions per place. [2024-06-27 18:16:32,440 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 105 selfloop transitions, 20 changer transitions 0/148 dead transitions. [2024-06-27 18:16:32,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 148 transitions, 1393 flow [2024-06-27 18:16:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:16:32,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-27 18:16:32,441 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 1026 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:16:32,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 148 transitions, 1393 flow [2024-06-27 18:16:32,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 148 transitions, 1281 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:32,465 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 968 flow [2024-06-27 18:16:32,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=968, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2024-06-27 18:16:32,466 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 81 predicate places. [2024-06-27 18:16:32,466 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 968 flow [2024-06-27 18:16:32,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:32,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:32,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:32,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:16:32,467 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:32,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:32,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1146246891, now seen corresponding path program 4 times [2024-06-27 18:16:32,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:32,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317475688] [2024-06-27 18:16:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:32,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:33,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317475688] [2024-06-27 18:16:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317475688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:33,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:33,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072268420] [2024-06-27 18:16:33,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:33,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:33,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:33,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:33,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:33,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 968 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:33,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:33,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:33,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:33,618 INFO L124 PetriNetUnfolderBase]: 775/1556 cut-off events. [2024-06-27 18:16:33,618 INFO L125 PetriNetUnfolderBase]: For 16998/17007 co-relation queries the response was YES. [2024-06-27 18:16:33,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 1556 events. 775/1556 cut-off events. For 16998/17007 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9395 event pairs, 173 based on Foata normal form. 9/1501 useless extension candidates. Maximal degree in co-relation 6835. Up to 1138 conditions per place. [2024-06-27 18:16:33,627 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 110 selfloop transitions, 15 changer transitions 0/148 dead transitions. [2024-06-27 18:16:33,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 148 transitions, 1336 flow [2024-06-27 18:16:33,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:16:33,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-27 18:16:33,628 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 968 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:16:33,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 148 transitions, 1336 flow [2024-06-27 18:16:33,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 148 transitions, 1279 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:33,650 INFO L231 Difference]: Finished difference. Result has 125 places, 122 transitions, 972 flow [2024-06-27 18:16:33,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=972, PETRI_PLACES=125, PETRI_TRANSITIONS=122} [2024-06-27 18:16:33,650 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2024-06-27 18:16:33,650 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 122 transitions, 972 flow [2024-06-27 18:16:33,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:33,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:33,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:33,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:16:33,651 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:33,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:33,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1156731091, now seen corresponding path program 6 times [2024-06-27 18:16:33,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:33,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186600509] [2024-06-27 18:16:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:34,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186600509] [2024-06-27 18:16:34,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186600509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:34,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:34,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:34,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200384187] [2024-06-27 18:16:34,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:34,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:34,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:34,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 122 transitions, 972 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:34,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:34,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:34,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:34,711 INFO L124 PetriNetUnfolderBase]: 824/1598 cut-off events. [2024-06-27 18:16:34,711 INFO L125 PetriNetUnfolderBase]: For 17812/17821 co-relation queries the response was YES. [2024-06-27 18:16:34,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7313 conditions, 1598 events. 824/1598 cut-off events. For 17812/17821 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9412 event pairs, 165 based on Foata normal form. 7/1535 useless extension candidates. Maximal degree in co-relation 7257. Up to 1201 conditions per place. [2024-06-27 18:16:34,719 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 108 selfloop transitions, 32 changer transitions 0/148 dead transitions. [2024-06-27 18:16:34,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 148 transitions, 1350 flow [2024-06-27 18:16:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:16:34,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:16:34,721 INFO L175 Difference]: Start difference. First operand has 125 places, 122 transitions, 972 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:16:34,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 148 transitions, 1350 flow [2024-06-27 18:16:34,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 148 transitions, 1265 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:34,748 INFO L231 Difference]: Finished difference. Result has 126 places, 122 transitions, 956 flow [2024-06-27 18:16:34,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=956, PETRI_PLACES=126, PETRI_TRANSITIONS=122} [2024-06-27 18:16:34,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-27 18:16:34,749 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 122 transitions, 956 flow [2024-06-27 18:16:34,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:34,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:34,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:34,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:16:34,749 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:34,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:34,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1146233995, now seen corresponding path program 1 times [2024-06-27 18:16:34,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:34,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995702692] [2024-06-27 18:16:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:35,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:35,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995702692] [2024-06-27 18:16:35,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995702692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:35,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:35,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:35,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422130633] [2024-06-27 18:16:35,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:35,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:35,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:35,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:35,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:35,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:16:35,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 122 transitions, 956 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:35,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:35,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:16:35,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:35,873 INFO L124 PetriNetUnfolderBase]: 773/1537 cut-off events. [2024-06-27 18:16:35,873 INFO L125 PetriNetUnfolderBase]: For 17327/17336 co-relation queries the response was YES. [2024-06-27 18:16:35,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6760 conditions, 1537 events. 773/1537 cut-off events. For 17327/17336 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9296 event pairs, 174 based on Foata normal form. 9/1486 useless extension candidates. Maximal degree in co-relation 6704. Up to 1145 conditions per place. [2024-06-27 18:16:35,881 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 114 selfloop transitions, 13 changer transitions 0/150 dead transitions. [2024-06-27 18:16:35,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 150 transitions, 1318 flow [2024-06-27 18:16:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:35,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 18:16:35,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-27 18:16:35,882 INFO L175 Difference]: Start difference. First operand has 126 places, 122 transitions, 956 flow. Second operand 8 states and 150 transitions. [2024-06-27 18:16:35,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 150 transitions, 1318 flow [2024-06-27 18:16:35,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 150 transitions, 1249 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:35,907 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 927 flow [2024-06-27 18:16:35,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=927, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2024-06-27 18:16:35,908 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-27 18:16:35,908 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 927 flow [2024-06-27 18:16:35,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:35,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:35,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:35,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:16:35,908 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:35,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash -878704193, now seen corresponding path program 1 times [2024-06-27 18:16:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:35,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520331377] [2024-06-27 18:16:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:35,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:36,731 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 18:16:36,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:36,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520331377] [2024-06-27 18:16:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520331377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:36,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:36,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:36,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192678175] [2024-06-27 18:16:36,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:36,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:36,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:36,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:36,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:36,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:36,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 927 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:36,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:36,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:36,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:37,418 INFO L124 PetriNetUnfolderBase]: 878/1655 cut-off events. [2024-06-27 18:16:37,418 INFO L125 PetriNetUnfolderBase]: For 18949/18949 co-relation queries the response was YES. [2024-06-27 18:16:37,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 1655 events. 878/1655 cut-off events. For 18949/18949 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9835 event pairs, 192 based on Foata normal form. 1/1603 useless extension candidates. Maximal degree in co-relation 7522. Up to 1270 conditions per place. [2024-06-27 18:16:37,427 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 135 selfloop transitions, 40 changer transitions 0/183 dead transitions. [2024-06-27 18:16:37,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 183 transitions, 1647 flow [2024-06-27 18:16:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:16:37,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 18:16:37,428 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 927 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:16:37,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 183 transitions, 1647 flow [2024-06-27 18:16:37,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 183 transitions, 1615 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:37,458 INFO L231 Difference]: Finished difference. Result has 136 places, 146 transitions, 1278 flow [2024-06-27 18:16:37,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1278, PETRI_PLACES=136, PETRI_TRANSITIONS=146} [2024-06-27 18:16:37,458 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-27 18:16:37,459 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 146 transitions, 1278 flow [2024-06-27 18:16:37,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:37,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:37,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:37,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:16:37,459 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:37,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash -281882283, now seen corresponding path program 2 times [2024-06-27 18:16:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:37,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336962745] [2024-06-27 18:16:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:37,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:38,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336962745] [2024-06-27 18:16:38,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336962745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:38,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:38,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256117170] [2024-06-27 18:16:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:38,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:38,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:38,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:38,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:38,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:38,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 146 transitions, 1278 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:38,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:38,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:38,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:38,645 INFO L124 PetriNetUnfolderBase]: 915/1752 cut-off events. [2024-06-27 18:16:38,645 INFO L125 PetriNetUnfolderBase]: For 21523/21523 co-relation queries the response was YES. [2024-06-27 18:16:38,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8294 conditions, 1752 events. 915/1752 cut-off events. For 21523/21523 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10756 event pairs, 280 based on Foata normal form. 1/1695 useless extension candidates. Maximal degree in co-relation 8231. Up to 1312 conditions per place. [2024-06-27 18:16:38,655 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 136 selfloop transitions, 56 changer transitions 0/200 dead transitions. [2024-06-27 18:16:38,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 200 transitions, 1937 flow [2024-06-27 18:16:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:16:38,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:16:38,656 INFO L175 Difference]: Start difference. First operand has 136 places, 146 transitions, 1278 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:16:38,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 200 transitions, 1937 flow [2024-06-27 18:16:38,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 200 transitions, 1845 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:38,696 INFO L231 Difference]: Finished difference. Result has 145 places, 156 transitions, 1450 flow [2024-06-27 18:16:38,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1450, PETRI_PLACES=145, PETRI_TRANSITIONS=156} [2024-06-27 18:16:38,696 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-27 18:16:38,696 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 156 transitions, 1450 flow [2024-06-27 18:16:38,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:38,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:38,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:38,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:16:38,697 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:38,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:38,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1894061973, now seen corresponding path program 3 times [2024-06-27 18:16:38,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:38,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104089825] [2024-06-27 18:16:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:38,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:39,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:39,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104089825] [2024-06-27 18:16:39,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104089825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:39,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:39,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815939837] [2024-06-27 18:16:39,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:39,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:39,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:39,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 156 transitions, 1450 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:39,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:39,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:39,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:39,924 INFO L124 PetriNetUnfolderBase]: 985/1900 cut-off events. [2024-06-27 18:16:39,924 INFO L125 PetriNetUnfolderBase]: For 24468/24468 co-relation queries the response was YES. [2024-06-27 18:16:39,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9212 conditions, 1900 events. 985/1900 cut-off events. For 24468/24468 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11938 event pairs, 280 based on Foata normal form. 1/1836 useless extension candidates. Maximal degree in co-relation 9146. Up to 1383 conditions per place. [2024-06-27 18:16:39,935 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 144 selfloop transitions, 70 changer transitions 0/222 dead transitions. [2024-06-27 18:16:39,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 222 transitions, 2320 flow [2024-06-27 18:16:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:16:39,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:16:39,936 INFO L175 Difference]: Start difference. First operand has 145 places, 156 transitions, 1450 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:16:39,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 222 transitions, 2320 flow [2024-06-27 18:16:39,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 222 transitions, 2123 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:39,976 INFO L231 Difference]: Finished difference. Result has 150 places, 179 transitions, 1745 flow [2024-06-27 18:16:39,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1745, PETRI_PLACES=150, PETRI_TRANSITIONS=179} [2024-06-27 18:16:39,977 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-27 18:16:39,977 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 179 transitions, 1745 flow [2024-06-27 18:16:39,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:39,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:39,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:39,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:16:39,977 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:39,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1894204480, now seen corresponding path program 1 times [2024-06-27 18:16:39,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:39,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198269167] [2024-06-27 18:16:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:40,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:40,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:40,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198269167] [2024-06-27 18:16:40,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198269167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:40,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:40,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099224110] [2024-06-27 18:16:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:40,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:40,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:40,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:40,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 179 transitions, 1745 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:40,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:40,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:40,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:41,080 INFO L124 PetriNetUnfolderBase]: 1029/1956 cut-off events. [2024-06-27 18:16:41,080 INFO L125 PetriNetUnfolderBase]: For 26971/26971 co-relation queries the response was YES. [2024-06-27 18:16:41,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 1956 events. 1029/1956 cut-off events. For 26971/26971 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12215 event pairs, 309 based on Foata normal form. 2/1898 useless extension candidates. Maximal degree in co-relation 9632. Up to 1526 conditions per place. [2024-06-27 18:16:41,092 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 167 selfloop transitions, 46 changer transitions 0/221 dead transitions. [2024-06-27 18:16:41,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 221 transitions, 2367 flow [2024-06-27 18:16:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:16:41,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 18:16:41,093 INFO L175 Difference]: Start difference. First operand has 150 places, 179 transitions, 1745 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:16:41,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 221 transitions, 2367 flow [2024-06-27 18:16:41,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 221 transitions, 2249 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:41,139 INFO L231 Difference]: Finished difference. Result has 156 places, 185 transitions, 1787 flow [2024-06-27 18:16:41,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=156, PETRI_TRANSITIONS=185} [2024-06-27 18:16:41,140 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-27 18:16:41,140 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 185 transitions, 1787 flow [2024-06-27 18:16:41,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:41,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:41,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:41,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:16:41,141 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:41,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:41,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1906357393, now seen corresponding path program 4 times [2024-06-27 18:16:41,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:41,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257776587] [2024-06-27 18:16:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:41,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:41,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:41,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257776587] [2024-06-27 18:16:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257776587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:41,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:41,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:41,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982963936] [2024-06-27 18:16:41,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:41,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:41,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:41,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:41,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:41,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:41,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 185 transitions, 1787 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:41,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:41,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:41,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:42,285 INFO L124 PetriNetUnfolderBase]: 1091/2082 cut-off events. [2024-06-27 18:16:42,285 INFO L125 PetriNetUnfolderBase]: For 28247/28247 co-relation queries the response was YES. [2024-06-27 18:16:42,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10454 conditions, 2082 events. 1091/2082 cut-off events. For 28247/28247 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13202 event pairs, 306 based on Foata normal form. 1/2019 useless extension candidates. Maximal degree in co-relation 10383. Up to 1583 conditions per place. [2024-06-27 18:16:42,298 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 171 selfloop transitions, 83 changer transitions 0/262 dead transitions. [2024-06-27 18:16:42,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 262 transitions, 2927 flow [2024-06-27 18:16:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:16:42,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-06-27 18:16:42,299 INFO L175 Difference]: Start difference. First operand has 156 places, 185 transitions, 1787 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:16:42,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 262 transitions, 2927 flow [2024-06-27 18:16:42,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 262 transitions, 2782 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:42,358 INFO L231 Difference]: Finished difference. Result has 162 places, 235 transitions, 2494 flow [2024-06-27 18:16:42,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2494, PETRI_PLACES=162, PETRI_TRANSITIONS=235} [2024-06-27 18:16:42,359 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-06-27 18:16:42,359 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 235 transitions, 2494 flow [2024-06-27 18:16:42,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:42,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:42,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:42,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:16:42,359 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:42,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1901536986, now seen corresponding path program 2 times [2024-06-27 18:16:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:42,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007688377] [2024-06-27 18:16:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:42,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007688377] [2024-06-27 18:16:42,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007688377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:42,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:42,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:42,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669214040] [2024-06-27 18:16:42,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:42,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:42,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:43,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:43,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 235 transitions, 2494 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:43,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:43,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:43,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:43,561 INFO L124 PetriNetUnfolderBase]: 1163/2220 cut-off events. [2024-06-27 18:16:43,561 INFO L125 PetriNetUnfolderBase]: For 32509/32509 co-relation queries the response was YES. [2024-06-27 18:16:43,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11440 conditions, 2220 events. 1163/2220 cut-off events. For 32509/32509 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14238 event pairs, 319 based on Foata normal form. 2/2152 useless extension candidates. Maximal degree in co-relation 11366. Up to 1697 conditions per place. [2024-06-27 18:16:43,574 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 208 selfloop transitions, 61 changer transitions 0/277 dead transitions. [2024-06-27 18:16:43,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 277 transitions, 3252 flow [2024-06-27 18:16:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:16:43,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 18:16:43,575 INFO L175 Difference]: Start difference. First operand has 162 places, 235 transitions, 2494 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:16:43,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 277 transitions, 3252 flow [2024-06-27 18:16:43,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 277 transitions, 3180 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:43,641 INFO L231 Difference]: Finished difference. Result has 171 places, 245 transitions, 2663 flow [2024-06-27 18:16:43,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2663, PETRI_PLACES=171, PETRI_TRANSITIONS=245} [2024-06-27 18:16:43,641 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-27 18:16:43,641 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 245 transitions, 2663 flow [2024-06-27 18:16:43,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:43,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:43,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:43,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:16:43,642 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:43,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:43,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1757667846, now seen corresponding path program 3 times [2024-06-27 18:16:43,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:43,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191487877] [2024-06-27 18:16:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:44,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:44,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191487877] [2024-06-27 18:16:44,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191487877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:44,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:44,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:44,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791096287] [2024-06-27 18:16:44,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:44,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:44,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:44,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:44,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:44,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:44,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 245 transitions, 2663 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:44,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:44,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:44,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:44,879 INFO L124 PetriNetUnfolderBase]: 1251/2372 cut-off events. [2024-06-27 18:16:44,880 INFO L125 PetriNetUnfolderBase]: For 35943/35943 co-relation queries the response was YES. [2024-06-27 18:16:44,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12683 conditions, 2372 events. 1251/2372 cut-off events. For 35943/35943 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15417 event pairs, 288 based on Foata normal form. 1/2299 useless extension candidates. Maximal degree in co-relation 12605. Up to 1697 conditions per place. [2024-06-27 18:16:44,897 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 212 selfloop transitions, 74 changer transitions 0/294 dead transitions. [2024-06-27 18:16:44,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 294 transitions, 3603 flow [2024-06-27 18:16:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:16:44,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 18:16:44,899 INFO L175 Difference]: Start difference. First operand has 171 places, 245 transitions, 2663 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:16:44,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 294 transitions, 3603 flow [2024-06-27 18:16:44,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 294 transitions, 3482 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:44,980 INFO L231 Difference]: Finished difference. Result has 177 places, 256 transitions, 2864 flow [2024-06-27 18:16:44,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2542, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2864, PETRI_PLACES=177, PETRI_TRANSITIONS=256} [2024-06-27 18:16:44,981 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-06-27 18:16:44,981 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 256 transitions, 2864 flow [2024-06-27 18:16:44,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:44,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:44,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:44,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:16:44,982 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:44,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1313577097, now seen corresponding path program 1 times [2024-06-27 18:16:44,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:44,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114845689] [2024-06-27 18:16:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:44,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:45,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:45,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114845689] [2024-06-27 18:16:45,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114845689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:45,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:45,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:45,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565189142] [2024-06-27 18:16:45,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:45,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:45,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:45,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:45,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 256 transitions, 2864 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:45,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:45,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:45,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:46,156 INFO L124 PetriNetUnfolderBase]: 1273/2430 cut-off events. [2024-06-27 18:16:46,156 INFO L125 PetriNetUnfolderBase]: For 39859/39859 co-relation queries the response was YES. [2024-06-27 18:16:46,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13414 conditions, 2430 events. 1273/2430 cut-off events. For 39859/39859 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15928 event pairs, 339 based on Foata normal form. 2/2354 useless extension candidates. Maximal degree in co-relation 13334. Up to 1928 conditions per place. [2024-06-27 18:16:46,172 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 244 selfloop transitions, 43 changer transitions 0/295 dead transitions. [2024-06-27 18:16:46,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 295 transitions, 3643 flow [2024-06-27 18:16:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:16:46,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 18:16:46,173 INFO L175 Difference]: Start difference. First operand has 177 places, 256 transitions, 2864 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:16:46,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 295 transitions, 3643 flow [2024-06-27 18:16:46,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 295 transitions, 3557 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:46,257 INFO L231 Difference]: Finished difference. Result has 183 places, 260 transitions, 2927 flow [2024-06-27 18:16:46,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2778, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2927, PETRI_PLACES=183, PETRI_TRANSITIONS=260} [2024-06-27 18:16:46,258 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2024-06-27 18:16:46,258 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 260 transitions, 2927 flow [2024-06-27 18:16:46,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:46,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:46,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:46,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:16:46,258 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:46,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:46,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1756752726, now seen corresponding path program 4 times [2024-06-27 18:16:46,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:46,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135189779] [2024-06-27 18:16:46,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:46,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135189779] [2024-06-27 18:16:46,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135189779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:46,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:46,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850576112] [2024-06-27 18:16:46,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:46,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:46,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:46,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:46,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:46,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 260 transitions, 2927 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:46,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:46,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:46,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:47,445 INFO L124 PetriNetUnfolderBase]: 1269/2425 cut-off events. [2024-06-27 18:16:47,445 INFO L125 PetriNetUnfolderBase]: For 39419/39419 co-relation queries the response was YES. [2024-06-27 18:16:47,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13478 conditions, 2425 events. 1269/2425 cut-off events. For 39419/39419 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15917 event pairs, 300 based on Foata normal form. 2/2348 useless extension candidates. Maximal degree in co-relation 13395. Up to 1811 conditions per place. [2024-06-27 18:16:47,462 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 225 selfloop transitions, 63 changer transitions 0/296 dead transitions. [2024-06-27 18:16:47,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 296 transitions, 3683 flow [2024-06-27 18:16:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:47,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:16:47,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 18:16:47,463 INFO L175 Difference]: Start difference. First operand has 183 places, 260 transitions, 2927 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:16:47,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 296 transitions, 3683 flow [2024-06-27 18:16:47,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 296 transitions, 3569 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:47,542 INFO L231 Difference]: Finished difference. Result has 188 places, 260 transitions, 2945 flow [2024-06-27 18:16:47,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2813, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2945, PETRI_PLACES=188, PETRI_TRANSITIONS=260} [2024-06-27 18:16:47,542 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 146 predicate places. [2024-06-27 18:16:47,543 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 260 transitions, 2945 flow [2024-06-27 18:16:47,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:47,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:47,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:47,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:16:47,543 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:47,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:47,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1801356609, now seen corresponding path program 5 times [2024-06-27 18:16:47,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:47,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128757847] [2024-06-27 18:16:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128757847] [2024-06-27 18:16:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128757847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:48,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891371467] [2024-06-27 18:16:48,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:48,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:48,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:48,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:48,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:48,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:48,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 260 transitions, 2945 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:48,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:48,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:48,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:48,742 INFO L124 PetriNetUnfolderBase]: 1311/2490 cut-off events. [2024-06-27 18:16:48,742 INFO L125 PetriNetUnfolderBase]: For 39256/39256 co-relation queries the response was YES. [2024-06-27 18:16:48,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13828 conditions, 2490 events. 1311/2490 cut-off events. For 39256/39256 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16275 event pairs, 292 based on Foata normal form. 1/2412 useless extension candidates. Maximal degree in co-relation 13744. Up to 1906 conditions per place. [2024-06-27 18:16:48,760 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 209 selfloop transitions, 103 changer transitions 0/320 dead transitions. [2024-06-27 18:16:48,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 320 transitions, 4120 flow [2024-06-27 18:16:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:48,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 18:16:48,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-06-27 18:16:48,761 INFO L175 Difference]: Start difference. First operand has 188 places, 260 transitions, 2945 flow. Second operand 9 states and 173 transitions. [2024-06-27 18:16:48,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 320 transitions, 4120 flow [2024-06-27 18:16:48,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 320 transitions, 3924 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:48,846 INFO L231 Difference]: Finished difference. Result has 190 places, 295 transitions, 3509 flow [2024-06-27 18:16:48,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3509, PETRI_PLACES=190, PETRI_TRANSITIONS=295} [2024-06-27 18:16:48,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 148 predicate places. [2024-06-27 18:16:48,846 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 295 transitions, 3509 flow [2024-06-27 18:16:48,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:48,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:48,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:48,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:16:48,851 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:48,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1801362406, now seen corresponding path program 5 times [2024-06-27 18:16:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:48,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751616727] [2024-06-27 18:16:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:48,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:49,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:49,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751616727] [2024-06-27 18:16:49,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751616727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:49,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:49,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323911546] [2024-06-27 18:16:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:49,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:49,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:49,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:49,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:49,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:49,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 295 transitions, 3509 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:49,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:49,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:49,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:50,064 INFO L124 PetriNetUnfolderBase]: 1411/2670 cut-off events. [2024-06-27 18:16:50,064 INFO L125 PetriNetUnfolderBase]: For 43477/43477 co-relation queries the response was YES. [2024-06-27 18:16:50,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15051 conditions, 2670 events. 1411/2670 cut-off events. For 43477/43477 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17782 event pairs, 299 based on Foata normal form. 2/2587 useless extension candidates. Maximal degree in co-relation 14965. Up to 2051 conditions per place. [2024-06-27 18:16:50,085 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 257 selfloop transitions, 75 changer transitions 0/340 dead transitions. [2024-06-27 18:16:50,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 340 transitions, 4477 flow [2024-06-27 18:16:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:16:50,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 18:16:50,089 INFO L175 Difference]: Start difference. First operand has 190 places, 295 transitions, 3509 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:16:50,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 340 transitions, 4477 flow [2024-06-27 18:16:50,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 340 transitions, 4331 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:50,184 INFO L231 Difference]: Finished difference. Result has 198 places, 310 transitions, 3735 flow [2024-06-27 18:16:50,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3363, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3735, PETRI_PLACES=198, PETRI_TRANSITIONS=310} [2024-06-27 18:16:50,185 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-06-27 18:16:50,185 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 310 transitions, 3735 flow [2024-06-27 18:16:50,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:50,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:50,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:50,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:16:50,186 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:50,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:50,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1363141166, now seen corresponding path program 6 times [2024-06-27 18:16:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:50,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318294167] [2024-06-27 18:16:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:50,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:50,869 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 18:16:50,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:50,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318294167] [2024-06-27 18:16:50,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318294167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:50,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:50,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:50,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961785688] [2024-06-27 18:16:50,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:50,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:50,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:50,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:50,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:50,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 310 transitions, 3735 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:50,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:50,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:50,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:51,605 INFO L124 PetriNetUnfolderBase]: 1523/2854 cut-off events. [2024-06-27 18:16:51,605 INFO L125 PetriNetUnfolderBase]: For 49059/49059 co-relation queries the response was YES. [2024-06-27 18:16:51,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16570 conditions, 2854 events. 1523/2854 cut-off events. For 49059/49059 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19173 event pairs, 306 based on Foata normal form. 1/2769 useless extension candidates. Maximal degree in co-relation 16481. Up to 2099 conditions per place. [2024-06-27 18:16:51,630 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 261 selfloop transitions, 92 changer transitions 0/361 dead transitions. [2024-06-27 18:16:51,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 361 transitions, 4876 flow [2024-06-27 18:16:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:16:51,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-27 18:16:51,631 INFO L175 Difference]: Start difference. First operand has 198 places, 310 transitions, 3735 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:16:51,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 361 transitions, 4876 flow [2024-06-27 18:16:51,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 361 transitions, 4735 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:51,755 INFO L231 Difference]: Finished difference. Result has 204 places, 328 transitions, 4056 flow [2024-06-27 18:16:51,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3594, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4056, PETRI_PLACES=204, PETRI_TRANSITIONS=328} [2024-06-27 18:16:51,756 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-27 18:16:51,756 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 328 transitions, 4056 flow [2024-06-27 18:16:51,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:51,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:51,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:51,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:16:51,757 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:51,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1363141445, now seen corresponding path program 2 times [2024-06-27 18:16:51,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:51,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592395991] [2024-06-27 18:16:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:51,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:52,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:52,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592395991] [2024-06-27 18:16:52,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592395991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:52,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699179814] [2024-06-27 18:16:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:52,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:52,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:52,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:52,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:52,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:52,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 328 transitions, 4056 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:52,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:52,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:52,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:53,047 INFO L124 PetriNetUnfolderBase]: 1541/2933 cut-off events. [2024-06-27 18:16:53,047 INFO L125 PetriNetUnfolderBase]: For 53959/53959 co-relation queries the response was YES. [2024-06-27 18:16:53,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17393 conditions, 2933 events. 1541/2933 cut-off events. For 53959/53959 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20060 event pairs, 414 based on Foata normal form. 1/2838 useless extension candidates. Maximal degree in co-relation 17302. Up to 2344 conditions per place. [2024-06-27 18:16:53,070 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 308 selfloop transitions, 45 changer transitions 0/361 dead transitions. [2024-06-27 18:16:53,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 361 transitions, 4924 flow [2024-06-27 18:16:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 18:16:53,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 18:16:53,072 INFO L175 Difference]: Start difference. First operand has 204 places, 328 transitions, 4056 flow. Second operand 10 states and 180 transitions. [2024-06-27 18:16:53,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 361 transitions, 4924 flow [2024-06-27 18:16:53,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 361 transitions, 4824 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:53,195 INFO L231 Difference]: Finished difference. Result has 209 places, 331 transitions, 4089 flow [2024-06-27 18:16:53,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3956, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4089, PETRI_PLACES=209, PETRI_TRANSITIONS=331} [2024-06-27 18:16:53,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-27 18:16:53,196 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 331 transitions, 4089 flow [2024-06-27 18:16:53,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:53,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:53,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:53,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:16:53,196 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:53,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1363133726, now seen corresponding path program 7 times [2024-06-27 18:16:53,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:53,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371314150] [2024-06-27 18:16:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:53,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:53,863 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 18:16:53,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:53,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371314150] [2024-06-27 18:16:53,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371314150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:53,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:53,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:53,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939295821] [2024-06-27 18:16:53,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:53,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:53,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:53,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:53,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:53,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 331 transitions, 4089 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:53,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:53,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:53,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:54,630 INFO L124 PetriNetUnfolderBase]: 1537/2916 cut-off events. [2024-06-27 18:16:54,630 INFO L125 PetriNetUnfolderBase]: For 53195/53195 co-relation queries the response was YES. [2024-06-27 18:16:54,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17399 conditions, 2916 events. 1537/2916 cut-off events. For 53195/53195 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19849 event pairs, 312 based on Foata normal form. 2/2823 useless extension candidates. Maximal degree in co-relation 17306. Up to 2209 conditions per place. [2024-06-27 18:16:54,654 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 279 selfloop transitions, 77 changer transitions 0/364 dead transitions. [2024-06-27 18:16:54,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 364 transitions, 4983 flow [2024-06-27 18:16:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:16:54,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 18:16:54,655 INFO L175 Difference]: Start difference. First operand has 209 places, 331 transitions, 4089 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:16:54,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 364 transitions, 4983 flow [2024-06-27 18:16:54,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 364 transitions, 4858 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:54,795 INFO L231 Difference]: Finished difference. Result has 212 places, 331 transitions, 4128 flow [2024-06-27 18:16:54,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3964, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4128, PETRI_PLACES=212, PETRI_TRANSITIONS=331} [2024-06-27 18:16:54,796 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2024-06-27 18:16:54,796 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 331 transitions, 4128 flow [2024-06-27 18:16:54,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:54,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:54,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:54,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:16:54,796 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:54,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1536517346, now seen corresponding path program 8 times [2024-06-27 18:16:54,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:54,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407106448] [2024-06-27 18:16:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:54,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:55,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407106448] [2024-06-27 18:16:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407106448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:55,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:55,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:55,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980715126] [2024-06-27 18:16:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:55,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:55,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:55,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:55,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 331 transitions, 4128 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:55,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:55,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:55,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:56,086 INFO L124 PetriNetUnfolderBase]: 1603/3064 cut-off events. [2024-06-27 18:16:56,087 INFO L125 PetriNetUnfolderBase]: For 56440/56440 co-relation queries the response was YES. [2024-06-27 18:16:56,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18166 conditions, 3064 events. 1603/3064 cut-off events. For 56440/56440 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 21141 event pairs, 283 based on Foata normal form. 2/2959 useless extension candidates. Maximal degree in co-relation 18072. Up to 2192 conditions per place. [2024-06-27 18:16:56,112 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 282 selfloop transitions, 85 changer transitions 0/375 dead transitions. [2024-06-27 18:16:56,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 375 transitions, 5177 flow [2024-06-27 18:16:56,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:16:56,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 18:16:56,113 INFO L175 Difference]: Start difference. First operand has 212 places, 331 transitions, 4128 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:16:56,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 375 transitions, 5177 flow [2024-06-27 18:16:56,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 375 transitions, 4997 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:56,254 INFO L231 Difference]: Finished difference. Result has 217 places, 340 transitions, 4298 flow [2024-06-27 18:16:56,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3948, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4298, PETRI_PLACES=217, PETRI_TRANSITIONS=340} [2024-06-27 18:16:56,254 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-06-27 18:16:56,254 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 340 transitions, 4298 flow [2024-06-27 18:16:56,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:56,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:56,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:56,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:16:56,255 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:56,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:56,256 INFO L85 PathProgramCache]: Analyzing trace with hash -601956832, now seen corresponding path program 9 times [2024-06-27 18:16:56,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:56,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907632473] [2024-06-27 18:16:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:56,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:56,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:56,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907632473] [2024-06-27 18:16:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907632473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:56,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:56,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:56,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827355086] [2024-06-27 18:16:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:56,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:56,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:56,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 340 transitions, 4298 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:56,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:56,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:56,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:57,585 INFO L124 PetriNetUnfolderBase]: 1625/3098 cut-off events. [2024-06-27 18:16:57,585 INFO L125 PetriNetUnfolderBase]: For 59158/59158 co-relation queries the response was YES. [2024-06-27 18:16:57,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18828 conditions, 3098 events. 1625/3098 cut-off events. For 59158/59158 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 21380 event pairs, 284 based on Foata normal form. 1/2992 useless extension candidates. Maximal degree in co-relation 18730. Up to 2204 conditions per place. [2024-06-27 18:16:57,612 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 283 selfloop transitions, 88 changer transitions 0/379 dead transitions. [2024-06-27 18:16:57,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 379 transitions, 5304 flow [2024-06-27 18:16:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:57,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 18:16:57,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-27 18:16:57,613 INFO L175 Difference]: Start difference. First operand has 217 places, 340 transitions, 4298 flow. Second operand 10 states and 189 transitions. [2024-06-27 18:16:57,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 379 transitions, 5304 flow [2024-06-27 18:16:57,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 379 transitions, 5117 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:57,760 INFO L231 Difference]: Finished difference. Result has 223 places, 344 transitions, 4363 flow [2024-06-27 18:16:57,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4111, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4363, PETRI_PLACES=223, PETRI_TRANSITIONS=344} [2024-06-27 18:16:57,760 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2024-06-27 18:16:57,760 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 344 transitions, 4363 flow [2024-06-27 18:16:57,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:57,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:57,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:57,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:16:57,761 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:57,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1536525065, now seen corresponding path program 3 times [2024-06-27 18:16:57,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:57,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780247986] [2024-06-27 18:16:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:57,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:58,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:58,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780247986] [2024-06-27 18:16:58,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780247986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:58,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:58,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:58,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172041841] [2024-06-27 18:16:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:58,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:58,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 344 transitions, 4363 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:58,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:58,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:58,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:59,064 INFO L124 PetriNetUnfolderBase]: 1647/3127 cut-off events. [2024-06-27 18:16:59,064 INFO L125 PetriNetUnfolderBase]: For 63643/63643 co-relation queries the response was YES. [2024-06-27 18:16:59,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19127 conditions, 3127 events. 1647/3127 cut-off events. For 63643/63643 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 21609 event pairs, 427 based on Foata normal form. 2/3026 useless extension candidates. Maximal degree in co-relation 19027. Up to 2478 conditions per place. [2024-06-27 18:16:59,090 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 326 selfloop transitions, 46 changer transitions 0/380 dead transitions. [2024-06-27 18:16:59,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 380 transitions, 5313 flow [2024-06-27 18:16:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:16:59,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 18:16:59,092 INFO L175 Difference]: Start difference. First operand has 223 places, 344 transitions, 4363 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:16:59,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 380 transitions, 5313 flow [2024-06-27 18:16:59,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 380 transitions, 5105 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:59,284 INFO L231 Difference]: Finished difference. Result has 226 places, 346 transitions, 4286 flow [2024-06-27 18:16:59,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4155, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4286, PETRI_PLACES=226, PETRI_TRANSITIONS=346} [2024-06-27 18:16:59,285 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-06-27 18:16:59,285 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 346 transitions, 4286 flow [2024-06-27 18:16:59,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:59,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:59,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:59,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:16:59,285 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:59,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1536784535, now seen corresponding path program 4 times [2024-06-27 18:16:59,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:59,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145457516] [2024-06-27 18:16:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:00,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:00,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:00,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145457516] [2024-06-27 18:17:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145457516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:00,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:00,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203834751] [2024-06-27 18:17:00,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:00,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:00,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:00,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:00,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:00,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:00,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 346 transitions, 4286 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:00,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:00,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:00,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:00,826 INFO L124 PetriNetUnfolderBase]: 1704/3240 cut-off events. [2024-06-27 18:17:00,827 INFO L125 PetriNetUnfolderBase]: For 64302/64302 co-relation queries the response was YES. [2024-06-27 18:17:00,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19540 conditions, 3240 events. 1704/3240 cut-off events. For 64302/64302 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22617 event pairs, 407 based on Foata normal form. 1/3129 useless extension candidates. Maximal degree in co-relation 19439. Up to 2463 conditions per place. [2024-06-27 18:17:00,856 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 325 selfloop transitions, 60 changer transitions 0/393 dead transitions. [2024-06-27 18:17:00,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 393 transitions, 5465 flow [2024-06-27 18:17:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:17:00,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 18:17:00,858 INFO L175 Difference]: Start difference. First operand has 226 places, 346 transitions, 4286 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:17:00,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 393 transitions, 5465 flow [2024-06-27 18:17:01,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 393 transitions, 5305 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:01,053 INFO L231 Difference]: Finished difference. Result has 230 places, 358 transitions, 4430 flow [2024-06-27 18:17:01,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4145, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4430, PETRI_PLACES=230, PETRI_TRANSITIONS=358} [2024-06-27 18:17:01,054 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-27 18:17:01,054 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 358 transitions, 4430 flow [2024-06-27 18:17:01,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:01,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:01,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:01,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:17:01,055 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:01,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1536784256, now seen corresponding path program 10 times [2024-06-27 18:17:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:01,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617025197] [2024-06-27 18:17:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:01,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:01,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:01,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617025197] [2024-06-27 18:17:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617025197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:01,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:01,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890707348] [2024-06-27 18:17:01,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:01,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:01,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:01,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 358 transitions, 4430 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:01,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:01,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:01,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:02,526 INFO L124 PetriNetUnfolderBase]: 1715/3217 cut-off events. [2024-06-27 18:17:02,526 INFO L125 PetriNetUnfolderBase]: For 65625/65625 co-relation queries the response was YES. [2024-06-27 18:17:02,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19880 conditions, 3217 events. 1715/3217 cut-off events. For 65625/65625 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22243 event pairs, 416 based on Foata normal form. 1/3119 useless extension candidates. Maximal degree in co-relation 19776. Up to 2326 conditions per place. [2024-06-27 18:17:02,554 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 308 selfloop transitions, 82 changer transitions 0/398 dead transitions. [2024-06-27 18:17:02,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 398 transitions, 5466 flow [2024-06-27 18:17:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:17:02,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-27 18:17:02,555 INFO L175 Difference]: Start difference. First operand has 230 places, 358 transitions, 4430 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:17:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 398 transitions, 5466 flow [2024-06-27 18:17:02,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 398 transitions, 5381 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:02,762 INFO L231 Difference]: Finished difference. Result has 237 places, 361 transitions, 4617 flow [2024-06-27 18:17:02,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4345, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4617, PETRI_PLACES=237, PETRI_TRANSITIONS=361} [2024-06-27 18:17:02,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-27 18:17:02,762 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 361 transitions, 4617 flow [2024-06-27 18:17:02,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:02,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:02,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:02,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:17:02,763 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:02,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1536794176, now seen corresponding path program 1 times [2024-06-27 18:17:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:02,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680909543] [2024-06-27 18:17:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:02,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:03,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:03,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680909543] [2024-06-27 18:17:03,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680909543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:03,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:03,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241793770] [2024-06-27 18:17:03,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:03,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:17:03,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 361 transitions, 4617 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:03,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:03,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:17:03,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:04,336 INFO L124 PetriNetUnfolderBase]: 1628/3109 cut-off events. [2024-06-27 18:17:04,336 INFO L125 PetriNetUnfolderBase]: For 71088/71190 co-relation queries the response was YES. [2024-06-27 18:17:04,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19709 conditions, 3109 events. 1628/3109 cut-off events. For 71088/71190 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 21702 event pairs, 450 based on Foata normal form. 85/3087 useless extension candidates. Maximal degree in co-relation 19602. Up to 2394 conditions per place. [2024-06-27 18:17:04,362 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 327 selfloop transitions, 25 changer transitions 0/396 dead transitions. [2024-06-27 18:17:04,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 396 transitions, 5517 flow [2024-06-27 18:17:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:17:04,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 18:17:04,364 INFO L175 Difference]: Start difference. First operand has 237 places, 361 transitions, 4617 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:17:04,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 396 transitions, 5517 flow [2024-06-27 18:17:04,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 396 transitions, 5359 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:04,586 INFO L231 Difference]: Finished difference. Result has 241 places, 363 transitions, 4546 flow [2024-06-27 18:17:04,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4459, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4546, PETRI_PLACES=241, PETRI_TRANSITIONS=363} [2024-06-27 18:17:04,586 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 199 predicate places. [2024-06-27 18:17:04,586 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 363 transitions, 4546 flow [2024-06-27 18:17:04,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:04,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:04,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:04,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:17:04,587 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:04,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1536793835, now seen corresponding path program 5 times [2024-06-27 18:17:04,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:04,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813522745] [2024-06-27 18:17:04,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:04,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:05,329 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 18:17:05,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:05,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813522745] [2024-06-27 18:17:05,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813522745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:05,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:05,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:05,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649810973] [2024-06-27 18:17:05,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:05,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:05,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:05,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:05,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:05,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 363 transitions, 4546 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:05,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:05,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:05,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:06,162 INFO L124 PetriNetUnfolderBase]: 1724/3245 cut-off events. [2024-06-27 18:17:06,162 INFO L125 PetriNetUnfolderBase]: For 68858/68858 co-relation queries the response was YES. [2024-06-27 18:17:06,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20338 conditions, 3245 events. 1724/3245 cut-off events. For 68858/68858 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 22405 event pairs, 402 based on Foata normal form. 1/3143 useless extension candidates. Maximal degree in co-relation 20231. Up to 2495 conditions per place. [2024-06-27 18:17:06,190 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 324 selfloop transitions, 64 changer transitions 0/396 dead transitions. [2024-06-27 18:17:06,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 396 transitions, 5490 flow [2024-06-27 18:17:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:17:06,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 18:17:06,191 INFO L175 Difference]: Start difference. First operand has 241 places, 363 transitions, 4546 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:17:06,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 396 transitions, 5490 flow [2024-06-27 18:17:06,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 396 transitions, 5328 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:06,409 INFO L231 Difference]: Finished difference. Result has 243 places, 363 transitions, 4517 flow [2024-06-27 18:17:06,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4384, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4517, PETRI_PLACES=243, PETRI_TRANSITIONS=363} [2024-06-27 18:17:06,410 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 201 predicate places. [2024-06-27 18:17:06,410 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 363 transitions, 4517 flow [2024-06-27 18:17:06,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:06,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:06,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:06,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:17:06,411 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:06,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:06,411 INFO L85 PathProgramCache]: Analyzing trace with hash -878698396, now seen corresponding path program 11 times [2024-06-27 18:17:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018068255] [2024-06-27 18:17:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:07,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:07,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018068255] [2024-06-27 18:17:07,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018068255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:07,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:07,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:07,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730365284] [2024-06-27 18:17:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:07,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:07,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:07,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:07,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 363 transitions, 4517 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:07,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:07,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:07,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:07,840 INFO L124 PetriNetUnfolderBase]: 1746/3302 cut-off events. [2024-06-27 18:17:07,840 INFO L125 PetriNetUnfolderBase]: For 73459/73459 co-relation queries the response was YES. [2024-06-27 18:17:07,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20760 conditions, 3302 events. 1746/3302 cut-off events. For 73459/73459 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23041 event pairs, 385 based on Foata normal form. 2/3196 useless extension candidates. Maximal degree in co-relation 20652. Up to 2414 conditions per place. [2024-06-27 18:17:07,871 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 294 selfloop transitions, 95 changer transitions 0/397 dead transitions. [2024-06-27 18:17:07,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 397 transitions, 5547 flow [2024-06-27 18:17:07,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:17:07,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 18:17:07,872 INFO L175 Difference]: Start difference. First operand has 243 places, 363 transitions, 4517 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:17:07,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 397 transitions, 5547 flow [2024-06-27 18:17:08,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 397 transitions, 5428 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:08,095 INFO L231 Difference]: Finished difference. Result has 244 places, 366 transitions, 4712 flow [2024-06-27 18:17:08,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4398, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4712, PETRI_PLACES=244, PETRI_TRANSITIONS=366} [2024-06-27 18:17:08,096 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-27 18:17:08,096 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 366 transitions, 4712 flow [2024-06-27 18:17:08,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:08,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:08,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:08,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:17:08,096 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:08,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:08,097 INFO L85 PathProgramCache]: Analyzing trace with hash -874020217, now seen corresponding path program 6 times [2024-06-27 18:17:08,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:08,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159642988] [2024-06-27 18:17:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:08,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:08,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:08,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159642988] [2024-06-27 18:17:08,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159642988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:08,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:08,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:08,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106971987] [2024-06-27 18:17:08,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:08,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:08,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:08,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:08,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:08,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 366 transitions, 4712 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:08,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:08,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:08,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:09,517 INFO L124 PetriNetUnfolderBase]: 1757/3343 cut-off events. [2024-06-27 18:17:09,517 INFO L125 PetriNetUnfolderBase]: For 76765/76765 co-relation queries the response was YES. [2024-06-27 18:17:09,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21440 conditions, 3343 events. 1757/3343 cut-off events. For 76765/76765 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23528 event pairs, 423 based on Foata normal form. 1/3231 useless extension candidates. Maximal degree in co-relation 21331. Up to 2614 conditions per place. [2024-06-27 18:17:09,546 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 336 selfloop transitions, 55 changer transitions 0/399 dead transitions. [2024-06-27 18:17:09,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 399 transitions, 5692 flow [2024-06-27 18:17:09,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:17:09,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 18:17:09,547 INFO L175 Difference]: Start difference. First operand has 244 places, 366 transitions, 4712 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:17:09,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 399 transitions, 5692 flow [2024-06-27 18:17:09,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 399 transitions, 5456 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:09,783 INFO L231 Difference]: Finished difference. Result has 246 places, 369 transitions, 4653 flow [2024-06-27 18:17:09,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4476, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4653, PETRI_PLACES=246, PETRI_TRANSITIONS=369} [2024-06-27 18:17:09,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2024-06-27 18:17:09,783 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 369 transitions, 4653 flow [2024-06-27 18:17:09,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:09,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:09,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:09,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:17:09,784 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:09,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:09,784 INFO L85 PathProgramCache]: Analyzing trace with hash 620636052, now seen corresponding path program 12 times [2024-06-27 18:17:09,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:09,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013416266] [2024-06-27 18:17:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:09,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:10,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:10,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013416266] [2024-06-27 18:17:10,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013416266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:10,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:10,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:10,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398506534] [2024-06-27 18:17:10,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:10,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:10,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:10,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:10,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:10,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:10,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 369 transitions, 4653 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:10,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:10,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:10,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:11,222 INFO L124 PetriNetUnfolderBase]: 1794/3422 cut-off events. [2024-06-27 18:17:11,222 INFO L125 PetriNetUnfolderBase]: For 71504/71504 co-relation queries the response was YES. [2024-06-27 18:17:11,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21349 conditions, 3422 events. 1794/3422 cut-off events. For 71504/71504 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 24257 event pairs, 334 based on Foata normal form. 1/3296 useless extension candidates. Maximal degree in co-relation 21239. Up to 2210 conditions per place. [2024-06-27 18:17:11,255 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 270 selfloop transitions, 128 changer transitions 0/406 dead transitions. [2024-06-27 18:17:11,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 406 transitions, 5843 flow [2024-06-27 18:17:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:17:11,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 18:17:11,256 INFO L175 Difference]: Start difference. First operand has 246 places, 369 transitions, 4653 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:17:11,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 406 transitions, 5843 flow [2024-06-27 18:17:11,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 406 transitions, 5718 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:11,464 INFO L231 Difference]: Finished difference. Result has 249 places, 374 transitions, 4984 flow [2024-06-27 18:17:11,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4528, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4984, PETRI_PLACES=249, PETRI_TRANSITIONS=374} [2024-06-27 18:17:11,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-27 18:17:11,465 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 374 transitions, 4984 flow [2024-06-27 18:17:11,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:11,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:11,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:17:11,466 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:11,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash 620628612, now seen corresponding path program 13 times [2024-06-27 18:17:11,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:11,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181601479] [2024-06-27 18:17:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:12,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:12,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181601479] [2024-06-27 18:17:12,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181601479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:12,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:12,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:12,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596354522] [2024-06-27 18:17:12,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:12,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:12,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:12,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:12,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:12,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:12,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 374 transitions, 4984 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:12,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:12,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:12,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:12,953 INFO L124 PetriNetUnfolderBase]: 1790/3393 cut-off events. [2024-06-27 18:17:12,953 INFO L125 PetriNetUnfolderBase]: For 77034/77034 co-relation queries the response was YES. [2024-06-27 18:17:12,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22192 conditions, 3393 events. 1790/3393 cut-off events. For 77034/77034 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 23858 event pairs, 351 based on Foata normal form. 2/3283 useless extension candidates. Maximal degree in co-relation 22080. Up to 2416 conditions per place. [2024-06-27 18:17:12,986 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 303 selfloop transitions, 95 changer transitions 0/406 dead transitions. [2024-06-27 18:17:12,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 406 transitions, 5978 flow [2024-06-27 18:17:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:17:12,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:17:12,988 INFO L175 Difference]: Start difference. First operand has 249 places, 374 transitions, 4984 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:17:12,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 406 transitions, 5978 flow [2024-06-27 18:17:13,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 406 transitions, 5792 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:13,241 INFO L231 Difference]: Finished difference. Result has 253 places, 374 transitions, 5006 flow [2024-06-27 18:17:13,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4798, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5006, PETRI_PLACES=253, PETRI_TRANSITIONS=374} [2024-06-27 18:17:13,242 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-27 18:17:13,242 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 374 transitions, 5006 flow [2024-06-27 18:17:13,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:13,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:13,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:13,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:17:13,242 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:13,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash -700644316, now seen corresponding path program 14 times [2024-06-27 18:17:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725859759] [2024-06-27 18:17:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:13,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:13,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725859759] [2024-06-27 18:17:13,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725859759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:13,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:13,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:13,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704593536] [2024-06-27 18:17:13,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:13,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:13,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:13,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:13,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:13,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:13,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 374 transitions, 5006 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:13,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:13,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:13,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:14,787 INFO L124 PetriNetUnfolderBase]: 1812/3447 cut-off events. [2024-06-27 18:17:14,787 INFO L125 PetriNetUnfolderBase]: For 77263/77263 co-relation queries the response was YES. [2024-06-27 18:17:14,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22731 conditions, 3447 events. 1812/3447 cut-off events. For 77263/77263 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24348 event pairs, 246 based on Foata normal form. 2/3330 useless extension candidates. Maximal degree in co-relation 22617. Up to 2400 conditions per place. [2024-06-27 18:17:14,814 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 308 selfloop transitions, 93 changer transitions 0/409 dead transitions. [2024-06-27 18:17:14,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 409 transitions, 6096 flow [2024-06-27 18:17:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:17:14,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:17:14,815 INFO L175 Difference]: Start difference. First operand has 253 places, 374 transitions, 5006 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:17:14,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 409 transitions, 6096 flow [2024-06-27 18:17:15,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 409 transitions, 5792 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 18:17:15,011 INFO L231 Difference]: Finished difference. Result has 252 places, 377 transitions, 5000 flow [2024-06-27 18:17:15,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5000, PETRI_PLACES=252, PETRI_TRANSITIONS=377} [2024-06-27 18:17:15,011 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-27 18:17:15,011 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 377 transitions, 5000 flow [2024-06-27 18:17:15,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:15,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:15,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:15,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:17:15,012 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:15,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1207445551, now seen corresponding path program 7 times [2024-06-27 18:17:15,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:15,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274407302] [2024-06-27 18:17:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:15,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:15,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:15,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274407302] [2024-06-27 18:17:15,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274407302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:15,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:15,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:15,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372959671] [2024-06-27 18:17:15,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:15,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:15,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:15,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 377 transitions, 5000 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:15,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:15,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:15,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:16,592 INFO L124 PetriNetUnfolderBase]: 1834/3466 cut-off events. [2024-06-27 18:17:16,593 INFO L125 PetriNetUnfolderBase]: For 69694/69694 co-relation queries the response was YES. [2024-06-27 18:17:16,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22388 conditions, 3466 events. 1834/3466 cut-off events. For 69694/69694 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24339 event pairs, 392 based on Foata normal form. 2/3353 useless extension candidates. Maximal degree in co-relation 22275. Up to 2705 conditions per place. [2024-06-27 18:17:16,623 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 349 selfloop transitions, 53 changer transitions 0/410 dead transitions. [2024-06-27 18:17:16,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 410 transitions, 6016 flow [2024-06-27 18:17:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:17:16,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 18:17:16,624 INFO L175 Difference]: Start difference. First operand has 252 places, 377 transitions, 5000 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:17:16,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 410 transitions, 6016 flow [2024-06-27 18:17:16,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 410 transitions, 5776 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:16,839 INFO L231 Difference]: Finished difference. Result has 254 places, 379 transitions, 4919 flow [2024-06-27 18:17:16,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4760, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4919, PETRI_PLACES=254, PETRI_TRANSITIONS=379} [2024-06-27 18:17:16,840 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-06-27 18:17:16,840 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 379 transitions, 4919 flow [2024-06-27 18:17:16,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:16,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:16,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:16,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:17:16,840 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:16,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:16,841 INFO L85 PathProgramCache]: Analyzing trace with hash -700377127, now seen corresponding path program 8 times [2024-06-27 18:17:16,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:16,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386273310] [2024-06-27 18:17:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:16,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:17,441 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 18:17:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386273310] [2024-06-27 18:17:17,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386273310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:17,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:17,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:17,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642861743] [2024-06-27 18:17:17,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:17,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:17,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:17,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:17,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:17,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:17,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 379 transitions, 4919 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:17,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:17,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:17,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:18,453 INFO L124 PetriNetUnfolderBase]: 1908/3536 cut-off events. [2024-06-27 18:17:18,454 INFO L125 PetriNetUnfolderBase]: For 73748/73748 co-relation queries the response was YES. [2024-06-27 18:17:18,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23086 conditions, 3536 events. 1908/3536 cut-off events. For 73748/73748 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 24508 event pairs, 359 based on Foata normal form. 2/3434 useless extension candidates. Maximal degree in co-relation 22972. Up to 2523 conditions per place. [2024-06-27 18:17:18,486 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 335 selfloop transitions, 78 changer transitions 0/421 dead transitions. [2024-06-27 18:17:18,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 421 transitions, 6293 flow [2024-06-27 18:17:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:17:18,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:17:18,487 INFO L175 Difference]: Start difference. First operand has 254 places, 379 transitions, 4919 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:17:18,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 421 transitions, 6293 flow [2024-06-27 18:17:18,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 421 transitions, 6146 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:18,717 INFO L231 Difference]: Finished difference. Result has 257 places, 386 transitions, 5131 flow [2024-06-27 18:17:18,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4788, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5131, PETRI_PLACES=257, PETRI_TRANSITIONS=386} [2024-06-27 18:17:18,718 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 215 predicate places. [2024-06-27 18:17:18,718 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 386 transitions, 5131 flow [2024-06-27 18:17:18,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:18,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:18,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:17:18,719 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:18,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash 794019672, now seen corresponding path program 15 times [2024-06-27 18:17:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:18,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97337090] [2024-06-27 18:17:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:18,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:19,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:19,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97337090] [2024-06-27 18:17:19,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97337090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:19,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:19,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:19,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114992218] [2024-06-27 18:17:19,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:19,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:19,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:19,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:19,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:19,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:19,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 386 transitions, 5131 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:19,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:19,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:19,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:20,171 INFO L124 PetriNetUnfolderBase]: 1968/3686 cut-off events. [2024-06-27 18:17:20,171 INFO L125 PetriNetUnfolderBase]: For 73727/73727 co-relation queries the response was YES. [2024-06-27 18:17:20,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24035 conditions, 3686 events. 1968/3686 cut-off events. For 73727/73727 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 26008 event pairs, 316 based on Foata normal form. 1/3565 useless extension candidates. Maximal degree in co-relation 23919. Up to 2904 conditions per place. [2024-06-27 18:17:20,205 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 351 selfloop transitions, 95 changer transitions 0/454 dead transitions. [2024-06-27 18:17:20,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 454 transitions, 6748 flow [2024-06-27 18:17:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:17:20,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:17:20,206 INFO L175 Difference]: Start difference. First operand has 257 places, 386 transitions, 5131 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:17:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 454 transitions, 6748 flow [2024-06-27 18:17:20,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 454 transitions, 6644 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:20,448 INFO L231 Difference]: Finished difference. Result has 264 places, 429 transitions, 5914 flow [2024-06-27 18:17:20,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5042, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5914, PETRI_PLACES=264, PETRI_TRANSITIONS=429} [2024-06-27 18:17:20,448 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-06-27 18:17:20,448 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 429 transitions, 5914 flow [2024-06-27 18:17:20,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:20,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:20,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:20,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:17:20,449 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:20,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:20,449 INFO L85 PathProgramCache]: Analyzing trace with hash -700377406, now seen corresponding path program 16 times [2024-06-27 18:17:20,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:20,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939416325] [2024-06-27 18:17:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:20,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:21,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939416325] [2024-06-27 18:17:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939416325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:21,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:21,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:21,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904710376] [2024-06-27 18:17:21,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:21,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:21,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:21,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:21,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:21,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 429 transitions, 5914 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:21,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:21,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:21,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:21,973 INFO L124 PetriNetUnfolderBase]: 1982/3725 cut-off events. [2024-06-27 18:17:21,973 INFO L125 PetriNetUnfolderBase]: For 76371/76371 co-relation queries the response was YES. [2024-06-27 18:17:21,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24930 conditions, 3725 events. 1982/3725 cut-off events. For 76371/76371 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 26448 event pairs, 238 based on Foata normal form. 1/3595 useless extension candidates. Maximal degree in co-relation 24810. Up to 2192 conditions per place. [2024-06-27 18:17:22,008 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 272 selfloop transitions, 184 changer transitions 0/464 dead transitions. [2024-06-27 18:17:22,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 464 transitions, 7100 flow [2024-06-27 18:17:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:17:22,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 18:17:22,015 INFO L175 Difference]: Start difference. First operand has 264 places, 429 transitions, 5914 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:17:22,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 464 transitions, 7100 flow [2024-06-27 18:17:22,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 464 transitions, 6978 flow, removed 61 selfloop flow, removed 0 redundant places. [2024-06-27 18:17:22,280 INFO L231 Difference]: Finished difference. Result has 274 places, 433 transitions, 6370 flow [2024-06-27 18:17:22,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5792, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6370, PETRI_PLACES=274, PETRI_TRANSITIONS=433} [2024-06-27 18:17:22,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-27 18:17:22,281 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 433 transitions, 6370 flow [2024-06-27 18:17:22,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:22,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:22,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:22,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:17:22,281 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:22,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash -700367486, now seen corresponding path program 2 times [2024-06-27 18:17:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:22,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626083641] [2024-06-27 18:17:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:22,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:23,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626083641] [2024-06-27 18:17:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626083641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:23,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:23,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568557408] [2024-06-27 18:17:23,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:23,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:17:23,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 433 transitions, 6370 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:23,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:23,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:17:23,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:24,018 INFO L124 PetriNetUnfolderBase]: 1862/3516 cut-off events. [2024-06-27 18:17:24,019 INFO L125 PetriNetUnfolderBase]: For 83705/83805 co-relation queries the response was YES. [2024-06-27 18:17:24,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24879 conditions, 3516 events. 1862/3516 cut-off events. For 83705/83805 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24878 event pairs, 429 based on Foata normal form. 73/3476 useless extension candidates. Maximal degree in co-relation 24754. Up to 2666 conditions per place. [2024-06-27 18:17:24,058 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 378 selfloop transitions, 36 changer transitions 0/465 dead transitions. [2024-06-27 18:17:24,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 465 transitions, 7388 flow [2024-06-27 18:17:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:17:24,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 18:17:24,060 INFO L175 Difference]: Start difference. First operand has 274 places, 433 transitions, 6370 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:17:24,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 465 transitions, 7388 flow [2024-06-27 18:17:24,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 465 transitions, 7211 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:24,376 INFO L231 Difference]: Finished difference. Result has 278 places, 434 transitions, 6290 flow [2024-06-27 18:17:24,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6193, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6290, PETRI_PLACES=278, PETRI_TRANSITIONS=434} [2024-06-27 18:17:24,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-27 18:17:24,377 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 434 transitions, 6290 flow [2024-06-27 18:17:24,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:24,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:24,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:24,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:17:24,378 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:24,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:24,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1746816871, now seen corresponding path program 9 times [2024-06-27 18:17:24,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:24,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141004185] [2024-06-27 18:17:24,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:24,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:25,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:25,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141004185] [2024-06-27 18:17:25,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141004185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:25,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:25,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:25,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140660233] [2024-06-27 18:17:25,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:25,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:25,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:25,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:25,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:25,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:25,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 434 transitions, 6290 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:25,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:25,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:25,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:25,876 INFO L124 PetriNetUnfolderBase]: 1976/3654 cut-off events. [2024-06-27 18:17:25,877 INFO L125 PetriNetUnfolderBase]: For 78864/78864 co-relation queries the response was YES. [2024-06-27 18:17:25,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25830 conditions, 3654 events. 1976/3654 cut-off events. For 78864/78864 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25501 event pairs, 350 based on Foata normal form. 2/3548 useless extension candidates. Maximal degree in co-relation 25703. Up to 2609 conditions per place. [2024-06-27 18:17:25,919 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 363 selfloop transitions, 99 changer transitions 0/470 dead transitions. [2024-06-27 18:17:25,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 470 transitions, 7527 flow [2024-06-27 18:17:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:17:25,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:17:25,920 INFO L175 Difference]: Start difference. First operand has 278 places, 434 transitions, 6290 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:17:25,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 470 transitions, 7527 flow [2024-06-27 18:17:26,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 470 transitions, 7411 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:26,235 INFO L231 Difference]: Finished difference. Result has 280 places, 434 transitions, 6381 flow [2024-06-27 18:17:26,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6174, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6381, PETRI_PLACES=280, PETRI_TRANSITIONS=434} [2024-06-27 18:17:26,236 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-27 18:17:26,236 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 434 transitions, 6381 flow [2024-06-27 18:17:26,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:26,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:26,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:26,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:17:26,237 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:26,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1325822724, now seen corresponding path program 3 times [2024-06-27 18:17:26,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:26,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122582642] [2024-06-27 18:17:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:26,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:26,952 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 18:17:26,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:26,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122582642] [2024-06-27 18:17:26,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122582642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:26,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:26,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:17:26,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978947479] [2024-06-27 18:17:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:17:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:17:26,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:17:27,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:17:27,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 434 transitions, 6381 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:27,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:27,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:17:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:27,831 INFO L124 PetriNetUnfolderBase]: 1865/3640 cut-off events. [2024-06-27 18:17:27,831 INFO L125 PetriNetUnfolderBase]: For 81492/81582 co-relation queries the response was YES. [2024-06-27 18:17:27,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25059 conditions, 3640 events. 1865/3640 cut-off events. For 81492/81582 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 26291 event pairs, 404 based on Foata normal form. 70/3565 useless extension candidates. Maximal degree in co-relation 24931. Up to 2527 conditions per place. [2024-06-27 18:17:27,870 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 365 selfloop transitions, 49 changer transitions 0/465 dead transitions. [2024-06-27 18:17:27,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 465 transitions, 7542 flow [2024-06-27 18:17:27,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 18:17:27,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-27 18:17:27,871 INFO L175 Difference]: Start difference. First operand has 280 places, 434 transitions, 6381 flow. Second operand 8 states and 158 transitions. [2024-06-27 18:17:27,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 465 transitions, 7542 flow [2024-06-27 18:17:28,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 465 transitions, 7359 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:28,189 INFO L231 Difference]: Finished difference. Result has 280 places, 438 transitions, 6380 flow [2024-06-27 18:17:28,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6200, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6380, PETRI_PLACES=280, PETRI_TRANSITIONS=438} [2024-06-27 18:17:28,190 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-27 18:17:28,190 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 438 transitions, 6380 flow [2024-06-27 18:17:28,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:28,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:28,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:28,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:17:28,190 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:28,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1325822383, now seen corresponding path program 10 times [2024-06-27 18:17:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85288905] [2024-06-27 18:17:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:28,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:28,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:28,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:28,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85288905] [2024-06-27 18:17:28,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85288905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:28,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:28,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:28,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843090287] [2024-06-27 18:17:28,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:28,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:28,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:28,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:28,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 438 transitions, 6380 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:28,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:28,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:28,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:29,770 INFO L124 PetriNetUnfolderBase]: 2070/3877 cut-off events. [2024-06-27 18:17:29,771 INFO L125 PetriNetUnfolderBase]: For 90409/90409 co-relation queries the response was YES. [2024-06-27 18:17:29,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27530 conditions, 3877 events. 2070/3877 cut-off events. For 90409/90409 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 27284 event pairs, 249 based on Foata normal form. 2/3744 useless extension candidates. Maximal degree in co-relation 27402. Up to 2435 conditions per place. [2024-06-27 18:17:29,812 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 371 selfloop transitions, 107 changer transitions 0/486 dead transitions. [2024-06-27 18:17:29,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 486 transitions, 8083 flow [2024-06-27 18:17:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:17:29,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2024-06-27 18:17:29,813 INFO L175 Difference]: Start difference. First operand has 280 places, 438 transitions, 6380 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:17:29,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 486 transitions, 8083 flow [2024-06-27 18:17:30,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 486 transitions, 8004 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:30,174 INFO L231 Difference]: Finished difference. Result has 284 places, 446 transitions, 6715 flow [2024-06-27 18:17:30,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6307, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6715, PETRI_PLACES=284, PETRI_TRANSITIONS=446} [2024-06-27 18:17:30,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-27 18:17:30,175 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 446 transitions, 6715 flow [2024-06-27 18:17:30,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:30,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:30,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:30,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:17:30,176 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:30,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:30,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1498924542, now seen corresponding path program 17 times [2024-06-27 18:17:30,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:30,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479277584] [2024-06-27 18:17:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:30,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:30,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479277584] [2024-06-27 18:17:30,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479277584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:30,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:30,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:30,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035506266] [2024-06-27 18:17:30,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:30,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:30,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:30,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:30,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:30,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:30,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 446 transitions, 6715 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:30,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:30,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:30,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:31,936 INFO L124 PetriNetUnfolderBase]: 2107/3934 cut-off events. [2024-06-27 18:17:31,936 INFO L125 PetriNetUnfolderBase]: For 96645/96645 co-relation queries the response was YES. [2024-06-27 18:17:31,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28724 conditions, 3934 events. 2107/3934 cut-off events. For 96645/96645 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 28080 event pairs, 245 based on Foata normal form. 1/3792 useless extension candidates. Maximal degree in co-relation 28595. Up to 2759 conditions per place. [2024-06-27 18:17:31,981 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 359 selfloop transitions, 117 changer transitions 0/484 dead transitions. [2024-06-27 18:17:31,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 484 transitions, 8121 flow [2024-06-27 18:17:31,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:31,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:17:31,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:17:31,982 INFO L175 Difference]: Start difference. First operand has 284 places, 446 transitions, 6715 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:17:31,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 484 transitions, 8121 flow [2024-06-27 18:17:32,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 484 transitions, 8006 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 18:17:32,329 INFO L231 Difference]: Finished difference. Result has 291 places, 451 transitions, 6978 flow [2024-06-27 18:17:32,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6600, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6978, PETRI_PLACES=291, PETRI_TRANSITIONS=451} [2024-06-27 18:17:32,330 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-27 18:17:32,330 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 451 transitions, 6978 flow [2024-06-27 18:17:32,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:32,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:32,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:17:32,330 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:32,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash 460550746, now seen corresponding path program 18 times [2024-06-27 18:17:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:32,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162785627] [2024-06-27 18:17:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:32,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:32,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162785627] [2024-06-27 18:17:32,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162785627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:32,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:32,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:32,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72749493] [2024-06-27 18:17:32,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:32,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:32,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:32,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:33,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:33,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 451 transitions, 6978 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:33,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:33,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:33,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:33,960 INFO L124 PetriNetUnfolderBase]: 2103/3934 cut-off events. [2024-06-27 18:17:33,960 INFO L125 PetriNetUnfolderBase]: For 99574/99574 co-relation queries the response was YES. [2024-06-27 18:17:33,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29093 conditions, 3934 events. 2103/3934 cut-off events. For 99574/99574 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 28121 event pairs, 247 based on Foata normal form. 2/3791 useless extension candidates. Maximal degree in co-relation 28961. Up to 2777 conditions per place. [2024-06-27 18:17:34,001 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 361 selfloop transitions, 114 changer transitions 0/483 dead transitions. [2024-06-27 18:17:34,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 483 transitions, 8160 flow [2024-06-27 18:17:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:17:34,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:17:34,002 INFO L175 Difference]: Start difference. First operand has 291 places, 451 transitions, 6978 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:17:34,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 483 transitions, 8160 flow [2024-06-27 18:17:34,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 483 transitions, 7921 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:34,372 INFO L231 Difference]: Finished difference. Result has 295 places, 451 transitions, 6973 flow [2024-06-27 18:17:34,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6739, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6973, PETRI_PLACES=295, PETRI_TRANSITIONS=451} [2024-06-27 18:17:34,373 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2024-06-27 18:17:34,373 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 451 transitions, 6973 flow [2024-06-27 18:17:34,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:34,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:34,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:34,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:17:34,374 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:34,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1498924263, now seen corresponding path program 11 times [2024-06-27 18:17:34,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:34,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725195601] [2024-06-27 18:17:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:34,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:34,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:34,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725195601] [2024-06-27 18:17:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725195601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:34,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300397226] [2024-06-27 18:17:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:34,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:34,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:34,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:34,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:35,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:35,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 451 transitions, 6973 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:35,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:35,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:35,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:35,944 INFO L124 PetriNetUnfolderBase]: 2125/3962 cut-off events. [2024-06-27 18:17:35,944 INFO L125 PetriNetUnfolderBase]: For 100574/100574 co-relation queries the response was YES. [2024-06-27 18:17:35,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29507 conditions, 3962 events. 2125/3962 cut-off events. For 100574/100574 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28280 event pairs, 297 based on Foata normal form. 2/3822 useless extension candidates. Maximal degree in co-relation 29373. Up to 3145 conditions per place. [2024-06-27 18:17:35,984 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 418 selfloop transitions, 60 changer transitions 0/486 dead transitions. [2024-06-27 18:17:35,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 486 transitions, 8183 flow [2024-06-27 18:17:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:17:35,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-27 18:17:35,986 INFO L175 Difference]: Start difference. First operand has 295 places, 451 transitions, 6973 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:17:35,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 486 transitions, 8183 flow [2024-06-27 18:17:36,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 486 transitions, 7950 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:36,352 INFO L231 Difference]: Finished difference. Result has 296 places, 453 transitions, 6919 flow [2024-06-27 18:17:36,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6740, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6919, PETRI_PLACES=296, PETRI_TRANSITIONS=453} [2024-06-27 18:17:36,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-27 18:17:36,353 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 453 transitions, 6919 flow [2024-06-27 18:17:36,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:36,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:36,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:17:36,353 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:36,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1498665072, now seen corresponding path program 19 times [2024-06-27 18:17:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940240641] [2024-06-27 18:17:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:37,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940240641] [2024-06-27 18:17:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940240641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:37,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492369962] [2024-06-27 18:17:37,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:37,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:37,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:37,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:37,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:37,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 453 transitions, 6919 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:37,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:37,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:37,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:38,056 INFO L124 PetriNetUnfolderBase]: 2136/3976 cut-off events. [2024-06-27 18:17:38,056 INFO L125 PetriNetUnfolderBase]: For 100508/100508 co-relation queries the response was YES. [2024-06-27 18:17:38,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29512 conditions, 3976 events. 2136/3976 cut-off events. For 100508/100508 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28296 event pairs, 244 based on Foata normal form. 1/3835 useless extension candidates. Maximal degree in co-relation 29377. Up to 2773 conditions per place. [2024-06-27 18:17:38,093 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 358 selfloop transitions, 121 changer transitions 0/487 dead transitions. [2024-06-27 18:17:38,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 487 transitions, 8163 flow [2024-06-27 18:17:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:38,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:17:38,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-27 18:17:38,094 INFO L175 Difference]: Start difference. First operand has 296 places, 453 transitions, 6919 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:17:38,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 487 transitions, 8163 flow [2024-06-27 18:17:38,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 487 transitions, 8010 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:38,433 INFO L231 Difference]: Finished difference. Result has 298 places, 455 transitions, 7071 flow [2024-06-27 18:17:38,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6766, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7071, PETRI_PLACES=298, PETRI_TRANSITIONS=455} [2024-06-27 18:17:38,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-27 18:17:38,433 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 455 transitions, 7071 flow [2024-06-27 18:17:38,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:38,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:38,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:38,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:17:38,434 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:38,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1498664793, now seen corresponding path program 12 times [2024-06-27 18:17:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:38,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528190563] [2024-06-27 18:17:38,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:38,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:39,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:39,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528190563] [2024-06-27 18:17:39,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528190563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:39,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:39,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:39,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123071076] [2024-06-27 18:17:39,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:39,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:39,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:39,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:39,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:39,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:39,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 455 transitions, 7071 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:39,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:39,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:39,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:40,069 INFO L124 PetriNetUnfolderBase]: 2158/4001 cut-off events. [2024-06-27 18:17:40,069 INFO L125 PetriNetUnfolderBase]: For 107367/107367 co-relation queries the response was YES. [2024-06-27 18:17:40,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30168 conditions, 4001 events. 2158/4001 cut-off events. For 107367/107367 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 28440 event pairs, 291 based on Foata normal form. 2/3865 useless extension candidates. Maximal degree in co-relation 30032. Up to 3097 conditions per place. [2024-06-27 18:17:40,215 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 418 selfloop transitions, 68 changer transitions 0/494 dead transitions. [2024-06-27 18:17:40,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 494 transitions, 8553 flow [2024-06-27 18:17:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 18:17:40,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-27 18:17:40,216 INFO L175 Difference]: Start difference. First operand has 298 places, 455 transitions, 7071 flow. Second operand 9 states and 172 transitions. [2024-06-27 18:17:40,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 494 transitions, 8553 flow [2024-06-27 18:17:40,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 494 transitions, 8266 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:40,614 INFO L231 Difference]: Finished difference. Result has 300 places, 457 transitions, 6979 flow [2024-06-27 18:17:40,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6784, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6979, PETRI_PLACES=300, PETRI_TRANSITIONS=457} [2024-06-27 18:17:40,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 258 predicate places. [2024-06-27 18:17:40,615 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 457 transitions, 6979 flow [2024-06-27 18:17:40,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:40,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:40,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:40,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:17:40,615 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:40,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:40,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1498655152, now seen corresponding path program 4 times [2024-06-27 18:17:40,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:40,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741374401] [2024-06-27 18:17:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:41,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:41,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741374401] [2024-06-27 18:17:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741374401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:41,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:41,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912054111] [2024-06-27 18:17:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:41,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:41,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:41,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:17:41,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 457 transitions, 6979 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:41,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:41,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:17:41,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:42,282 INFO L124 PetriNetUnfolderBase]: 2019/3808 cut-off events. [2024-06-27 18:17:42,282 INFO L125 PetriNetUnfolderBase]: For 104997/105088 co-relation queries the response was YES. [2024-06-27 18:17:42,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28330 conditions, 3808 events. 2019/3808 cut-off events. For 104997/105088 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 27324 event pairs, 430 based on Foata normal form. 66/3743 useless extension candidates. Maximal degree in co-relation 28193. Up to 2869 conditions per place. [2024-06-27 18:17:42,405 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 399 selfloop transitions, 32 changer transitions 0/488 dead transitions. [2024-06-27 18:17:42,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 488 transitions, 8028 flow [2024-06-27 18:17:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:17:42,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 18:17:42,407 INFO L175 Difference]: Start difference. First operand has 300 places, 457 transitions, 6979 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:17:42,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 488 transitions, 8028 flow [2024-06-27 18:17:42,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 488 transitions, 7721 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:42,870 INFO L231 Difference]: Finished difference. Result has 302 places, 457 transitions, 6741 flow [2024-06-27 18:17:42,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6672, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6741, PETRI_PLACES=302, PETRI_TRANSITIONS=457} [2024-06-27 18:17:42,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-06-27 18:17:42,871 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 457 transitions, 6741 flow [2024-06-27 18:17:42,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:42,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:42,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:42,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:17:42,871 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:42,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:42,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1184965563, now seen corresponding path program 13 times [2024-06-27 18:17:42,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:42,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220421499] [2024-06-27 18:17:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:42,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:43,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220421499] [2024-06-27 18:17:43,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220421499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:43,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:43,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:43,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704526478] [2024-06-27 18:17:43,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:43,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:43,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:43,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 457 transitions, 6741 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:43,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:43,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:43,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:44,768 INFO L124 PetriNetUnfolderBase]: 2152/4016 cut-off events. [2024-06-27 18:17:44,768 INFO L125 PetriNetUnfolderBase]: For 100106/100106 co-relation queries the response was YES. [2024-06-27 18:17:44,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28911 conditions, 4016 events. 2152/4016 cut-off events. For 100106/100106 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 28358 event pairs, 250 based on Foata normal form. 2/3879 useless extension candidates. Maximal degree in co-relation 28774. Up to 2535 conditions per place. [2024-06-27 18:17:44,821 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 374 selfloop transitions, 113 changer transitions 0/495 dead transitions. [2024-06-27 18:17:44,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 495 transitions, 8184 flow [2024-06-27 18:17:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:17:44,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 18:17:44,823 INFO L175 Difference]: Start difference. First operand has 302 places, 457 transitions, 6741 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:17:44,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 495 transitions, 8184 flow [2024-06-27 18:17:45,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 495 transitions, 8058 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:45,311 INFO L231 Difference]: Finished difference. Result has 302 places, 457 transitions, 6846 flow [2024-06-27 18:17:45,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6615, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6846, PETRI_PLACES=302, PETRI_TRANSITIONS=457} [2024-06-27 18:17:45,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 260 predicate places. [2024-06-27 18:17:45,312 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 457 transitions, 6846 flow [2024-06-27 18:17:45,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:45,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:45,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:45,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:17:45,312 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:45,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1184965842, now seen corresponding path program 20 times [2024-06-27 18:17:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:45,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943216343] [2024-06-27 18:17:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:45,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:45,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:45,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943216343] [2024-06-27 18:17:45,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943216343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41644937] [2024-06-27 18:17:45,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:45,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:45,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:45,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:45,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:46,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:46,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 457 transitions, 6846 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:46,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:46,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:46,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:46,884 INFO L124 PetriNetUnfolderBase]: 2153/3941 cut-off events. [2024-06-27 18:17:46,885 INFO L125 PetriNetUnfolderBase]: For 98704/98704 co-relation queries the response was YES. [2024-06-27 18:17:46,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29133 conditions, 3941 events. 2153/3941 cut-off events. For 98704/98704 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27535 event pairs, 226 based on Foata normal form. 1/3821 useless extension candidates. Maximal degree in co-relation 28995. Up to 2284 conditions per place. [2024-06-27 18:17:46,931 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 281 selfloop transitions, 201 changer transitions 0/490 dead transitions. [2024-06-27 18:17:46,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 490 transitions, 8076 flow [2024-06-27 18:17:46,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 18:17:46,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 18:17:46,932 INFO L175 Difference]: Start difference. First operand has 302 places, 457 transitions, 6846 flow. Second operand 9 states and 170 transitions. [2024-06-27 18:17:46,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 490 transitions, 8076 flow [2024-06-27 18:17:47,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 490 transitions, 7853 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:47,377 INFO L231 Difference]: Finished difference. Result has 304 places, 459 transitions, 7092 flow [2024-06-27 18:17:47,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6623, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7092, PETRI_PLACES=304, PETRI_TRANSITIONS=459} [2024-06-27 18:17:47,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-27 18:17:47,378 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 459 transitions, 7092 flow [2024-06-27 18:17:47,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:47,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:47,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:47,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:17:47,379 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:47,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1498655493, now seen corresponding path program 14 times [2024-06-27 18:17:47,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:47,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15500800] [2024-06-27 18:17:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:48,036 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 18:17:48,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:48,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15500800] [2024-06-27 18:17:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15500800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:48,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:48,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016328870] [2024-06-27 18:17:48,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:48,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:48,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:48,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:48,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:48,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 459 transitions, 7092 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:48,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:48,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:48,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:49,063 INFO L124 PetriNetUnfolderBase]: 2149/3983 cut-off events. [2024-06-27 18:17:49,063 INFO L125 PetriNetUnfolderBase]: For 102193/102193 co-relation queries the response was YES. [2024-06-27 18:17:49,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29581 conditions, 3983 events. 2149/3983 cut-off events. For 102193/102193 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28362 event pairs, 291 based on Foata normal form. 2/3848 useless extension candidates. Maximal degree in co-relation 29442. Up to 3089 conditions per place. [2024-06-27 18:17:49,105 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 416 selfloop transitions, 69 changer transitions 0/493 dead transitions. [2024-06-27 18:17:49,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 493 transitions, 8278 flow [2024-06-27 18:17:49,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 18:17:49,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:17:49,106 INFO L175 Difference]: Start difference. First operand has 304 places, 459 transitions, 7092 flow. Second operand 9 states and 168 transitions. [2024-06-27 18:17:49,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 493 transitions, 8278 flow [2024-06-27 18:17:49,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 493 transitions, 7795 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:49,552 INFO L231 Difference]: Finished difference. Result has 306 places, 459 transitions, 6753 flow [2024-06-27 18:17:49,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6609, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6753, PETRI_PLACES=306, PETRI_TRANSITIONS=459} [2024-06-27 18:17:49,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-27 18:17:49,553 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 459 transitions, 6753 flow [2024-06-27 18:17:49,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:49,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:49,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:49,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:17:49,553 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:49,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1173914373, now seen corresponding path program 15 times [2024-06-27 18:17:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092759784] [2024-06-27 18:17:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:49,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:50,222 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 18:17:50,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:50,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092759784] [2024-06-27 18:17:50,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092759784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:50,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:50,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:50,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008603858] [2024-06-27 18:17:50,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:50,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:50,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:50,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:50,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:50,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:50,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 459 transitions, 6753 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:50,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:50,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:50,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:51,269 INFO L124 PetriNetUnfolderBase]: 2145/4120 cut-off events. [2024-06-27 18:17:51,270 INFO L125 PetriNetUnfolderBase]: For 98532/98532 co-relation queries the response was YES. [2024-06-27 18:17:51,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28603 conditions, 4120 events. 2145/4120 cut-off events. For 98532/98532 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 30189 event pairs, 608 based on Foata normal form. 2/3960 useless extension candidates. Maximal degree in co-relation 28463. Up to 3280 conditions per place. [2024-06-27 18:17:51,316 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 464 selfloop transitions, 18 changer transitions 0/490 dead transitions. [2024-06-27 18:17:51,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 490 transitions, 7909 flow [2024-06-27 18:17:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:17:51,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 18:17:51,317 INFO L175 Difference]: Start difference. First operand has 306 places, 459 transitions, 6753 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:17:51,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 490 transitions, 7909 flow [2024-06-27 18:17:51,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 490 transitions, 7738 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:51,814 INFO L231 Difference]: Finished difference. Result has 307 places, 459 transitions, 6624 flow [2024-06-27 18:17:51,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6582, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6624, PETRI_PLACES=307, PETRI_TRANSITIONS=459} [2024-06-27 18:17:51,815 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-27 18:17:51,815 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 459 transitions, 6624 flow [2024-06-27 18:17:51,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:51,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:51,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:51,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:17:51,816 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:51,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:51,816 INFO L85 PathProgramCache]: Analyzing trace with hash -733096096, now seen corresponding path program 1 times [2024-06-27 18:17:51,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:51,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223266032] [2024-06-27 18:17:51,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:51,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:51,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223266032] [2024-06-27 18:17:51,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223266032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:51,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:51,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:17:51,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156636678] [2024-06-27 18:17:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:51,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:17:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:17:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:17:51,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-27 18:17:51,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 459 transitions, 6624 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:51,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:51,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-27 18:17:51,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:52,880 INFO L124 PetriNetUnfolderBase]: 2313/4352 cut-off events. [2024-06-27 18:17:52,880 INFO L125 PetriNetUnfolderBase]: For 97550/98056 co-relation queries the response was YES. [2024-06-27 18:17:52,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30750 conditions, 4352 events. 2313/4352 cut-off events. For 97550/98056 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 31909 event pairs, 245 based on Foata normal form. 269/4447 useless extension candidates. Maximal degree in co-relation 30610. Up to 1257 conditions per place. [2024-06-27 18:17:52,931 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 250 selfloop transitions, 61 changer transitions 155/702 dead transitions. [2024-06-27 18:17:52,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 702 transitions, 10705 flow [2024-06-27 18:17:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:17:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:17:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:17:52,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-06-27 18:17:52,932 INFO L175 Difference]: Start difference. First operand has 307 places, 459 transitions, 6624 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:17:52,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 702 transitions, 10705 flow [2024-06-27 18:17:53,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 702 transitions, 10647 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:53,396 INFO L231 Difference]: Finished difference. Result has 311 places, 462 transitions, 6831 flow [2024-06-27 18:17:53,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6570, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6831, PETRI_PLACES=311, PETRI_TRANSITIONS=462} [2024-06-27 18:17:53,397 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2024-06-27 18:17:53,397 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 462 transitions, 6831 flow [2024-06-27 18:17:53,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:53,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:53,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:53,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:17:53,397 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:53,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash -181803652, now seen corresponding path program 1 times [2024-06-27 18:17:53,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925690201] [2024-06-27 18:17:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:53,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:54,317 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 18:17:54,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:54,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925690201] [2024-06-27 18:17:54,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925690201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:54,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:54,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610662683] [2024-06-27 18:17:54,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:54,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:54,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:54,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:54,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:54,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:54,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 462 transitions, 6831 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:54,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:54,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:54,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:55,525 INFO L124 PetriNetUnfolderBase]: 2104/3951 cut-off events. [2024-06-27 18:17:55,525 INFO L125 PetriNetUnfolderBase]: For 98322/98332 co-relation queries the response was YES. [2024-06-27 18:17:55,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29232 conditions, 3951 events. 2104/3951 cut-off events. For 98322/98332 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 28139 event pairs, 431 based on Foata normal form. 11/3938 useless extension candidates. Maximal degree in co-relation 29086. Up to 3059 conditions per place. [2024-06-27 18:17:55,573 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 374 selfloop transitions, 120 changer transitions 9/512 dead transitions. [2024-06-27 18:17:55,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 512 transitions, 8140 flow [2024-06-27 18:17:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:17:55,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-27 18:17:55,574 INFO L175 Difference]: Start difference. First operand has 311 places, 462 transitions, 6831 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:17:55,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 512 transitions, 8140 flow [2024-06-27 18:17:56,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 512 transitions, 8134 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:17:56,043 INFO L231 Difference]: Finished difference. Result has 318 places, 462 transitions, 7132 flow [2024-06-27 18:17:56,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6827, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7132, PETRI_PLACES=318, PETRI_TRANSITIONS=462} [2024-06-27 18:17:56,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2024-06-27 18:17:56,044 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 462 transitions, 7132 flow [2024-06-27 18:17:56,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:56,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:56,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:56,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:17:56,045 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:56,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:56,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1597357580, now seen corresponding path program 2 times [2024-06-27 18:17:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:56,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227682014] [2024-06-27 18:17:56,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:56,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227682014] [2024-06-27 18:17:56,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227682014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:56,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:56,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:56,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565586238] [2024-06-27 18:17:56,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:56,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:56,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:56,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:56,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:56,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 462 transitions, 7132 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:56,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:56,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:56,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:57,981 INFO L124 PetriNetUnfolderBase]: 2036/3771 cut-off events. [2024-06-27 18:17:57,981 INFO L125 PetriNetUnfolderBase]: For 102247/102257 co-relation queries the response was YES. [2024-06-27 18:17:58,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28618 conditions, 3771 events. 2036/3771 cut-off events. For 102247/102257 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26165 event pairs, 403 based on Foata normal form. 11/3757 useless extension candidates. Maximal degree in co-relation 28470. Up to 2959 conditions per place. [2024-06-27 18:17:58,023 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 371 selfloop transitions, 128 changer transitions 0/508 dead transitions. [2024-06-27 18:17:58,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 508 transitions, 8470 flow [2024-06-27 18:17:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:17:58,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 18:17:58,024 INFO L175 Difference]: Start difference. First operand has 318 places, 462 transitions, 7132 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:17:58,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 508 transitions, 8470 flow [2024-06-27 18:17:58,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 508 transitions, 8003 flow, removed 57 selfloop flow, removed 12 redundant places. [2024-06-27 18:17:58,488 INFO L231 Difference]: Finished difference. Result has 316 places, 466 transitions, 7074 flow [2024-06-27 18:17:58,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6723, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7074, PETRI_PLACES=316, PETRI_TRANSITIONS=466} [2024-06-27 18:17:58,488 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-27 18:17:58,488 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 466 transitions, 7074 flow [2024-06-27 18:17:58,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:58,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:58,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:58,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:17:58,489 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:58,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:58,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2040793770, now seen corresponding path program 1 times [2024-06-27 18:17:58,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:58,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649582278] [2024-06-27 18:17:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:58,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:59,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:59,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649582278] [2024-06-27 18:17:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649582278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:59,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:59,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:59,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385574885] [2024-06-27 18:17:59,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:59,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:59,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:59,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:59,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:59,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:59,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 466 transitions, 7074 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:59,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:59,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:59,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:00,147 INFO L124 PetriNetUnfolderBase]: 2080/3841 cut-off events. [2024-06-27 18:18:00,147 INFO L125 PetriNetUnfolderBase]: For 108739/108749 co-relation queries the response was YES. [2024-06-27 18:18:00,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28748 conditions, 3841 events. 2080/3841 cut-off events. For 108739/108749 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 26589 event pairs, 401 based on Foata normal form. 14/3733 useless extension candidates. Maximal degree in co-relation 28602. Up to 3040 conditions per place. [2024-06-27 18:18:00,191 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 412 selfloop transitions, 89 changer transitions 0/510 dead transitions. [2024-06-27 18:18:00,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 510 transitions, 8396 flow [2024-06-27 18:18:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:18:00,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-27 18:18:00,192 INFO L175 Difference]: Start difference. First operand has 316 places, 466 transitions, 7074 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:18:00,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 510 transitions, 8396 flow [2024-06-27 18:18:00,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 510 transitions, 8093 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:00,748 INFO L231 Difference]: Finished difference. Result has 318 places, 469 transitions, 7043 flow [2024-06-27 18:18:00,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6771, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7043, PETRI_PLACES=318, PETRI_TRANSITIONS=469} [2024-06-27 18:18:00,748 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2024-06-27 18:18:00,748 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 469 transitions, 7043 flow [2024-06-27 18:18:00,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:00,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:00,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:00,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:18:00,749 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:00,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:00,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2041977412, now seen corresponding path program 3 times [2024-06-27 18:18:00,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:00,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237488762] [2024-06-27 18:18:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:00,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237488762] [2024-06-27 18:18:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237488762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:01,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:01,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361304184] [2024-06-27 18:18:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:01,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:01,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:01,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:01,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:01,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 469 transitions, 7043 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:01,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:01,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:01,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:02,800 INFO L124 PetriNetUnfolderBase]: 2091/3862 cut-off events. [2024-06-27 18:18:02,800 INFO L125 PetriNetUnfolderBase]: For 106945/106953 co-relation queries the response was YES. [2024-06-27 18:18:02,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29043 conditions, 3862 events. 2091/3862 cut-off events. For 106945/106953 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 26860 event pairs, 419 based on Foata normal form. 9/3750 useless extension candidates. Maximal degree in co-relation 28896. Up to 3098 conditions per place. [2024-06-27 18:18:02,935 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 414 selfloop transitions, 88 changer transitions 0/511 dead transitions. [2024-06-27 18:18:02,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 511 transitions, 8349 flow [2024-06-27 18:18:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:18:02,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 18:18:02,936 INFO L175 Difference]: Start difference. First operand has 318 places, 469 transitions, 7043 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:18:02,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 511 transitions, 8349 flow [2024-06-27 18:18:03,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 511 transitions, 8137 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:03,437 INFO L231 Difference]: Finished difference. Result has 321 places, 471 transitions, 7090 flow [2024-06-27 18:18:03,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6831, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7090, PETRI_PLACES=321, PETRI_TRANSITIONS=471} [2024-06-27 18:18:03,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-27 18:18:03,438 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 471 transitions, 7090 flow [2024-06-27 18:18:03,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:03,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:03,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:03,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:18:03,438 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:03,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1032464120, now seen corresponding path program 4 times [2024-06-27 18:18:03,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:03,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474662452] [2024-06-27 18:18:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:03,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:04,458 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 18:18:04,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474662452] [2024-06-27 18:18:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474662452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:04,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:04,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486478038] [2024-06-27 18:18:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:04,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:04,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 471 transitions, 7090 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:04,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:04,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:04,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:05,649 INFO L124 PetriNetUnfolderBase]: 2129/3948 cut-off events. [2024-06-27 18:18:05,649 INFO L125 PetriNetUnfolderBase]: For 109748/109758 co-relation queries the response was YES. [2024-06-27 18:18:05,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29371 conditions, 3948 events. 2129/3948 cut-off events. For 109748/109758 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 27697 event pairs, 441 based on Foata normal form. 11/3837 useless extension candidates. Maximal degree in co-relation 29223. Up to 3099 conditions per place. [2024-06-27 18:18:05,697 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 383 selfloop transitions, 143 changer transitions 0/535 dead transitions. [2024-06-27 18:18:05,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 535 transitions, 8743 flow [2024-06-27 18:18:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:18:05,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 18:18:05,698 INFO L175 Difference]: Start difference. First operand has 321 places, 471 transitions, 7090 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:18:05,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 535 transitions, 8743 flow [2024-06-27 18:18:06,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 535 transitions, 8506 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:06,291 INFO L231 Difference]: Finished difference. Result has 326 places, 503 transitions, 7755 flow [2024-06-27 18:18:06,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6853, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7755, PETRI_PLACES=326, PETRI_TRANSITIONS=503} [2024-06-27 18:18:06,292 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-27 18:18:06,292 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 503 transitions, 7755 flow [2024-06-27 18:18:06,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:06,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:06,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:06,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:18:06,293 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:06,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1181301874, now seen corresponding path program 5 times [2024-06-27 18:18:06,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:06,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019098575] [2024-06-27 18:18:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:06,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:07,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019098575] [2024-06-27 18:18:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019098575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:07,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:07,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:07,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118779618] [2024-06-27 18:18:07,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:07,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:07,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:07,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 503 transitions, 7755 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:07,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:07,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:07,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:08,348 INFO L124 PetriNetUnfolderBase]: 2147/3978 cut-off events. [2024-06-27 18:18:08,348 INFO L125 PetriNetUnfolderBase]: For 113793/113803 co-relation queries the response was YES. [2024-06-27 18:18:08,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29878 conditions, 3978 events. 2147/3978 cut-off events. For 113793/113803 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 27910 event pairs, 436 based on Foata normal form. 11/3867 useless extension candidates. Maximal degree in co-relation 29726. Up to 3188 conditions per place. [2024-06-27 18:18:08,398 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 448 selfloop transitions, 88 changer transitions 0/545 dead transitions. [2024-06-27 18:18:08,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 545 transitions, 9135 flow [2024-06-27 18:18:08,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:18:08,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 18:18:08,399 INFO L175 Difference]: Start difference. First operand has 326 places, 503 transitions, 7755 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:18:08,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 545 transitions, 9135 flow [2024-06-27 18:18:08,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 545 transitions, 9005 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 18:18:08,988 INFO L231 Difference]: Finished difference. Result has 334 places, 507 transitions, 7908 flow [2024-06-27 18:18:08,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7625, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7908, PETRI_PLACES=334, PETRI_TRANSITIONS=507} [2024-06-27 18:18:08,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 292 predicate places. [2024-06-27 18:18:08,989 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 507 transitions, 7908 flow [2024-06-27 18:18:08,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:08,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:08,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:08,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:18:08,989 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:08,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1183088098, now seen corresponding path program 2 times [2024-06-27 18:18:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:08,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888183259] [2024-06-27 18:18:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:09,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:09,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888183259] [2024-06-27 18:18:09,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888183259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:09,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:09,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:09,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84872827] [2024-06-27 18:18:09,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:09,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:09,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:09,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:09,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 507 transitions, 7908 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:09,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:09,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:09,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:10,872 INFO L124 PetriNetUnfolderBase]: 2183/4035 cut-off events. [2024-06-27 18:18:10,872 INFO L125 PetriNetUnfolderBase]: For 119742/119752 co-relation queries the response was YES. [2024-06-27 18:18:10,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30530 conditions, 4035 events. 2183/4035 cut-off events. For 119742/119752 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 28352 event pairs, 435 based on Foata normal form. 12/3923 useless extension candidates. Maximal degree in co-relation 30376. Up to 3222 conditions per place. [2024-06-27 18:18:10,923 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 452 selfloop transitions, 89 changer transitions 0/550 dead transitions. [2024-06-27 18:18:10,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 550 transitions, 9306 flow [2024-06-27 18:18:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:10,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:18:10,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-27 18:18:10,924 INFO L175 Difference]: Start difference. First operand has 334 places, 507 transitions, 7908 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:18:10,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 550 transitions, 9306 flow [2024-06-27 18:18:11,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 550 transitions, 9078 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:11,545 INFO L231 Difference]: Finished difference. Result has 337 places, 512 transitions, 7976 flow [2024-06-27 18:18:11,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7680, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7976, PETRI_PLACES=337, PETRI_TRANSITIONS=512} [2024-06-27 18:18:11,546 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-06-27 18:18:11,546 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 512 transitions, 7976 flow [2024-06-27 18:18:11,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:11,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:11,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:11,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:18:11,546 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:11,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1346872812, now seen corresponding path program 3 times [2024-06-27 18:18:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054710655] [2024-06-27 18:18:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:11,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:12,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:12,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:12,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054710655] [2024-06-27 18:18:12,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054710655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:12,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:12,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:12,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82411005] [2024-06-27 18:18:12,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:12,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:12,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:12,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 512 transitions, 7976 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:12,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:12,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:12,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:13,421 INFO L124 PetriNetUnfolderBase]: 2283/4198 cut-off events. [2024-06-27 18:18:13,421 INFO L125 PetriNetUnfolderBase]: For 142314/142324 co-relation queries the response was YES. [2024-06-27 18:18:13,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32817 conditions, 4198 events. 2283/4198 cut-off events. For 142314/142324 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29539 event pairs, 354 based on Foata normal form. 12/4076 useless extension candidates. Maximal degree in co-relation 32662. Up to 2966 conditions per place. [2024-06-27 18:18:13,474 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 434 selfloop transitions, 123 changer transitions 0/566 dead transitions. [2024-06-27 18:18:13,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 566 transitions, 9874 flow [2024-06-27 18:18:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 18:18:13,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:18:13,475 INFO L175 Difference]: Start difference. First operand has 337 places, 512 transitions, 7976 flow. Second operand 11 states and 209 transitions. [2024-06-27 18:18:13,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 566 transitions, 9874 flow [2024-06-27 18:18:14,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 566 transitions, 9682 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:14,137 INFO L231 Difference]: Finished difference. Result has 342 places, 520 transitions, 8321 flow [2024-06-27 18:18:14,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7784, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8321, PETRI_PLACES=342, PETRI_TRANSITIONS=520} [2024-06-27 18:18:14,138 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-06-27 18:18:14,138 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 520 transitions, 8321 flow [2024-06-27 18:18:14,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:14,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:14,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:14,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:18:14,138 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:14,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1383575014, now seen corresponding path program 6 times [2024-06-27 18:18:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239943876] [2024-06-27 18:18:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:15,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:15,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239943876] [2024-06-27 18:18:15,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239943876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:15,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:15,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167984760] [2024-06-27 18:18:15,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:15,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:15,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:15,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 520 transitions, 8321 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:15,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:15,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:15,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:16,389 INFO L124 PetriNetUnfolderBase]: 2307/4280 cut-off events. [2024-06-27 18:18:16,389 INFO L125 PetriNetUnfolderBase]: For 153372/153382 co-relation queries the response was YES. [2024-06-27 18:18:16,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33963 conditions, 4280 events. 2307/4280 cut-off events. For 153372/153382 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 30458 event pairs, 392 based on Foata normal form. 11/4153 useless extension candidates. Maximal degree in co-relation 33806. Up to 3203 conditions per place. [2024-06-27 18:18:16,441 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 439 selfloop transitions, 117 changer transitions 0/565 dead transitions. [2024-06-27 18:18:16,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 565 transitions, 9969 flow [2024-06-27 18:18:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:18:16,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-27 18:18:16,443 INFO L175 Difference]: Start difference. First operand has 342 places, 520 transitions, 8321 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:18:16,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 565 transitions, 9969 flow [2024-06-27 18:18:17,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 565 transitions, 9771 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:17,153 INFO L231 Difference]: Finished difference. Result has 347 places, 524 transitions, 8543 flow [2024-06-27 18:18:17,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8123, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8543, PETRI_PLACES=347, PETRI_TRANSITIONS=524} [2024-06-27 18:18:17,154 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 305 predicate places. [2024-06-27 18:18:17,154 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 524 transitions, 8543 flow [2024-06-27 18:18:17,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:17,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:17,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:17,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:18:17,154 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:17,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1383812412, now seen corresponding path program 4 times [2024-06-27 18:18:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:17,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460572496] [2024-06-27 18:18:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:17,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:17,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460572496] [2024-06-27 18:18:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460572496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:17,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:17,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:17,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194451957] [2024-06-27 18:18:17,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:17,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:17,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:17,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:17,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:17,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:17,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 524 transitions, 8543 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:17,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:17,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:17,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:18,948 INFO L124 PetriNetUnfolderBase]: 2303/4227 cut-off events. [2024-06-27 18:18:18,949 INFO L125 PetriNetUnfolderBase]: For 149293/149303 co-relation queries the response was YES. [2024-06-27 18:18:18,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33473 conditions, 4227 events. 2303/4227 cut-off events. For 149293/149303 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 29737 event pairs, 339 based on Foata normal form. 12/4113 useless extension candidates. Maximal degree in co-relation 33314. Up to 3000 conditions per place. [2024-06-27 18:18:19,001 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 429 selfloop transitions, 130 changer transitions 0/568 dead transitions. [2024-06-27 18:18:19,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 568 transitions, 10061 flow [2024-06-27 18:18:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:18:19,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-27 18:18:19,002 INFO L175 Difference]: Start difference. First operand has 347 places, 524 transitions, 8543 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:18:19,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 568 transitions, 10061 flow [2024-06-27 18:18:19,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 568 transitions, 9827 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:19,762 INFO L231 Difference]: Finished difference. Result has 351 places, 524 transitions, 8576 flow [2024-06-27 18:18:19,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8309, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8576, PETRI_PLACES=351, PETRI_TRANSITIONS=524} [2024-06-27 18:18:19,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2024-06-27 18:18:19,763 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 524 transitions, 8576 flow [2024-06-27 18:18:19,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:19,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:19,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:19,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:18:19,763 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:19,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2073570670, now seen corresponding path program 7 times [2024-06-27 18:18:19,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:19,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856776020] [2024-06-27 18:18:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:19,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:20,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:20,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856776020] [2024-06-27 18:18:20,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856776020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:20,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:20,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:20,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512047089] [2024-06-27 18:18:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:20,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:20,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:20,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:20,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 524 transitions, 8576 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:20,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:20,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:20,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:21,942 INFO L124 PetriNetUnfolderBase]: 2301/4234 cut-off events. [2024-06-27 18:18:21,942 INFO L125 PetriNetUnfolderBase]: For 145484/145497 co-relation queries the response was YES. [2024-06-27 18:18:21,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33481 conditions, 4234 events. 2301/4234 cut-off events. For 145484/145497 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 29819 event pairs, 449 based on Foata normal form. 14/4117 useless extension candidates. Maximal degree in co-relation 33320. Up to 3363 conditions per place. [2024-06-27 18:18:21,988 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 462 selfloop transitions, 95 changer transitions 0/566 dead transitions. [2024-06-27 18:18:21,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 566 transitions, 9922 flow [2024-06-27 18:18:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:18:21,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-27 18:18:21,989 INFO L175 Difference]: Start difference. First operand has 351 places, 524 transitions, 8576 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:18:21,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 566 transitions, 9922 flow [2024-06-27 18:18:22,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 566 transitions, 9621 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:22,756 INFO L231 Difference]: Finished difference. Result has 353 places, 524 transitions, 8471 flow [2024-06-27 18:18:22,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8275, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8471, PETRI_PLACES=353, PETRI_TRANSITIONS=524} [2024-06-27 18:18:22,757 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-27 18:18:22,757 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 524 transitions, 8471 flow [2024-06-27 18:18:22,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:22,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:22,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:22,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:18:22,758 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:22,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:22,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2073562982, now seen corresponding path program 5 times [2024-06-27 18:18:22,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:22,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553111365] [2024-06-27 18:18:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:22,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553111365] [2024-06-27 18:18:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553111365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:23,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826929580] [2024-06-27 18:18:23,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:23,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:23,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:23,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 524 transitions, 8471 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:23,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:23,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:23,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:24,893 INFO L124 PetriNetUnfolderBase]: 2297/4224 cut-off events. [2024-06-27 18:18:24,893 INFO L125 PetriNetUnfolderBase]: For 141373/141386 co-relation queries the response was YES. [2024-06-27 18:18:24,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32912 conditions, 4224 events. 2297/4224 cut-off events. For 141373/141386 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 29732 event pairs, 449 based on Foata normal form. 15/4107 useless extension candidates. Maximal degree in co-relation 32750. Up to 3342 conditions per place. [2024-06-27 18:18:24,960 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 464 selfloop transitions, 96 changer transitions 0/569 dead transitions. [2024-06-27 18:18:24,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 569 transitions, 9909 flow [2024-06-27 18:18:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:24,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:18:24,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-27 18:18:24,961 INFO L175 Difference]: Start difference. First operand has 353 places, 524 transitions, 8471 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:18:24,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 569 transitions, 9909 flow [2024-06-27 18:18:26,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 569 transitions, 9662 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 18:18:26,019 INFO L231 Difference]: Finished difference. Result has 354 places, 527 transitions, 8515 flow [2024-06-27 18:18:26,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8224, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8515, PETRI_PLACES=354, PETRI_TRANSITIONS=527} [2024-06-27 18:18:26,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-06-27 18:18:26,020 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 527 transitions, 8515 flow [2024-06-27 18:18:26,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:26,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:26,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:26,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:18:26,020 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:26,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash -841065182, now seen corresponding path program 8 times [2024-06-27 18:18:26,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:26,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735995485] [2024-06-27 18:18:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:26,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:26,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:26,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735995485] [2024-06-27 18:18:26,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735995485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:26,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:26,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:26,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020426120] [2024-06-27 18:18:26,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:26,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:26,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:27,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:27,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 527 transitions, 8515 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:27,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:27,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:28,487 INFO L124 PetriNetUnfolderBase]: 2334/4306 cut-off events. [2024-06-27 18:18:28,488 INFO L125 PetriNetUnfolderBase]: For 144146/144156 co-relation queries the response was YES. [2024-06-27 18:18:28,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33629 conditions, 4306 events. 2334/4306 cut-off events. For 144146/144156 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 30510 event pairs, 447 based on Foata normal form. 11/4181 useless extension candidates. Maximal degree in co-relation 33466. Up to 3468 conditions per place. [2024-06-27 18:18:28,545 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 440 selfloop transitions, 126 changer transitions 0/575 dead transitions. [2024-06-27 18:18:28,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 575 transitions, 10126 flow [2024-06-27 18:18:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:28,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:18:28,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 18:18:28,546 INFO L175 Difference]: Start difference. First operand has 354 places, 527 transitions, 8515 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:18:28,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 575 transitions, 10126 flow [2024-06-27 18:18:29,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 575 transitions, 9878 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:29,497 INFO L231 Difference]: Finished difference. Result has 358 places, 545 transitions, 8957 flow [2024-06-27 18:18:29,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8267, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8957, PETRI_PLACES=358, PETRI_TRANSITIONS=545} [2024-06-27 18:18:29,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-27 18:18:29,497 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 545 transitions, 8957 flow [2024-06-27 18:18:29,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:29,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:29,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:29,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:18:29,498 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:29,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:29,498 INFO L85 PathProgramCache]: Analyzing trace with hash -837310772, now seen corresponding path program 9 times [2024-06-27 18:18:29,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:29,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119486495] [2024-06-27 18:18:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:29,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:30,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:30,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119486495] [2024-06-27 18:18:30,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119486495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:30,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:30,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:30,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349408671] [2024-06-27 18:18:30,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:30,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:30,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:30,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:30,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:30,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 545 transitions, 8957 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:30,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:30,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:30,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:31,742 INFO L124 PetriNetUnfolderBase]: 2359/4357 cut-off events. [2024-06-27 18:18:31,742 INFO L125 PetriNetUnfolderBase]: For 149300/149310 co-relation queries the response was YES. [2024-06-27 18:18:31,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34104 conditions, 4357 events. 2359/4357 cut-off events. For 149300/149310 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 31013 event pairs, 440 based on Foata normal form. 11/4229 useless extension candidates. Maximal degree in co-relation 33939. Up to 3516 conditions per place. [2024-06-27 18:18:31,797 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 491 selfloop transitions, 88 changer transitions 0/588 dead transitions. [2024-06-27 18:18:31,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 588 transitions, 10459 flow [2024-06-27 18:18:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:18:31,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 18:18:31,798 INFO L175 Difference]: Start difference. First operand has 358 places, 545 transitions, 8957 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:18:31,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 588 transitions, 10459 flow [2024-06-27 18:18:32,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 588 transitions, 10213 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:32,676 INFO L231 Difference]: Finished difference. Result has 362 places, 551 transitions, 9038 flow [2024-06-27 18:18:32,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8711, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9038, PETRI_PLACES=362, PETRI_TRANSITIONS=551} [2024-06-27 18:18:32,677 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 320 predicate places. [2024-06-27 18:18:32,677 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 551 transitions, 9038 flow [2024-06-27 18:18:32,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:32,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:32,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:32,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:18:32,677 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:32,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash -837310524, now seen corresponding path program 6 times [2024-06-27 18:18:32,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:32,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071846985] [2024-06-27 18:18:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:33,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:33,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071846985] [2024-06-27 18:18:33,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071846985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:33,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:33,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:33,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672351764] [2024-06-27 18:18:33,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:33,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:33,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:33,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:33,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:33,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:33,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 551 transitions, 9038 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:33,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:33,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:33,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:34,727 INFO L124 PetriNetUnfolderBase]: 2459/4510 cut-off events. [2024-06-27 18:18:34,727 INFO L125 PetriNetUnfolderBase]: For 165572/165582 co-relation queries the response was YES. [2024-06-27 18:18:34,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35766 conditions, 4510 events. 2459/4510 cut-off events. For 165572/165582 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 32127 event pairs, 441 based on Foata normal form. 14/4385 useless extension candidates. Maximal degree in co-relation 35599. Up to 3597 conditions per place. [2024-06-27 18:18:34,788 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 499 selfloop transitions, 93 changer transitions 0/601 dead transitions. [2024-06-27 18:18:34,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 601 transitions, 10718 flow [2024-06-27 18:18:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:18:34,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-27 18:18:34,789 INFO L175 Difference]: Start difference. First operand has 362 places, 551 transitions, 9038 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:18:34,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 601 transitions, 10718 flow [2024-06-27 18:18:35,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 601 transitions, 10484 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:35,599 INFO L231 Difference]: Finished difference. Result has 365 places, 562 transitions, 9288 flow [2024-06-27 18:18:35,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8804, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9288, PETRI_PLACES=365, PETRI_TRANSITIONS=562} [2024-06-27 18:18:35,599 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-06-27 18:18:35,599 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 562 transitions, 9288 flow [2024-06-27 18:18:35,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:35,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:35,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:35,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:18:35,600 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:35,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash -692295872, now seen corresponding path program 10 times [2024-06-27 18:18:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:35,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29621627] [2024-06-27 18:18:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:36,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:36,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29621627] [2024-06-27 18:18:36,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29621627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:36,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:36,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:36,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462123040] [2024-06-27 18:18:36,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:36,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:36,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:36,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:36,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:36,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:36,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 562 transitions, 9288 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:36,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:36,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:36,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:37,991 INFO L124 PetriNetUnfolderBase]: 2497/4608 cut-off events. [2024-06-27 18:18:37,991 INFO L125 PetriNetUnfolderBase]: For 170242/170255 co-relation queries the response was YES. [2024-06-27 18:18:38,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36874 conditions, 4608 events. 2497/4608 cut-off events. For 170242/170255 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33138 event pairs, 437 based on Foata normal form. 14/4474 useless extension candidates. Maximal degree in co-relation 36706. Up to 3574 conditions per place. [2024-06-27 18:18:38,051 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 491 selfloop transitions, 110 changer transitions 0/610 dead transitions. [2024-06-27 18:18:38,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 610 transitions, 11118 flow [2024-06-27 18:18:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:18:38,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-27 18:18:38,052 INFO L175 Difference]: Start difference. First operand has 365 places, 562 transitions, 9288 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:18:38,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 610 transitions, 11118 flow [2024-06-27 18:18:38,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 610 transitions, 10804 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:38,887 INFO L231 Difference]: Finished difference. Result has 368 places, 570 transitions, 9476 flow [2024-06-27 18:18:38,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8974, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9476, PETRI_PLACES=368, PETRI_TRANSITIONS=570} [2024-06-27 18:18:38,887 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-27 18:18:38,887 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 570 transitions, 9476 flow [2024-06-27 18:18:38,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:38,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:38,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:38,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:18:38,888 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:38,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1747559386, now seen corresponding path program 7 times [2024-06-27 18:18:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:38,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635376231] [2024-06-27 18:18:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:39,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:39,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635376231] [2024-06-27 18:18:39,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635376231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:39,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:39,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:39,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188302056] [2024-06-27 18:18:39,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:39,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:39,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:39,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:39,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:39,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:39,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 570 transitions, 9476 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:39,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:39,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:39,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:41,050 INFO L124 PetriNetUnfolderBase]: 2673/4856 cut-off events. [2024-06-27 18:18:41,050 INFO L125 PetriNetUnfolderBase]: For 204620/204633 co-relation queries the response was YES. [2024-06-27 18:18:41,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40029 conditions, 4856 events. 2673/4856 cut-off events. For 204620/204633 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 34710 event pairs, 438 based on Foata normal form. 15/4726 useless extension candidates. Maximal degree in co-relation 39859. Up to 3608 conditions per place. [2024-06-27 18:18:41,123 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 500 selfloop transitions, 127 changer transitions 0/636 dead transitions. [2024-06-27 18:18:41,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 636 transitions, 11811 flow [2024-06-27 18:18:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:18:41,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-27 18:18:41,124 INFO L175 Difference]: Start difference. First operand has 368 places, 570 transitions, 9476 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:18:41,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 636 transitions, 11811 flow [2024-06-27 18:18:42,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 636 transitions, 11607 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:42,042 INFO L231 Difference]: Finished difference. Result has 374 places, 591 transitions, 10132 flow [2024-06-27 18:18:42,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9272, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10132, PETRI_PLACES=374, PETRI_TRANSITIONS=591} [2024-06-27 18:18:42,042 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-06-27 18:18:42,042 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 591 transitions, 10132 flow [2024-06-27 18:18:42,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:42,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:42,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:42,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:18:42,043 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:42,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:42,044 INFO L85 PathProgramCache]: Analyzing trace with hash -692287254, now seen corresponding path program 8 times [2024-06-27 18:18:42,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:42,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360645636] [2024-06-27 18:18:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:42,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:42,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360645636] [2024-06-27 18:18:42,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360645636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:42,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:42,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:42,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262230471] [2024-06-27 18:18:42,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:42,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:42,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:42,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:42,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 591 transitions, 10132 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:42,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:42,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:42,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:44,623 INFO L124 PetriNetUnfolderBase]: 2670/4852 cut-off events. [2024-06-27 18:18:44,623 INFO L125 PetriNetUnfolderBase]: For 203036/203049 co-relation queries the response was YES. [2024-06-27 18:18:44,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40594 conditions, 4852 events. 2670/4852 cut-off events. For 203036/203049 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 34760 event pairs, 417 based on Foata normal form. 15/4726 useless extension candidates. Maximal degree in co-relation 40420. Up to 3607 conditions per place. [2024-06-27 18:18:44,694 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 493 selfloop transitions, 132 changer transitions 0/634 dead transitions. [2024-06-27 18:18:44,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 634 transitions, 11788 flow [2024-06-27 18:18:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 18:18:44,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-27 18:18:44,695 INFO L175 Difference]: Start difference. First operand has 374 places, 591 transitions, 10132 flow. Second operand 11 states and 208 transitions. [2024-06-27 18:18:44,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 634 transitions, 11788 flow [2024-06-27 18:18:45,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 634 transitions, 11578 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:45,931 INFO L231 Difference]: Finished difference. Result has 380 places, 591 transitions, 10196 flow [2024-06-27 18:18:45,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9922, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10196, PETRI_PLACES=380, PETRI_TRANSITIONS=591} [2024-06-27 18:18:45,932 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-27 18:18:45,932 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 591 transitions, 10196 flow [2024-06-27 18:18:45,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:45,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:45,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:18:45,932 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:45,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 152684508, now seen corresponding path program 1 times [2024-06-27 18:18:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207099565] [2024-06-27 18:18:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:46,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:46,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207099565] [2024-06-27 18:18:46,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207099565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:46,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:46,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746838248] [2024-06-27 18:18:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:46,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:46,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:46,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:46,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 591 transitions, 10196 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:46,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:46,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:46,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:48,093 INFO L124 PetriNetUnfolderBase]: 2667/4877 cut-off events. [2024-06-27 18:18:48,093 INFO L125 PetriNetUnfolderBase]: For 197148/197158 co-relation queries the response was YES. [2024-06-27 18:18:48,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40411 conditions, 4877 events. 2667/4877 cut-off events. For 197148/197158 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 35156 event pairs, 620 based on Foata normal form. 11/4741 useless extension candidates. Maximal degree in co-relation 40235. Up to 4084 conditions per place. [2024-06-27 18:18:48,160 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 563 selfloop transitions, 53 changer transitions 0/625 dead transitions. [2024-06-27 18:18:48,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 625 transitions, 11600 flow [2024-06-27 18:18:48,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:48,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:18:48,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 18:18:48,161 INFO L175 Difference]: Start difference. First operand has 380 places, 591 transitions, 10196 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:18:48,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 625 transitions, 11600 flow [2024-06-27 18:18:49,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 625 transitions, 11354 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:49,295 INFO L231 Difference]: Finished difference. Result has 382 places, 591 transitions, 10063 flow [2024-06-27 18:18:49,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9950, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10063, PETRI_PLACES=382, PETRI_TRANSITIONS=591} [2024-06-27 18:18:49,296 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-06-27 18:18:49,296 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 591 transitions, 10063 flow [2024-06-27 18:18:49,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:49,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:49,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:49,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:18:49,297 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:49,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash 152444940, now seen corresponding path program 11 times [2024-06-27 18:18:49,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:49,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881704823] [2024-06-27 18:18:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:49,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:50,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:50,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881704823] [2024-06-27 18:18:50,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881704823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:50,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:50,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:50,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971860633] [2024-06-27 18:18:50,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:50,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:50,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:50,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:50,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:50,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 591 transitions, 10063 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:50,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:50,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:50,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:51,799 INFO L124 PetriNetUnfolderBase]: 2665/4861 cut-off events. [2024-06-27 18:18:51,799 INFO L125 PetriNetUnfolderBase]: For 193513/193526 co-relation queries the response was YES. [2024-06-27 18:18:51,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39865 conditions, 4861 events. 2665/4861 cut-off events. For 193513/193526 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34928 event pairs, 518 based on Foata normal form. 14/4724 useless extension candidates. Maximal degree in co-relation 39688. Up to 3961 conditions per place. [2024-06-27 18:18:51,872 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 533 selfloop transitions, 90 changer transitions 0/632 dead transitions. [2024-06-27 18:18:51,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 632 transitions, 11537 flow [2024-06-27 18:18:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:18:51,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-27 18:18:51,873 INFO L175 Difference]: Start difference. First operand has 382 places, 591 transitions, 10063 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:18:51,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 632 transitions, 11537 flow [2024-06-27 18:18:53,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 632 transitions, 11377 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 18:18:53,196 INFO L231 Difference]: Finished difference. Result has 387 places, 591 transitions, 10091 flow [2024-06-27 18:18:53,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9903, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10091, PETRI_PLACES=387, PETRI_TRANSITIONS=591} [2024-06-27 18:18:53,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 345 predicate places. [2024-06-27 18:18:53,197 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 591 transitions, 10091 flow [2024-06-27 18:18:53,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:53,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:53,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:53,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:18:53,197 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:53,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash 152445188, now seen corresponding path program 9 times [2024-06-27 18:18:53,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:53,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861743797] [2024-06-27 18:18:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:53,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:53,837 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 18:18:53,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:53,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861743797] [2024-06-27 18:18:53,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861743797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:53,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:53,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763349726] [2024-06-27 18:18:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:53,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:53,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:53,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:53,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 591 transitions, 10091 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:53,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:53,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:53,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:55,534 INFO L124 PetriNetUnfolderBase]: 2661/4857 cut-off events. [2024-06-27 18:18:55,535 INFO L125 PetriNetUnfolderBase]: For 191149/191162 co-relation queries the response was YES. [2024-06-27 18:18:55,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39566 conditions, 4857 events. 2661/4857 cut-off events. For 191149/191162 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 34812 event pairs, 506 based on Foata normal form. 15/4723 useless extension candidates. Maximal degree in co-relation 39388. Up to 3937 conditions per place. [2024-06-27 18:18:55,600 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 535 selfloop transitions, 92 changer transitions 0/636 dead transitions. [2024-06-27 18:18:55,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 636 transitions, 11675 flow [2024-06-27 18:18:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:55,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-27 18:18:55,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-27 18:18:55,601 INFO L175 Difference]: Start difference. First operand has 387 places, 591 transitions, 10091 flow. Second operand 11 states and 203 transitions. [2024-06-27 18:18:55,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 636 transitions, 11675 flow [2024-06-27 18:18:56,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 636 transitions, 11441 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 18:18:56,715 INFO L231 Difference]: Finished difference. Result has 388 places, 595 transitions, 10161 flow [2024-06-27 18:18:56,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9857, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10161, PETRI_PLACES=388, PETRI_TRANSITIONS=595} [2024-06-27 18:18:56,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-27 18:18:56,715 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 595 transitions, 10161 flow [2024-06-27 18:18:56,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:56,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:56,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:56,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:18:56,716 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:56,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1969212796, now seen corresponding path program 10 times [2024-06-27 18:18:56,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:56,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258292392] [2024-06-27 18:18:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:56,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:57,432 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 18:18:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258292392] [2024-06-27 18:18:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258292392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:57,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147008457] [2024-06-27 18:18:57,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:57,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:57,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:18:57,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 595 transitions, 10161 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:18:57,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:57,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:18:57,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:59,118 INFO L124 PetriNetUnfolderBase]: 2735/4945 cut-off events. [2024-06-27 18:18:59,118 INFO L125 PetriNetUnfolderBase]: For 215743/215752 co-relation queries the response was YES. [2024-06-27 18:18:59,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41579 conditions, 4945 events. 2735/4945 cut-off events. For 215743/215752 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 35335 event pairs, 498 based on Foata normal form. 11/4811 useless extension candidates. Maximal degree in co-relation 41400. Up to 3816 conditions per place. [2024-06-27 18:18:59,186 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 520 selfloop transitions, 117 changer transitions 0/646 dead transitions. [2024-06-27 18:18:59,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 646 transitions, 12107 flow [2024-06-27 18:18:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 18:18:59,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:18:59,187 INFO L175 Difference]: Start difference. First operand has 388 places, 595 transitions, 10161 flow. Second operand 11 states and 209 transitions. [2024-06-27 18:18:59,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 646 transitions, 12107 flow [2024-06-27 18:19:00,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 646 transitions, 11857 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:00,565 INFO L231 Difference]: Finished difference. Result has 391 places, 600 transitions, 10357 flow [2024-06-27 18:19:00,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9911, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10357, PETRI_PLACES=391, PETRI_TRANSITIONS=600} [2024-06-27 18:19:00,566 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-27 18:19:00,566 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 600 transitions, 10357 flow [2024-06-27 18:19:00,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:00,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:00,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:19:00,566 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:00,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 387629300, now seen corresponding path program 11 times [2024-06-27 18:19:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310375047] [2024-06-27 18:19:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:01,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:01,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310375047] [2024-06-27 18:19:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310375047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:01,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:01,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:01,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377845609] [2024-06-27 18:19:01,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:01,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:01,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:01,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:01,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 600 transitions, 10357 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:01,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:01,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:03,064 INFO L124 PetriNetUnfolderBase]: 2757/4979 cut-off events. [2024-06-27 18:19:03,064 INFO L125 PetriNetUnfolderBase]: For 223663/223672 co-relation queries the response was YES. [2024-06-27 18:19:03,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42221 conditions, 4979 events. 2757/4979 cut-off events. For 223663/223672 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 35603 event pairs, 504 based on Foata normal form. 11/4843 useless extension candidates. Maximal degree in co-relation 42040. Up to 3834 conditions per place. [2024-06-27 18:19:03,139 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 523 selfloop transitions, 117 changer transitions 0/649 dead transitions. [2024-06-27 18:19:03,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 649 transitions, 12217 flow [2024-06-27 18:19:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:19:03,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-27 18:19:03,142 INFO L175 Difference]: Start difference. First operand has 391 places, 600 transitions, 10357 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:19:03,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 649 transitions, 12217 flow [2024-06-27 18:19:04,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 649 transitions, 11969 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:04,537 INFO L231 Difference]: Finished difference. Result has 395 places, 602 transitions, 10419 flow [2024-06-27 18:19:04,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10127, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10419, PETRI_PLACES=395, PETRI_TRANSITIONS=602} [2024-06-27 18:19:04,538 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-06-27 18:19:04,539 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 602 transitions, 10419 flow [2024-06-27 18:19:04,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:04,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:04,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:04,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:19:04,539 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:04,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash 395672870, now seen corresponding path program 12 times [2024-06-27 18:19:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:04,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158375096] [2024-06-27 18:19:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:04,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158375096] [2024-06-27 18:19:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158375096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:05,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:05,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017367992] [2024-06-27 18:19:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:05,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:05,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:05,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 602 transitions, 10419 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:05,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:05,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:05,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:06,838 INFO L124 PetriNetUnfolderBase]: 2781/5097 cut-off events. [2024-06-27 18:19:06,838 INFO L125 PetriNetUnfolderBase]: For 222460/222467 co-relation queries the response was YES. [2024-06-27 18:19:06,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42731 conditions, 5097 events. 2781/5097 cut-off events. For 222460/222467 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 36854 event pairs, 413 based on Foata normal form. 8/4934 useless extension candidates. Maximal degree in co-relation 42548. Up to 3455 conditions per place. [2024-06-27 18:19:06,910 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 502 selfloop transitions, 160 changer transitions 0/671 dead transitions. [2024-06-27 18:19:06,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 671 transitions, 12800 flow [2024-06-27 18:19:06,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-27 18:19:06,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:19:06,911 INFO L175 Difference]: Start difference. First operand has 395 places, 602 transitions, 10419 flow. Second operand 12 states and 224 transitions. [2024-06-27 18:19:06,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 671 transitions, 12800 flow [2024-06-27 18:19:08,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 671 transitions, 12520 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:08,316 INFO L231 Difference]: Finished difference. Result has 401 places, 621 transitions, 10998 flow [2024-06-27 18:19:08,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10166, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10998, PETRI_PLACES=401, PETRI_TRANSITIONS=621} [2024-06-27 18:19:08,316 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-27 18:19:08,316 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 621 transitions, 10998 flow [2024-06-27 18:19:08,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:08,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:08,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:08,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:19:08,317 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:08,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 387629052, now seen corresponding path program 12 times [2024-06-27 18:19:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420463031] [2024-06-27 18:19:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:09,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:09,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420463031] [2024-06-27 18:19:09,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420463031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:09,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:09,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56434496] [2024-06-27 18:19:09,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:09,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:09,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 621 transitions, 10998 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:09,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:09,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:09,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:10,929 INFO L124 PetriNetUnfolderBase]: 2805/5084 cut-off events. [2024-06-27 18:19:10,929 INFO L125 PetriNetUnfolderBase]: For 242985/242994 co-relation queries the response was YES. [2024-06-27 18:19:10,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44465 conditions, 5084 events. 2805/5084 cut-off events. For 242985/242994 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36610 event pairs, 521 based on Foata normal form. 10/4937 useless extension candidates. Maximal degree in co-relation 44279. Up to 4009 conditions per place. [2024-06-27 18:19:11,000 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 547 selfloop transitions, 113 changer transitions 0/669 dead transitions. [2024-06-27 18:19:11,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 669 transitions, 13002 flow [2024-06-27 18:19:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:19:11,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-27 18:19:11,001 INFO L175 Difference]: Start difference. First operand has 401 places, 621 transitions, 10998 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:19:11,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 669 transitions, 13002 flow [2024-06-27 18:19:12,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 669 transitions, 12807 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:12,114 INFO L231 Difference]: Finished difference. Result has 405 places, 625 transitions, 11259 flow [2024-06-27 18:19:12,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10803, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11259, PETRI_PLACES=405, PETRI_TRANSITIONS=625} [2024-06-27 18:19:12,114 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-27 18:19:12,115 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 625 transitions, 11259 flow [2024-06-27 18:19:12,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:12,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:12,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:12,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:19:12,115 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:12,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash 387398412, now seen corresponding path program 13 times [2024-06-27 18:19:12,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538734084] [2024-06-27 18:19:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:12,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:12,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538734084] [2024-06-27 18:19:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538734084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:12,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:12,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708007634] [2024-06-27 18:19:12,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:12,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:12,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:12,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:13,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:13,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 625 transitions, 11259 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:13,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:13,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:13,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:14,878 INFO L124 PetriNetUnfolderBase]: 2803/5080 cut-off events. [2024-06-27 18:19:14,879 INFO L125 PetriNetUnfolderBase]: For 242517/242526 co-relation queries the response was YES. [2024-06-27 18:19:14,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44504 conditions, 5080 events. 2803/5080 cut-off events. For 242517/242526 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 36558 event pairs, 534 based on Foata normal form. 10/4933 useless extension candidates. Maximal degree in co-relation 44316. Up to 4049 conditions per place. [2024-06-27 18:19:14,959 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 552 selfloop transitions, 106 changer transitions 0/667 dead transitions. [2024-06-27 18:19:14,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 667 transitions, 12861 flow [2024-06-27 18:19:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:19:14,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-27 18:19:14,961 INFO L175 Difference]: Start difference. First operand has 405 places, 625 transitions, 11259 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:19:14,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 667 transitions, 12861 flow [2024-06-27 18:19:16,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 667 transitions, 12532 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:16,544 INFO L231 Difference]: Finished difference. Result has 409 places, 625 transitions, 11148 flow [2024-06-27 18:19:16,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10930, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11148, PETRI_PLACES=409, PETRI_TRANSITIONS=625} [2024-06-27 18:19:16,544 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-06-27 18:19:16,544 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 625 transitions, 11148 flow [2024-06-27 18:19:16,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:16,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:16,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:16,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:19:16,545 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:16,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash 395681240, now seen corresponding path program 13 times [2024-06-27 18:19:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:16,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065633099] [2024-06-27 18:19:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:16,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:17,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:17,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065633099] [2024-06-27 18:19:17,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065633099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:17,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:17,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:17,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030203401] [2024-06-27 18:19:17,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:17,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:17,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:17,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:17,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:17,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 625 transitions, 11148 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:17,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:17,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:17,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:19,139 INFO L124 PetriNetUnfolderBase]: 2814/5166 cut-off events. [2024-06-27 18:19:19,139 INFO L125 PetriNetUnfolderBase]: For 235926/235933 co-relation queries the response was YES. [2024-06-27 18:19:19,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44557 conditions, 5166 events. 2814/5166 cut-off events. For 235926/235933 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 37493 event pairs, 322 based on Foata normal form. 8/5001 useless extension candidates. Maximal degree in co-relation 44367. Up to 3416 conditions per place. [2024-06-27 18:19:19,210 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 493 selfloop transitions, 174 changer transitions 0/676 dead transitions. [2024-06-27 18:19:19,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 676 transitions, 13230 flow [2024-06-27 18:19:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 18:19:19,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-27 18:19:19,211 INFO L175 Difference]: Start difference. First operand has 409 places, 625 transitions, 11148 flow. Second operand 11 states and 210 transitions. [2024-06-27 18:19:19,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 676 transitions, 13230 flow [2024-06-27 18:19:20,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 676 transitions, 12999 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 18:19:20,762 INFO L231 Difference]: Finished difference. Result has 411 places, 630 transitions, 11465 flow [2024-06-27 18:19:20,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10917, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11465, PETRI_PLACES=411, PETRI_TRANSITIONS=630} [2024-06-27 18:19:20,763 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-27 18:19:20,763 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 630 transitions, 11465 flow [2024-06-27 18:19:20,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:20,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:20,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:20,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:19:20,763 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:20,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:20,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1240644074, now seen corresponding path program 14 times [2024-06-27 18:19:20,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:20,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989447153] [2024-06-27 18:19:20,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:20,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:21,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:21,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989447153] [2024-06-27 18:19:21,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989447153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:21,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:21,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:21,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830511336] [2024-06-27 18:19:21,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:21,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:21,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:21,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:21,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 630 transitions, 11465 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:21,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:21,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:21,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:23,846 INFO L124 PetriNetUnfolderBase]: 2825/5192 cut-off events. [2024-06-27 18:19:23,846 INFO L125 PetriNetUnfolderBase]: For 249341/249348 co-relation queries the response was YES. [2024-06-27 18:19:23,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45992 conditions, 5192 events. 2825/5192 cut-off events. For 249341/249348 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 37953 event pairs, 411 based on Foata normal form. 8/5021 useless extension candidates. Maximal degree in co-relation 45800. Up to 3667 conditions per place. [2024-06-27 18:19:23,913 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 504 selfloop transitions, 163 changer transitions 0/676 dead transitions. [2024-06-27 18:19:23,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 676 transitions, 13207 flow [2024-06-27 18:19:23,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:19:23,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-27 18:19:23,914 INFO L175 Difference]: Start difference. First operand has 411 places, 630 transitions, 11465 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:19:23,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 676 transitions, 13207 flow [2024-06-27 18:19:25,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 676 transitions, 12923 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:19:25,353 INFO L231 Difference]: Finished difference. Result has 415 places, 632 transitions, 11630 flow [2024-06-27 18:19:25,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11181, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11630, PETRI_PLACES=415, PETRI_TRANSITIONS=632} [2024-06-27 18:19:25,353 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 373 predicate places. [2024-06-27 18:19:25,354 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 632 transitions, 11630 flow [2024-06-27 18:19:25,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:25,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:25,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:25,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:19:25,354 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:25,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:25,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1232370112, now seen corresponding path program 14 times [2024-06-27 18:19:25,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:25,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178984300] [2024-06-27 18:19:25,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:25,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:26,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:26,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178984300] [2024-06-27 18:19:26,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178984300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:26,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:26,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487214162] [2024-06-27 18:19:26,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:26,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:26,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:26,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:26,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:26,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 632 transitions, 11630 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:26,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:26,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:26,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:27,574 INFO L124 PetriNetUnfolderBase]: 2821/5109 cut-off events. [2024-06-27 18:19:27,574 INFO L125 PetriNetUnfolderBase]: For 251449/251458 co-relation queries the response was YES. [2024-06-27 18:19:27,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45618 conditions, 5109 events. 2821/5109 cut-off events. For 251449/251458 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36762 event pairs, 530 based on Foata normal form. 11/4963 useless extension candidates. Maximal degree in co-relation 45425. Up to 4066 conditions per place. [2024-06-27 18:19:27,655 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 559 selfloop transitions, 107 changer transitions 0/675 dead transitions. [2024-06-27 18:19:27,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 675 transitions, 13271 flow [2024-06-27 18:19:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:19:27,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-27 18:19:27,656 INFO L175 Difference]: Start difference. First operand has 415 places, 632 transitions, 11630 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:19:27,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 675 transitions, 13271 flow [2024-06-27 18:19:29,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 675 transitions, 12802 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:29,204 INFO L231 Difference]: Finished difference. Result has 417 places, 633 transitions, 11407 flow [2024-06-27 18:19:29,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11161, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11407, PETRI_PLACES=417, PETRI_TRANSITIONS=633} [2024-06-27 18:19:29,204 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 375 predicate places. [2024-06-27 18:19:29,205 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 633 transitions, 11407 flow [2024-06-27 18:19:29,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:29,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:29,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:29,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:19:29,205 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:29,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash 395980452, now seen corresponding path program 1 times [2024-06-27 18:19:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:29,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892683809] [2024-06-27 18:19:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892683809] [2024-06-27 18:19:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892683809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:30,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:30,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:30,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214584135] [2024-06-27 18:19:30,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:30,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:30,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:30,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:19:30,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 633 transitions, 11407 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:30,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:30,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:19:30,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:31,683 INFO L124 PetriNetUnfolderBase]: 2670/4915 cut-off events. [2024-06-27 18:19:31,683 INFO L125 PetriNetUnfolderBase]: For 253455/253617 co-relation queries the response was YES. [2024-06-27 18:19:31,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43575 conditions, 4915 events. 2670/4915 cut-off events. For 253455/253617 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 35949 event pairs, 659 based on Foata normal form. 126/4881 useless extension candidates. Maximal degree in co-relation 43381. Up to 3919 conditions per place. [2024-06-27 18:19:31,766 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 582 selfloop transitions, 29 changer transitions 0/673 dead transitions. [2024-06-27 18:19:31,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 673 transitions, 12876 flow [2024-06-27 18:19:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:19:31,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-27 18:19:31,767 INFO L175 Difference]: Start difference. First operand has 417 places, 633 transitions, 11407 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:19:31,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 673 transitions, 12876 flow [2024-06-27 18:19:33,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 673 transitions, 12632 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:33,441 INFO L231 Difference]: Finished difference. Result has 420 places, 634 transitions, 11251 flow [2024-06-27 18:19:33,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11163, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11251, PETRI_PLACES=420, PETRI_TRANSITIONS=634} [2024-06-27 18:19:33,441 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 378 predicate places. [2024-06-27 18:19:33,441 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 634 transitions, 11251 flow [2024-06-27 18:19:33,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:33,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:33,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:33,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:19:33,441 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:33,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:33,442 INFO L85 PathProgramCache]: Analyzing trace with hash 395969540, now seen corresponding path program 15 times [2024-06-27 18:19:33,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:33,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984419458] [2024-06-27 18:19:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:33,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:34,163 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 18:19:34,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:34,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984419458] [2024-06-27 18:19:34,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984419458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:34,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:34,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:34,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77648285] [2024-06-27 18:19:34,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:34,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:34,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:34,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:34,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 634 transitions, 11251 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:34,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:34,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:34,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:36,004 INFO L124 PetriNetUnfolderBase]: 2835/5311 cut-off events. [2024-06-27 18:19:36,004 INFO L125 PetriNetUnfolderBase]: For 239328/239335 co-relation queries the response was YES. [2024-06-27 18:19:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44996 conditions, 5311 events. 2835/5311 cut-off events. For 239328/239335 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 39415 event pairs, 302 based on Foata normal form. 8/5125 useless extension candidates. Maximal degree in co-relation 44801. Up to 3455 conditions per place. [2024-06-27 18:19:36,096 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 473 selfloop transitions, 196 changer transitions 0/678 dead transitions. [2024-06-27 18:19:36,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 678 transitions, 12883 flow [2024-06-27 18:19:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:36,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 18:19:36,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-27 18:19:36,097 INFO L175 Difference]: Start difference. First operand has 420 places, 634 transitions, 11251 flow. Second operand 11 states and 207 transitions. [2024-06-27 18:19:36,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 678 transitions, 12883 flow [2024-06-27 18:19:37,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 678 transitions, 12777 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:37,711 INFO L231 Difference]: Finished difference. Result has 423 places, 634 transitions, 11542 flow [2024-06-27 18:19:37,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11145, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11542, PETRI_PLACES=423, PETRI_TRANSITIONS=634} [2024-06-27 18:19:37,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-27 18:19:37,711 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 634 transitions, 11542 flow [2024-06-27 18:19:37,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:37,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:37,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:37,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:19:37,712 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:37,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1473599968, now seen corresponding path program 15 times [2024-06-27 18:19:37,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:37,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665359522] [2024-06-27 18:19:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:38,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:38,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665359522] [2024-06-27 18:19:38,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665359522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:38,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:38,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:38,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553613785] [2024-06-27 18:19:38,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:38,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:38,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:38,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:38,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 634 transitions, 11542 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:38,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:38,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:38,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:40,398 INFO L124 PetriNetUnfolderBase]: 2874/5243 cut-off events. [2024-06-27 18:19:40,398 INFO L125 PetriNetUnfolderBase]: For 250830/250850 co-relation queries the response was YES. [2024-06-27 18:19:40,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46215 conditions, 5243 events. 2874/5243 cut-off events. For 250830/250850 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 38324 event pairs, 610 based on Foata normal form. 21/5101 useless extension candidates. Maximal degree in co-relation 46019. Up to 4193 conditions per place. [2024-06-27 18:19:40,470 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 520 selfloop transitions, 173 changer transitions 0/702 dead transitions. [2024-06-27 18:19:40,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 702 transitions, 13636 flow [2024-06-27 18:19:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:19:40,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 18:19:40,471 INFO L175 Difference]: Start difference. First operand has 423 places, 634 transitions, 11542 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:19:40,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 702 transitions, 13636 flow [2024-06-27 18:19:42,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 702 transitions, 13295 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:19:42,223 INFO L231 Difference]: Finished difference. Result has 424 places, 668 transitions, 12270 flow [2024-06-27 18:19:42,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11201, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12270, PETRI_PLACES=424, PETRI_TRANSITIONS=668} [2024-06-27 18:19:42,223 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-27 18:19:42,224 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 668 transitions, 12270 flow [2024-06-27 18:19:42,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:42,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:42,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:42,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:19:42,224 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:42,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1914834718, now seen corresponding path program 16 times [2024-06-27 18:19:42,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:42,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786158715] [2024-06-27 18:19:42,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:42,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:42,952 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 18:19:42,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:42,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786158715] [2024-06-27 18:19:42,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786158715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:42,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735878657] [2024-06-27 18:19:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:42,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:42,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:43,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:43,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 668 transitions, 12270 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:43,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:43,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:43,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:44,980 INFO L124 PetriNetUnfolderBase]: 2896/5354 cut-off events. [2024-06-27 18:19:44,980 INFO L125 PetriNetUnfolderBase]: For 263296/263315 co-relation queries the response was YES. [2024-06-27 18:19:45,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46867 conditions, 5354 events. 2896/5354 cut-off events. For 263296/263315 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 39566 event pairs, 515 based on Foata normal form. 21/5192 useless extension candidates. Maximal degree in co-relation 46669. Up to 4106 conditions per place. [2024-06-27 18:19:45,046 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 579 selfloop transitions, 123 changer transitions 0/711 dead transitions. [2024-06-27 18:19:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 711 transitions, 14088 flow [2024-06-27 18:19:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:19:45,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 18:19:45,047 INFO L175 Difference]: Start difference. First operand has 424 places, 668 transitions, 12270 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:19:45,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 711 transitions, 14088 flow [2024-06-27 18:19:46,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 711 transitions, 13779 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:46,501 INFO L231 Difference]: Finished difference. Result has 428 places, 672 transitions, 12404 flow [2024-06-27 18:19:46,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11961, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12404, PETRI_PLACES=428, PETRI_TRANSITIONS=672} [2024-06-27 18:19:46,502 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-06-27 18:19:46,502 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 672 transitions, 12404 flow [2024-06-27 18:19:46,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:46,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:46,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:46,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:19:46,503 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:46,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1469845558, now seen corresponding path program 16 times [2024-06-27 18:19:46,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:46,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423728876] [2024-06-27 18:19:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:46,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:47,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:47,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423728876] [2024-06-27 18:19:47,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423728876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:47,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:47,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:47,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083909393] [2024-06-27 18:19:47,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:47,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:47,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:47,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:47,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:47,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:47,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 672 transitions, 12404 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:47,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:47,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:47,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:49,133 INFO L124 PetriNetUnfolderBase]: 2907/5360 cut-off events. [2024-06-27 18:19:49,134 INFO L125 PetriNetUnfolderBase]: For 265013/265032 co-relation queries the response was YES. [2024-06-27 18:19:49,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47451 conditions, 5360 events. 2907/5360 cut-off events. For 265013/265032 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 39652 event pairs, 551 based on Foata normal form. 20/5196 useless extension candidates. Maximal degree in co-relation 47252. Up to 4188 conditions per place. [2024-06-27 18:19:49,364 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 585 selfloop transitions, 119 changer transitions 0/713 dead transitions. [2024-06-27 18:19:49,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 713 transitions, 14188 flow [2024-06-27 18:19:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:19:49,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 18:19:49,365 INFO L175 Difference]: Start difference. First operand has 428 places, 672 transitions, 12404 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:19:49,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 713 transitions, 14188 flow [2024-06-27 18:19:51,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 713 transitions, 13837 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:51,097 INFO L231 Difference]: Finished difference. Result has 430 places, 674 transitions, 12440 flow [2024-06-27 18:19:51,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12053, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12440, PETRI_PLACES=430, PETRI_TRANSITIONS=674} [2024-06-27 18:19:51,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2024-06-27 18:19:51,097 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 674 transitions, 12440 flow [2024-06-27 18:19:51,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:51,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:51,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:51,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:19:51,098 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:51,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash -466542156, now seen corresponding path program 17 times [2024-06-27 18:19:51,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:51,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571273247] [2024-06-27 18:19:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:51,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:51,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:51,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571273247] [2024-06-27 18:19:51,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571273247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:51,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:51,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:51,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863759675] [2024-06-27 18:19:51,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:51,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:51,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:51,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:51,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:51,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:51,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 674 transitions, 12440 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:51,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:51,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:51,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:53,771 INFO L124 PetriNetUnfolderBase]: 2944/5431 cut-off events. [2024-06-27 18:19:53,771 INFO L125 PetriNetUnfolderBase]: For 278600/278618 co-relation queries the response was YES. [2024-06-27 18:19:53,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48186 conditions, 5431 events. 2944/5431 cut-off events. For 278600/278618 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 40082 event pairs, 376 based on Foata normal form. 19/5278 useless extension candidates. Maximal degree in co-relation 47986. Up to 3715 conditions per place. [2024-06-27 18:19:53,861 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 522 selfloop transitions, 187 changer transitions 0/718 dead transitions. [2024-06-27 18:19:53,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 718 transitions, 14573 flow [2024-06-27 18:19:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:19:53,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 18:19:53,862 INFO L175 Difference]: Start difference. First operand has 430 places, 674 transitions, 12440 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:19:53,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 718 transitions, 14573 flow [2024-06-27 18:19:55,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 718 transitions, 14256 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:56,003 INFO L231 Difference]: Finished difference. Result has 433 places, 681 transitions, 12853 flow [2024-06-27 18:19:56,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12123, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12853, PETRI_PLACES=433, PETRI_TRANSITIONS=681} [2024-06-27 18:19:56,004 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-27 18:19:56,004 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 681 transitions, 12853 flow [2024-06-27 18:19:56,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:56,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:56,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:56,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:19:56,004 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:56,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:56,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1574812120, now seen corresponding path program 2 times [2024-06-27 18:19:56,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:56,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42184953] [2024-06-27 18:19:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42184953] [2024-06-27 18:19:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42184953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:56,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:56,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:19:56,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665232117] [2024-06-27 18:19:56,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:56,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:19:56,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:56,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:19:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:19:56,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:19:56,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 681 transitions, 12853 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:56,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:56,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:19:56,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:58,524 INFO L124 PetriNetUnfolderBase]: 2942/5378 cut-off events. [2024-06-27 18:19:58,524 INFO L125 PetriNetUnfolderBase]: For 279559/279579 co-relation queries the response was YES. [2024-06-27 18:19:58,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48809 conditions, 5378 events. 2942/5378 cut-off events. For 279559/279579 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 39569 event pairs, 609 based on Foata normal form. 21/5232 useless extension candidates. Maximal degree in co-relation 48607. Up to 4433 conditions per place. [2024-06-27 18:19:58,607 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 636 selfloop transitions, 66 changer transitions 0/711 dead transitions. [2024-06-27 18:19:58,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 711 transitions, 14422 flow [2024-06-27 18:19:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:19:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:19:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:19:58,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 18:19:58,608 INFO L175 Difference]: Start difference. First operand has 433 places, 681 transitions, 12853 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:19:58,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 711 transitions, 14422 flow [2024-06-27 18:20:00,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 711 transitions, 14098 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:00,739 INFO L231 Difference]: Finished difference. Result has 436 places, 681 transitions, 12679 flow [2024-06-27 18:20:00,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12529, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12679, PETRI_PLACES=436, PETRI_TRANSITIONS=681} [2024-06-27 18:20:00,740 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-27 18:20:00,740 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 681 transitions, 12679 flow [2024-06-27 18:20:00,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:00,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:00,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:00,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:20:00,740 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:00,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:00,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1324830658, now seen corresponding path program 17 times [2024-06-27 18:20:00,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:00,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210216113] [2024-06-27 18:20:00,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:00,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:01,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:01,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210216113] [2024-06-27 18:20:01,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210216113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:01,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:01,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:01,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619880564] [2024-06-27 18:20:01,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:01,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:01,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:01,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:01,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 681 transitions, 12679 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:01,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:01,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:01,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:03,532 INFO L124 PetriNetUnfolderBase]: 2966/5493 cut-off events. [2024-06-27 18:20:03,532 INFO L125 PetriNetUnfolderBase]: For 295058/295076 co-relation queries the response was YES. [2024-06-27 18:20:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49540 conditions, 5493 events. 2966/5493 cut-off events. For 295058/295076 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 41005 event pairs, 469 based on Foata normal form. 19/5323 useless extension candidates. Maximal degree in co-relation 49336. Up to 3930 conditions per place. [2024-06-27 18:20:03,617 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 550 selfloop transitions, 163 changer transitions 0/722 dead transitions. [2024-06-27 18:20:03,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 722 transitions, 14810 flow [2024-06-27 18:20:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:20:03,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 18:20:03,618 INFO L175 Difference]: Start difference. First operand has 436 places, 681 transitions, 12679 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:20:03,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 722 transitions, 14810 flow [2024-06-27 18:20:05,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 722 transitions, 14585 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:05,684 INFO L231 Difference]: Finished difference. Result has 436 places, 685 transitions, 13056 flow [2024-06-27 18:20:05,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12456, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13056, PETRI_PLACES=436, PETRI_TRANSITIONS=685} [2024-06-27 18:20:05,685 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-27 18:20:05,685 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 685 transitions, 13056 flow [2024-06-27 18:20:05,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:05,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:05,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:05,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:20:05,685 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:05,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1324830410, now seen corresponding path program 18 times [2024-06-27 18:20:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991385312] [2024-06-27 18:20:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:05,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:06,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:06,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991385312] [2024-06-27 18:20:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991385312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:06,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639800058] [2024-06-27 18:20:06,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:06,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:06,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:06,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:06,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:06,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 685 transitions, 13056 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:06,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:06,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:06,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:08,093 INFO L124 PetriNetUnfolderBase]: 2977/5529 cut-off events. [2024-06-27 18:20:08,094 INFO L125 PetriNetUnfolderBase]: For 296008/296026 co-relation queries the response was YES. [2024-06-27 18:20:08,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50280 conditions, 5529 events. 2977/5529 cut-off events. For 296008/296026 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 41279 event pairs, 400 based on Foata normal form. 19/5352 useless extension candidates. Maximal degree in co-relation 50076. Up to 3761 conditions per place. [2024-06-27 18:20:08,181 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 537 selfloop transitions, 178 changer transitions 0/724 dead transitions. [2024-06-27 18:20:08,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 724 transitions, 15001 flow [2024-06-27 18:20:08,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:20:08,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 18:20:08,182 INFO L175 Difference]: Start difference. First operand has 436 places, 685 transitions, 13056 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:20:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 724 transitions, 15001 flow [2024-06-27 18:20:10,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 724 transitions, 14717 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:10,546 INFO L231 Difference]: Finished difference. Result has 439 places, 687 transitions, 13210 flow [2024-06-27 18:20:10,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12776, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13210, PETRI_PLACES=439, PETRI_TRANSITIONS=687} [2024-06-27 18:20:10,547 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-27 18:20:10,547 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 687 transitions, 13210 flow [2024-06-27 18:20:10,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:10,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:10,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:20:10,547 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:10,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2059618730, now seen corresponding path program 18 times [2024-06-27 18:20:10,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:10,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427962256] [2024-06-27 18:20:10,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:10,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:11,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:11,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427962256] [2024-06-27 18:20:11,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427962256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:11,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:11,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:11,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709772075] [2024-06-27 18:20:11,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:11,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:11,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:11,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:11,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:11,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 687 transitions, 13210 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:11,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:11,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:11,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:13,370 INFO L124 PetriNetUnfolderBase]: 2975/5445 cut-off events. [2024-06-27 18:20:13,370 INFO L125 PetriNetUnfolderBase]: For 281929/281951 co-relation queries the response was YES. [2024-06-27 18:20:13,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50197 conditions, 5445 events. 2975/5445 cut-off events. For 281929/281951 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40156 event pairs, 568 based on Foata normal form. 23/5291 useless extension candidates. Maximal degree in co-relation 49992. Up to 4252 conditions per place. [2024-06-27 18:20:13,446 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 599 selfloop transitions, 119 changer transitions 0/727 dead transitions. [2024-06-27 18:20:13,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 727 transitions, 14975 flow [2024-06-27 18:20:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:13,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:20:13,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 18:20:13,447 INFO L175 Difference]: Start difference. First operand has 439 places, 687 transitions, 13210 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:20:13,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 727 transitions, 14975 flow [2024-06-27 18:20:15,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 727 transitions, 14583 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:15,931 INFO L231 Difference]: Finished difference. Result has 442 places, 687 transitions, 13070 flow [2024-06-27 18:20:15,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12818, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13070, PETRI_PLACES=442, PETRI_TRANSITIONS=687} [2024-06-27 18:20:15,931 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 400 predicate places. [2024-06-27 18:20:15,931 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 687 transitions, 13070 flow [2024-06-27 18:20:15,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:15,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:15,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:20:15,932 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:15,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2059618978, now seen corresponding path program 19 times [2024-06-27 18:20:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684469941] [2024-06-27 18:20:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:16,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684469941] [2024-06-27 18:20:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684469941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:16,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:16,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:16,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806893527] [2024-06-27 18:20:16,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:16,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:16,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:16,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:16,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:16,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 687 transitions, 13070 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:16,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:16,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:16,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:18,672 INFO L124 PetriNetUnfolderBase]: 2971/5442 cut-off events. [2024-06-27 18:20:18,673 INFO L125 PetriNetUnfolderBase]: For 274087/274109 co-relation queries the response was YES. [2024-06-27 18:20:18,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49266 conditions, 5442 events. 2971/5442 cut-off events. For 274087/274109 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 40124 event pairs, 558 based on Foata normal form. 24/5287 useless extension candidates. Maximal degree in co-relation 49060. Up to 4206 conditions per place. [2024-06-27 18:20:18,761 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 595 selfloop transitions, 123 changer transitions 0/727 dead transitions. [2024-06-27 18:20:18,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 727 transitions, 14835 flow [2024-06-27 18:20:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:20:18,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 18:20:18,763 INFO L175 Difference]: Start difference. First operand has 442 places, 687 transitions, 13070 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:20:18,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 727 transitions, 14835 flow [2024-06-27 18:20:20,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 727 transitions, 14416 flow, removed 52 selfloop flow, removed 11 redundant places. [2024-06-27 18:20:20,891 INFO L231 Difference]: Finished difference. Result has 441 places, 687 transitions, 12915 flow [2024-06-27 18:20:20,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12651, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12915, PETRI_PLACES=441, PETRI_TRANSITIONS=687} [2024-06-27 18:20:20,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-27 18:20:20,892 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 687 transitions, 12915 flow [2024-06-27 18:20:20,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:20,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:20,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:20,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:20:20,892 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:20,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:20,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1155423394, now seen corresponding path program 20 times [2024-06-27 18:20:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:20,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493506820] [2024-06-27 18:20:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:20,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493506820] [2024-06-27 18:20:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493506820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:21,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:21,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506609774] [2024-06-27 18:20:21,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:21,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:21,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:21,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:21,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:21,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:21,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 687 transitions, 12915 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:21,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:21,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:21,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:23,307 INFO L124 PetriNetUnfolderBase]: 2993/5448 cut-off events. [2024-06-27 18:20:23,307 INFO L125 PetriNetUnfolderBase]: For 268709/268729 co-relation queries the response was YES. [2024-06-27 18:20:23,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49476 conditions, 5448 events. 2993/5448 cut-off events. For 268709/268729 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 40074 event pairs, 421 based on Foata normal form. 22/5296 useless extension candidates. Maximal degree in co-relation 49271. Up to 4222 conditions per place. [2024-06-27 18:20:23,392 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 590 selfloop transitions, 127 changer transitions 0/726 dead transitions. [2024-06-27 18:20:23,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 726 transitions, 14815 flow [2024-06-27 18:20:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:20:23,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 18:20:23,393 INFO L175 Difference]: Start difference. First operand has 441 places, 687 transitions, 12915 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:20:23,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 726 transitions, 14815 flow [2024-06-27 18:20:25,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 726 transitions, 14409 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:25,340 INFO L231 Difference]: Finished difference. Result has 441 places, 690 transitions, 12931 flow [2024-06-27 18:20:25,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12509, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12931, PETRI_PLACES=441, PETRI_TRANSITIONS=690} [2024-06-27 18:20:25,341 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-27 18:20:25,341 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 690 transitions, 12931 flow [2024-06-27 18:20:25,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:25,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:25,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:25,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:20:25,341 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:25,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1155423642, now seen corresponding path program 19 times [2024-06-27 18:20:25,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:25,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894678336] [2024-06-27 18:20:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:25,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:26,360 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 18:20:26,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:26,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894678336] [2024-06-27 18:20:26,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894678336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:26,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:26,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:26,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521309394] [2024-06-27 18:20:26,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:26,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:26,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:26,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:26,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:26,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:26,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 690 transitions, 12931 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:26,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:26,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:26,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:28,402 INFO L124 PetriNetUnfolderBase]: 3004/5476 cut-off events. [2024-06-27 18:20:28,403 INFO L125 PetriNetUnfolderBase]: For 272974/272994 co-relation queries the response was YES. [2024-06-27 18:20:28,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49767 conditions, 5476 events. 3004/5476 cut-off events. For 272974/272994 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 40363 event pairs, 425 based on Foata normal form. 21/5319 useless extension candidates. Maximal degree in co-relation 49561. Up to 4261 conditions per place. [2024-06-27 18:20:28,489 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 594 selfloop transitions, 125 changer transitions 0/728 dead transitions. [2024-06-27 18:20:28,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 728 transitions, 14815 flow [2024-06-27 18:20:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:28,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:20:28,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 18:20:28,490 INFO L175 Difference]: Start difference. First operand has 441 places, 690 transitions, 12931 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:20:28,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 728 transitions, 14815 flow [2024-06-27 18:20:30,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 728 transitions, 14439 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:30,486 INFO L231 Difference]: Finished difference. Result has 443 places, 692 transitions, 12945 flow [2024-06-27 18:20:30,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12555, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12945, PETRI_PLACES=443, PETRI_TRANSITIONS=692} [2024-06-27 18:20:30,487 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-27 18:20:30,487 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 692 transitions, 12945 flow [2024-06-27 18:20:30,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:30,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:30,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:30,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:20:30,487 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:30,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:30,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1147149432, now seen corresponding path program 20 times [2024-06-27 18:20:30,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:30,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245840504] [2024-06-27 18:20:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:30,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:31,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:31,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245840504] [2024-06-27 18:20:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245840504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:31,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:31,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706649927] [2024-06-27 18:20:31,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:31,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:31,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:31,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:31,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 692 transitions, 12945 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:31,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:31,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:31,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:33,470 INFO L124 PetriNetUnfolderBase]: 3028/5626 cut-off events. [2024-06-27 18:20:33,471 INFO L125 PetriNetUnfolderBase]: For 289327/289347 co-relation queries the response was YES. [2024-06-27 18:20:33,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50617 conditions, 5626 events. 3028/5626 cut-off events. For 289327/289347 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 42404 event pairs, 329 based on Foata normal form. 21/5448 useless extension candidates. Maximal degree in co-relation 50410. Up to 3712 conditions per place. [2024-06-27 18:20:33,558 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 520 selfloop transitions, 203 changer transitions 0/732 dead transitions. [2024-06-27 18:20:33,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 732 transitions, 15111 flow [2024-06-27 18:20:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:20:33,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 18:20:33,560 INFO L175 Difference]: Start difference. First operand has 443 places, 692 transitions, 12945 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:20:33,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 732 transitions, 15111 flow [2024-06-27 18:20:35,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 732 transitions, 14745 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:35,715 INFO L231 Difference]: Finished difference. Result has 444 places, 696 transitions, 13259 flow [2024-06-27 18:20:35,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12581, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13259, PETRI_PLACES=444, PETRI_TRANSITIONS=696} [2024-06-27 18:20:35,716 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-06-27 18:20:35,716 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 696 transitions, 13259 flow [2024-06-27 18:20:35,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:35,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:35,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:35,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:20:35,716 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:35,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash -236861916, now seen corresponding path program 21 times [2024-06-27 18:20:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137832396] [2024-06-27 18:20:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:36,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:36,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137832396] [2024-06-27 18:20:36,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137832396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:36,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:36,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:36,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169204723] [2024-06-27 18:20:36,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:36,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:36,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:36,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:36,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:36,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:36,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 696 transitions, 13259 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:36,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:36,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:36,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:38,874 INFO L124 PetriNetUnfolderBase]: 3429/6344 cut-off events. [2024-06-27 18:20:38,874 INFO L125 PetriNetUnfolderBase]: For 315405/315422 co-relation queries the response was YES. [2024-06-27 18:20:38,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58616 conditions, 6344 events. 3429/6344 cut-off events. For 315405/315422 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 48923 event pairs, 487 based on Foata normal form. 18/6151 useless extension candidates. Maximal degree in co-relation 58409. Up to 4514 conditions per place. [2024-06-27 18:20:38,993 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 634 selfloop transitions, 201 changer transitions 0/844 dead transitions. [2024-06-27 18:20:38,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 844 transitions, 18092 flow [2024-06-27 18:20:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:20:38,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-27 18:20:38,994 INFO L175 Difference]: Start difference. First operand has 444 places, 696 transitions, 13259 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:20:38,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 844 transitions, 18092 flow [2024-06-27 18:20:41,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 844 transitions, 17789 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-27 18:20:41,447 INFO L231 Difference]: Finished difference. Result has 453 places, 783 transitions, 15726 flow [2024-06-27 18:20:41,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12978, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15726, PETRI_PLACES=453, PETRI_TRANSITIONS=783} [2024-06-27 18:20:41,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 411 predicate places. [2024-06-27 18:20:41,448 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 783 transitions, 15726 flow [2024-06-27 18:20:41,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:41,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:41,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:41,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:20:41,448 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:41,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1146841602, now seen corresponding path program 2 times [2024-06-27 18:20:41,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:41,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366062093] [2024-06-27 18:20:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:41,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:41,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:42,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366062093] [2024-06-27 18:20:42,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366062093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:42,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:42,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:42,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052787956] [2024-06-27 18:20:42,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:42,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:42,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:42,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:42,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:42,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:20:42,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 783 transitions, 15726 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:42,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:42,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:20:42,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:44,935 INFO L124 PetriNetUnfolderBase]: 3249/6047 cut-off events. [2024-06-27 18:20:44,935 INFO L125 PetriNetUnfolderBase]: For 331626/331843 co-relation queries the response was YES. [2024-06-27 18:20:45,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58512 conditions, 6047 events. 3249/6047 cut-off events. For 331626/331843 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 46726 event pairs, 679 based on Foata normal form. 131/5936 useless extension candidates. Maximal degree in co-relation 58299. Up to 4735 conditions per place. [2024-06-27 18:20:45,040 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 711 selfloop transitions, 42 changer transitions 0/820 dead transitions. [2024-06-27 18:20:45,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 820 transitions, 17473 flow [2024-06-27 18:20:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:45,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:20:45,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 18:20:45,041 INFO L175 Difference]: Start difference. First operand has 453 places, 783 transitions, 15726 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:20:45,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 820 transitions, 17473 flow [2024-06-27 18:20:47,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 820 transitions, 17250 flow, removed 93 selfloop flow, removed 2 redundant places. [2024-06-27 18:20:47,818 INFO L231 Difference]: Finished difference. Result has 461 places, 784 transitions, 15621 flow [2024-06-27 18:20:47,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15503, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=783, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=741, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15621, PETRI_PLACES=461, PETRI_TRANSITIONS=784} [2024-06-27 18:20:47,819 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2024-06-27 18:20:47,819 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 784 transitions, 15621 flow [2024-06-27 18:20:47,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:47,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:47,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:47,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:20:47,819 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:47,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:47,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1674920888, now seen corresponding path program 22 times [2024-06-27 18:20:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:47,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470654436] [2024-06-27 18:20:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:47,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:48,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470654436] [2024-06-27 18:20:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470654436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:48,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142268781] [2024-06-27 18:20:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:48,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:48,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:48,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:48,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:48,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 784 transitions, 15621 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:48,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:48,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:48,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:50,903 INFO L124 PetriNetUnfolderBase]: 3493/6413 cut-off events. [2024-06-27 18:20:50,903 INFO L125 PetriNetUnfolderBase]: For 338388/338414 co-relation queries the response was YES. [2024-06-27 18:20:50,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61436 conditions, 6413 events. 3493/6413 cut-off events. For 338388/338414 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 49206 event pairs, 477 based on Foata normal form. 28/6213 useless extension candidates. Maximal degree in co-relation 61221. Up to 4686 conditions per place. [2024-06-27 18:20:50,997 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 641 selfloop transitions, 179 changer transitions 0/829 dead transitions. [2024-06-27 18:20:50,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 829 transitions, 18122 flow [2024-06-27 18:20:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 18:20:50,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:20:50,998 INFO L175 Difference]: Start difference. First operand has 461 places, 784 transitions, 15621 flow. Second operand 10 states and 190 transitions. [2024-06-27 18:20:50,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 829 transitions, 18122 flow [2024-06-27 18:20:53,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 829 transitions, 18006 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:53,679 INFO L231 Difference]: Finished difference. Result has 464 places, 790 transitions, 16212 flow [2024-06-27 18:20:53,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15507, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16212, PETRI_PLACES=464, PETRI_TRANSITIONS=790} [2024-06-27 18:20:53,680 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 422 predicate places. [2024-06-27 18:20:53,680 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 790 transitions, 16212 flow [2024-06-27 18:20:53,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:53,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:53,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:53,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:20:53,681 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:53,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:53,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1147140814, now seen corresponding path program 23 times [2024-06-27 18:20:53,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:53,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232595234] [2024-06-27 18:20:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:54,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232595234] [2024-06-27 18:20:54,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232595234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:54,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:54,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:20:54,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138003954] [2024-06-27 18:20:54,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:54,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:20:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:20:54,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:20:54,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:20:54,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 790 transitions, 16212 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:54,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:54,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:20:54,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:57,027 INFO L124 PetriNetUnfolderBase]: 3504/6531 cut-off events. [2024-06-27 18:20:57,027 INFO L125 PetriNetUnfolderBase]: For 341064/341088 co-relation queries the response was YES. [2024-06-27 18:20:57,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62582 conditions, 6531 events. 3504/6531 cut-off events. For 341064/341088 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 50804 event pairs, 329 based on Foata normal form. 25/6320 useless extension candidates. Maximal degree in co-relation 62365. Up to 3794 conditions per place. [2024-06-27 18:20:57,124 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 518 selfloop transitions, 304 changer transitions 0/831 dead transitions. [2024-06-27 18:20:57,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 831 transitions, 18621 flow [2024-06-27 18:20:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:20:57,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:20:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:20:57,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-06-27 18:20:57,125 INFO L175 Difference]: Start difference. First operand has 464 places, 790 transitions, 16212 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:20:57,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 831 transitions, 18621 flow [2024-06-27 18:21:00,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 831 transitions, 18057 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:00,201 INFO L231 Difference]: Finished difference. Result has 467 places, 793 transitions, 16342 flow [2024-06-27 18:21:00,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15648, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16342, PETRI_PLACES=467, PETRI_TRANSITIONS=793} [2024-06-27 18:21:00,202 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 425 predicate places. [2024-06-27 18:21:00,202 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 793 transitions, 16342 flow [2024-06-27 18:21:00,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:00,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:00,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:00,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:21:00,203 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:00,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1155192754, now seen corresponding path program 24 times [2024-06-27 18:21:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474486155] [2024-06-27 18:21:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:00,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:00,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474486155] [2024-06-27 18:21:00,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474486155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:00,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:00,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964177557] [2024-06-27 18:21:00,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:00,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:01,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:21:01,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 793 transitions, 16342 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:01,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:01,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:21:01,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:03,308 INFO L124 PetriNetUnfolderBase]: 3502/6408 cut-off events. [2024-06-27 18:21:03,308 INFO L125 PetriNetUnfolderBase]: For 335518/335544 co-relation queries the response was YES. [2024-06-27 18:21:03,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62423 conditions, 6408 events. 3502/6408 cut-off events. For 335518/335544 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 49035 event pairs, 477 based on Foata normal form. 27/6208 useless extension candidates. Maximal degree in co-relation 62205. Up to 4843 conditions per place. [2024-06-27 18:21:03,399 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 652 selfloop transitions, 172 changer transitions 0/833 dead transitions. [2024-06-27 18:21:03,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 833 transitions, 18417 flow [2024-06-27 18:21:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:21:03,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 18:21:03,400 INFO L175 Difference]: Start difference. First operand has 467 places, 793 transitions, 16342 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:21:03,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 833 transitions, 18417 flow [2024-06-27 18:21:06,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 833 transitions, 17762 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:06,611 INFO L231 Difference]: Finished difference. Result has 470 places, 798 transitions, 16236 flow [2024-06-27 18:21:06,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15697, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16236, PETRI_PLACES=470, PETRI_TRANSITIONS=798} [2024-06-27 18:21:06,612 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 428 predicate places. [2024-06-27 18:21:06,612 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 798 transitions, 16236 flow [2024-06-27 18:21:06,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:06,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:06,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:06,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:21:06,612 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:06,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:06,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1146852514, now seen corresponding path program 25 times [2024-06-27 18:21:06,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:06,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954557354] [2024-06-27 18:21:06,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:06,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:07,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954557354] [2024-06-27 18:21:07,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954557354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:07,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:07,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:07,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461021722] [2024-06-27 18:21:07,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:07,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:07,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:07,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:07,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:07,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:21:07,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 798 transitions, 16236 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:07,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:07,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:21:07,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:09,684 INFO L124 PetriNetUnfolderBase]: 3500/6477 cut-off events. [2024-06-27 18:21:09,685 INFO L125 PetriNetUnfolderBase]: For 320884/320908 co-relation queries the response was YES. [2024-06-27 18:21:09,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61558 conditions, 6477 events. 3500/6477 cut-off events. For 320884/320908 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 50068 event pairs, 259 based on Foata normal form. 25/6307 useless extension candidates. Maximal degree in co-relation 61339. Up to 3790 conditions per place. [2024-06-27 18:21:09,789 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 486 selfloop transitions, 338 changer transitions 0/833 dead transitions. [2024-06-27 18:21:09,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 833 transitions, 18150 flow [2024-06-27 18:21:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:09,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:21:09,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-27 18:21:09,790 INFO L175 Difference]: Start difference. First operand has 470 places, 798 transitions, 16236 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:21:09,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 833 transitions, 18150 flow [2024-06-27 18:21:12,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 833 transitions, 17611 flow, removed 131 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:12,794 INFO L231 Difference]: Finished difference. Result has 474 places, 798 transitions, 16384 flow [2024-06-27 18:21:12,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15697, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16384, PETRI_PLACES=474, PETRI_TRANSITIONS=798} [2024-06-27 18:21:12,794 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-27 18:21:12,795 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 798 transitions, 16384 flow [2024-06-27 18:21:12,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:12,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:12,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:12,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:21:12,795 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:12,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1155193002, now seen corresponding path program 21 times [2024-06-27 18:21:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:12,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124351440] [2024-06-27 18:21:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:13,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124351440] [2024-06-27 18:21:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124351440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:13,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:13,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:13,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676373460] [2024-06-27 18:21:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:13,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:13,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:21:13,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 798 transitions, 16384 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:13,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:13,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:21:13,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:15,945 INFO L124 PetriNetUnfolderBase]: 3498/6407 cut-off events. [2024-06-27 18:21:15,945 INFO L125 PetriNetUnfolderBase]: For 319156/319182 co-relation queries the response was YES. [2024-06-27 18:21:16,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61806 conditions, 6407 events. 3498/6407 cut-off events. For 319156/319182 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 49160 event pairs, 492 based on Foata normal form. 27/6203 useless extension candidates. Maximal degree in co-relation 61586. Up to 4930 conditions per place. [2024-06-27 18:21:16,056 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 667 selfloop transitions, 157 changer transitions 0/833 dead transitions. [2024-06-27 18:21:16,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 833 transitions, 18304 flow [2024-06-27 18:21:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:21:16,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 18:21:16,058 INFO L175 Difference]: Start difference. First operand has 474 places, 798 transitions, 16384 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:21:16,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 833 transitions, 18304 flow [2024-06-27 18:21:19,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 833 transitions, 17682 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:19,035 INFO L231 Difference]: Finished difference. Result has 475 places, 798 transitions, 16087 flow [2024-06-27 18:21:19,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15762, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16087, PETRI_PLACES=475, PETRI_TRANSITIONS=798} [2024-06-27 18:21:19,036 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-27 18:21:19,036 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 798 transitions, 16087 flow [2024-06-27 18:21:19,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:19,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:19,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:19,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:21:19,036 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:19,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:19,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2019215212, now seen corresponding path program 3 times [2024-06-27 18:21:19,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:19,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191399120] [2024-06-27 18:21:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:19,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191399120] [2024-06-27 18:21:20,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191399120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:20,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:20,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:20,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996394460] [2024-06-27 18:21:20,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:20,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:20,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:20,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:21:20,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 798 transitions, 16087 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:20,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:20,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:21:20,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:22,460 INFO L124 PetriNetUnfolderBase]: 3338/6331 cut-off events. [2024-06-27 18:21:22,460 INFO L125 PetriNetUnfolderBase]: For 339923/340147 co-relation queries the response was YES. [2024-06-27 18:21:22,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59511 conditions, 6331 events. 3338/6331 cut-off events. For 339923/340147 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 49937 event pairs, 876 based on Foata normal form. 154/6257 useless extension candidates. Maximal degree in co-relation 59292. Up to 4899 conditions per place. [2024-06-27 18:21:22,567 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 754 selfloop transitions, 20 changer transitions 0/842 dead transitions. [2024-06-27 18:21:22,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 842 transitions, 18149 flow [2024-06-27 18:21:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 18:21:22,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-27 18:21:22,569 INFO L175 Difference]: Start difference. First operand has 475 places, 798 transitions, 16087 flow. Second operand 11 states and 205 transitions. [2024-06-27 18:21:22,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 842 transitions, 18149 flow [2024-06-27 18:21:24,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 842 transitions, 17358 flow, removed 29 selfloop flow, removed 12 redundant places. [2024-06-27 18:21:24,869 INFO L231 Difference]: Finished difference. Result has 474 places, 800 transitions, 15396 flow [2024-06-27 18:21:24,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15298, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15396, PETRI_PLACES=474, PETRI_TRANSITIONS=800} [2024-06-27 18:21:24,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-27 18:21:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 800 transitions, 15396 flow [2024-06-27 18:21:24,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:24,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:24,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:24,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:21:24,871 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:24,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2019630922, now seen corresponding path program 4 times [2024-06-27 18:21:24,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:24,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512681879] [2024-06-27 18:21:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:25,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:25,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512681879] [2024-06-27 18:21:25,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512681879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:25,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:25,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:25,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398618638] [2024-06-27 18:21:25,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:25,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:25,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:25,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:21:25,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 800 transitions, 15396 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:25,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:25,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:21:25,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:28,170 INFO L124 PetriNetUnfolderBase]: 3335/6335 cut-off events. [2024-06-27 18:21:28,170 INFO L125 PetriNetUnfolderBase]: For 321689/321913 co-relation queries the response was YES. [2024-06-27 18:21:28,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57187 conditions, 6335 events. 3335/6335 cut-off events. For 321689/321913 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 50050 event pairs, 881 based on Foata normal form. 154/6262 useless extension candidates. Maximal degree in co-relation 56970. Up to 4947 conditions per place. [2024-06-27 18:21:28,277 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 753 selfloop transitions, 19 changer transitions 0/840 dead transitions. [2024-06-27 18:21:28,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 840 transitions, 17196 flow [2024-06-27 18:21:28,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:21:28,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-06-27 18:21:28,279 INFO L175 Difference]: Start difference. First operand has 474 places, 800 transitions, 15396 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:21:28,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 840 transitions, 17196 flow [2024-06-27 18:21:30,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 840 transitions, 17101 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:30,426 INFO L231 Difference]: Finished difference. Result has 479 places, 800 transitions, 15343 flow [2024-06-27 18:21:30,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15301, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15343, PETRI_PLACES=479, PETRI_TRANSITIONS=800} [2024-06-27 18:21:30,427 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-06-27 18:21:30,427 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 800 transitions, 15343 flow [2024-06-27 18:21:30,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:30,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:30,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:30,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:21:30,427 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:30,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:30,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1506879586, now seen corresponding path program 26 times [2024-06-27 18:21:30,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:30,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051966988] [2024-06-27 18:21:30,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:31,195 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 18:21:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051966988] [2024-06-27 18:21:31,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051966988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:31,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:31,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:31,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257437039] [2024-06-27 18:21:31,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:31,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:31,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:31,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:31,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:31,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:21:31,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 800 transitions, 15343 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:31,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:31,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:21:31,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:33,543 INFO L124 PetriNetUnfolderBase]: 3541/6689 cut-off events. [2024-06-27 18:21:33,544 INFO L125 PetriNetUnfolderBase]: For 315115/315141 co-relation queries the response was YES. [2024-06-27 18:21:33,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59424 conditions, 6689 events. 3541/6689 cut-off events. For 315115/315141 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 52878 event pairs, 1009 based on Foata normal form. 27/6489 useless extension candidates. Maximal degree in co-relation 59205. Up to 5527 conditions per place. [2024-06-27 18:21:33,651 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 811 selfloop transitions, 18 changer transitions 0/838 dead transitions. [2024-06-27 18:21:33,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 838 transitions, 17352 flow [2024-06-27 18:21:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:21:33,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 18:21:33,653 INFO L175 Difference]: Start difference. First operand has 479 places, 800 transitions, 15343 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:21:33,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 838 transitions, 17352 flow [2024-06-27 18:21:35,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 838 transitions, 17281 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 18:21:35,782 INFO L231 Difference]: Finished difference. Result has 478 places, 804 transitions, 15453 flow [2024-06-27 18:21:35,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15272, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=783, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15453, PETRI_PLACES=478, PETRI_TRANSITIONS=804} [2024-06-27 18:21:35,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-27 18:21:35,783 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 804 transitions, 15453 flow [2024-06-27 18:21:35,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:35,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:35,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:35,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:21:35,784 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:35,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:35,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1849167264, now seen corresponding path program 5 times [2024-06-27 18:21:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:35,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381009969] [2024-06-27 18:21:35,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:35,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381009969] [2024-06-27 18:21:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381009969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:36,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:36,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:21:36,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665011562] [2024-06-27 18:21:36,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:36,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:21:36,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:36,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:21:36,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:21:36,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:21:36,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 804 transitions, 15453 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:36,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:36,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:21:36,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:38,854 INFO L124 PetriNetUnfolderBase]: 3362/6350 cut-off events. [2024-06-27 18:21:38,854 INFO L125 PetriNetUnfolderBase]: For 330133/330308 co-relation queries the response was YES. [2024-06-27 18:21:38,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57696 conditions, 6350 events. 3362/6350 cut-off events. For 330133/330308 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49699 event pairs, 619 based on Foata normal form. 123/6276 useless extension candidates. Maximal degree in co-relation 57476. Up to 4793 conditions per place. [2024-06-27 18:21:38,949 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 714 selfloop transitions, 53 changer transitions 0/836 dead transitions. [2024-06-27 18:21:38,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 836 transitions, 17210 flow [2024-06-27 18:21:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:21:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:21:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:21:38,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 18:21:38,950 INFO L175 Difference]: Start difference. First operand has 478 places, 804 transitions, 15453 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:21:38,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 836 transitions, 17210 flow [2024-06-27 18:21:41,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 836 transitions, 17073 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 18:21:41,384 INFO L231 Difference]: Finished difference. Result has 481 places, 805 transitions, 15456 flow [2024-06-27 18:21:41,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15316, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15456, PETRI_PLACES=481, PETRI_TRANSITIONS=805} [2024-06-27 18:21:41,384 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-27 18:21:41,384 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 805 transitions, 15456 flow [2024-06-27 18:21:41,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:41,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:41,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:21:41,385 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:41,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash 786024214, now seen corresponding path program 27 times [2024-06-27 18:21:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94190872] [2024-06-27 18:21:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:42,182 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 18:21:42,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:42,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94190872] [2024-06-27 18:21:42,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94190872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:42,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:42,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:42,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605660380] [2024-06-27 18:21:42,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:42,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:42,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:42,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:42,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:21:42,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 805 transitions, 15456 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:42,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:42,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:21:42,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:44,736 INFO L124 PetriNetUnfolderBase]: 3607/6554 cut-off events. [2024-06-27 18:21:44,736 INFO L125 PetriNetUnfolderBase]: For 344471/344497 co-relation queries the response was YES. [2024-06-27 18:21:44,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61035 conditions, 6554 events. 3607/6554 cut-off events. For 344471/344497 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 50088 event pairs, 409 based on Foata normal form. 27/6383 useless extension candidates. Maximal degree in co-relation 60813. Up to 5041 conditions per place. [2024-06-27 18:21:44,827 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 700 selfloop transitions, 144 changer transitions 0/853 dead transitions. [2024-06-27 18:21:44,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 853 transitions, 18323 flow [2024-06-27 18:21:44,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:44,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:21:44,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-27 18:21:44,828 INFO L175 Difference]: Start difference. First operand has 481 places, 805 transitions, 15456 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:21:44,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 853 transitions, 18323 flow [2024-06-27 18:21:47,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 853 transitions, 18187 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:47,579 INFO L231 Difference]: Finished difference. Result has 487 places, 815 transitions, 16060 flow [2024-06-27 18:21:47,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15320, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16060, PETRI_PLACES=487, PETRI_TRANSITIONS=815} [2024-06-27 18:21:47,580 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-27 18:21:47,580 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 815 transitions, 16060 flow [2024-06-27 18:21:47,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:47,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:47,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:47,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:21:47,580 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:47,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1849178176, now seen corresponding path program 28 times [2024-06-27 18:21:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:47,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389237574] [2024-06-27 18:21:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:47,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389237574] [2024-06-27 18:21:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389237574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:48,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:48,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548304166] [2024-06-27 18:21:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:48,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:48,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:21:48,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 815 transitions, 16060 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:48,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:48,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:21:48,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:50,651 INFO L124 PetriNetUnfolderBase]: 3674/6679 cut-off events. [2024-06-27 18:21:50,651 INFO L125 PetriNetUnfolderBase]: For 400245/400267 co-relation queries the response was YES. [2024-06-27 18:21:50,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63925 conditions, 6679 events. 3674/6679 cut-off events. For 400245/400267 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 50848 event pairs, 375 based on Foata normal form. 24/6513 useless extension candidates. Maximal degree in co-relation 63699. Up to 2794 conditions per place. [2024-06-27 18:21:50,969 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 520 selfloop transitions, 336 changer transitions 0/865 dead transitions. [2024-06-27 18:21:50,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 865 transitions, 19248 flow [2024-06-27 18:21:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-27 18:21:50,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 18:21:50,970 INFO L175 Difference]: Start difference. First operand has 487 places, 815 transitions, 16060 flow. Second operand 10 states and 200 transitions. [2024-06-27 18:21:50,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 865 transitions, 19248 flow [2024-06-27 18:21:53,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 865 transitions, 18893 flow, removed 104 selfloop flow, removed 4 redundant places. [2024-06-27 18:21:53,979 INFO L231 Difference]: Finished difference. Result has 494 places, 825 transitions, 17152 flow [2024-06-27 18:21:53,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15705, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17152, PETRI_PLACES=494, PETRI_TRANSITIONS=825} [2024-06-27 18:21:53,979 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 452 predicate places. [2024-06-27 18:21:53,979 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 825 transitions, 17152 flow [2024-06-27 18:21:53,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:53,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:53,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:53,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:21:53,980 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:53,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash -383434430, now seen corresponding path program 6 times [2024-06-27 18:21:53,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:53,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758078157] [2024-06-27 18:21:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:53,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758078157] [2024-06-27 18:21:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758078157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:55,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:55,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:21:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080848744] [2024-06-27 18:21:55,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:55,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:21:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:21:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:21:55,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 18:21:55,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 825 transitions, 17152 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:55,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:55,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 18:21:55,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:57,694 INFO L124 PetriNetUnfolderBase]: 3441/6425 cut-off events. [2024-06-27 18:21:57,694 INFO L125 PetriNetUnfolderBase]: For 407910/408080 co-relation queries the response was YES. [2024-06-27 18:21:57,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63738 conditions, 6425 events. 3441/6425 cut-off events. For 407910/408080 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50168 event pairs, 679 based on Foata normal form. 113/6327 useless extension candidates. Maximal degree in co-relation 63509. Up to 5111 conditions per place. [2024-06-27 18:21:57,797 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 750 selfloop transitions, 35 changer transitions 0/856 dead transitions. [2024-06-27 18:21:57,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 856 transitions, 18943 flow [2024-06-27 18:21:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:21:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:21:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:21:57,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 18:21:57,798 INFO L175 Difference]: Start difference. First operand has 494 places, 825 transitions, 17152 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:21:57,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 856 transitions, 18943 flow [2024-06-27 18:22:00,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 856 transitions, 18643 flow, removed 121 selfloop flow, removed 3 redundant places. [2024-06-27 18:22:00,657 INFO L231 Difference]: Finished difference. Result has 501 places, 826 transitions, 16958 flow [2024-06-27 18:22:00,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16852, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=790, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16958, PETRI_PLACES=501, PETRI_TRANSITIONS=826} [2024-06-27 18:22:00,657 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-27 18:22:00,658 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 826 transitions, 16958 flow [2024-06-27 18:22:00,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:00,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:00,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:00,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:22:00,658 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:00,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash -383445342, now seen corresponding path program 29 times [2024-06-27 18:22:00,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:00,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034165364] [2024-06-27 18:22:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:00,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:01,362 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 18:22:01,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034165364] [2024-06-27 18:22:01,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034165364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:01,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:01,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:01,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044697479] [2024-06-27 18:22:01,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:01,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:01,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:01,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:01,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:01,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:22:01,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 826 transitions, 16958 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:01,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:01,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:22:01,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:03,908 INFO L124 PetriNetUnfolderBase]: 3723/6729 cut-off events. [2024-06-27 18:22:03,908 INFO L125 PetriNetUnfolderBase]: For 394552/394578 co-relation queries the response was YES. [2024-06-27 18:22:03,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66047 conditions, 6729 events. 3723/6729 cut-off events. For 394552/394578 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 51349 event pairs, 429 based on Foata normal form. 28/6564 useless extension candidates. Maximal degree in co-relation 65816. Up to 5099 conditions per place. [2024-06-27 18:22:04,016 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 707 selfloop transitions, 153 changer transitions 0/869 dead transitions. [2024-06-27 18:22:04,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 869 transitions, 19459 flow [2024-06-27 18:22:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 18:22:04,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 18:22:04,017 INFO L175 Difference]: Start difference. First operand has 501 places, 826 transitions, 16958 flow. Second operand 10 states and 194 transitions. [2024-06-27 18:22:04,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 869 transitions, 19459 flow [2024-06-27 18:22:07,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 869 transitions, 19376 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:07,602 INFO L231 Difference]: Finished difference. Result has 506 places, 832 transitions, 17523 flow [2024-06-27 18:22:07,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=16875, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17523, PETRI_PLACES=506, PETRI_TRANSITIONS=832} [2024-06-27 18:22:07,603 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 464 predicate places. [2024-06-27 18:22:07,603 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 832 transitions, 17523 flow [2024-06-27 18:22:07,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:07,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:07,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:07,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:22:07,604 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:07,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1302715712, now seen corresponding path program 30 times [2024-06-27 18:22:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:07,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677932933] [2024-06-27 18:22:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:08,259 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 18:22:08,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:08,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677932933] [2024-06-27 18:22:08,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677932933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:08,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:08,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:08,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950547012] [2024-06-27 18:22:08,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:08,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:08,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:08,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:22:08,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 832 transitions, 17523 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:08,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:08,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:22:08,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:10,711 INFO L124 PetriNetUnfolderBase]: 3758/6777 cut-off events. [2024-06-27 18:22:10,711 INFO L125 PetriNetUnfolderBase]: For 417266/417292 co-relation queries the response was YES. [2024-06-27 18:22:10,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67687 conditions, 6777 events. 3758/6777 cut-off events. For 417266/417292 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 51737 event pairs, 435 based on Foata normal form. 28/6613 useless extension candidates. Maximal degree in co-relation 67453. Up to 5311 conditions per place. [2024-06-27 18:22:10,823 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 721 selfloop transitions, 142 changer transitions 0/872 dead transitions. [2024-06-27 18:22:10,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 872 transitions, 19973 flow [2024-06-27 18:22:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 18:22:10,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-27 18:22:10,824 INFO L175 Difference]: Start difference. First operand has 506 places, 832 transitions, 17523 flow. Second operand 10 states and 189 transitions. [2024-06-27 18:22:10,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 872 transitions, 19973 flow [2024-06-27 18:22:14,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 872 transitions, 19607 flow, removed 97 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:14,567 INFO L231 Difference]: Finished difference. Result has 509 places, 837 transitions, 17708 flow [2024-06-27 18:22:14,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17203, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17708, PETRI_PLACES=509, PETRI_TRANSITIONS=837} [2024-06-27 18:22:14,568 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 467 predicate places. [2024-06-27 18:22:14,568 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 837 transitions, 17708 flow [2024-06-27 18:22:14,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:14,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:14,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:14,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:22:14,569 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:14,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:14,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1310750664, now seen corresponding path program 22 times [2024-06-27 18:22:14,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:14,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543592304] [2024-06-27 18:22:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:14,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:15,523 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 18:22:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543592304] [2024-06-27 18:22:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543592304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:15,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:15,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:15,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111253673] [2024-06-27 18:22:15,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:15,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:15,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:22:15,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 837 transitions, 17708 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:15,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:15,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:22:15,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:18,177 INFO L124 PetriNetUnfolderBase]: 3782/6889 cut-off events. [2024-06-27 18:22:18,177 INFO L125 PetriNetUnfolderBase]: For 423021/423047 co-relation queries the response was YES. [2024-06-27 18:22:18,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68612 conditions, 6889 events. 3782/6889 cut-off events. For 423021/423047 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 53089 event pairs, 442 based on Foata normal form. 27/6705 useless extension candidates. Maximal degree in co-relation 68377. Up to 5393 conditions per place. [2024-06-27 18:22:18,302 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 728 selfloop transitions, 139 changer transitions 0/876 dead transitions. [2024-06-27 18:22:18,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 876 transitions, 20134 flow [2024-06-27 18:22:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:22:18,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-27 18:22:18,303 INFO L175 Difference]: Start difference. First operand has 509 places, 837 transitions, 17708 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:22:18,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 876 transitions, 20134 flow [2024-06-27 18:22:22,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 876 transitions, 19887 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:22,252 INFO L231 Difference]: Finished difference. Result has 513 places, 841 transitions, 17992 flow [2024-06-27 18:22:22,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17461, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17992, PETRI_PLACES=513, PETRI_TRANSITIONS=841} [2024-06-27 18:22:22,253 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 471 predicate places. [2024-06-27 18:22:22,253 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 841 transitions, 17992 flow [2024-06-27 18:22:22,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:22,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:22,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:22,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:22:22,253 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:22,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:22,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1849466476, now seen corresponding path program 31 times [2024-06-27 18:22:22,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:22,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810769485] [2024-06-27 18:22:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:22,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:23,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810769485] [2024-06-27 18:22:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810769485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:23,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:23,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:23,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458098863] [2024-06-27 18:22:23,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:23,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:23,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:23,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:23,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:22:23,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 841 transitions, 17992 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:23,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:23,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:22:23,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:25,475 INFO L124 PetriNetUnfolderBase]: 3804/6893 cut-off events. [2024-06-27 18:22:25,475 INFO L125 PetriNetUnfolderBase]: For 435061/435083 co-relation queries the response was YES. [2024-06-27 18:22:25,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69375 conditions, 6893 events. 3804/6893 cut-off events. For 435061/435083 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 52670 event pairs, 383 based on Foata normal form. 24/6727 useless extension candidates. Maximal degree in co-relation 69138. Up to 2930 conditions per place. [2024-06-27 18:22:25,604 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 523 selfloop transitions, 351 changer transitions 0/883 dead transitions. [2024-06-27 18:22:25,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 883 transitions, 20798 flow [2024-06-27 18:22:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 18:22:25,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-06-27 18:22:25,605 INFO L175 Difference]: Start difference. First operand has 513 places, 841 transitions, 17992 flow. Second operand 10 states and 199 transitions. [2024-06-27 18:22:25,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 883 transitions, 20798 flow [2024-06-27 18:22:29,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 883 transitions, 20513 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:29,542 INFO L231 Difference]: Finished difference. Result has 517 places, 843 transitions, 18484 flow [2024-06-27 18:22:29,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17707, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18484, PETRI_PLACES=517, PETRI_TRANSITIONS=843} [2024-06-27 18:22:29,543 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 475 predicate places. [2024-06-27 18:22:29,543 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 843 transitions, 18484 flow [2024-06-27 18:22:29,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:29,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:29,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:29,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:22:29,544 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:29,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:29,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1310759282, now seen corresponding path program 32 times [2024-06-27 18:22:29,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:29,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684105652] [2024-06-27 18:22:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:29,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:30,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:30,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684105652] [2024-06-27 18:22:30,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684105652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:30,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:30,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:30,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701626610] [2024-06-27 18:22:30,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:30,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:30,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:30,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:30,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:30,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:22:30,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 843 transitions, 18484 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:30,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:30,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:22:30,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:32,759 INFO L124 PetriNetUnfolderBase]: 3802/6894 cut-off events. [2024-06-27 18:22:32,760 INFO L125 PetriNetUnfolderBase]: For 429863/429889 co-relation queries the response was YES. [2024-06-27 18:22:32,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70513 conditions, 6894 events. 3802/6894 cut-off events. For 429863/429889 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 52936 event pairs, 429 based on Foata normal form. 27/6714 useless extension candidates. Maximal degree in co-relation 70274. Up to 5335 conditions per place. [2024-06-27 18:22:32,874 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 725 selfloop transitions, 147 changer transitions 0/881 dead transitions. [2024-06-27 18:22:32,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 881 transitions, 20720 flow [2024-06-27 18:22:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 18:22:32,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-27 18:22:32,875 INFO L175 Difference]: Start difference. First operand has 517 places, 843 transitions, 18484 flow. Second operand 10 states and 192 transitions. [2024-06-27 18:22:32,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 881 transitions, 20720 flow [2024-06-27 18:22:36,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 881 transitions, 20156 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:36,664 INFO L231 Difference]: Finished difference. Result has 521 places, 845 transitions, 18245 flow [2024-06-27 18:22:36,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17936, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18245, PETRI_PLACES=521, PETRI_TRANSITIONS=845} [2024-06-27 18:22:36,664 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 479 predicate places. [2024-06-27 18:22:36,664 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 845 transitions, 18245 flow [2024-06-27 18:22:36,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:36,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:36,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:36,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:22:36,665 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:36,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1302476702, now seen corresponding path program 33 times [2024-06-27 18:22:36,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:36,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500595824] [2024-06-27 18:22:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:36,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:37,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500595824] [2024-06-27 18:22:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500595824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:37,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891107609] [2024-06-27 18:22:37,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:37,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:37,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:37,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:22:37,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 845 transitions, 18245 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:37,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:37,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:22:37,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:39,890 INFO L124 PetriNetUnfolderBase]: 3820/6897 cut-off events. [2024-06-27 18:22:39,890 INFO L125 PetriNetUnfolderBase]: For 438308/438334 co-relation queries the response was YES. [2024-06-27 18:22:39,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69393 conditions, 6897 events. 3820/6897 cut-off events. For 438308/438334 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 52765 event pairs, 452 based on Foata normal form. 30/6730 useless extension candidates. Maximal degree in co-relation 69153. Up to 5490 conditions per place. [2024-06-27 18:22:40,010 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 737 selfloop transitions, 135 changer transitions 0/881 dead transitions. [2024-06-27 18:22:40,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 881 transitions, 20374 flow [2024-06-27 18:22:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:22:40,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-06-27 18:22:40,011 INFO L175 Difference]: Start difference. First operand has 521 places, 845 transitions, 18245 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:22:40,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 881 transitions, 20374 flow [2024-06-27 18:22:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 881 transitions, 20085 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:22:43,721 INFO L231 Difference]: Finished difference. Result has 525 places, 848 transitions, 18380 flow [2024-06-27 18:22:43,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17960, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18380, PETRI_PLACES=525, PETRI_TRANSITIONS=848} [2024-06-27 18:22:43,721 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 483 predicate places. [2024-06-27 18:22:43,721 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 848 transitions, 18380 flow [2024-06-27 18:22:43,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:43,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:43,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:43,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:22:43,722 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:43,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:43,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1849474846, now seen corresponding path program 34 times [2024-06-27 18:22:43,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:43,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014389749] [2024-06-27 18:22:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:43,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:44,513 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 18:22:44,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:44,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014389749] [2024-06-27 18:22:44,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014389749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:44,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:44,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:44,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660047416] [2024-06-27 18:22:44,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:44,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:44,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:44,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:44,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:44,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:22:44,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 848 transitions, 18380 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:44,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:44,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:22:44,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:47,014 INFO L124 PetriNetUnfolderBase]: 3818/6875 cut-off events. [2024-06-27 18:22:47,014 INFO L125 PetriNetUnfolderBase]: For 418778/418800 co-relation queries the response was YES. [2024-06-27 18:22:47,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69218 conditions, 6875 events. 3818/6875 cut-off events. For 418778/418800 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 52397 event pairs, 315 based on Foata normal form. 23/6721 useless extension candidates. Maximal degree in co-relation 68977. Up to 3901 conditions per place. [2024-06-27 18:22:47,140 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 545 selfloop transitions, 338 changer transitions 0/892 dead transitions. [2024-06-27 18:22:47,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 892 transitions, 20816 flow [2024-06-27 18:22:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:22:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:22:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 18:22:47,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-06-27 18:22:47,142 INFO L175 Difference]: Start difference. First operand has 525 places, 848 transitions, 18380 flow. Second operand 10 states and 191 transitions. [2024-06-27 18:22:47,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 892 transitions, 20816 flow [2024-06-27 18:22:50,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 892 transitions, 20382 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-06-27 18:22:50,743 INFO L231 Difference]: Finished difference. Result has 529 places, 856 transitions, 18867 flow [2024-06-27 18:22:50,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=17946, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18867, PETRI_PLACES=529, PETRI_TRANSITIONS=856} [2024-06-27 18:22:50,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 487 predicate places. [2024-06-27 18:22:50,744 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 856 transitions, 18867 flow [2024-06-27 18:22:50,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:50,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:50,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:50,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:22:50,745 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:50,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1849475094, now seen corresponding path program 23 times [2024-06-27 18:22:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:50,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931683752] [2024-06-27 18:22:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931683752] [2024-06-27 18:22:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931683752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:51,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:51,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504177077] [2024-06-27 18:22:51,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:51,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:51,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:22:51,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:22:51,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 856 transitions, 18867 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:51,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:51,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:22:51,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:54,983 INFO L124 PetriNetUnfolderBase]: 4052/7744 cut-off events. [2024-06-27 18:22:54,983 INFO L125 PetriNetUnfolderBase]: For 439053/439079 co-relation queries the response was YES. [2024-06-27 18:22:55,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75065 conditions, 7744 events. 4052/7744 cut-off events. For 439053/439079 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 63392 event pairs, 331 based on Foata normal form. 27/7473 useless extension candidates. Maximal degree in co-relation 74821. Up to 4686 conditions per place. [2024-06-27 18:22:55,136 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 664 selfloop transitions, 311 changer transitions 0/984 dead transitions. [2024-06-27 18:22:55,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 984 transitions, 23257 flow [2024-06-27 18:22:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 18:22:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 18:22:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 276 transitions. [2024-06-27 18:22:55,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-06-27 18:22:55,137 INFO L175 Difference]: Start difference. First operand has 529 places, 856 transitions, 18867 flow. Second operand 16 states and 276 transitions. [2024-06-27 18:22:55,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 984 transitions, 23257 flow [2024-06-27 18:22:58,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 984 transitions, 22294 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:58,969 INFO L231 Difference]: Finished difference. Result has 546 places, 921 transitions, 20450 flow [2024-06-27 18:22:58,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=18024, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20450, PETRI_PLACES=546, PETRI_TRANSITIONS=921} [2024-06-27 18:22:58,969 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 504 predicate places. [2024-06-27 18:22:58,969 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 921 transitions, 20450 flow [2024-06-27 18:22:58,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:58,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:58,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:58,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:22:58,970 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:58,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:58,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1302476454, now seen corresponding path program 24 times [2024-06-27 18:22:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:58,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939422002] [2024-06-27 18:22:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:58,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:59,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939422002] [2024-06-27 18:22:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939422002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:59,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:59,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:22:59,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157068857] [2024-06-27 18:22:59,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:59,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:22:59,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:59,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:22:59,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:00,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:23:00,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 921 transitions, 20450 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:00,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:00,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:23:00,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:02,648 INFO L124 PetriNetUnfolderBase]: 4070/7397 cut-off events. [2024-06-27 18:23:02,649 INFO L125 PetriNetUnfolderBase]: For 439843/439875 co-relation queries the response was YES. [2024-06-27 18:23:02,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75093 conditions, 7397 events. 4070/7397 cut-off events. For 439843/439875 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 57738 event pairs, 494 based on Foata normal form. 33/7231 useless extension candidates. Maximal degree in co-relation 74841. Up to 5759 conditions per place. [2024-06-27 18:23:02,786 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 766 selfloop transitions, 181 changer transitions 0/956 dead transitions. [2024-06-27 18:23:02,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 956 transitions, 22808 flow [2024-06-27 18:23:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:23:02,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 18:23:02,787 INFO L175 Difference]: Start difference. First operand has 546 places, 921 transitions, 20450 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:23:02,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 956 transitions, 22808 flow [2024-06-27 18:23:07,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 956 transitions, 22164 flow, removed 194 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:07,376 INFO L231 Difference]: Finished difference. Result has 552 places, 925 transitions, 20442 flow [2024-06-27 18:23:07,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19936, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=921, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20442, PETRI_PLACES=552, PETRI_TRANSITIONS=925} [2024-06-27 18:23:07,376 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2024-06-27 18:23:07,376 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 925 transitions, 20442 flow [2024-06-27 18:23:07,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:07,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:07,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:07,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:23:07,377 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:07,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:07,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1302707342, now seen corresponding path program 35 times [2024-06-27 18:23:07,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:07,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126023349] [2024-06-27 18:23:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:07,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:08,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:08,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126023349] [2024-06-27 18:23:08,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126023349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:08,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:08,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:08,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460287582] [2024-06-27 18:23:08,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:08,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:08,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:08,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:08,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:08,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:23:08,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 925 transitions, 20442 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:08,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:08,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:23:08,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:11,113 INFO L124 PetriNetUnfolderBase]: 4068/7401 cut-off events. [2024-06-27 18:23:11,113 INFO L125 PetriNetUnfolderBase]: For 430103/430135 co-relation queries the response was YES. [2024-06-27 18:23:11,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73688 conditions, 7401 events. 4068/7401 cut-off events. For 430103/430135 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 57760 event pairs, 479 based on Foata normal form. 33/7232 useless extension candidates. Maximal degree in co-relation 73435. Up to 5666 conditions per place. [2024-06-27 18:23:11,231 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 764 selfloop transitions, 187 changer transitions 0/960 dead transitions. [2024-06-27 18:23:11,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 960 transitions, 22624 flow [2024-06-27 18:23:11,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:11,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:23:11,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 18:23:11,232 INFO L175 Difference]: Start difference. First operand has 552 places, 925 transitions, 20442 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:23:11,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 960 transitions, 22624 flow [2024-06-27 18:23:15,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 960 transitions, 22076 flow, removed 96 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:15,609 INFO L231 Difference]: Finished difference. Result has 555 places, 928 transitions, 20357 flow [2024-06-27 18:23:15,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19918, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=925, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20357, PETRI_PLACES=555, PETRI_TRANSITIONS=928} [2024-06-27 18:23:15,610 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 513 predicate places. [2024-06-27 18:23:15,610 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 928 transitions, 20357 flow [2024-06-27 18:23:15,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:15,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:15,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:15,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:23:15,611 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:15,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:15,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1302707094, now seen corresponding path program 25 times [2024-06-27 18:23:15,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:15,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874224428] [2024-06-27 18:23:15,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:15,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:16,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:16,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874224428] [2024-06-27 18:23:16,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874224428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:16,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:16,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357784286] [2024-06-27 18:23:16,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:16,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:16,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:16,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:16,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:23:16,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 928 transitions, 20357 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:16,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:16,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:23:16,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:19,271 INFO L124 PetriNetUnfolderBase]: 4066/7405 cut-off events. [2024-06-27 18:23:19,271 INFO L125 PetriNetUnfolderBase]: For 421103/421135 co-relation queries the response was YES. [2024-06-27 18:23:19,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73039 conditions, 7405 events. 4066/7405 cut-off events. For 421103/421135 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 57903 event pairs, 483 based on Foata normal form. 33/7237 useless extension candidates. Maximal degree in co-relation 72784. Up to 5698 conditions per place. [2024-06-27 18:23:19,404 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 762 selfloop transitions, 189 changer transitions 0/960 dead transitions. [2024-06-27 18:23:19,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 960 transitions, 22475 flow [2024-06-27 18:23:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:23:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:23:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:23:19,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 18:23:19,405 INFO L175 Difference]: Start difference. First operand has 555 places, 928 transitions, 20357 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:23:19,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 960 transitions, 22475 flow [2024-06-27 18:23:23,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 960 transitions, 21960 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:23,845 INFO L231 Difference]: Finished difference. Result has 558 places, 928 transitions, 20228 flow [2024-06-27 18:23:23,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19842, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=739, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20228, PETRI_PLACES=558, PETRI_TRANSITIONS=928} [2024-06-27 18:23:23,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 516 predicate places. [2024-06-27 18:23:23,846 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 928 transitions, 20228 flow [2024-06-27 18:23:23,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:23,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:23,846 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 18:23:23,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:23:23,846 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:23,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1042897720, now seen corresponding path program 1 times [2024-06-27 18:23:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:23,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116202760] [2024-06-27 18:23:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:24,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116202760] [2024-06-27 18:23:24,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116202760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:24,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:24,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:24,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465527679] [2024-06-27 18:23:24,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:24,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:24,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:24,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:24,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:24,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:23:24,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 928 transitions, 20228 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:24,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:24,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:23:24,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:27,405 INFO L124 PetriNetUnfolderBase]: 4079/7408 cut-off events. [2024-06-27 18:23:27,405 INFO L125 PetriNetUnfolderBase]: For 430725/430753 co-relation queries the response was YES. [2024-06-27 18:23:27,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72859 conditions, 7408 events. 4079/7408 cut-off events. For 430725/430753 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 57925 event pairs, 868 based on Foata normal form. 30/7201 useless extension candidates. Maximal degree in co-relation 72603. Up to 6224 conditions per place. [2024-06-27 18:23:27,540 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 838 selfloop transitions, 123 changer transitions 0/970 dead transitions. [2024-06-27 18:23:27,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 970 transitions, 22401 flow [2024-06-27 18:23:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:23:27,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-27 18:23:27,542 INFO L175 Difference]: Start difference. First operand has 558 places, 928 transitions, 20228 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:23:27,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 970 transitions, 22401 flow [2024-06-27 18:23:31,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 970 transitions, 21826 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 18:23:31,937 INFO L231 Difference]: Finished difference. Result has 559 places, 933 transitions, 19979 flow [2024-06-27 18:23:31,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19653, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19979, PETRI_PLACES=559, PETRI_TRANSITIONS=933} [2024-06-27 18:23:31,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 517 predicate places. [2024-06-27 18:23:31,938 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 933 transitions, 19979 flow [2024-06-27 18:23:31,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:31,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:31,939 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 18:23:31,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:23:31,939 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:31,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1931939280, now seen corresponding path program 2 times [2024-06-27 18:23:31,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:31,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304159213] [2024-06-27 18:23:31,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:31,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:32,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:32,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:32,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304159213] [2024-06-27 18:23:32,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304159213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:32,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:32,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:32,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628464691] [2024-06-27 18:23:32,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:32,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:32,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:23:32,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 933 transitions, 19979 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:32,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:32,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:23:32,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:35,494 INFO L124 PetriNetUnfolderBase]: 4106/7463 cut-off events. [2024-06-27 18:23:35,495 INFO L125 PetriNetUnfolderBase]: For 434887/434917 co-relation queries the response was YES. [2024-06-27 18:23:35,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72253 conditions, 7463 events. 4106/7463 cut-off events. For 434887/434917 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 58477 event pairs, 870 based on Foata normal form. 32/7258 useless extension candidates. Maximal degree in co-relation 71997. Up to 6224 conditions per place. [2024-06-27 18:23:35,632 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 831 selfloop transitions, 135 changer transitions 0/975 dead transitions. [2024-06-27 18:23:35,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 975 transitions, 22155 flow [2024-06-27 18:23:35,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:23:35,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 18:23:35,633 INFO L175 Difference]: Start difference. First operand has 559 places, 933 transitions, 19979 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:23:35,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 975 transitions, 22155 flow [2024-06-27 18:23:40,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 975 transitions, 21995 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:23:40,081 INFO L231 Difference]: Finished difference. Result has 566 places, 936 transitions, 20171 flow [2024-06-27 18:23:40,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19820, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=798, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20171, PETRI_PLACES=566, PETRI_TRANSITIONS=936} [2024-06-27 18:23:40,081 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 524 predicate places. [2024-06-27 18:23:40,081 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 936 transitions, 20171 flow [2024-06-27 18:23:40,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:40,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:40,082 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 18:23:40,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:23:40,082 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:40,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:40,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2021517810, now seen corresponding path program 3 times [2024-06-27 18:23:40,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:40,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265707042] [2024-06-27 18:23:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:40,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:40,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:40,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265707042] [2024-06-27 18:23:40,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265707042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:40,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:40,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:40,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108058026] [2024-06-27 18:23:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:40,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:40,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:40,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:23:40,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 936 transitions, 20171 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:40,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:40,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:23:40,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:43,627 INFO L124 PetriNetUnfolderBase]: 4126/7501 cut-off events. [2024-06-27 18:23:43,627 INFO L125 PetriNetUnfolderBase]: For 440461/440495 co-relation queries the response was YES. [2024-06-27 18:23:43,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72985 conditions, 7501 events. 4126/7501 cut-off events. For 440461/440495 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 58826 event pairs, 888 based on Foata normal form. 36/7300 useless extension candidates. Maximal degree in co-relation 72727. Up to 6245 conditions per place. [2024-06-27 18:23:43,765 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 813 selfloop transitions, 156 changer transitions 0/978 dead transitions. [2024-06-27 18:23:43,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 978 transitions, 22369 flow [2024-06-27 18:23:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:23:43,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-27 18:23:43,766 INFO L175 Difference]: Start difference. First operand has 566 places, 936 transitions, 20171 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:23:43,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 978 transitions, 22369 flow [2024-06-27 18:23:48,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 978 transitions, 22064 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:48,632 INFO L231 Difference]: Finished difference. Result has 569 places, 938 transitions, 20247 flow [2024-06-27 18:23:48,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19866, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=780, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20247, PETRI_PLACES=569, PETRI_TRANSITIONS=938} [2024-06-27 18:23:48,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 527 predicate places. [2024-06-27 18:23:48,633 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 938 transitions, 20247 flow [2024-06-27 18:23:48,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:48,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:48,634 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 18:23:48,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:23:48,634 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:48,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:48,635 INFO L85 PathProgramCache]: Analyzing trace with hash 675451732, now seen corresponding path program 4 times [2024-06-27 18:23:48,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:48,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818174643] [2024-06-27 18:23:48,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:48,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:49,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818174643] [2024-06-27 18:23:49,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818174643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:49,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:49,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:23:49,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556181270] [2024-06-27 18:23:49,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:49,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:23:49,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:49,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:23:49,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:23:49,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:23:49,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 938 transitions, 20247 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:49,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:49,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:23:49,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:52,436 INFO L124 PetriNetUnfolderBase]: 4166/7579 cut-off events. [2024-06-27 18:23:52,437 INFO L125 PetriNetUnfolderBase]: For 449945/449981 co-relation queries the response was YES. [2024-06-27 18:23:52,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73434 conditions, 7579 events. 4166/7579 cut-off events. For 449945/449981 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 59608 event pairs, 841 based on Foata normal form. 38/7380 useless extension candidates. Maximal degree in co-relation 73175. Up to 6245 conditions per place. [2024-06-27 18:23:52,585 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 837 selfloop transitions, 139 changer transitions 0/985 dead transitions. [2024-06-27 18:23:52,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 985 transitions, 22497 flow [2024-06-27 18:23:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:23:52,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-27 18:23:52,586 INFO L175 Difference]: Start difference. First operand has 569 places, 938 transitions, 20247 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:23:52,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 985 transitions, 22497 flow [2024-06-27 18:23:57,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 985 transitions, 22195 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:57,373 INFO L231 Difference]: Finished difference. Result has 574 places, 947 transitions, 20404 flow [2024-06-27 18:23:57,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=19945, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=803, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20404, PETRI_PLACES=574, PETRI_TRANSITIONS=947} [2024-06-27 18:23:57,373 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 532 predicate places. [2024-06-27 18:23:57,373 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 947 transitions, 20404 flow [2024-06-27 18:23:57,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:57,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:57,373 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 18:23:57,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:23:57,374 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:57,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:57,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2021523762, now seen corresponding path program 1 times [2024-06-27 18:23:57,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:57,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022327464] [2024-06-27 18:23:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:57,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:58,359 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 18:23:58,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:58,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022327464] [2024-06-27 18:23:58,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022327464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:58,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:58,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:23:58,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229074123] [2024-06-27 18:23:58,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:58,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:23:58,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:58,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:23:58,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:23:58,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:23:58,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 947 transitions, 20404 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:58,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:58,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:23:58,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:01,896 INFO L124 PetriNetUnfolderBase]: 4188/7631 cut-off events. [2024-06-27 18:24:01,896 INFO L125 PetriNetUnfolderBase]: For 468544/468576 co-relation queries the response was YES. [2024-06-27 18:24:02,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75160 conditions, 7631 events. 4188/7631 cut-off events. For 468544/468576 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 60139 event pairs, 898 based on Foata normal form. 34/7425 useless extension candidates. Maximal degree in co-relation 74898. Up to 6380 conditions per place. [2024-06-27 18:24:02,072 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 849 selfloop transitions, 137 changer transitions 0/995 dead transitions. [2024-06-27 18:24:02,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 995 transitions, 22778 flow [2024-06-27 18:24:02,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:24:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:24:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:24:02,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-27 18:24:02,073 INFO L175 Difference]: Start difference. First operand has 574 places, 947 transitions, 20404 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:24:02,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 995 transitions, 22778 flow [2024-06-27 18:24:06,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 995 transitions, 22527 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 18:24:06,859 INFO L231 Difference]: Finished difference. Result has 579 places, 950 transitions, 20544 flow [2024-06-27 18:24:06,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20153, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20544, PETRI_PLACES=579, PETRI_TRANSITIONS=950} [2024-06-27 18:24:06,859 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 537 predicate places. [2024-06-27 18:24:06,860 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 950 transitions, 20544 flow [2024-06-27 18:24:06,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:06,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:06,860 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 18:24:06,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:24:06,860 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:06,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:06,860 INFO L85 PathProgramCache]: Analyzing trace with hash -101588928, now seen corresponding path program 5 times [2024-06-27 18:24:06,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:06,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140792308] [2024-06-27 18:24:06,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:06,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:07,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140792308] [2024-06-27 18:24:07,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140792308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:07,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:07,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:24:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29397455] [2024-06-27 18:24:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:07,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:24:07,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:07,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:24:07,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:24:07,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:24:07,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 950 transitions, 20544 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:07,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:07,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:24:07,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:11,282 INFO L124 PetriNetUnfolderBase]: 4240/7713 cut-off events. [2024-06-27 18:24:11,282 INFO L125 PetriNetUnfolderBase]: For 474589/474625 co-relation queries the response was YES. [2024-06-27 18:24:11,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75909 conditions, 7713 events. 4240/7713 cut-off events. For 474589/474625 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 60894 event pairs, 926 based on Foata normal form. 38/7514 useless extension candidates. Maximal degree in co-relation 75646. Up to 6484 conditions per place. [2024-06-27 18:24:11,490 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 868 selfloop transitions, 118 changer transitions 0/995 dead transitions. [2024-06-27 18:24:11,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 995 transitions, 22804 flow [2024-06-27 18:24:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:24:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:24:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:24:11,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 18:24:11,492 INFO L175 Difference]: Start difference. First operand has 579 places, 950 transitions, 20544 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:24:11,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 995 transitions, 22804 flow [2024-06-27 18:24:16,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 995 transitions, 22496 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 18:24:16,471 INFO L231 Difference]: Finished difference. Result has 584 places, 959 transitions, 20627 flow [2024-06-27 18:24:16,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20236, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20627, PETRI_PLACES=584, PETRI_TRANSITIONS=959} [2024-06-27 18:24:16,471 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 542 predicate places. [2024-06-27 18:24:16,472 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 959 transitions, 20627 flow [2024-06-27 18:24:16,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:16,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:16,472 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 18:24:16,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:24:16,472 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:16,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1160116830, now seen corresponding path program 6 times [2024-06-27 18:24:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:16,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212211495] [2024-06-27 18:24:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:17,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212211495] [2024-06-27 18:24:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212211495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:17,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:17,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:24:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741832988] [2024-06-27 18:24:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:17,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:24:17,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:24:17,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:24:17,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:24:17,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 959 transitions, 20627 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:17,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:17,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:24:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:20,148 INFO L124 PetriNetUnfolderBase]: 4253/7732 cut-off events. [2024-06-27 18:24:20,148 INFO L125 PetriNetUnfolderBase]: For 476475/476517 co-relation queries the response was YES. [2024-06-27 18:24:20,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75900 conditions, 7732 events. 4253/7732 cut-off events. For 476475/476517 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 61036 event pairs, 956 based on Foata normal form. 44/7539 useless extension candidates. Maximal degree in co-relation 75635. Up to 6569 conditions per place. [2024-06-27 18:24:20,301 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 906 selfloop transitions, 89 changer transitions 0/1004 dead transitions. [2024-06-27 18:24:20,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1004 transitions, 23117 flow [2024-06-27 18:24:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:24:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:24:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:24:20,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 18:24:20,302 INFO L175 Difference]: Start difference. First operand has 584 places, 959 transitions, 20627 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:24:20,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1004 transitions, 23117 flow [2024-06-27 18:24:26,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 1004 transitions, 22880 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:24:26,097 INFO L231 Difference]: Finished difference. Result has 589 places, 967 transitions, 20877 flow [2024-06-27 18:24:26,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20390, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=875, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20877, PETRI_PLACES=589, PETRI_TRANSITIONS=967} [2024-06-27 18:24:26,098 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 547 predicate places. [2024-06-27 18:24:26,098 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 967 transitions, 20877 flow [2024-06-27 18:24:26,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:26,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:26,098 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 18:24:26,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:24:26,098 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:26,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1497346172, now seen corresponding path program 2 times [2024-06-27 18:24:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:26,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371970432] [2024-06-27 18:24:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:27,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:27,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371970432] [2024-06-27 18:24:27,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371970432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:27,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:27,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:24:27,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960267017] [2024-06-27 18:24:27,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:27,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:24:27,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:24:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:24:27,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:24:27,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 967 transitions, 20877 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:27,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:27,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:24:27,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:30,331 INFO L124 PetriNetUnfolderBase]: 4289/7813 cut-off events. [2024-06-27 18:24:30,331 INFO L125 PetriNetUnfolderBase]: For 485376/485408 co-relation queries the response was YES. [2024-06-27 18:24:30,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76753 conditions, 7813 events. 4289/7813 cut-off events. For 485376/485408 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 61805 event pairs, 940 based on Foata normal form. 34/7606 useless extension candidates. Maximal degree in co-relation 76486. Up to 6541 conditions per place. [2024-06-27 18:24:30,489 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 870 selfloop transitions, 135 changer transitions 0/1014 dead transitions. [2024-06-27 18:24:30,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 1014 transitions, 23284 flow [2024-06-27 18:24:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:24:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:24:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:24:30,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-27 18:24:30,490 INFO L175 Difference]: Start difference. First operand has 589 places, 967 transitions, 20877 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:24:30,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 1014 transitions, 23284 flow [2024-06-27 18:24:35,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 1014 transitions, 23066 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 18:24:35,527 INFO L231 Difference]: Finished difference. Result has 593 places, 971 transitions, 21063 flow [2024-06-27 18:24:35,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20659, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21063, PETRI_PLACES=593, PETRI_TRANSITIONS=971} [2024-06-27 18:24:35,528 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 551 predicate places. [2024-06-27 18:24:35,528 INFO L495 AbstractCegarLoop]: Abstraction has has 593 places, 971 transitions, 21063 flow [2024-06-27 18:24:35,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:35,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:35,528 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 18:24:35,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:24:35,528 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:35,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:35,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1159909068, now seen corresponding path program 3 times [2024-06-27 18:24:35,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:35,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931910872] [2024-06-27 18:24:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:36,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:36,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931910872] [2024-06-27 18:24:36,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931910872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:36,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:36,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:24:36,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138153339] [2024-06-27 18:24:36,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:36,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:24:36,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:36,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:24:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:24:36,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:24:36,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 971 transitions, 21063 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:36,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:36,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:24:36,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:39,820 INFO L124 PetriNetUnfolderBase]: 4337/7877 cut-off events. [2024-06-27 18:24:39,820 INFO L125 PetriNetUnfolderBase]: For 520389/520425 co-relation queries the response was YES. [2024-06-27 18:24:40,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78562 conditions, 7877 events. 4337/7877 cut-off events. For 520389/520425 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 62311 event pairs, 936 based on Foata normal form. 38/7676 useless extension candidates. Maximal degree in co-relation 78294. Up to 6445 conditions per place. [2024-06-27 18:24:40,255 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 896 selfloop transitions, 118 changer transitions 0/1023 dead transitions. [2024-06-27 18:24:40,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 1023 transitions, 23918 flow [2024-06-27 18:24:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:24:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:24:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-27 18:24:40,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2024-06-27 18:24:40,256 INFO L175 Difference]: Start difference. First operand has 593 places, 971 transitions, 21063 flow. Second operand 12 states and 223 transitions. [2024-06-27 18:24:40,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 1023 transitions, 23918 flow [2024-06-27 18:24:45,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 1023 transitions, 23588 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 18:24:45,752 INFO L231 Difference]: Finished difference. Result has 596 places, 975 transitions, 21188 flow [2024-06-27 18:24:45,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20733, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21188, PETRI_PLACES=596, PETRI_TRANSITIONS=975} [2024-06-27 18:24:45,753 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 554 predicate places. [2024-06-27 18:24:45,753 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 975 transitions, 21188 flow [2024-06-27 18:24:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:45,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:45,753 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 18:24:45,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:24:45,753 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:45,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2054546098, now seen corresponding path program 4 times [2024-06-27 18:24:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230615248] [2024-06-27 18:24:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:46,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:46,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230615248] [2024-06-27 18:24:46,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230615248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:46,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:46,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:24:46,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977687611] [2024-06-27 18:24:46,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:46,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:24:46,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:46,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:24:46,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:24:47,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:24:47,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 975 transitions, 21188 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:47,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:47,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:24:47,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:50,817 INFO L124 PetriNetUnfolderBase]: 4346/7939 cut-off events. [2024-06-27 18:24:50,817 INFO L125 PetriNetUnfolderBase]: For 519115/519151 co-relation queries the response was YES. [2024-06-27 18:24:50,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78555 conditions, 7939 events. 4346/7939 cut-off events. For 519115/519151 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 63082 event pairs, 931 based on Foata normal form. 38/7726 useless extension candidates. Maximal degree in co-relation 78286. Up to 6456 conditions per place. [2024-06-27 18:24:51,052 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 896 selfloop transitions, 120 changer transitions 0/1025 dead transitions. [2024-06-27 18:24:51,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 1025 transitions, 23949 flow [2024-06-27 18:24:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:24:51,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:24:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-27 18:24:51,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48464912280701755 [2024-06-27 18:24:51,062 INFO L175 Difference]: Start difference. First operand has 596 places, 975 transitions, 21188 flow. Second operand 12 states and 221 transitions. [2024-06-27 18:24:51,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 1025 transitions, 23949 flow [2024-06-27 18:24:56,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 1025 transitions, 23672 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 18:24:56,081 INFO L231 Difference]: Finished difference. Result has 600 places, 978 transitions, 21300 flow [2024-06-27 18:24:56,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20933, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=857, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21300, PETRI_PLACES=600, PETRI_TRANSITIONS=978} [2024-06-27 18:24:56,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 558 predicate places. [2024-06-27 18:24:56,082 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 978 transitions, 21300 flow [2024-06-27 18:24:56,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:56,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:56,082 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 18:24:56,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:24:56,083 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:56,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1328247100, now seen corresponding path program 7 times [2024-06-27 18:24:56,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:56,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656733595] [2024-06-27 18:24:56,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:56,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:56,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:56,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656733595] [2024-06-27 18:24:56,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656733595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:56,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:56,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:24:56,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412386441] [2024-06-27 18:24:56,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:24:56,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:56,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:24:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:24:56,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:24:56,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 978 transitions, 21300 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:56,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:56,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:24:56,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:00,453 INFO L124 PetriNetUnfolderBase]: 4373/7952 cut-off events. [2024-06-27 18:25:00,453 INFO L125 PetriNetUnfolderBase]: For 514412/514448 co-relation queries the response was YES. [2024-06-27 18:25:00,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78748 conditions, 7952 events. 4373/7952 cut-off events. For 514412/514448 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 63040 event pairs, 992 based on Foata normal form. 38/7752 useless extension candidates. Maximal degree in co-relation 78477. Up to 6709 conditions per place. [2024-06-27 18:25:00,608 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 875 selfloop transitions, 129 changer transitions 0/1013 dead transitions. [2024-06-27 18:25:00,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 610 places, 1013 transitions, 23534 flow [2024-06-27 18:25:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:25:00,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-27 18:25:00,610 INFO L175 Difference]: Start difference. First operand has 600 places, 978 transitions, 21300 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:25:00,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 610 places, 1013 transitions, 23534 flow [2024-06-27 18:25:06,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 1013 transitions, 23224 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-27 18:25:06,174 INFO L231 Difference]: Finished difference. Result has 602 places, 981 transitions, 21339 flow [2024-06-27 18:25:06,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=20990, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=978, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21339, PETRI_PLACES=602, PETRI_TRANSITIONS=981} [2024-06-27 18:25:06,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 560 predicate places. [2024-06-27 18:25:06,175 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 981 transitions, 21339 flow [2024-06-27 18:25:06,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:06,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:06,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:06,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:25:06,176 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:06,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash -958658924, now seen corresponding path program 8 times [2024-06-27 18:25:06,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:06,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294675238] [2024-06-27 18:25:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:06,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:06,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294675238] [2024-06-27 18:25:06,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294675238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:06,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:06,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914001582] [2024-06-27 18:25:06,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:06,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:06,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:25:06,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 981 transitions, 21339 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:06,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:06,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:25:06,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:10,869 INFO L124 PetriNetUnfolderBase]: 4438/8075 cut-off events. [2024-06-27 18:25:10,869 INFO L125 PetriNetUnfolderBase]: For 519486/519522 co-relation queries the response was YES. [2024-06-27 18:25:10,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79141 conditions, 8075 events. 4438/8075 cut-off events. For 519486/519522 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 64398 event pairs, 1019 based on Foata normal form. 38/7875 useless extension candidates. Maximal degree in co-relation 78869. Up to 6831 conditions per place. [2024-06-27 18:25:11,148 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 916 selfloop transitions, 102 changer transitions 0/1027 dead transitions. [2024-06-27 18:25:11,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 1027 transitions, 23703 flow [2024-06-27 18:25:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:11,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:25:11,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-27 18:25:11,150 INFO L175 Difference]: Start difference. First operand has 602 places, 981 transitions, 21339 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:25:11,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 1027 transitions, 23703 flow [2024-06-27 18:25:17,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 1027 transitions, 23458 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:17,270 INFO L231 Difference]: Finished difference. Result has 607 places, 993 transitions, 21519 flow [2024-06-27 18:25:17,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=21094, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=981, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21519, PETRI_PLACES=607, PETRI_TRANSITIONS=993} [2024-06-27 18:25:17,272 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 565 predicate places. [2024-06-27 18:25:17,272 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 993 transitions, 21519 flow [2024-06-27 18:25:17,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:17,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:17,272 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 18:25:17,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:25:17,272 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:17,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:17,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2016120116, now seen corresponding path program 9 times [2024-06-27 18:25:17,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:17,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785056212] [2024-06-27 18:25:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:17,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:17,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785056212] [2024-06-27 18:25:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785056212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639080279] [2024-06-27 18:25:17,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:17,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:17,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:18,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:25:18,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 993 transitions, 21519 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:18,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:18,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:25:18,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:22,061 INFO L124 PetriNetUnfolderBase]: 4458/8107 cut-off events. [2024-06-27 18:25:22,061 INFO L125 PetriNetUnfolderBase]: For 526815/526859 co-relation queries the response was YES. [2024-06-27 18:25:22,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79517 conditions, 8107 events. 4458/8107 cut-off events. For 526815/526859 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 64661 event pairs, 1035 based on Foata normal form. 46/7915 useless extension candidates. Maximal degree in co-relation 79243. Up to 6906 conditions per place. [2024-06-27 18:25:22,258 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 939 selfloop transitions, 89 changer transitions 0/1037 dead transitions. [2024-06-27 18:25:22,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 1037 transitions, 24052 flow [2024-06-27 18:25:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:25:22,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 18:25:22,259 INFO L175 Difference]: Start difference. First operand has 607 places, 993 transitions, 21519 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:25:22,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 1037 transitions, 24052 flow [2024-06-27 18:25:28,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 1037 transitions, 23879 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:28,671 INFO L231 Difference]: Finished difference. Result has 613 places, 1002 transitions, 21832 flow [2024-06-27 18:25:28,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=21346, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=908, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21832, PETRI_PLACES=613, PETRI_TRANSITIONS=1002} [2024-06-27 18:25:28,672 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 571 predicate places. [2024-06-27 18:25:28,672 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 1002 transitions, 21832 flow [2024-06-27 18:25:28,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:28,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:28,672 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 18:25:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:25:28,673 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:28,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2107256972, now seen corresponding path program 5 times [2024-06-27 18:25:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:28,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311443137] [2024-06-27 18:25:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:29,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311443137] [2024-06-27 18:25:29,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311443137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:29,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:29,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:25:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416745884] [2024-06-27 18:25:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:25:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:29,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:25:29,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:25:29,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:25:29,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 1002 transitions, 21832 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:29,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:29,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:25:29,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:33,648 INFO L124 PetriNetUnfolderBase]: 4508/8194 cut-off events. [2024-06-27 18:25:33,648 INFO L125 PetriNetUnfolderBase]: For 538043/538082 co-relation queries the response was YES. [2024-06-27 18:25:33,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80612 conditions, 8194 events. 4508/8194 cut-off events. For 538043/538082 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 65426 event pairs, 1029 based on Foata normal form. 41/7997 useless extension candidates. Maximal degree in co-relation 80336. Up to 6831 conditions per place. [2024-06-27 18:25:33,807 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 870 selfloop transitions, 167 changer transitions 0/1046 dead transitions. [2024-06-27 18:25:33,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 1046 transitions, 24286 flow [2024-06-27 18:25:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:25:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:25:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-27 18:25:33,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-27 18:25:33,813 INFO L175 Difference]: Start difference. First operand has 613 places, 1002 transitions, 21832 flow. Second operand 12 states and 218 transitions. [2024-06-27 18:25:33,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 1046 transitions, 24286 flow [2024-06-27 18:25:40,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 1046 transitions, 24031 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 18:25:40,326 INFO L231 Difference]: Finished difference. Result has 615 places, 1008 transitions, 22086 flow [2024-06-27 18:25:40,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=21577, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=22086, PETRI_PLACES=615, PETRI_TRANSITIONS=1008} [2024-06-27 18:25:40,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 573 predicate places. [2024-06-27 18:25:40,326 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 1008 transitions, 22086 flow [2024-06-27 18:25:40,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:40,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:40,327 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 18:25:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:25:40,327 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:40,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2015912354, now seen corresponding path program 6 times [2024-06-27 18:25:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:40,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660896674] [2024-06-27 18:25:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660896674] [2024-06-27 18:25:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660896674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:41,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:41,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:25:41,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447856517] [2024-06-27 18:25:41,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:41,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:25:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:25:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:25:41,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:25:41,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 1008 transitions, 22086 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:41,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:41,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:25:41,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:45,567 INFO L124 PetriNetUnfolderBase]: 4546/8284 cut-off events. [2024-06-27 18:25:45,567 INFO L125 PetriNetUnfolderBase]: For 553268/553304 co-relation queries the response was YES. [2024-06-27 18:25:45,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81847 conditions, 8284 events. 4546/8284 cut-off events. For 553268/553304 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 66416 event pairs, 1018 based on Foata normal form. 37/8079 useless extension candidates. Maximal degree in co-relation 81570. Up to 6876 conditions per place. [2024-06-27 18:25:45,735 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 933 selfloop transitions, 115 changer transitions 0/1057 dead transitions. [2024-06-27 18:25:45,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1057 transitions, 24958 flow [2024-06-27 18:25:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:25:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:25:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-27 18:25:45,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 18:25:45,736 INFO L175 Difference]: Start difference. First operand has 615 places, 1008 transitions, 22086 flow. Second operand 12 states and 220 transitions. [2024-06-27 18:25:45,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 1057 transitions, 24958 flow [2024-06-27 18:25:51,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 1057 transitions, 24549 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-27 18:25:51,919 INFO L231 Difference]: Finished difference. Result has 618 places, 1015 transitions, 22194 flow [2024-06-27 18:25:51,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=21677, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=895, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=22194, PETRI_PLACES=618, PETRI_TRANSITIONS=1015} [2024-06-27 18:25:51,920 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 576 predicate places. [2024-06-27 18:25:51,920 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1015 transitions, 22194 flow [2024-06-27 18:25:51,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:51,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:51,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:51,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:25:51,920 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:51,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1978934345, now seen corresponding path program 1 times [2024-06-27 18:25:51,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:51,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268148931] [2024-06-27 18:25:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:51,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:52,789 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 18:25:52,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268148931] [2024-06-27 18:25:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268148931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:52,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:52,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:25:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909765803] [2024-06-27 18:25:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:52,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:25:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:25:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:25:52,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:25:52,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1015 transitions, 22194 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:52,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:52,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:25:52,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:56,578 INFO L124 PetriNetUnfolderBase]: 4582/8320 cut-off events. [2024-06-27 18:25:56,578 INFO L125 PetriNetUnfolderBase]: For 564028/564064 co-relation queries the response was YES. [2024-06-27 18:25:56,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82357 conditions, 8320 events. 4582/8320 cut-off events. For 564028/564064 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 66513 event pairs, 1028 based on Foata normal form. 38/8118 useless extension candidates. Maximal degree in co-relation 82078. Up to 6952 conditions per place. [2024-06-27 18:25:56,725 INFO L140 encePairwiseOnDemand]: 22/38 looper letters, 939 selfloop transitions, 114 changer transitions 0/1062 dead transitions. [2024-06-27 18:25:56,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 1062 transitions, 24741 flow [2024-06-27 18:25:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:25:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:25:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-27 18:25:56,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:25:56,726 INFO L175 Difference]: Start difference. First operand has 618 places, 1015 transitions, 22194 flow. Second operand 12 states and 219 transitions. [2024-06-27 18:25:56,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 1062 transitions, 24741 flow [2024-06-27 18:26:02,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 1062 transitions, 24472 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 18:26:02,934 INFO L231 Difference]: Finished difference. Result has 622 places, 1021 transitions, 22360 flow [2024-06-27 18:26:02,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=21925, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=22360, PETRI_PLACES=622, PETRI_TRANSITIONS=1021} [2024-06-27 18:26:02,935 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 580 predicate places. [2024-06-27 18:26:02,935 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 1021 transitions, 22360 flow [2024-06-27 18:26:02,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:02,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:02,936 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 18:26:02,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:26:02,936 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:26:02,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:02,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1978942994, now seen corresponding path program 7 times [2024-06-27 18:26:02,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:02,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655097156] [2024-06-27 18:26:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:02,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655097156] [2024-06-27 18:26:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655097156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:04,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:26:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731190727] [2024-06-27 18:26:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:04,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:26:04,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:26:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:26:04,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:26:04,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 1021 transitions, 22360 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:04,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:04,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:26:04,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand