./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix012_pso.opt_tso.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix012_pso.opt_tso.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-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:08:24,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:08:24,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:08:24,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:08:24,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:08:24,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:08:24,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:08:24,294 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:08:24,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:08:24,298 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:08:24,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:08:24,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:08:24,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:08:24,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:08:24,300 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:08:24,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:08:24,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:08:24,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:08:24,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:08:24,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:08:24,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:08:24,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:08:24,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:08:24,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:08:24,303 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:08:24,303 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:08:24,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:08:24,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:08:24,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:08:24,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:08:24,305 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:08:24,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:08:24,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:08:24,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:08:24,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:08:24,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:08:24,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:08:24,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:08:24,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:08:24,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:08:24,306 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:08:24,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:08:24,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:08:24,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:08:24,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:08:24,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:08:24,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:08:24,529 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:08:24,530 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:08:24,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml [2024-05-12 13:08:24,643 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:08:24,644 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:08:24,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-05-12 13:08:25,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:08:25,916 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:08:25,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-05-12 13:08:25,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad1c61a1/2628188c60c642709a715d9cc6ee9dff/FLAG37f4c1412 [2024-05-12 13:08:26,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cad1c61a1/2628188c60c642709a715d9cc6ee9dff [2024-05-12 13:08:26,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:08:26,002 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:08:26,006 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:08:26,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:08:26,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:08:26,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:08:24" (1/2) ... [2024-05-12 13:08:26,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a98e4f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:08:26, skipping insertion in model container [2024-05-12 13:08:26,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:08:24" (1/2) ... [2024-05-12 13:08:26,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f3495de and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:08:26, skipping insertion in model container [2024-05-12 13:08:26,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:08:26" (2/2) ... [2024-05-12 13:08:26,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a98e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26, skipping insertion in model container [2024-05-12 13:08:26,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:08:26" (2/2) ... [2024-05-12 13:08:26,016 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:08:26,071 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:08:26,073 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-05-12 13:08:26,073 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-05-12 13:08:26,073 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:08:26,073 INFO L106 edCorrectnessWitness]: ghost_update [L822-L822] multithreaded = 1; [2024-05-12 13:08:26,114 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:08:26,261 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i[999,1012] [2024-05-12 13:08:26,425 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:08:26,432 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:08:26,459 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i[999,1012] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:08:26,511 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:08:26,539 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:08:26,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26 WrapperNode [2024-05-12 13:08:26,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:08:26,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:08:26,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:08:26,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:08:26,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,589 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2024-05-12 13:08:26,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:08:26,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:08:26,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:08:26,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:08:26,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,621 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 13:08:26,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:08:26,638 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:08:26,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:08:26,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:08:26,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (1/1) ... [2024-05-12 13:08:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:08:26,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:08:26,668 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) [2024-05-12 13:08:26,730 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 [2024-05-12 13:08:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:08:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:08:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:08:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:08:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:08:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:08:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:08:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:08:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:08:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:08:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:08:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:08:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:08:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:08:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:08:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:08:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:08:26,754 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:08:26,881 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:08:26,883 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:08:27,179 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:08:27,179 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:08:27,310 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:08:27,311 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:08:27,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:08:27 BoogieIcfgContainer [2024-05-12 13:08:27,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:08:27,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:08:27,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:08:27,315 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:08:27,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:08:24" (1/4) ... [2024-05-12 13:08:27,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f8d270 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:08:27, skipping insertion in model container [2024-05-12 13:08:27,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:08:26" (2/4) ... [2024-05-12 13:08:27,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f8d270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:08:27, skipping insertion in model container [2024-05-12 13:08:27,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:08:26" (3/4) ... [2024-05-12 13:08:27,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f8d270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:08:27, skipping insertion in model container [2024-05-12 13:08:27,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:08:27" (4/4) ... [2024-05-12 13:08:27,318 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_pso.opt_tso.opt.i [2024-05-12 13:08:27,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:08:27,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 13:08:27,331 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:08:27,363 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:08:27,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-05-12 13:08:27,405 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-05-12 13:08:27,406 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:08:27,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-05-12 13:08:27,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-05-12 13:08:27,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-05-12 13:08:27,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:08:27,422 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;@6ed8a6bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:08:27,422 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 13:08:27,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:08:27,425 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-05-12 13:08:27,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:08:27,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:27,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:08:27,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:27,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:27,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1885935685, now seen corresponding path program 1 times [2024-05-12 13:08:27,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065323030] [2024-05-12 13:08:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:27,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:28,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065323030] [2024-05-12 13:08:28,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065323030] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:28,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:28,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:08:28,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169483188] [2024-05-12 13:08:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:28,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:08:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:28,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:08:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:08:28,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-05-12 13:08:28,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:28,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:28,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-05-12 13:08:28,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:28,526 INFO L124 PetriNetUnfolderBase]: 384/792 cut-off events. [2024-05-12 13:08:28,527 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-05-12 13:08:28,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 792 events. 384/792 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4453 event pairs, 284 based on Foata normal form. 31/739 useless extension candidates. Maximal degree in co-relation 1444. Up to 639 conditions per place. [2024-05-12 13:08:28,536 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 31 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-05-12 13:08:28,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 169 flow [2024-05-12 13:08:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:08:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:08:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-05-12 13:08:28,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-05-12 13:08:28,548 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 75 transitions. [2024-05-12 13:08:28,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 169 flow [2024-05-12 13:08:28,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:08:28,553 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-05-12 13:08:28,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-05-12 13:08:28,557 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-05-12 13:08:28,558 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-05-12 13:08:28,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:28,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:28,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:28,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:08:28,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:28,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:28,559 INFO L85 PathProgramCache]: Analyzing trace with hash -91695216, now seen corresponding path program 1 times [2024-05-12 13:08:28,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:28,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665104500] [2024-05-12 13:08:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:28,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:28,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:28,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665104500] [2024-05-12 13:08:28,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665104500] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:28,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:28,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:08:28,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287262336] [2024-05-12 13:08:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:28,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:08:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:28,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:08:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:08:28,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-05-12 13:08:28,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:28,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:28,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-05-12 13:08:28,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:29,156 INFO L124 PetriNetUnfolderBase]: 434/777 cut-off events. [2024-05-12 13:08:29,156 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-05-12 13:08:29,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1707 conditions, 777 events. 434/777 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3930 event pairs, 104 based on Foata normal form. 4/737 useless extension candidates. Maximal degree in co-relation 1692. Up to 686 conditions per place. [2024-05-12 13:08:29,160 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 41 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-05-12 13:08:29,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 244 flow [2024-05-12 13:08:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:08:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:08:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-05-12 13:08:29,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6351351351351351 [2024-05-12 13:08:29,176 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 94 transitions. [2024-05-12 13:08:29,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 244 flow [2024-05-12 13:08:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 57 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:08:29,177 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-05-12 13:08:29,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-05-12 13:08:29,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-05-12 13:08:29,178 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-05-12 13:08:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:29,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:29,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:29,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:08:29,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:29,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1443166870, now seen corresponding path program 1 times [2024-05-12 13:08:29,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:29,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394501630] [2024-05-12 13:08:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:29,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394501630] [2024-05-12 13:08:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394501630] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:08:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342679757] [2024-05-12 13:08:29,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:29,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:08:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:29,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:08:29,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:08:29,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-05-12 13:08:29,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:29,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:29,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-05-12 13:08:29,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:29,315 INFO L124 PetriNetUnfolderBase]: 163/382 cut-off events. [2024-05-12 13:08:29,316 INFO L125 PetriNetUnfolderBase]: For 113/120 co-relation queries the response was YES. [2024-05-12 13:08:29,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 382 events. 163/382 cut-off events. For 113/120 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2030 event pairs, 38 based on Foata normal form. 7/373 useless extension candidates. Maximal degree in co-relation 775. Up to 240 conditions per place. [2024-05-12 13:08:29,317 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 22 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-05-12 13:08:29,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 183 flow [2024-05-12 13:08:29,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:08:29,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:08:29,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-05-12 13:08:29,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-05-12 13:08:29,319 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 3 states and 77 transitions. [2024-05-12 13:08:29,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 183 flow [2024-05-12 13:08:29,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 13:08:29,321 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 114 flow [2024-05-12 13:08:29,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-05-12 13:08:29,322 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-05-12 13:08:29,322 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 114 flow [2024-05-12 13:08:29,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:29,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:29,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:29,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:08:29,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:29,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash 223642659, now seen corresponding path program 1 times [2024-05-12 13:08:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:29,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728591772] [2024-05-12 13:08:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:29,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:30,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728591772] [2024-05-12 13:08:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728591772] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:30,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:30,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:08:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250640299] [2024-05-12 13:08:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:30,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:08:30,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:08:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:08:30,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-05-12 13:08:30,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:30,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:30,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-05-12 13:08:30,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:30,373 INFO L124 PetriNetUnfolderBase]: 375/650 cut-off events. [2024-05-12 13:08:30,373 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-05-12 13:08:30,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 650 events. 375/650 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3060 event pairs, 25 based on Foata normal form. 4/652 useless extension candidates. Maximal degree in co-relation 1528. Up to 554 conditions per place. [2024-05-12 13:08:30,376 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 46 selfloop transitions, 8 changer transitions 5/68 dead transitions. [2024-05-12 13:08:30,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 300 flow [2024-05-12 13:08:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:08:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:08:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-05-12 13:08:30,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5720720720720721 [2024-05-12 13:08:30,378 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 114 flow. Second operand 6 states and 127 transitions. [2024-05-12 13:08:30,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 300 flow [2024-05-12 13:08:30,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:08:30,379 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 129 flow [2024-05-12 13:08:30,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-05-12 13:08:30,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 7 predicate places. [2024-05-12 13:08:30,380 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 129 flow [2024-05-12 13:08:30,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:30,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:30,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:30,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:08:30,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:30,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:30,382 INFO L85 PathProgramCache]: Analyzing trace with hash -392077599, now seen corresponding path program 1 times [2024-05-12 13:08:30,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:30,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356110663] [2024-05-12 13:08:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:30,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:30,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356110663] [2024-05-12 13:08:30,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356110663] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:30,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:30,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:08:30,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536646242] [2024-05-12 13:08:30,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:30,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:08:30,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:30,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:08:30,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:08:30,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-05-12 13:08:30,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:30,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:30,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-05-12 13:08:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:31,088 INFO L124 PetriNetUnfolderBase]: 318/672 cut-off events. [2024-05-12 13:08:31,088 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-05-12 13:08:31,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 672 events. 318/672 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3518 event pairs, 107 based on Foata normal form. 1/647 useless extension candidates. Maximal degree in co-relation 1547. Up to 524 conditions per place. [2024-05-12 13:08:31,091 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 37 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-05-12 13:08:31,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 264 flow [2024-05-12 13:08:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:08:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:08:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-05-12 13:08:31,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-05-12 13:08:31,093 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 129 flow. Second operand 5 states and 94 transitions. [2024-05-12 13:08:31,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 264 flow [2024-05-12 13:08:31,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 244 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-05-12 13:08:31,095 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 165 flow [2024-05-12 13:08:31,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-05-12 13:08:31,096 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-05-12 13:08:31,096 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 165 flow [2024-05-12 13:08:31,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:31,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:31,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:31,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:08:31,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:31,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:31,097 INFO L85 PathProgramCache]: Analyzing trace with hash 760884168, now seen corresponding path program 1 times [2024-05-12 13:08:31,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:31,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814462955] [2024-05-12 13:08:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:31,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:31,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814462955] [2024-05-12 13:08:31,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814462955] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:31,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:31,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:08:31,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979243664] [2024-05-12 13:08:31,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:31,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:08:31,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:08:31,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:08:31,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-05-12 13:08:31,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 165 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:31,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:31,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-05-12 13:08:31,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:32,027 INFO L124 PetriNetUnfolderBase]: 320/656 cut-off events. [2024-05-12 13:08:32,027 INFO L125 PetriNetUnfolderBase]: For 534/534 co-relation queries the response was YES. [2024-05-12 13:08:32,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 656 events. 320/656 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3411 event pairs, 103 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 1633. Up to 506 conditions per place. [2024-05-12 13:08:32,031 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 43 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2024-05-12 13:08:32,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 317 flow [2024-05-12 13:08:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:08:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:08:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-05-12 13:08:32,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509009009009009 [2024-05-12 13:08:32,033 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 165 flow. Second operand 6 states and 113 transitions. [2024-05-12 13:08:32,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 317 flow [2024-05-12 13:08:32,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 308 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 13:08:32,035 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 191 flow [2024-05-12 13:08:32,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-05-12 13:08:32,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-05-12 13:08:32,035 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 191 flow [2024-05-12 13:08:32,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:32,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:32,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:32,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:08:32,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:32,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1164829760, now seen corresponding path program 1 times [2024-05-12 13:08:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:32,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960341987] [2024-05-12 13:08:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:32,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:32,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:32,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960341987] [2024-05-12 13:08:32,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960341987] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:32,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:08:32,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632171416] [2024-05-12 13:08:32,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:32,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:08:32,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:08:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:08:32,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:32,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-05-12 13:08:32,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:32,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:32,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:32,849 INFO L124 PetriNetUnfolderBase]: 401/797 cut-off events. [2024-05-12 13:08:32,849 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-05-12 13:08:32,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 797 events. 401/797 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4194 event pairs, 127 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 2104. Up to 633 conditions per place. [2024-05-12 13:08:32,853 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 49 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-05-12 13:08:32,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 375 flow [2024-05-12 13:08:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:08:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:08:32,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-05-12 13:08:32,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-05-12 13:08:32,855 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 191 flow. Second operand 6 states and 110 transitions. [2024-05-12 13:08:32,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 375 flow [2024-05-12 13:08:32,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 356 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 13:08:32,862 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 233 flow [2024-05-12 13:08:32,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-05-12 13:08:32,863 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-05-12 13:08:32,863 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 233 flow [2024-05-12 13:08:32,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-05-12 13:08:32,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:32,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:32,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:08:32,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:32,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:32,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1170573440, now seen corresponding path program 2 times [2024-05-12 13:08:32,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:32,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038165471] [2024-05-12 13:08:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:32,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:33,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:33,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038165471] [2024-05-12 13:08:33,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038165471] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:33,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:33,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:08:33,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620276845] [2024-05-12 13:08:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:33,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:08:33,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:08:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:08:33,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:33,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-05-12 13:08:33,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:33,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:33,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:33,624 INFO L124 PetriNetUnfolderBase]: 413/820 cut-off events. [2024-05-12 13:08:33,624 INFO L125 PetriNetUnfolderBase]: For 1250/1254 co-relation queries the response was YES. [2024-05-12 13:08:33,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 820 events. 413/820 cut-off events. For 1250/1254 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4358 event pairs, 123 based on Foata normal form. 6/797 useless extension candidates. Maximal degree in co-relation 2300. Up to 621 conditions per place. [2024-05-12 13:08:33,629 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 48 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-05-12 13:08:33,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 69 transitions, 417 flow [2024-05-12 13:08:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:08:33,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:08:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-05-12 13:08:33,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:08:33,634 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 233 flow. Second operand 6 states and 111 transitions. [2024-05-12 13:08:33,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 69 transitions, 417 flow [2024-05-12 13:08:33,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 398 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 13:08:33,636 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 261 flow [2024-05-12 13:08:33,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-05-12 13:08:33,639 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-05-12 13:08:33,639 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 261 flow [2024-05-12 13:08:33,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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) [2024-05-12 13:08:33,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:33,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:33,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:08:33,640 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:33,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1873519960, now seen corresponding path program 1 times [2024-05-12 13:08:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:33,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652314034] [2024-05-12 13:08:33,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:33,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:34,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:34,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652314034] [2024-05-12 13:08:34,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652314034] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:34,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:34,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:08:34,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827301886] [2024-05-12 13:08:34,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:34,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:08:34,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:34,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:08:34,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:08:34,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:34,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 261 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:34,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:34,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:34,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:34,800 INFO L124 PetriNetUnfolderBase]: 460/926 cut-off events. [2024-05-12 13:08:34,801 INFO L125 PetriNetUnfolderBase]: For 1707/1707 co-relation queries the response was YES. [2024-05-12 13:08:34,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2774 conditions, 926 events. 460/926 cut-off events. For 1707/1707 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5059 event pairs, 124 based on Foata normal form. 1/893 useless extension candidates. Maximal degree in co-relation 2747. Up to 687 conditions per place. [2024-05-12 13:08:34,805 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 64 selfloop transitions, 22 changer transitions 0/94 dead transitions. [2024-05-12 13:08:34,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 597 flow [2024-05-12 13:08:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-05-12 13:08:34,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033783783783784 [2024-05-12 13:08:34,806 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 261 flow. Second operand 8 states and 149 transitions. [2024-05-12 13:08:34,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 597 flow [2024-05-12 13:08:34,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 560 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:08:34,810 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 377 flow [2024-05-12 13:08:34,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=377, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-05-12 13:08:34,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-05-12 13:08:34,811 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 377 flow [2024-05-12 13:08:34,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:34,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:34,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:34,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:08:34,814 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:34,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:34,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1199536516, now seen corresponding path program 2 times [2024-05-12 13:08:34,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:34,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230123218] [2024-05-12 13:08:34,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:34,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:35,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:35,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230123218] [2024-05-12 13:08:35,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230123218] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:35,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:35,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:08:35,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122878456] [2024-05-12 13:08:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:08:35,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:08:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:08:35,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:35,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 377 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:35,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:35,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:35,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:35,951 INFO L124 PetriNetUnfolderBase]: 461/904 cut-off events. [2024-05-12 13:08:35,951 INFO L125 PetriNetUnfolderBase]: For 2199/2199 co-relation queries the response was YES. [2024-05-12 13:08:35,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2950 conditions, 904 events. 461/904 cut-off events. For 2199/2199 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4912 event pairs, 122 based on Foata normal form. 1/877 useless extension candidates. Maximal degree in co-relation 2920. Up to 672 conditions per place. [2024-05-12 13:08:35,958 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 60 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2024-05-12 13:08:35,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 651 flow [2024-05-12 13:08:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-05-12 13:08:35,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057915057915058 [2024-05-12 13:08:35,959 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 377 flow. Second operand 7 states and 131 transitions. [2024-05-12 13:08:35,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 651 flow [2024-05-12 13:08:35,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 618 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 13:08:35,964 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 425 flow [2024-05-12 13:08:35,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-05-12 13:08:35,964 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-05-12 13:08:35,964 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 425 flow [2024-05-12 13:08:35,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:35,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:35,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:35,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:08:35,965 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:35,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1199657633, now seen corresponding path program 1 times [2024-05-12 13:08:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309210773] [2024-05-12 13:08:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:36,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:36,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309210773] [2024-05-12 13:08:36,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309210773] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:36,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:36,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:08:36,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990699782] [2024-05-12 13:08:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:36,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:08:36,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:36,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:08:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:08:36,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:36,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 425 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:36,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:36,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:36,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:37,102 INFO L124 PetriNetUnfolderBase]: 483/937 cut-off events. [2024-05-12 13:08:37,102 INFO L125 PetriNetUnfolderBase]: For 2976/2976 co-relation queries the response was YES. [2024-05-12 13:08:37,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 937 events. 483/937 cut-off events. For 2976/2976 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5100 event pairs, 131 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 3141. Up to 732 conditions per place. [2024-05-12 13:08:37,110 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 69 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-05-12 13:08:37,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 691 flow [2024-05-12 13:08:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-05-12 13:08:37,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-05-12 13:08:37,112 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 425 flow. Second operand 7 states and 128 transitions. [2024-05-12 13:08:37,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 691 flow [2024-05-12 13:08:37,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 92 transitions, 630 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:37,119 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 424 flow [2024-05-12 13:08:37,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-05-12 13:08:37,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-05-12 13:08:37,120 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 424 flow [2024-05-12 13:08:37,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:37,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:37,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:37,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:08:37,121 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:37,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1065002249, now seen corresponding path program 2 times [2024-05-12 13:08:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30254702] [2024-05-12 13:08:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:37,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:37,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:37,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30254702] [2024-05-12 13:08:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30254702] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:37,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:37,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:08:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151459627] [2024-05-12 13:08:37,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:08:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:37,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:08:37,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:08:37,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:37,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 424 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:37,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:37,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:37,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:38,173 INFO L124 PetriNetUnfolderBase]: 505/993 cut-off events. [2024-05-12 13:08:38,173 INFO L125 PetriNetUnfolderBase]: For 2896/2900 co-relation queries the response was YES. [2024-05-12 13:08:38,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3356 conditions, 993 events. 505/993 cut-off events. For 2896/2900 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5459 event pairs, 123 based on Foata normal form. 6/965 useless extension candidates. Maximal degree in co-relation 3324. Up to 735 conditions per place. [2024-05-12 13:08:38,179 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 70 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-05-12 13:08:38,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 712 flow [2024-05-12 13:08:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-05-12 13:08:38,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-05-12 13:08:38,181 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 424 flow. Second operand 7 states and 129 transitions. [2024-05-12 13:08:38,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 712 flow [2024-05-12 13:08:38,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 676 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:38,186 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 458 flow [2024-05-12 13:08:38,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-05-12 13:08:38,187 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-05-12 13:08:38,187 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 458 flow [2024-05-12 13:08:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:38,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:38,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:38,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:08:38,189 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:38,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1204335533, now seen corresponding path program 3 times [2024-05-12 13:08:38,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:38,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268745623] [2024-05-12 13:08:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:38,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:38,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:38,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268745623] [2024-05-12 13:08:38,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268745623] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:38,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:38,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:08:38,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798410307] [2024-05-12 13:08:38,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:38,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:08:38,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:38,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:08:38,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:08:38,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:38,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 458 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:38,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:38,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:38,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:39,193 INFO L124 PetriNetUnfolderBase]: 506/1007 cut-off events. [2024-05-12 13:08:39,193 INFO L125 PetriNetUnfolderBase]: For 3354/3358 co-relation queries the response was YES. [2024-05-12 13:08:39,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3543 conditions, 1007 events. 506/1007 cut-off events. For 3354/3358 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5635 event pairs, 125 based on Foata normal form. 5/974 useless extension candidates. Maximal degree in co-relation 3510. Up to 693 conditions per place. [2024-05-12 13:08:39,218 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 67 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2024-05-12 13:08:39,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 750 flow [2024-05-12 13:08:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:08:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:08:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-05-12 13:08:39,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-05-12 13:08:39,220 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 458 flow. Second operand 7 states and 129 transitions. [2024-05-12 13:08:39,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 750 flow [2024-05-12 13:08:39,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 702 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:39,227 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 504 flow [2024-05-12 13:08:39,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-05-12 13:08:39,228 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-05-12 13:08:39,228 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 504 flow [2024-05-12 13:08:39,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:39,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:39,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:39,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:08:39,229 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:39,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:39,229 INFO L85 PathProgramCache]: Analyzing trace with hash -552524323, now seen corresponding path program 1 times [2024-05-12 13:08:39,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:39,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901094257] [2024-05-12 13:08:39,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:39,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:40,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:40,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901094257] [2024-05-12 13:08:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901094257] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:40,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:40,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830376953] [2024-05-12 13:08:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:40,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:40,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 504 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) [2024-05-12 13:08:40,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:40,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:40,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:40,478 INFO L124 PetriNetUnfolderBase]: 523/1023 cut-off events. [2024-05-12 13:08:40,479 INFO L125 PetriNetUnfolderBase]: For 3945/3945 co-relation queries the response was YES. [2024-05-12 13:08:40,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3837 conditions, 1023 events. 523/1023 cut-off events. For 3945/3945 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5722 event pairs, 135 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 3802. Up to 776 conditions per place. [2024-05-12 13:08:40,485 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 85 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2024-05-12 13:08:40,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 910 flow [2024-05-12 13:08:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-05-12 13:08:40,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-05-12 13:08:40,486 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 504 flow. Second operand 8 states and 145 transitions. [2024-05-12 13:08:40,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 910 flow [2024-05-12 13:08:40,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 116 transitions, 882 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 13:08:40,492 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 670 flow [2024-05-12 13:08:40,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=670, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-05-12 13:08:40,492 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-05-12 13:08:40,492 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 670 flow [2024-05-12 13:08:40,493 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) [2024-05-12 13:08:40,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:40,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:40,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:08:40,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:40,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1465317981, now seen corresponding path program 1 times [2024-05-12 13:08:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980848755] [2024-05-12 13:08:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:41,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:41,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980848755] [2024-05-12 13:08:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980848755] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:41,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:41,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990966255] [2024-05-12 13:08:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:41,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:41,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:41,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:41,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:41,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 670 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) [2024-05-12 13:08:41,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:41,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:41,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:41,730 INFO L124 PetriNetUnfolderBase]: 545/1046 cut-off events. [2024-05-12 13:08:41,730 INFO L125 PetriNetUnfolderBase]: For 4908/4908 co-relation queries the response was YES. [2024-05-12 13:08:41,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4246 conditions, 1046 events. 545/1046 cut-off events. For 4908/4908 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5762 event pairs, 131 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 4207. Up to 807 conditions per place. [2024-05-12 13:08:41,736 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 94 selfloop transitions, 18 changer transitions 0/120 dead transitions. [2024-05-12 13:08:41,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 1030 flow [2024-05-12 13:08:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 13:08:41,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-05-12 13:08:41,737 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 670 flow. Second operand 8 states and 146 transitions. [2024-05-12 13:08:41,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 1030 flow [2024-05-12 13:08:41,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 120 transitions, 982 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 13:08:41,744 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 698 flow [2024-05-12 13:08:41,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2024-05-12 13:08:41,744 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-05-12 13:08:41,744 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 698 flow [2024-05-12 13:08:41,744 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) [2024-05-12 13:08:41,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:41,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:41,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:08:41,745 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:41,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1585032185, now seen corresponding path program 2 times [2024-05-12 13:08:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:41,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564575401] [2024-05-12 13:08:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:41,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:42,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:42,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564575401] [2024-05-12 13:08:42,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564575401] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:42,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:42,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:42,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763122271] [2024-05-12 13:08:42,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:42,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:42,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:42,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:42,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 698 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) [2024-05-12 13:08:42,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:42,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:42,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:43,146 INFO L124 PetriNetUnfolderBase]: 556/1077 cut-off events. [2024-05-12 13:08:43,147 INFO L125 PetriNetUnfolderBase]: For 5636/5636 co-relation queries the response was YES. [2024-05-12 13:08:43,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4509 conditions, 1077 events. 556/1077 cut-off events. For 5636/5636 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6063 event pairs, 133 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 4469. Up to 835 conditions per place. [2024-05-12 13:08:43,154 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 97 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2024-05-12 13:08:43,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 122 transitions, 1064 flow [2024-05-12 13:08:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:43,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-05-12 13:08:43,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-05-12 13:08:43,155 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 698 flow. Second operand 8 states and 145 transitions. [2024-05-12 13:08:43,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 122 transitions, 1064 flow [2024-05-12 13:08:43,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 122 transitions, 1010 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-05-12 13:08:43,163 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 715 flow [2024-05-12 13:08:43,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=715, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2024-05-12 13:08:43,164 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-05-12 13:08:43,164 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 715 flow [2024-05-12 13:08:43,164 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) [2024-05-12 13:08:43,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:43,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:43,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:08:43,165 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:43,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1344667837, now seen corresponding path program 3 times [2024-05-12 13:08:43,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:43,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590933701] [2024-05-12 13:08:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:44,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:44,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590933701] [2024-05-12 13:08:44,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590933701] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:44,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:44,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:44,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155832683] [2024-05-12 13:08:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:44,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:44,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:44,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:44,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:44,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:44,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 715 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) [2024-05-12 13:08:44,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:44,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:44,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:44,682 INFO L124 PetriNetUnfolderBase]: 567/1138 cut-off events. [2024-05-12 13:08:44,682 INFO L125 PetriNetUnfolderBase]: For 6554/6560 co-relation queries the response was YES. [2024-05-12 13:08:44,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 1138 events. 567/1138 cut-off events. For 6554/6560 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6447 event pairs, 122 based on Foata normal form. 7/1102 useless extension candidates. Maximal degree in co-relation 4666. Up to 821 conditions per place. [2024-05-12 13:08:44,689 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 97 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-05-12 13:08:44,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 125 transitions, 1107 flow [2024-05-12 13:08:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 13:08:44,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-05-12 13:08:44,693 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 715 flow. Second operand 8 states and 146 transitions. [2024-05-12 13:08:44,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 125 transitions, 1107 flow [2024-05-12 13:08:44,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 1052 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 13:08:44,704 INFO L231 Difference]: Finished difference. Result has 92 places, 95 transitions, 741 flow [2024-05-12 13:08:44,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=92, PETRI_TRANSITIONS=95} [2024-05-12 13:08:44,705 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-05-12 13:08:44,705 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 95 transitions, 741 flow [2024-05-12 13:08:44,705 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) [2024-05-12 13:08:44,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:44,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:44,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:08:44,706 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:44,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1344667589, now seen corresponding path program 2 times [2024-05-12 13:08:44,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:44,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389802461] [2024-05-12 13:08:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:44,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:45,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:45,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389802461] [2024-05-12 13:08:45,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389802461] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:45,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:45,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:45,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919589818] [2024-05-12 13:08:45,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:45,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:45,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:45,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:45,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:45,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:45,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 95 transitions, 741 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) [2024-05-12 13:08:45,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:45,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:45,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:45,812 INFO L124 PetriNetUnfolderBase]: 589/1174 cut-off events. [2024-05-12 13:08:45,813 INFO L125 PetriNetUnfolderBase]: For 7517/7523 co-relation queries the response was YES. [2024-05-12 13:08:45,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 1174 events. 589/1174 cut-off events. For 7517/7523 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6691 event pairs, 122 based on Foata normal form. 8/1138 useless extension candidates. Maximal degree in co-relation 4900. Up to 844 conditions per place. [2024-05-12 13:08:45,820 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 99 selfloop transitions, 21 changer transitions 0/128 dead transitions. [2024-05-12 13:08:45,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 1145 flow [2024-05-12 13:08:45,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-05-12 13:08:45,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-05-12 13:08:45,822 INFO L175 Difference]: Start difference. First operand has 92 places, 95 transitions, 741 flow. Second operand 8 states and 147 transitions. [2024-05-12 13:08:45,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 1145 flow [2024-05-12 13:08:45,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 128 transitions, 1080 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 13:08:45,833 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 768 flow [2024-05-12 13:08:45,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=768, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2024-05-12 13:08:45,834 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-05-12 13:08:45,834 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 768 flow [2024-05-12 13:08:45,834 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) [2024-05-12 13:08:45,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:45,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:45,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:08:45,835 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:45,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:45,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1336393627, now seen corresponding path program 4 times [2024-05-12 13:08:45,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:45,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463046761] [2024-05-12 13:08:45,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:45,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:46,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:46,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463046761] [2024-05-12 13:08:46,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463046761] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:46,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:46,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:46,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784555005] [2024-05-12 13:08:46,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:46,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:46,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:46,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:46,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:46,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:46,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 768 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) [2024-05-12 13:08:46,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:46,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:46,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:47,035 INFO L124 PetriNetUnfolderBase]: 590/1193 cut-off events. [2024-05-12 13:08:47,035 INFO L125 PetriNetUnfolderBase]: For 8048/8054 co-relation queries the response was YES. [2024-05-12 13:08:47,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5063 conditions, 1193 events. 590/1193 cut-off events. For 8048/8054 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6919 event pairs, 123 based on Foata normal form. 7/1151 useless extension candidates. Maximal degree in co-relation 5020. Up to 791 conditions per place. [2024-05-12 13:08:47,042 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 93 selfloop transitions, 28 changer transitions 0/129 dead transitions. [2024-05-12 13:08:47,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 129 transitions, 1164 flow [2024-05-12 13:08:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:47,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:47,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 13:08:47,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-05-12 13:08:47,043 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 768 flow. Second operand 8 states and 146 transitions. [2024-05-12 13:08:47,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 129 transitions, 1164 flow [2024-05-12 13:08:47,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 129 transitions, 1094 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:08:47,056 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 801 flow [2024-05-12 13:08:47,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=88, 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=801, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2024-05-12 13:08:47,057 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-05-12 13:08:47,057 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 801 flow [2024-05-12 13:08:47,057 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) [2024-05-12 13:08:47,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:47,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:47,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:08:47,057 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:47,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash -352048543, now seen corresponding path program 3 times [2024-05-12 13:08:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:47,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46613581] [2024-05-12 13:08:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:47,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:47,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46613581] [2024-05-12 13:08:47,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46613581] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:47,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:47,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:47,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670625305] [2024-05-12 13:08:47,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:47,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:47,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:47,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:47,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 801 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) [2024-05-12 13:08:47,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:47,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:47,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:48,199 INFO L124 PetriNetUnfolderBase]: 644/1249 cut-off events. [2024-05-12 13:08:48,199 INFO L125 PetriNetUnfolderBase]: For 9777/9783 co-relation queries the response was YES. [2024-05-12 13:08:48,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5552 conditions, 1249 events. 644/1249 cut-off events. For 9777/9783 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7079 event pairs, 117 based on Foata normal form. 8/1217 useless extension candidates. Maximal degree in co-relation 5508. Up to 753 conditions per place. [2024-05-12 13:08:48,207 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 99 selfloop transitions, 34 changer transitions 0/141 dead transitions. [2024-05-12 13:08:48,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 1353 flow [2024-05-12 13:08:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:48,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-05-12 13:08:48,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-05-12 13:08:48,209 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 801 flow. Second operand 8 states and 153 transitions. [2024-05-12 13:08:48,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 1353 flow [2024-05-12 13:08:48,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 141 transitions, 1266 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-05-12 13:08:48,221 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 906 flow [2024-05-12 13:08:48,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=906, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-05-12 13:08:48,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-05-12 13:08:48,222 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 906 flow [2024-05-12 13:08:48,222 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) [2024-05-12 13:08:48,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:48,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:48,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:08:48,223 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:48,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1336096709, now seen corresponding path program 4 times [2024-05-12 13:08:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:48,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120049945] [2024-05-12 13:08:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:48,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:48,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120049945] [2024-05-12 13:08:48,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120049945] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:48,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:48,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:48,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817930324] [2024-05-12 13:08:48,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:48,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:48,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:48,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:48,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 906 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) [2024-05-12 13:08:48,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:48,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:48,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:49,302 INFO L124 PetriNetUnfolderBase]: 640/1287 cut-off events. [2024-05-12 13:08:49,303 INFO L125 PetriNetUnfolderBase]: For 10304/10306 co-relation queries the response was YES. [2024-05-12 13:08:49,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 1287 events. 640/1287 cut-off events. For 10304/10306 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7527 event pairs, 141 based on Foata normal form. 2/1235 useless extension candidates. Maximal degree in co-relation 5678. Up to 970 conditions per place. [2024-05-12 13:08:49,310 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 115 selfloop transitions, 13 changer transitions 0/136 dead transitions. [2024-05-12 13:08:49,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 136 transitions, 1264 flow [2024-05-12 13:08:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-05-12 13:08:49,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-05-12 13:08:49,312 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 906 flow. Second operand 8 states and 143 transitions. [2024-05-12 13:08:49,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 136 transitions, 1264 flow [2024-05-12 13:08:49,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 136 transitions, 1222 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-05-12 13:08:49,326 INFO L231 Difference]: Finished difference. Result has 105 places, 108 transitions, 895 flow [2024-05-12 13:08:49,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=895, PETRI_PLACES=105, PETRI_TRANSITIONS=108} [2024-05-12 13:08:49,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2024-05-12 13:08:49,327 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 108 transitions, 895 flow [2024-05-12 13:08:49,328 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) [2024-05-12 13:08:49,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:49,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:49,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:08:49,329 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:49,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:49,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1336085797, now seen corresponding path program 1 times [2024-05-12 13:08:49,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:49,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739944299] [2024-05-12 13:08:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:49,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:50,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:50,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739944299] [2024-05-12 13:08:50,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739944299] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:50,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:50,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:08:50,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392470267] [2024-05-12 13:08:50,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:50,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:08:50,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:08:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:08:50,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:50,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 108 transitions, 895 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:50,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:50,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:50,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:50,737 INFO L124 PetriNetUnfolderBase]: 641/1277 cut-off events. [2024-05-12 13:08:50,738 INFO L125 PetriNetUnfolderBase]: For 9978/9980 co-relation queries the response was YES. [2024-05-12 13:08:50,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5624 conditions, 1277 events. 641/1277 cut-off events. For 9978/9980 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7484 event pairs, 141 based on Foata normal form. 2/1228 useless extension candidates. Maximal degree in co-relation 5576. Up to 979 conditions per place. [2024-05-12 13:08:50,744 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 121 selfloop transitions, 14 changer transitions 0/143 dead transitions. [2024-05-12 13:08:50,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 143 transitions, 1301 flow [2024-05-12 13:08:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:08:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:08:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 13:08:50,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-05-12 13:08:50,745 INFO L175 Difference]: Start difference. First operand has 105 places, 108 transitions, 895 flow. Second operand 9 states and 158 transitions. [2024-05-12 13:08:50,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 143 transitions, 1301 flow [2024-05-12 13:08:50,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 143 transitions, 1240 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 13:08:50,758 INFO L231 Difference]: Finished difference. Result has 107 places, 111 transitions, 899 flow [2024-05-12 13:08:50,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=899, PETRI_PLACES=107, PETRI_TRANSITIONS=111} [2024-05-12 13:08:50,758 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-05-12 13:08:50,759 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 111 transitions, 899 flow [2024-05-12 13:08:50,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:50,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:50,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:50,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:08:50,759 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:50,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1700496835, now seen corresponding path program 1 times [2024-05-12 13:08:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567606825] [2024-05-12 13:08:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:51,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567606825] [2024-05-12 13:08:51,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567606825] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:51,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:51,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:51,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394986394] [2024-05-12 13:08:51,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:51,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:51,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:51,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:51,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:51,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:51,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 111 transitions, 899 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) [2024-05-12 13:08:51,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:51,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:51,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:51,777 INFO L124 PetriNetUnfolderBase]: 657/1297 cut-off events. [2024-05-12 13:08:51,777 INFO L125 PetriNetUnfolderBase]: For 10387/10387 co-relation queries the response was YES. [2024-05-12 13:08:51,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5696 conditions, 1297 events. 657/1297 cut-off events. For 10387/10387 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7702 event pairs, 112 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 5647. Up to 968 conditions per place. [2024-05-12 13:08:51,785 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 114 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-05-12 13:08:51,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 142 transitions, 1277 flow [2024-05-12 13:08:51,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-05-12 13:08:51,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-05-12 13:08:51,786 INFO L175 Difference]: Start difference. First operand has 107 places, 111 transitions, 899 flow. Second operand 8 states and 144 transitions. [2024-05-12 13:08:51,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 142 transitions, 1277 flow [2024-05-12 13:08:51,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 142 transitions, 1243 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:08:51,802 INFO L231 Difference]: Finished difference. Result has 110 places, 114 transitions, 942 flow [2024-05-12 13:08:51,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=942, PETRI_PLACES=110, PETRI_TRANSITIONS=114} [2024-05-12 13:08:51,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-05-12 13:08:51,802 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 114 transitions, 942 flow [2024-05-12 13:08:51,803 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) [2024-05-12 13:08:51,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:51,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:51,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:08:51,803 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:51,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1703383555, now seen corresponding path program 2 times [2024-05-12 13:08:51,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:51,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55355498] [2024-05-12 13:08:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:51,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:52,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:52,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:52,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55355498] [2024-05-12 13:08:52,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55355498] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:52,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:52,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:52,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960559370] [2024-05-12 13:08:52,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:52,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:52,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:52,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:52,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 114 transitions, 942 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) [2024-05-12 13:08:52,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:52,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:52,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:52,955 INFO L124 PetriNetUnfolderBase]: 673/1326 cut-off events. [2024-05-12 13:08:52,956 INFO L125 PetriNetUnfolderBase]: For 11383/11383 co-relation queries the response was YES. [2024-05-12 13:08:52,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5922 conditions, 1326 events. 673/1326 cut-off events. For 11383/11383 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7936 event pairs, 149 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 5871. Up to 976 conditions per place. [2024-05-12 13:08:52,963 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 104 selfloop transitions, 35 changer transitions 0/147 dead transitions. [2024-05-12 13:08:52,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 147 transitions, 1338 flow [2024-05-12 13:08:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-05-12 13:08:52,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:08:52,964 INFO L175 Difference]: Start difference. First operand has 110 places, 114 transitions, 942 flow. Second operand 8 states and 148 transitions. [2024-05-12 13:08:52,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 147 transitions, 1338 flow [2024-05-12 13:08:52,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 147 transitions, 1291 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:52,980 INFO L231 Difference]: Finished difference. Result has 113 places, 115 transitions, 986 flow [2024-05-12 13:08:52,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=986, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2024-05-12 13:08:52,980 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2024-05-12 13:08:52,981 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 986 flow [2024-05-12 13:08:52,981 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) [2024-05-12 13:08:52,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:52,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:52,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:08:52,981 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:52,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:52,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1703389507, now seen corresponding path program 1 times [2024-05-12 13:08:52,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:52,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939245835] [2024-05-12 13:08:52,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:52,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:53,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939245835] [2024-05-12 13:08:53,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939245835] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:53,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:53,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:08:53,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933679784] [2024-05-12 13:08:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:53,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:08:53,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:53,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:08:53,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:08:54,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:54,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 986 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:54,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:54,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:54,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:54,393 INFO L124 PetriNetUnfolderBase]: 695/1358 cut-off events. [2024-05-12 13:08:54,394 INFO L125 PetriNetUnfolderBase]: For 12707/12707 co-relation queries the response was YES. [2024-05-12 13:08:54,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 1358 events. 695/1358 cut-off events. For 12707/12707 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8102 event pairs, 156 based on Foata normal form. 2/1316 useless extension candidates. Maximal degree in co-relation 6196. Up to 1029 conditions per place. [2024-05-12 13:08:54,400 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 118 selfloop transitions, 25 changer transitions 0/151 dead transitions. [2024-05-12 13:08:54,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 151 transitions, 1432 flow [2024-05-12 13:08:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:08:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:08:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 13:08:54,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-05-12 13:08:54,402 INFO L175 Difference]: Start difference. First operand has 113 places, 115 transitions, 986 flow. Second operand 9 states and 163 transitions. [2024-05-12 13:08:54,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 151 transitions, 1432 flow [2024-05-12 13:08:54,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 151 transitions, 1357 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:08:54,416 INFO L231 Difference]: Finished difference. Result has 116 places, 117 transitions, 1004 flow [2024-05-12 13:08:54,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1004, PETRI_PLACES=116, PETRI_TRANSITIONS=117} [2024-05-12 13:08:54,416 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-05-12 13:08:54,416 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 117 transitions, 1004 flow [2024-05-12 13:08:54,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:54,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:54,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:54,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:08:54,417 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:54,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash 968544789, now seen corresponding path program 3 times [2024-05-12 13:08:54,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:54,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419851849] [2024-05-12 13:08:54,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:54,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419851849] [2024-05-12 13:08:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419851849] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:55,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:08:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819221368] [2024-05-12 13:08:55,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:55,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:08:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:08:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:08:55,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:55,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 117 transitions, 1004 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) [2024-05-12 13:08:55,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:55,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:55,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:55,636 INFO L124 PetriNetUnfolderBase]: 711/1391 cut-off events. [2024-05-12 13:08:55,637 INFO L125 PetriNetUnfolderBase]: For 13644/13644 co-relation queries the response was YES. [2024-05-12 13:08:55,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6435 conditions, 1391 events. 711/1391 cut-off events. For 13644/13644 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8375 event pairs, 160 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 6382. Up to 1098 conditions per place. [2024-05-12 13:08:55,645 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 126 selfloop transitions, 15 changer transitions 0/149 dead transitions. [2024-05-12 13:08:55,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 149 transitions, 1419 flow [2024-05-12 13:08:55,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:08:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:08:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-05-12 13:08:55,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-05-12 13:08:55,657 INFO L175 Difference]: Start difference. First operand has 116 places, 117 transitions, 1004 flow. Second operand 8 states and 143 transitions. [2024-05-12 13:08:55,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 149 transitions, 1419 flow [2024-05-12 13:08:55,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 149 transitions, 1346 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 13:08:55,720 INFO L231 Difference]: Finished difference. Result has 118 places, 120 transitions, 1000 flow [2024-05-12 13:08:55,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1000, PETRI_PLACES=118, PETRI_TRANSITIONS=120} [2024-05-12 13:08:55,720 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-05-12 13:08:55,720 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 120 transitions, 1000 flow [2024-05-12 13:08:55,720 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) [2024-05-12 13:08:55,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:55,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:55,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:08:55,721 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:55,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1819783657, now seen corresponding path program 2 times [2024-05-12 13:08:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:55,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549670658] [2024-05-12 13:08:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:56,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:56,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549670658] [2024-05-12 13:08:56,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549670658] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:56,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:56,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:08:56,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297197686] [2024-05-12 13:08:56,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:56,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:08:56,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:08:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:08:56,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:56,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 1000 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:56,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:56,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:56,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:57,070 INFO L124 PetriNetUnfolderBase]: 786/1526 cut-off events. [2024-05-12 13:08:57,070 INFO L125 PetriNetUnfolderBase]: For 17386/17386 co-relation queries the response was YES. [2024-05-12 13:08:57,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 1526 events. 786/1526 cut-off events. For 17386/17386 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9327 event pairs, 159 based on Foata normal form. 2/1482 useless extension candidates. Maximal degree in co-relation 7289. Up to 1103 conditions per place. [2024-05-12 13:08:57,079 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 128 selfloop transitions, 27 changer transitions 0/163 dead transitions. [2024-05-12 13:08:57,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 163 transitions, 1627 flow [2024-05-12 13:08:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:08:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:08:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-05-12 13:08:57,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-05-12 13:08:57,080 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 1000 flow. Second operand 9 states and 166 transitions. [2024-05-12 13:08:57,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 163 transitions, 1627 flow [2024-05-12 13:08:57,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 163 transitions, 1587 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:57,099 INFO L231 Difference]: Finished difference. Result has 123 places, 128 transitions, 1178 flow [2024-05-12 13:08:57,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1178, PETRI_PLACES=123, PETRI_TRANSITIONS=128} [2024-05-12 13:08:57,100 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-05-12 13:08:57,100 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 128 transitions, 1178 flow [2024-05-12 13:08:57,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:57,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:57,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:57,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:08:57,101 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:57,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1819783936, now seen corresponding path program 1 times [2024-05-12 13:08:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:57,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842503503] [2024-05-12 13:08:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:57,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:58,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:58,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842503503] [2024-05-12 13:08:58,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842503503] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:58,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:58,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:08:58,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013660365] [2024-05-12 13:08:58,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:58,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:08:58,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:58,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:08:58,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:08:58,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:58,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 128 transitions, 1178 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:58,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:58,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:58,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:58,504 INFO L124 PetriNetUnfolderBase]: 781/1523 cut-off events. [2024-05-12 13:08:58,504 INFO L125 PetriNetUnfolderBase]: For 18441/18441 co-relation queries the response was YES. [2024-05-12 13:08:58,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7508 conditions, 1523 events. 781/1523 cut-off events. For 18441/18441 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9307 event pairs, 164 based on Foata normal form. 2/1477 useless extension candidates. Maximal degree in co-relation 7451. Up to 1162 conditions per place. [2024-05-12 13:08:58,514 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 131 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2024-05-12 13:08:58,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 161 transitions, 1608 flow [2024-05-12 13:08:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:08:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:08:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-05-12 13:08:58,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-05-12 13:08:58,516 INFO L175 Difference]: Start difference. First operand has 123 places, 128 transitions, 1178 flow. Second operand 9 states and 164 transitions. [2024-05-12 13:08:58,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 161 transitions, 1608 flow [2024-05-12 13:08:58,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 161 transitions, 1545 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-05-12 13:08:58,542 INFO L231 Difference]: Finished difference. Result has 127 places, 128 transitions, 1165 flow [2024-05-12 13:08:58,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1165, PETRI_PLACES=127, PETRI_TRANSITIONS=128} [2024-05-12 13:08:58,543 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-05-12 13:08:58,543 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 128 transitions, 1165 flow [2024-05-12 13:08:58,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:58,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:08:58,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:08:58,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:08:58,544 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:08:58,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:08:58,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1819776217, now seen corresponding path program 3 times [2024-05-12 13:08:58,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:08:58,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586563110] [2024-05-12 13:08:58,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:08:58,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:08:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:08:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:08:59,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:08:59,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586563110] [2024-05-12 13:08:59,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586563110] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:08:59,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:08:59,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:08:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005774456] [2024-05-12 13:08:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:08:59,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:08:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:08:59,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:08:59,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:08:59,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:08:59,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 128 transitions, 1165 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:08:59,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:08:59,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:08:59,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:08:59,999 INFO L124 PetriNetUnfolderBase]: 779/1527 cut-off events. [2024-05-12 13:09:00,000 INFO L125 PetriNetUnfolderBase]: For 16840/16840 co-relation queries the response was YES. [2024-05-12 13:09:00,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 1527 events. 779/1527 cut-off events. For 16840/16840 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9385 event pairs, 164 based on Foata normal form. 1/1478 useless extension candidates. Maximal degree in co-relation 7345. Up to 1097 conditions per place. [2024-05-12 13:09:00,010 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 127 selfloop transitions, 29 changer transitions 0/164 dead transitions. [2024-05-12 13:09:00,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 164 transitions, 1698 flow [2024-05-12 13:09:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:00,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-05-12 13:09:00,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-05-12 13:09:00,014 INFO L175 Difference]: Start difference. First operand has 127 places, 128 transitions, 1165 flow. Second operand 9 states and 167 transitions. [2024-05-12 13:09:00,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 164 transitions, 1698 flow [2024-05-12 13:09:00,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 164 transitions, 1622 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:00,037 INFO L231 Difference]: Finished difference. Result has 129 places, 130 transitions, 1197 flow [2024-05-12 13:09:00,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1197, PETRI_PLACES=129, PETRI_TRANSITIONS=130} [2024-05-12 13:09:00,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-05-12 13:09:00,038 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 130 transitions, 1197 flow [2024-05-12 13:09:00,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:00,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:00,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:09:00,039 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:00,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:00,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1714682155, now seen corresponding path program 4 times [2024-05-12 13:09:00,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:00,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865513300] [2024-05-12 13:09:00,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:00,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:00,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:00,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865513300] [2024-05-12 13:09:00,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865513300] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:00,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:00,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:09:00,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565377512] [2024-05-12 13:09:00,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:00,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:09:00,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:00,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:09:00,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:09:00,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:00,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 130 transitions, 1197 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) [2024-05-12 13:09:00,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:00,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:00,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:01,212 INFO L124 PetriNetUnfolderBase]: 780/1515 cut-off events. [2024-05-12 13:09:01,212 INFO L125 PetriNetUnfolderBase]: For 16683/16689 co-relation queries the response was YES. [2024-05-12 13:09:01,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7368 conditions, 1515 events. 780/1515 cut-off events. For 16683/16689 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9272 event pairs, 145 based on Foata normal form. 8/1471 useless extension candidates. Maximal degree in co-relation 7308. Up to 1175 conditions per place. [2024-05-12 13:09:01,222 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 134 selfloop transitions, 19 changer transitions 0/161 dead transitions. [2024-05-12 13:09:01,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 161 transitions, 1640 flow [2024-05-12 13:09:01,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:09:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:09:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-05-12 13:09:01,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-05-12 13:09:01,223 INFO L175 Difference]: Start difference. First operand has 129 places, 130 transitions, 1197 flow. Second operand 8 states and 144 transitions. [2024-05-12 13:09:01,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 161 transitions, 1640 flow [2024-05-12 13:09:01,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 161 transitions, 1562 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 13:09:01,247 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 1188 flow [2024-05-12 13:09:01,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1188, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2024-05-12 13:09:01,248 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-05-12 13:09:01,248 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 1188 flow [2024-05-12 13:09:01,248 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) [2024-05-12 13:09:01,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:01,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:01,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:09:01,249 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:01,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:01,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1980594637, now seen corresponding path program 4 times [2024-05-12 13:09:01,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:01,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287710879] [2024-05-12 13:09:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:01,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:02,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:02,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287710879] [2024-05-12 13:09:02,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287710879] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:02,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:02,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:02,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182959586] [2024-05-12 13:09:02,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:02,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:02,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:02,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:02,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 1188 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:02,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:02,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:02,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:02,855 INFO L124 PetriNetUnfolderBase]: 791/1581 cut-off events. [2024-05-12 13:09:02,855 INFO L125 PetriNetUnfolderBase]: For 17235/17237 co-relation queries the response was YES. [2024-05-12 13:09:02,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7471 conditions, 1581 events. 791/1581 cut-off events. For 17235/17237 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9884 event pairs, 159 based on Foata normal form. 1/1518 useless extension candidates. Maximal degree in co-relation 7410. Up to 1233 conditions per place. [2024-05-12 13:09:02,878 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 144 selfloop transitions, 15 changer transitions 0/167 dead transitions. [2024-05-12 13:09:02,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 167 transitions, 1689 flow [2024-05-12 13:09:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 13:09:02,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-05-12 13:09:02,880 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 1188 flow. Second operand 9 states and 158 transitions. [2024-05-12 13:09:02,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 167 transitions, 1689 flow [2024-05-12 13:09:02,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 167 transitions, 1623 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:02,912 INFO L231 Difference]: Finished difference. Result has 134 places, 136 transitions, 1231 flow [2024-05-12 13:09:02,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1231, PETRI_PLACES=134, PETRI_TRANSITIONS=136} [2024-05-12 13:09:02,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-05-12 13:09:02,913 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 136 transitions, 1231 flow [2024-05-12 13:09:02,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:02,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:02,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:02,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:09:02,914 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:02,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1971390427, now seen corresponding path program 5 times [2024-05-12 13:09:02,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:02,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098083084] [2024-05-12 13:09:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:04,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:04,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098083084] [2024-05-12 13:09:04,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098083084] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:04,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:04,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:04,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276144030] [2024-05-12 13:09:04,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:04,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:04,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:04,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:04,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 136 transitions, 1231 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:04,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:04,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:04,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:04,603 INFO L124 PetriNetUnfolderBase]: 818/1593 cut-off events. [2024-05-12 13:09:04,604 INFO L125 PetriNetUnfolderBase]: For 20182/20188 co-relation queries the response was YES. [2024-05-12 13:09:04,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7884 conditions, 1593 events. 818/1593 cut-off events. For 20182/20188 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9686 event pairs, 125 based on Foata normal form. 7/1551 useless extension candidates. Maximal degree in co-relation 7822. Up to 1006 conditions per place. [2024-05-12 13:09:04,614 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 126 selfloop transitions, 46 changer transitions 0/180 dead transitions. [2024-05-12 13:09:04,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 180 transitions, 1997 flow [2024-05-12 13:09:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:04,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-05-12 13:09:04,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-05-12 13:09:04,625 INFO L175 Difference]: Start difference. First operand has 134 places, 136 transitions, 1231 flow. Second operand 9 states and 168 transitions. [2024-05-12 13:09:04,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 180 transitions, 1997 flow [2024-05-12 13:09:04,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 180 transitions, 1915 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-05-12 13:09:04,656 INFO L231 Difference]: Finished difference. Result has 139 places, 145 transitions, 1455 flow [2024-05-12 13:09:04,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1455, PETRI_PLACES=139, PETRI_TRANSITIONS=145} [2024-05-12 13:09:04,656 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 98 predicate places. [2024-05-12 13:09:04,656 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 145 transitions, 1455 flow [2024-05-12 13:09:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:04,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:04,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:04,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:09:04,657 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:04,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1690854375, now seen corresponding path program 6 times [2024-05-12 13:09:04,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:04,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097679169] [2024-05-12 13:09:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:05,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:05,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097679169] [2024-05-12 13:09:05,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097679169] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:05,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:05,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:05,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839145750] [2024-05-12 13:09:05,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:05,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:05,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:05,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:05,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 145 transitions, 1455 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:05,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:05,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:05,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:06,437 INFO L124 PetriNetUnfolderBase]: 816/1590 cut-off events. [2024-05-12 13:09:06,437 INFO L125 PetriNetUnfolderBase]: For 20312/20318 co-relation queries the response was YES. [2024-05-12 13:09:06,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8094 conditions, 1590 events. 816/1590 cut-off events. For 20312/20318 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9681 event pairs, 124 based on Foata normal form. 7/1548 useless extension candidates. Maximal degree in co-relation 8029. Up to 1004 conditions per place. [2024-05-12 13:09:06,447 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 126 selfloop transitions, 45 changer transitions 0/179 dead transitions. [2024-05-12 13:09:06,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 179 transitions, 1989 flow [2024-05-12 13:09:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-05-12 13:09:06,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-05-12 13:09:06,448 INFO L175 Difference]: Start difference. First operand has 139 places, 145 transitions, 1455 flow. Second operand 9 states and 168 transitions. [2024-05-12 13:09:06,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 179 transitions, 1989 flow [2024-05-12 13:09:06,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 179 transitions, 1873 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-05-12 13:09:06,488 INFO L231 Difference]: Finished difference. Result has 145 places, 145 transitions, 1434 flow [2024-05-12 13:09:06,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1434, PETRI_PLACES=145, PETRI_TRANSITIONS=145} [2024-05-12 13:09:06,488 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-05-12 13:09:06,488 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 145 transitions, 1434 flow [2024-05-12 13:09:06,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:06,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:06,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:06,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:09:06,489 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:06,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:06,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1264978792, now seen corresponding path program 2 times [2024-05-12 13:09:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:06,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017940611] [2024-05-12 13:09:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:06,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:07,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017940611] [2024-05-12 13:09:07,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017940611] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:07,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:07,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:07,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693689826] [2024-05-12 13:09:07,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:07,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:07,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:07,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:07,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:07,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 145 transitions, 1434 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:07,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:07,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:07,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:07,879 INFO L124 PetriNetUnfolderBase]: 812/1567 cut-off events. [2024-05-12 13:09:07,879 INFO L125 PetriNetUnfolderBase]: For 19244/19252 co-relation queries the response was YES. [2024-05-12 13:09:07,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7942 conditions, 1567 events. 812/1567 cut-off events. For 19244/19252 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9684 event pairs, 137 based on Foata normal form. 4/1518 useless extension candidates. Maximal degree in co-relation 7875. Up to 1133 conditions per place. [2024-05-12 13:09:07,890 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 133 selfloop transitions, 35 changer transitions 0/176 dead transitions. [2024-05-12 13:09:07,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 176 transitions, 1888 flow [2024-05-12 13:09:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-05-12 13:09:07,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-05-12 13:09:07,891 INFO L175 Difference]: Start difference. First operand has 145 places, 145 transitions, 1434 flow. Second operand 9 states and 166 transitions. [2024-05-12 13:09:07,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 176 transitions, 1888 flow [2024-05-12 13:09:07,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 176 transitions, 1768 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:07,925 INFO L231 Difference]: Finished difference. Result has 147 places, 145 transitions, 1390 flow [2024-05-12 13:09:07,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1390, PETRI_PLACES=147, PETRI_TRANSITIONS=145} [2024-05-12 13:09:07,925 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-05-12 13:09:07,925 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 145 transitions, 1390 flow [2024-05-12 13:09:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:07,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:07,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:07,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:09:07,926 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:07,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:07,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1264978513, now seen corresponding path program 7 times [2024-05-12 13:09:07,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438361248] [2024-05-12 13:09:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:07,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438361248] [2024-05-12 13:09:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438361248] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:08,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:08,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:08,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858057260] [2024-05-12 13:09:08,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:08,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:08,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:08,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 145 transitions, 1390 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:08,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:08,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:08,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:09,284 INFO L124 PetriNetUnfolderBase]: 847/1636 cut-off events. [2024-05-12 13:09:09,285 INFO L125 PetriNetUnfolderBase]: For 21807/21813 co-relation queries the response was YES. [2024-05-12 13:09:09,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8421 conditions, 1636 events. 847/1636 cut-off events. For 21807/21813 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10178 event pairs, 139 based on Foata normal form. 8/1594 useless extension candidates. Maximal degree in co-relation 8353. Up to 1171 conditions per place. [2024-05-12 13:09:09,295 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 144 selfloop transitions, 33 changer transitions 0/185 dead transitions. [2024-05-12 13:09:09,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 185 transitions, 2084 flow [2024-05-12 13:09:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-05-12 13:09:09,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015015015015015 [2024-05-12 13:09:09,305 INFO L175 Difference]: Start difference. First operand has 147 places, 145 transitions, 1390 flow. Second operand 9 states and 167 transitions. [2024-05-12 13:09:09,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 185 transitions, 2084 flow [2024-05-12 13:09:09,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 185 transitions, 1960 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-05-12 13:09:09,340 INFO L231 Difference]: Finished difference. Result has 147 places, 151 transitions, 1490 flow [2024-05-12 13:09:09,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1490, PETRI_PLACES=147, PETRI_TRANSITIONS=151} [2024-05-12 13:09:09,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-05-12 13:09:09,341 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 151 transitions, 1490 flow [2024-05-12 13:09:09,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:09,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:09,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:09,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:09:09,342 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:09,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:09,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1264971073, now seen corresponding path program 8 times [2024-05-12 13:09:09,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:09,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333058674] [2024-05-12 13:09:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:10,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:10,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333058674] [2024-05-12 13:09:10,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333058674] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:10,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:10,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:10,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100198334] [2024-05-12 13:09:10,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:10,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:10,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:10,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:10,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:10,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:10,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 151 transitions, 1490 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:10,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:10,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:10,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:11,028 INFO L124 PetriNetUnfolderBase]: 845/1642 cut-off events. [2024-05-12 13:09:11,029 INFO L125 PetriNetUnfolderBase]: For 21879/21885 co-relation queries the response was YES. [2024-05-12 13:09:11,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8302 conditions, 1642 events. 845/1642 cut-off events. For 21879/21885 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10245 event pairs, 140 based on Foata normal form. 7/1596 useless extension candidates. Maximal degree in co-relation 8234. Up to 1221 conditions per place. [2024-05-12 13:09:11,042 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 148 selfloop transitions, 28 changer transitions 0/184 dead transitions. [2024-05-12 13:09:11,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 184 transitions, 1972 flow [2024-05-12 13:09:11,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-05-12 13:09:11,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-05-12 13:09:11,045 INFO L175 Difference]: Start difference. First operand has 147 places, 151 transitions, 1490 flow. Second operand 9 states and 165 transitions. [2024-05-12 13:09:11,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 184 transitions, 1972 flow [2024-05-12 13:09:11,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 184 transitions, 1840 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-05-12 13:09:11,095 INFO L231 Difference]: Finished difference. Result has 151 places, 151 transitions, 1419 flow [2024-05-12 13:09:11,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1419, PETRI_PLACES=151, PETRI_TRANSITIONS=151} [2024-05-12 13:09:11,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-05-12 13:09:11,096 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 151 transitions, 1419 flow [2024-05-12 13:09:11,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:11,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:11,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:11,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:09:11,096 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:11,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash -669143760, now seen corresponding path program 1 times [2024-05-12 13:09:11,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:11,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116481383] [2024-05-12 13:09:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:11,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:11,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:11,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116481383] [2024-05-12 13:09:11,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116481383] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:11,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:11,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:09:11,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227669489] [2024-05-12 13:09:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:09:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:09:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:09:11,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-05-12 13:09:11,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 151 transitions, 1419 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:11,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:11,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-05-12 13:09:11,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:11,350 INFO L124 PetriNetUnfolderBase]: 480/1036 cut-off events. [2024-05-12 13:09:11,351 INFO L125 PetriNetUnfolderBase]: For 14028/14036 co-relation queries the response was YES. [2024-05-12 13:09:11,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 1036 events. 480/1036 cut-off events. For 14028/14036 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5975 event pairs, 101 based on Foata normal form. 67/1065 useless extension candidates. Maximal degree in co-relation 5039. Up to 336 conditions per place. [2024-05-12 13:09:11,356 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 81 selfloop transitions, 43 changer transitions 1/150 dead transitions. [2024-05-12 13:09:11,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 150 transitions, 1664 flow [2024-05-12 13:09:11,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:09:11,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:09:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-05-12 13:09:11,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6554054054054054 [2024-05-12 13:09:11,358 INFO L175 Difference]: Start difference. First operand has 151 places, 151 transitions, 1419 flow. Second operand 4 states and 97 transitions. [2024-05-12 13:09:11,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 150 transitions, 1664 flow [2024-05-12 13:09:11,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 150 transitions, 1526 flow, removed 18 selfloop flow, removed 16 redundant places. [2024-05-12 13:09:11,382 INFO L231 Difference]: Finished difference. Result has 140 places, 133 transitions, 1324 flow [2024-05-12 13:09:11,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1324, PETRI_PLACES=140, PETRI_TRANSITIONS=133} [2024-05-12 13:09:11,382 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-05-12 13:09:11,383 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 133 transitions, 1324 flow [2024-05-12 13:09:11,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:11,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:11,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:11,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:09:11,383 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:11,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1318385434, now seen corresponding path program 1 times [2024-05-12 13:09:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:11,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199833860] [2024-05-12 13:09:11,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:11,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:12,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:12,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:12,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199833860] [2024-05-12 13:09:12,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199833860] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:12,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:12,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:12,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205674562] [2024-05-12 13:09:12,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:12,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:12,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:12,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:12,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:12,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 133 transitions, 1324 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:12,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:12,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:12,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:12,642 INFO L124 PetriNetUnfolderBase]: 512/1028 cut-off events. [2024-05-12 13:09:12,643 INFO L125 PetriNetUnfolderBase]: For 16943/16943 co-relation queries the response was YES. [2024-05-12 13:09:12,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5194 conditions, 1028 events. 512/1028 cut-off events. For 16943/16943 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5381 event pairs, 50 based on Foata normal form. 2/997 useless extension candidates. Maximal degree in co-relation 5130. Up to 747 conditions per place. [2024-05-12 13:09:12,649 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 139 selfloop transitions, 18 changer transitions 0/165 dead transitions. [2024-05-12 13:09:12,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 165 transitions, 1760 flow [2024-05-12 13:09:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-05-12 13:09:12,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-05-12 13:09:12,653 INFO L175 Difference]: Start difference. First operand has 140 places, 133 transitions, 1324 flow. Second operand 9 states and 155 transitions. [2024-05-12 13:09:12,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 165 transitions, 1760 flow [2024-05-12 13:09:12,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 165 transitions, 1698 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 13:09:12,684 INFO L231 Difference]: Finished difference. Result has 147 places, 134 transitions, 1326 flow [2024-05-12 13:09:12,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1326, PETRI_PLACES=147, PETRI_TRANSITIONS=134} [2024-05-12 13:09:12,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-05-12 13:09:12,685 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 134 transitions, 1326 flow [2024-05-12 13:09:12,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:12,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:12,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:12,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:09:12,694 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:12,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1265283682, now seen corresponding path program 2 times [2024-05-12 13:09:12,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:12,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887980105] [2024-05-12 13:09:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:12,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:13,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887980105] [2024-05-12 13:09:13,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887980105] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:13,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:13,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:13,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195662504] [2024-05-12 13:09:13,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:13,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:13,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:13,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:13,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:13,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 134 transitions, 1326 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:13,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:13,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:13,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:14,215 INFO L124 PetriNetUnfolderBase]: 528/1065 cut-off events. [2024-05-12 13:09:14,215 INFO L125 PetriNetUnfolderBase]: For 16820/16820 co-relation queries the response was YES. [2024-05-12 13:09:14,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 1065 events. 528/1065 cut-off events. For 16820/16820 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5669 event pairs, 111 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 5310. Up to 797 conditions per place. [2024-05-12 13:09:14,222 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 136 selfloop transitions, 20 changer transitions 0/164 dead transitions. [2024-05-12 13:09:14,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 164 transitions, 1750 flow [2024-05-12 13:09:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-05-12 13:09:14,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:09:14,229 INFO L175 Difference]: Start difference. First operand has 147 places, 134 transitions, 1326 flow. Second operand 9 states and 153 transitions. [2024-05-12 13:09:14,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 164 transitions, 1750 flow [2024-05-12 13:09:14,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 164 transitions, 1702 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:14,263 INFO L231 Difference]: Finished difference. Result has 149 places, 135 transitions, 1342 flow [2024-05-12 13:09:14,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1342, PETRI_PLACES=149, PETRI_TRANSITIONS=135} [2024-05-12 13:09:14,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-05-12 13:09:14,264 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 135 transitions, 1342 flow [2024-05-12 13:09:14,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:14,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:14,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:14,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:09:14,265 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:14,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:14,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2110500708, now seen corresponding path program 3 times [2024-05-12 13:09:14,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:14,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423838067] [2024-05-12 13:09:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:15,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423838067] [2024-05-12 13:09:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423838067] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:15,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:15,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:15,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520761271] [2024-05-12 13:09:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:15,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:15,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:15,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:15,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 135 transitions, 1342 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:15,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:15,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:15,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:15,473 INFO L124 PetriNetUnfolderBase]: 544/1110 cut-off events. [2024-05-12 13:09:15,474 INFO L125 PetriNetUnfolderBase]: For 18264/18264 co-relation queries the response was YES. [2024-05-12 13:09:15,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5537 conditions, 1110 events. 544/1110 cut-off events. For 18264/18264 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6041 event pairs, 126 based on Foata normal form. 2/1072 useless extension candidates. Maximal degree in co-relation 5470. Up to 848 conditions per place. [2024-05-12 13:09:15,482 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 132 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2024-05-12 13:09:15,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 161 transitions, 1750 flow [2024-05-12 13:09:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-05-12 13:09:15,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-05-12 13:09:15,483 INFO L175 Difference]: Start difference. First operand has 149 places, 135 transitions, 1342 flow. Second operand 9 states and 150 transitions. [2024-05-12 13:09:15,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 161 transitions, 1750 flow [2024-05-12 13:09:15,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 161 transitions, 1696 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:15,516 INFO L231 Difference]: Finished difference. Result has 151 places, 136 transitions, 1356 flow [2024-05-12 13:09:15,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1356, PETRI_PLACES=151, PETRI_TRANSITIONS=136} [2024-05-12 13:09:15,518 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-05-12 13:09:15,518 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 136 transitions, 1356 flow [2024-05-12 13:09:15,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:15,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:15,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:15,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:09:15,518 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:15,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:15,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1491231192, now seen corresponding path program 4 times [2024-05-12 13:09:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:15,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167226595] [2024-05-12 13:09:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:15,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:16,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:16,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:16,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167226595] [2024-05-12 13:09:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167226595] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:16,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:16,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:16,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500312615] [2024-05-12 13:09:16,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:16,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:16,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:16,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:16,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:16,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:16,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 136 transitions, 1356 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:16,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:16,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:16,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:16,776 INFO L124 PetriNetUnfolderBase]: 560/1146 cut-off events. [2024-05-12 13:09:16,776 INFO L125 PetriNetUnfolderBase]: For 19274/19274 co-relation queries the response was YES. [2024-05-12 13:09:16,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5681 conditions, 1146 events. 560/1146 cut-off events. For 19274/19274 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6311 event pairs, 134 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 5613. Up to 900 conditions per place. [2024-05-12 13:09:16,784 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 138 selfloop transitions, 15 changer transitions 0/161 dead transitions. [2024-05-12 13:09:16,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 161 transitions, 1768 flow [2024-05-12 13:09:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-05-12 13:09:16,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-05-12 13:09:16,785 INFO L175 Difference]: Start difference. First operand has 151 places, 136 transitions, 1356 flow. Second operand 9 states and 147 transitions. [2024-05-12 13:09:16,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 161 transitions, 1768 flow [2024-05-12 13:09:16,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 161 transitions, 1710 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:16,816 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1369 flow [2024-05-12 13:09:16,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1369, PETRI_PLACES=154, PETRI_TRANSITIONS=138} [2024-05-12 13:09:16,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-05-12 13:09:16,817 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1369 flow [2024-05-12 13:09:16,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:16,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:16,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:16,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:09:16,818 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:16,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1491053562, now seen corresponding path program 5 times [2024-05-12 13:09:16,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:16,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161145144] [2024-05-12 13:09:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:16,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:17,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:17,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161145144] [2024-05-12 13:09:17,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161145144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:17,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:17,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373169395] [2024-05-12 13:09:17,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:17,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:17,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:17,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:17,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:17,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:17,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 138 transitions, 1369 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:17,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:17,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:17,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:18,253 INFO L124 PetriNetUnfolderBase]: 576/1175 cut-off events. [2024-05-12 13:09:18,253 INFO L125 PetriNetUnfolderBase]: For 20259/20259 co-relation queries the response was YES. [2024-05-12 13:09:18,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5802 conditions, 1175 events. 576/1175 cut-off events. For 20259/20259 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6523 event pairs, 129 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 5732. Up to 905 conditions per place. [2024-05-12 13:09:18,261 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 144 selfloop transitions, 14 changer transitions 0/166 dead transitions. [2024-05-12 13:09:18,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 1797 flow [2024-05-12 13:09:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-05-12 13:09:18,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-05-12 13:09:18,262 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1369 flow. Second operand 9 states and 150 transitions. [2024-05-12 13:09:18,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 1797 flow [2024-05-12 13:09:18,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 166 transitions, 1752 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-05-12 13:09:18,300 INFO L231 Difference]: Finished difference. Result has 157 places, 139 transitions, 1382 flow [2024-05-12 13:09:18,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1382, PETRI_PLACES=157, PETRI_TRANSITIONS=139} [2024-05-12 13:09:18,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-05-12 13:09:18,301 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 139 transitions, 1382 flow [2024-05-12 13:09:18,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:18,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:18,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:18,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:09:18,302 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:18,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1497487302, now seen corresponding path program 6 times [2024-05-12 13:09:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:18,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380831698] [2024-05-12 13:09:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:18,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:19,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:19,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380831698] [2024-05-12 13:09:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380831698] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:19,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:19,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935835249] [2024-05-12 13:09:19,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:19,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:19,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:19,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:19,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 139 transitions, 1382 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:19,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:19,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:19,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:19,959 INFO L124 PetriNetUnfolderBase]: 592/1220 cut-off events. [2024-05-12 13:09:19,959 INFO L125 PetriNetUnfolderBase]: For 21506/21506 co-relation queries the response was YES. [2024-05-12 13:09:19,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5961 conditions, 1220 events. 592/1220 cut-off events. For 21506/21506 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6873 event pairs, 144 based on Foata normal form. 2/1174 useless extension candidates. Maximal degree in co-relation 5890. Up to 946 conditions per place. [2024-05-12 13:09:19,967 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 137 selfloop transitions, 18 changer transitions 0/163 dead transitions. [2024-05-12 13:09:19,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 163 transitions, 1794 flow [2024-05-12 13:09:19,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-05-12 13:09:19,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-05-12 13:09:19,969 INFO L175 Difference]: Start difference. First operand has 157 places, 139 transitions, 1382 flow. Second operand 9 states and 149 transitions. [2024-05-12 13:09:19,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 163 transitions, 1794 flow [2024-05-12 13:09:20,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 163 transitions, 1746 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:20,011 INFO L231 Difference]: Finished difference. Result has 159 places, 140 transitions, 1402 flow [2024-05-12 13:09:20,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1402, PETRI_PLACES=159, PETRI_TRANSITIONS=140} [2024-05-12 13:09:20,011 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-05-12 13:09:20,011 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 140 transitions, 1402 flow [2024-05-12 13:09:20,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:20,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:20,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:20,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:09:20,012 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:20,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1497494246, now seen corresponding path program 1 times [2024-05-12 13:09:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38276739] [2024-05-12 13:09:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:20,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38276739] [2024-05-12 13:09:21,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38276739] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:21,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:21,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:21,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700822791] [2024-05-12 13:09:21,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:21,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:21,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:21,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:21,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:21,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:21,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 140 transitions, 1402 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:21,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:21,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:21,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:22,033 INFO L124 PetriNetUnfolderBase]: 597/1228 cut-off events. [2024-05-12 13:09:22,033 INFO L125 PetriNetUnfolderBase]: For 21337/21337 co-relation queries the response was YES. [2024-05-12 13:09:22,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5974 conditions, 1228 events. 597/1228 cut-off events. For 21337/21337 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6942 event pairs, 144 based on Foata normal form. 1/1180 useless extension candidates. Maximal degree in co-relation 5902. Up to 948 conditions per place. [2024-05-12 13:09:22,043 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 131 selfloop transitions, 24 changer transitions 0/163 dead transitions. [2024-05-12 13:09:22,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 163 transitions, 1832 flow [2024-05-12 13:09:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 13:09:22,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-05-12 13:09:22,044 INFO L175 Difference]: Start difference. First operand has 159 places, 140 transitions, 1402 flow. Second operand 10 states and 162 transitions. [2024-05-12 13:09:22,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 163 transitions, 1832 flow [2024-05-12 13:09:22,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 163 transitions, 1774 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:22,081 INFO L231 Difference]: Finished difference. Result has 162 places, 142 transitions, 1451 flow [2024-05-12 13:09:22,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1451, PETRI_PLACES=162, PETRI_TRANSITIONS=142} [2024-05-12 13:09:22,081 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-05-12 13:09:22,081 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 142 transitions, 1451 flow [2024-05-12 13:09:22,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:22,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:22,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:22,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:09:22,082 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:22,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:22,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1497724886, now seen corresponding path program 2 times [2024-05-12 13:09:22,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:22,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947344486] [2024-05-12 13:09:22,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:22,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:23,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:23,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:23,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947344486] [2024-05-12 13:09:23,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947344486] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:23,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:23,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:23,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900134736] [2024-05-12 13:09:23,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:23,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:23,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:23,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:23,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:23,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:23,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 142 transitions, 1451 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:23,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:23,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:23,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:23,845 INFO L124 PetriNetUnfolderBase]: 595/1225 cut-off events. [2024-05-12 13:09:23,846 INFO L125 PetriNetUnfolderBase]: For 20314/20314 co-relation queries the response was YES. [2024-05-12 13:09:23,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5805 conditions, 1225 events. 595/1225 cut-off events. For 20314/20314 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6917 event pairs, 144 based on Foata normal form. 1/1177 useless extension candidates. Maximal degree in co-relation 5732. Up to 925 conditions per place. [2024-05-12 13:09:23,854 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 125 selfloop transitions, 30 changer transitions 0/163 dead transitions. [2024-05-12 13:09:23,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 163 transitions, 1831 flow [2024-05-12 13:09:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:23,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-05-12 13:09:23,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-05-12 13:09:23,857 INFO L175 Difference]: Start difference. First operand has 162 places, 142 transitions, 1451 flow. Second operand 10 states and 163 transitions. [2024-05-12 13:09:23,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 163 transitions, 1831 flow [2024-05-12 13:09:23,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 1706 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-05-12 13:09:23,896 INFO L231 Difference]: Finished difference. Result has 164 places, 142 transitions, 1391 flow [2024-05-12 13:09:23,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1391, PETRI_PLACES=164, PETRI_TRANSITIONS=142} [2024-05-12 13:09:23,898 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-05-12 13:09:23,898 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 142 transitions, 1391 flow [2024-05-12 13:09:23,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:23,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:23,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:23,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:09:23,899 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:23,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1497733566, now seen corresponding path program 1 times [2024-05-12 13:09:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:23,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840947530] [2024-05-12 13:09:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:24,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840947530] [2024-05-12 13:09:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840947530] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:24,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711840666] [2024-05-12 13:09:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:24,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:24,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:24,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:24,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 142 transitions, 1391 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:24,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:24,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:24,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:25,172 INFO L124 PetriNetUnfolderBase]: 679/1430 cut-off events. [2024-05-12 13:09:25,172 INFO L125 PetriNetUnfolderBase]: For 30983/30983 co-relation queries the response was YES. [2024-05-12 13:09:25,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 1430 events. 679/1430 cut-off events. For 30983/30983 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8499 event pairs, 180 based on Foata normal form. 12/1381 useless extension candidates. Maximal degree in co-relation 6442. Up to 955 conditions per place. [2024-05-12 13:09:25,183 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 21 changer transitions 0/170 dead transitions. [2024-05-12 13:09:25,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 170 transitions, 1863 flow [2024-05-12 13:09:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-05-12 13:09:25,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-05-12 13:09:25,184 INFO L175 Difference]: Start difference. First operand has 164 places, 142 transitions, 1391 flow. Second operand 9 states and 155 transitions. [2024-05-12 13:09:25,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 170 transitions, 1863 flow [2024-05-12 13:09:25,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 170 transitions, 1767 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-05-12 13:09:25,233 INFO L231 Difference]: Finished difference. Result has 163 places, 143 transitions, 1359 flow [2024-05-12 13:09:25,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1359, PETRI_PLACES=163, PETRI_TRANSITIONS=143} [2024-05-12 13:09:25,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-05-12 13:09:25,234 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 143 transitions, 1359 flow [2024-05-12 13:09:25,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:25,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:25,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:25,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:09:25,235 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:25,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:25,235 INFO L85 PathProgramCache]: Analyzing trace with hash 983555240, now seen corresponding path program 7 times [2024-05-12 13:09:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858017440] [2024-05-12 13:09:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:25,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:26,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858017440] [2024-05-12 13:09:26,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858017440] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:26,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:26,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:26,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98313170] [2024-05-12 13:09:26,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:26,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:26,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:26,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:26,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:26,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:26,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 143 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:26,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:26,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:26,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:26,799 INFO L124 PetriNetUnfolderBase]: 695/1468 cut-off events. [2024-05-12 13:09:26,799 INFO L125 PetriNetUnfolderBase]: For 24870/24872 co-relation queries the response was YES. [2024-05-12 13:09:26,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1468 events. 695/1468 cut-off events. For 24870/24872 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8838 event pairs, 186 based on Foata normal form. 4/1405 useless extension candidates. Maximal degree in co-relation 6658. Up to 1090 conditions per place. [2024-05-12 13:09:26,808 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 127 selfloop transitions, 30 changer transitions 0/165 dead transitions. [2024-05-12 13:09:26,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 165 transitions, 1771 flow [2024-05-12 13:09:26,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-05-12 13:09:26,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-05-12 13:09:26,809 INFO L175 Difference]: Start difference. First operand has 163 places, 143 transitions, 1359 flow. Second operand 9 states and 149 transitions. [2024-05-12 13:09:26,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 165 transitions, 1771 flow [2024-05-12 13:09:26,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 165 transitions, 1731 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:26,849 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 1413 flow [2024-05-12 13:09:26,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1413, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2024-05-12 13:09:26,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-05-12 13:09:26,849 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 1413 flow [2024-05-12 13:09:26,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:26,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:26,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:26,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:09:26,850 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:26,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash 553135636, now seen corresponding path program 8 times [2024-05-12 13:09:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206179871] [2024-05-12 13:09:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:26,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:27,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:27,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206179871] [2024-05-12 13:09:27,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206179871] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:27,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:27,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:27,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791530009] [2024-05-12 13:09:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:27,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:27,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:27,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:27,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 1413 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:27,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:27,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:27,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:28,050 INFO L124 PetriNetUnfolderBase]: 711/1504 cut-off events. [2024-05-12 13:09:28,051 INFO L125 PetriNetUnfolderBase]: For 27010/27012 co-relation queries the response was YES. [2024-05-12 13:09:28,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 1504 events. 711/1504 cut-off events. For 27010/27012 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9127 event pairs, 194 based on Foata normal form. 4/1439 useless extension candidates. Maximal degree in co-relation 6962. Up to 1158 conditions per place. [2024-05-12 13:09:28,061 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 140 selfloop transitions, 19 changer transitions 0/167 dead transitions. [2024-05-12 13:09:28,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 167 transitions, 1841 flow [2024-05-12 13:09:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-05-12 13:09:28,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-05-12 13:09:28,062 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 1413 flow. Second operand 9 states and 147 transitions. [2024-05-12 13:09:28,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 167 transitions, 1841 flow [2024-05-12 13:09:28,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 167 transitions, 1755 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:28,111 INFO L231 Difference]: Finished difference. Result has 168 places, 146 transitions, 1416 flow [2024-05-12 13:09:28,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1416, PETRI_PLACES=168, PETRI_TRANSITIONS=146} [2024-05-12 13:09:28,111 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-05-12 13:09:28,112 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 146 transitions, 1416 flow [2024-05-12 13:09:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:28,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:28,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:09:28,112 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:28,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1615540282, now seen corresponding path program 9 times [2024-05-12 13:09:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10152270] [2024-05-12 13:09:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:29,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:29,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10152270] [2024-05-12 13:09:29,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10152270] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:29,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:29,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:29,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513860831] [2024-05-12 13:09:29,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:29,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:29,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:29,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:29,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:29,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 146 transitions, 1416 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:29,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:29,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:29,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:29,752 INFO L124 PetriNetUnfolderBase]: 727/1539 cut-off events. [2024-05-12 13:09:29,753 INFO L125 PetriNetUnfolderBase]: For 28248/28250 co-relation queries the response was YES. [2024-05-12 13:09:29,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 1539 events. 727/1539 cut-off events. For 28248/28250 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9431 event pairs, 189 based on Foata normal form. 4/1471 useless extension candidates. Maximal degree in co-relation 7073. Up to 1163 conditions per place. [2024-05-12 13:09:29,762 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 146 selfloop transitions, 18 changer transitions 0/172 dead transitions. [2024-05-12 13:09:29,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 172 transitions, 1858 flow [2024-05-12 13:09:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-05-12 13:09:29,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-05-12 13:09:29,763 INFO L175 Difference]: Start difference. First operand has 168 places, 146 transitions, 1416 flow. Second operand 9 states and 150 transitions. [2024-05-12 13:09:29,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 172 transitions, 1858 flow [2024-05-12 13:09:29,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 172 transitions, 1797 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 13:09:29,818 INFO L231 Difference]: Finished difference. Result has 171 places, 147 transitions, 1429 flow [2024-05-12 13:09:29,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1429, PETRI_PLACES=171, PETRI_TRANSITIONS=147} [2024-05-12 13:09:29,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-05-12 13:09:29,819 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 147 transitions, 1429 flow [2024-05-12 13:09:29,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:29,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:29,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:29,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:09:29,820 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:29,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:29,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1827283570, now seen corresponding path program 10 times [2024-05-12 13:09:29,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:29,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584315728] [2024-05-12 13:09:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:29,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:30,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:30,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584315728] [2024-05-12 13:09:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584315728] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:30,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:30,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130645654] [2024-05-12 13:09:30,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:30,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:30,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:30,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:30,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 147 transitions, 1429 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:30,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:30,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:30,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:31,387 INFO L124 PetriNetUnfolderBase]: 728/1552 cut-off events. [2024-05-12 13:09:31,387 INFO L125 PetriNetUnfolderBase]: For 26549/26551 co-relation queries the response was YES. [2024-05-12 13:09:31,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6994 conditions, 1552 events. 728/1552 cut-off events. For 26549/26551 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9591 event pairs, 202 based on Foata normal form. 4/1482 useless extension candidates. Maximal degree in co-relation 6915. Up to 1179 conditions per place. [2024-05-12 13:09:31,397 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 139 selfloop transitions, 22 changer transitions 0/169 dead transitions. [2024-05-12 13:09:31,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 169 transitions, 1855 flow [2024-05-12 13:09:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-05-12 13:09:31,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-05-12 13:09:31,398 INFO L175 Difference]: Start difference. First operand has 171 places, 147 transitions, 1429 flow. Second operand 9 states and 149 transitions. [2024-05-12 13:09:31,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 169 transitions, 1855 flow [2024-05-12 13:09:31,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 169 transitions, 1791 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:31,458 INFO L231 Difference]: Finished difference. Result has 173 places, 148 transitions, 1449 flow [2024-05-12 13:09:31,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1449, PETRI_PLACES=173, PETRI_TRANSITIONS=148} [2024-05-12 13:09:31,458 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-05-12 13:09:31,459 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 148 transitions, 1449 flow [2024-05-12 13:09:31,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:31,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:31,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:31,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:09:31,459 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:31,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1827529834, now seen corresponding path program 2 times [2024-05-12 13:09:31,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:31,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709656787] [2024-05-12 13:09:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:31,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:32,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:32,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709656787] [2024-05-12 13:09:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709656787] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:32,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:32,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:32,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508750083] [2024-05-12 13:09:32,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:32,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:32,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:32,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:32,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 148 transitions, 1449 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:32,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:32,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:32,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:32,934 INFO L124 PetriNetUnfolderBase]: 812/1759 cut-off events. [2024-05-12 13:09:32,934 INFO L125 PetriNetUnfolderBase]: For 38377/38381 co-relation queries the response was YES. [2024-05-12 13:09:32,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7643 conditions, 1759 events. 812/1759 cut-off events. For 38377/38381 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11380 event pairs, 243 based on Foata normal form. 12/1683 useless extension candidates. Maximal degree in co-relation 7563. Up to 1149 conditions per place. [2024-05-12 13:09:32,946 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 132 selfloop transitions, 34 changer transitions 0/174 dead transitions. [2024-05-12 13:09:32,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 174 transitions, 1919 flow [2024-05-12 13:09:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-05-12 13:09:32,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:09:32,947 INFO L175 Difference]: Start difference. First operand has 173 places, 148 transitions, 1449 flow. Second operand 10 states and 170 transitions. [2024-05-12 13:09:32,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 174 transitions, 1919 flow [2024-05-12 13:09:33,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 174 transitions, 1845 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:33,019 INFO L231 Difference]: Finished difference. Result has 176 places, 149 transitions, 1467 flow [2024-05-12 13:09:33,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1467, PETRI_PLACES=176, PETRI_TRANSITIONS=149} [2024-05-12 13:09:33,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-05-12 13:09:33,020 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 149 transitions, 1467 flow [2024-05-12 13:09:33,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:33,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:33,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:33,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:09:33,020 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:33,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash 559398690, now seen corresponding path program 3 times [2024-05-12 13:09:33,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:33,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659391316] [2024-05-12 13:09:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:33,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659391316] [2024-05-12 13:09:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659391316] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:34,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526206317] [2024-05-12 13:09:34,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:34,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:34,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:34,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:34,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 149 transitions, 1467 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:34,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:34,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:34,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:35,225 INFO L124 PetriNetUnfolderBase]: 817/1767 cut-off events. [2024-05-12 13:09:35,225 INFO L125 PetriNetUnfolderBase]: For 26919/26923 co-relation queries the response was YES. [2024-05-12 13:09:35,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7630 conditions, 1767 events. 817/1767 cut-off events. For 26919/26923 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11477 event pairs, 243 based on Foata normal form. 1/1676 useless extension candidates. Maximal degree in co-relation 7549. Up to 1282 conditions per place. [2024-05-12 13:09:35,237 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 119 selfloop transitions, 42 changer transitions 0/169 dead transitions. [2024-05-12 13:09:35,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 169 transitions, 1991 flow [2024-05-12 13:09:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:35,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-05-12 13:09:35,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-05-12 13:09:35,238 INFO L175 Difference]: Start difference. First operand has 176 places, 149 transitions, 1467 flow. Second operand 10 states and 166 transitions. [2024-05-12 13:09:35,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 169 transitions, 1991 flow [2024-05-12 13:09:35,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 169 transitions, 1923 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:09:35,303 INFO L231 Difference]: Finished difference. Result has 178 places, 151 transitions, 1540 flow [2024-05-12 13:09:35,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1540, PETRI_PLACES=178, PETRI_TRANSITIONS=151} [2024-05-12 13:09:35,303 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-05-12 13:09:35,303 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 151 transitions, 1540 flow [2024-05-12 13:09:35,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:35,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:35,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:35,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:09:35,304 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:35,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1827521154, now seen corresponding path program 4 times [2024-05-12 13:09:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:35,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175215891] [2024-05-12 13:09:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:35,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:36,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:36,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175215891] [2024-05-12 13:09:36,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175215891] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:36,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:36,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:36,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521357915] [2024-05-12 13:09:36,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:36,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:36,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:36,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:36,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 151 transitions, 1540 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:36,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:36,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:36,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:37,048 INFO L124 PetriNetUnfolderBase]: 815/1765 cut-off events. [2024-05-12 13:09:37,049 INFO L125 PetriNetUnfolderBase]: For 26346/26348 co-relation queries the response was YES. [2024-05-12 13:09:37,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7572 conditions, 1765 events. 815/1765 cut-off events. For 26346/26348 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 11450 event pairs, 238 based on Foata normal form. 3/1677 useless extension candidates. Maximal degree in co-relation 7490. Up to 1334 conditions per place. [2024-05-12 13:09:37,060 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 133 selfloop transitions, 29 changer transitions 0/170 dead transitions. [2024-05-12 13:09:37,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 170 transitions, 1928 flow [2024-05-12 13:09:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-05-12 13:09:37,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-05-12 13:09:37,061 INFO L175 Difference]: Start difference. First operand has 178 places, 151 transitions, 1540 flow. Second operand 10 states and 161 transitions. [2024-05-12 13:09:37,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 170 transitions, 1928 flow [2024-05-12 13:09:37,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 170 transitions, 1791 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:37,130 INFO L231 Difference]: Finished difference. Result has 181 places, 151 transitions, 1466 flow [2024-05-12 13:09:37,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1466, PETRI_PLACES=181, PETRI_TRANSITIONS=151} [2024-05-12 13:09:37,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-05-12 13:09:37,131 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 151 transitions, 1466 flow [2024-05-12 13:09:37,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:37,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:37,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:37,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:09:37,131 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:37,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash 983792824, now seen corresponding path program 5 times [2024-05-12 13:09:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703303581] [2024-05-12 13:09:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:37,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:38,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703303581] [2024-05-12 13:09:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703303581] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:38,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:38,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730276735] [2024-05-12 13:09:38,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:38,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:38,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:38,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:38,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 151 transitions, 1466 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:38,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:38,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:38,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:39,299 INFO L124 PetriNetUnfolderBase]: 820/1775 cut-off events. [2024-05-12 13:09:39,299 INFO L125 PetriNetUnfolderBase]: For 26683/26687 co-relation queries the response was YES. [2024-05-12 13:09:39,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 1775 events. 820/1775 cut-off events. For 26683/26687 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11555 event pairs, 243 based on Foata normal form. 1/1684 useless extension candidates. Maximal degree in co-relation 7479. Up to 1215 conditions per place. [2024-05-12 13:09:39,312 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 106 selfloop transitions, 58 changer transitions 0/172 dead transitions. [2024-05-12 13:09:39,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 172 transitions, 1925 flow [2024-05-12 13:09:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:39,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 13:09:39,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-05-12 13:09:39,313 INFO L175 Difference]: Start difference. First operand has 181 places, 151 transitions, 1466 flow. Second operand 10 states and 165 transitions. [2024-05-12 13:09:39,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 172 transitions, 1925 flow [2024-05-12 13:09:39,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 172 transitions, 1833 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-05-12 13:09:39,389 INFO L231 Difference]: Finished difference. Result has 182 places, 155 transitions, 1611 flow [2024-05-12 13:09:39,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1611, PETRI_PLACES=182, PETRI_TRANSITIONS=155} [2024-05-12 13:09:39,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-05-12 13:09:39,390 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 155 transitions, 1611 flow [2024-05-12 13:09:39,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:39,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:39,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:39,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:09:39,390 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:39,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash 983801194, now seen corresponding path program 6 times [2024-05-12 13:09:39,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:39,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366682550] [2024-05-12 13:09:39,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:39,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:40,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:40,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366682550] [2024-05-12 13:09:40,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366682550] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:40,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:40,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:40,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114335393] [2024-05-12 13:09:40,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:40,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:40,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:40,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 155 transitions, 1611 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:40,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:40,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:40,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:40,989 INFO L124 PetriNetUnfolderBase]: 832/1798 cut-off events. [2024-05-12 13:09:40,990 INFO L125 PetriNetUnfolderBase]: For 30464/30466 co-relation queries the response was YES. [2024-05-12 13:09:41,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 1798 events. 832/1798 cut-off events. For 30464/30466 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11723 event pairs, 238 based on Foata normal form. 3/1710 useless extension candidates. Maximal degree in co-relation 7975. Up to 1193 conditions per place. [2024-05-12 13:09:41,005 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 107 selfloop transitions, 63 changer transitions 0/178 dead transitions. [2024-05-12 13:09:41,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 178 transitions, 2337 flow [2024-05-12 13:09:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:41,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 13:09:41,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-05-12 13:09:41,006 INFO L175 Difference]: Start difference. First operand has 182 places, 155 transitions, 1611 flow. Second operand 9 states and 156 transitions. [2024-05-12 13:09:41,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 178 transitions, 2337 flow [2024-05-12 13:09:41,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 178 transitions, 2207 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:41,089 INFO L231 Difference]: Finished difference. Result has 184 places, 159 transitions, 1735 flow [2024-05-12 13:09:41,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1735, PETRI_PLACES=184, PETRI_TRANSITIONS=159} [2024-05-12 13:09:41,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-05-12 13:09:41,090 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 159 transitions, 1735 flow [2024-05-12 13:09:41,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:41,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:41,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:41,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:09:41,091 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:41,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:41,091 INFO L85 PathProgramCache]: Analyzing trace with hash -78780772, now seen corresponding path program 3 times [2024-05-12 13:09:41,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:41,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295069899] [2024-05-12 13:09:41,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:41,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:42,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:42,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295069899] [2024-05-12 13:09:42,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295069899] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:42,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626906115] [2024-05-12 13:09:42,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:42,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:42,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:42,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 159 transitions, 1735 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:42,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:42,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:42,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:42,660 INFO L124 PetriNetUnfolderBase]: 848/1835 cut-off events. [2024-05-12 13:09:42,661 INFO L125 PetriNetUnfolderBase]: For 32893/32895 co-relation queries the response was YES. [2024-05-12 13:09:42,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8227 conditions, 1835 events. 848/1835 cut-off events. For 32893/32895 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12041 event pairs, 241 based on Foata normal form. 4/1746 useless extension candidates. Maximal degree in co-relation 8141. Up to 1340 conditions per place. [2024-05-12 13:09:42,674 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 139 selfloop transitions, 36 changer transitions 0/183 dead transitions. [2024-05-12 13:09:42,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 183 transitions, 2179 flow [2024-05-12 13:09:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:42,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 13:09:42,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-05-12 13:09:42,676 INFO L175 Difference]: Start difference. First operand has 184 places, 159 transitions, 1735 flow. Second operand 10 states and 165 transitions. [2024-05-12 13:09:42,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 183 transitions, 2179 flow [2024-05-12 13:09:42,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 183 transitions, 1892 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-05-12 13:09:42,763 INFO L231 Difference]: Finished difference. Result has 184 places, 160 transitions, 1544 flow [2024-05-12 13:09:42,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1544, PETRI_PLACES=184, PETRI_TRANSITIONS=160} [2024-05-12 13:09:42,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-05-12 13:09:42,763 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 160 transitions, 1544 flow [2024-05-12 13:09:42,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:42,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:42,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:42,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:09:42,764 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:42,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:42,764 INFO L85 PathProgramCache]: Analyzing trace with hash 983562184, now seen corresponding path program 7 times [2024-05-12 13:09:42,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:42,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396013212] [2024-05-12 13:09:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:42,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:44,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:44,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396013212] [2024-05-12 13:09:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396013212] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:44,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:44,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:44,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459424691] [2024-05-12 13:09:44,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:44,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:44,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:44,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 160 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:44,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:44,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:44,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:44,644 INFO L124 PetriNetUnfolderBase]: 846/1832 cut-off events. [2024-05-12 13:09:44,644 INFO L125 PetriNetUnfolderBase]: For 28423/28425 co-relation queries the response was YES. [2024-05-12 13:09:44,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 1832 events. 846/1832 cut-off events. For 28423/28425 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12062 event pairs, 241 based on Foata normal form. 3/1741 useless extension candidates. Maximal degree in co-relation 7730. Up to 1306 conditions per place. [2024-05-12 13:09:44,662 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 123 selfloop transitions, 48 changer transitions 0/179 dead transitions. [2024-05-12 13:09:44,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 179 transitions, 1950 flow [2024-05-12 13:09:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-05-12 13:09:44,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-05-12 13:09:44,663 INFO L175 Difference]: Start difference. First operand has 184 places, 160 transitions, 1544 flow. Second operand 10 states and 163 transitions. [2024-05-12 13:09:44,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 179 transitions, 1950 flow [2024-05-12 13:09:44,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 179 transitions, 1812 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-05-12 13:09:44,737 INFO L231 Difference]: Finished difference. Result has 184 places, 160 transitions, 1507 flow [2024-05-12 13:09:44,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1507, PETRI_PLACES=184, PETRI_TRANSITIONS=160} [2024-05-12 13:09:44,737 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-05-12 13:09:44,737 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 160 transitions, 1507 flow [2024-05-12 13:09:44,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:44,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:44,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:44,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:09:44,738 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:44,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1851908896, now seen corresponding path program 4 times [2024-05-12 13:09:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:44,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440339711] [2024-05-12 13:09:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:44,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:45,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:45,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440339711] [2024-05-12 13:09:45,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440339711] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:45,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:45,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:45,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399738830] [2024-05-12 13:09:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:45,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:45,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:45,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:45,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:45,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:45,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 160 transitions, 1507 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:45,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:45,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:45,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:46,264 INFO L124 PetriNetUnfolderBase]: 867/1875 cut-off events. [2024-05-12 13:09:46,264 INFO L125 PetriNetUnfolderBase]: For 30256/30258 co-relation queries the response was YES. [2024-05-12 13:09:46,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7905 conditions, 1875 events. 867/1875 cut-off events. For 30256/30258 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12365 event pairs, 244 based on Foata normal form. 2/1781 useless extension candidates. Maximal degree in co-relation 7823. Up to 1460 conditions per place. [2024-05-12 13:09:46,277 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 161 selfloop transitions, 15 changer transitions 0/184 dead transitions. [2024-05-12 13:09:46,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 184 transitions, 1958 flow [2024-05-12 13:09:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 13:09:46,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-05-12 13:09:46,278 INFO L175 Difference]: Start difference. First operand has 184 places, 160 transitions, 1507 flow. Second operand 10 states and 158 transitions. [2024-05-12 13:09:46,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 184 transitions, 1958 flow [2024-05-12 13:09:46,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 184 transitions, 1846 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-05-12 13:09:46,342 INFO L231 Difference]: Finished difference. Result has 186 places, 163 transitions, 1473 flow [2024-05-12 13:09:46,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1473, PETRI_PLACES=186, PETRI_TRANSITIONS=163} [2024-05-12 13:09:46,343 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-05-12 13:09:46,343 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 163 transitions, 1473 flow [2024-05-12 13:09:46,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:46,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:46,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:46,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:09:46,343 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:46,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:46,344 INFO L85 PathProgramCache]: Analyzing trace with hash -70737512, now seen corresponding path program 8 times [2024-05-12 13:09:46,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:46,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593537991] [2024-05-12 13:09:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:47,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593537991] [2024-05-12 13:09:47,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593537991] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:47,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:47,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:47,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085113347] [2024-05-12 13:09:47,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:47,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:47,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:47,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:47,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 163 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:47,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:47,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:47,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:48,351 INFO L124 PetriNetUnfolderBase]: 879/1897 cut-off events. [2024-05-12 13:09:48,351 INFO L125 PetriNetUnfolderBase]: For 31819/31821 co-relation queries the response was YES. [2024-05-12 13:09:48,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 1897 events. 879/1897 cut-off events. For 31819/31821 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12517 event pairs, 244 based on Foata normal form. 1/1801 useless extension candidates. Maximal degree in co-relation 8024. Up to 1482 conditions per place. [2024-05-12 13:09:48,364 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 159 selfloop transitions, 20 changer transitions 0/187 dead transitions. [2024-05-12 13:09:48,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 187 transitions, 2099 flow [2024-05-12 13:09:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:09:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:09:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 13:09:48,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-05-12 13:09:48,366 INFO L175 Difference]: Start difference. First operand has 186 places, 163 transitions, 1473 flow. Second operand 11 states and 171 transitions. [2024-05-12 13:09:48,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 187 transitions, 2099 flow [2024-05-12 13:09:48,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 187 transitions, 2054 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:48,433 INFO L231 Difference]: Finished difference. Result has 190 places, 167 transitions, 1577 flow [2024-05-12 13:09:48,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1577, PETRI_PLACES=190, PETRI_TRANSITIONS=167} [2024-05-12 13:09:48,433 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-05-12 13:09:48,434 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 167 transitions, 1577 flow [2024-05-12 13:09:48,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:48,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:48,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:48,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:09:48,434 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:48,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:48,435 INFO L85 PathProgramCache]: Analyzing trace with hash -868536742, now seen corresponding path program 9 times [2024-05-12 13:09:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871575515] [2024-05-12 13:09:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:48,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:49,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:49,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:49,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871575515] [2024-05-12 13:09:49,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871575515] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:49,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:49,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:49,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165584909] [2024-05-12 13:09:49,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:49,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:49,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:49,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:49,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:49,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 167 transitions, 1577 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:49,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:49,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:49,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:50,142 INFO L124 PetriNetUnfolderBase]: 877/1894 cut-off events. [2024-05-12 13:09:50,142 INFO L125 PetriNetUnfolderBase]: For 30684/30686 co-relation queries the response was YES. [2024-05-12 13:09:50,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7953 conditions, 1894 events. 877/1894 cut-off events. For 30684/30686 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12514 event pairs, 244 based on Foata normal form. 1/1798 useless extension candidates. Maximal degree in co-relation 7868. Up to 1464 conditions per place. [2024-05-12 13:09:50,157 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 151 selfloop transitions, 24 changer transitions 0/183 dead transitions. [2024-05-12 13:09:50,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 183 transitions, 2085 flow [2024-05-12 13:09:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:09:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:09:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-05-12 13:09:50,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-05-12 13:09:50,158 INFO L175 Difference]: Start difference. First operand has 190 places, 167 transitions, 1577 flow. Second operand 9 states and 146 transitions. [2024-05-12 13:09:50,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 183 transitions, 2085 flow [2024-05-12 13:09:50,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 183 transitions, 2023 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-05-12 13:09:50,222 INFO L231 Difference]: Finished difference. Result has 192 places, 167 transitions, 1574 flow [2024-05-12 13:09:50,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1574, PETRI_PLACES=192, PETRI_TRANSITIONS=167} [2024-05-12 13:09:50,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-05-12 13:09:50,222 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 167 transitions, 1574 flow [2024-05-12 13:09:50,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:50,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:50,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:50,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:09:50,223 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:50,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash 2057506744, now seen corresponding path program 5 times [2024-05-12 13:09:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:50,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156445829] [2024-05-12 13:09:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:50,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:51,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:51,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156445829] [2024-05-12 13:09:51,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156445829] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:51,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:51,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:51,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344937459] [2024-05-12 13:09:51,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:51,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:51,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:51,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:51,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 167 transitions, 1574 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:51,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:51,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:51,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:51,780 INFO L124 PetriNetUnfolderBase]: 893/1930 cut-off events. [2024-05-12 13:09:51,780 INFO L125 PetriNetUnfolderBase]: For 33204/33206 co-relation queries the response was YES. [2024-05-12 13:09:51,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8168 conditions, 1930 events. 893/1930 cut-off events. For 33204/33206 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12825 event pairs, 256 based on Foata normal form. 2/1835 useless extension candidates. Maximal degree in co-relation 8081. Up to 1475 conditions per place. [2024-05-12 13:09:51,795 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 163 selfloop transitions, 20 changer transitions 0/191 dead transitions. [2024-05-12 13:09:51,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 191 transitions, 2032 flow [2024-05-12 13:09:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:09:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:09:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-05-12 13:09:51,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-05-12 13:09:51,802 INFO L175 Difference]: Start difference. First operand has 192 places, 167 transitions, 1574 flow. Second operand 11 states and 172 transitions. [2024-05-12 13:09:51,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 191 transitions, 2032 flow [2024-05-12 13:09:51,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 191 transitions, 1937 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-05-12 13:09:51,878 INFO L231 Difference]: Finished difference. Result has 194 places, 168 transitions, 1549 flow [2024-05-12 13:09:51,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1549, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2024-05-12 13:09:51,878 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-05-12 13:09:51,879 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 1549 flow [2024-05-12 13:09:51,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:51,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:51,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:51,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:09:51,879 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:51,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1279376894, now seen corresponding path program 6 times [2024-05-12 13:09:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602524452] [2024-05-12 13:09:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:52,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602524452] [2024-05-12 13:09:52,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602524452] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:52,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:52,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:09:52,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394880987] [2024-05-12 13:09:52,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:52,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:09:52,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:52,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:09:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:09:52,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:52,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 1549 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:52,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:52,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:52,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:53,351 INFO L124 PetriNetUnfolderBase]: 890/1917 cut-off events. [2024-05-12 13:09:53,351 INFO L125 PetriNetUnfolderBase]: For 29447/29449 co-relation queries the response was YES. [2024-05-12 13:09:53,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7998 conditions, 1917 events. 890/1917 cut-off events. For 29447/29449 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12663 event pairs, 243 based on Foata normal form. 2/1828 useless extension candidates. Maximal degree in co-relation 7911. Up to 1423 conditions per place. [2024-05-12 13:09:53,363 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 165 selfloop transitions, 20 changer transitions 0/193 dead transitions. [2024-05-12 13:09:53,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 193 transitions, 1995 flow [2024-05-12 13:09:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-05-12 13:09:53,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-05-12 13:09:53,364 INFO L175 Difference]: Start difference. First operand has 194 places, 168 transitions, 1549 flow. Second operand 10 states and 163 transitions. [2024-05-12 13:09:53,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 193 transitions, 1995 flow [2024-05-12 13:09:53,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 193 transitions, 1931 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-05-12 13:09:53,426 INFO L231 Difference]: Finished difference. Result has 194 places, 168 transitions, 1529 flow [2024-05-12 13:09:53,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1529, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2024-05-12 13:09:53,426 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-05-12 13:09:53,426 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 1529 flow [2024-05-12 13:09:53,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:53,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:53,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:53,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:09:53,427 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:53,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1268892694, now seen corresponding path program 10 times [2024-05-12 13:09:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:53,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263232623] [2024-05-12 13:09:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:53,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:55,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:55,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263232623] [2024-05-12 13:09:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263232623] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:55,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:55,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:55,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181384351] [2024-05-12 13:09:55,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:55,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:55,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:55,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:55,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 1529 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:55,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:55,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:55,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:55,737 INFO L124 PetriNetUnfolderBase]: 888/1922 cut-off events. [2024-05-12 13:09:55,737 INFO L125 PetriNetUnfolderBase]: For 25808/25810 co-relation queries the response was YES. [2024-05-12 13:09:55,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7826 conditions, 1922 events. 888/1922 cut-off events. For 25808/25810 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12752 event pairs, 255 based on Foata normal form. 1/1824 useless extension candidates. Maximal degree in co-relation 7739. Up to 1510 conditions per place. [2024-05-12 13:09:55,753 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 161 selfloop transitions, 16 changer transitions 0/185 dead transitions. [2024-05-12 13:09:55,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 185 transitions, 1935 flow [2024-05-12 13:09:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 13:09:55,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-05-12 13:09:55,754 INFO L175 Difference]: Start difference. First operand has 194 places, 168 transitions, 1529 flow. Second operand 10 states and 155 transitions. [2024-05-12 13:09:55,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 185 transitions, 1935 flow [2024-05-12 13:09:55,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 185 transitions, 1841 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-05-12 13:09:55,825 INFO L231 Difference]: Finished difference. Result has 196 places, 168 transitions, 1472 flow [2024-05-12 13:09:55,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1472, PETRI_PLACES=196, PETRI_TRANSITIONS=168} [2024-05-12 13:09:55,825 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-05-12 13:09:55,825 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 168 transitions, 1472 flow [2024-05-12 13:09:55,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:55,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:55,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:55,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:09:55,826 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:55,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:55,826 INFO L85 PathProgramCache]: Analyzing trace with hash 514311398, now seen corresponding path program 1 times [2024-05-12 13:09:55,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:55,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673252272] [2024-05-12 13:09:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:55,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:56,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:56,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673252272] [2024-05-12 13:09:56,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673252272] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:56,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:56,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220149166] [2024-05-12 13:09:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:56,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:56,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:56,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:56,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:56,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 168 transitions, 1472 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:56,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:56,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:56,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:57,382 INFO L124 PetriNetUnfolderBase]: 904/1935 cut-off events. [2024-05-12 13:09:57,382 INFO L125 PetriNetUnfolderBase]: For 27085/27085 co-relation queries the response was YES. [2024-05-12 13:09:57,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 1935 events. 904/1935 cut-off events. For 27085/27085 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12761 event pairs, 189 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 7664. Up to 1420 conditions per place. [2024-05-12 13:09:57,396 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 179 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2024-05-12 13:09:57,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 206 transitions, 2000 flow [2024-05-12 13:09:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 13:09:57,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-05-12 13:09:57,397 INFO L175 Difference]: Start difference. First operand has 196 places, 168 transitions, 1472 flow. Second operand 10 states and 172 transitions. [2024-05-12 13:09:57,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 206 transitions, 2000 flow [2024-05-12 13:09:57,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 206 transitions, 1963 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 13:09:57,471 INFO L231 Difference]: Finished difference. Result has 197 places, 169 transitions, 1493 flow [2024-05-12 13:09:57,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1493, PETRI_PLACES=197, PETRI_TRANSITIONS=169} [2024-05-12 13:09:57,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-05-12 13:09:57,473 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 169 transitions, 1493 flow [2024-05-12 13:09:57,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:57,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:57,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:57,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:09:57,473 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:57,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:57,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1006517978, now seen corresponding path program 2 times [2024-05-12 13:09:57,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:57,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642103507] [2024-05-12 13:09:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:57,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:58,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:58,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642103507] [2024-05-12 13:09:58,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642103507] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:58,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:58,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837804682] [2024-05-12 13:09:58,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:58,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:58,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:58,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:58,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:58,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:58,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 169 transitions, 1493 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:58,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:58,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:58,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:09:58,831 INFO L124 PetriNetUnfolderBase]: 956/2051 cut-off events. [2024-05-12 13:09:58,831 INFO L125 PetriNetUnfolderBase]: For 37902/37902 co-relation queries the response was YES. [2024-05-12 13:09:58,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8228 conditions, 2051 events. 956/2051 cut-off events. For 37902/37902 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13785 event pairs, 248 based on Foata normal form. 8/1961 useless extension candidates. Maximal degree in co-relation 8139. Up to 1458 conditions per place. [2024-05-12 13:09:58,849 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 179 selfloop transitions, 20 changer transitions 0/207 dead transitions. [2024-05-12 13:09:58,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 207 transitions, 2031 flow [2024-05-12 13:09:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:09:58,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:09:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 13:09:58,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-05-12 13:09:58,850 INFO L175 Difference]: Start difference. First operand has 197 places, 169 transitions, 1493 flow. Second operand 10 states and 172 transitions. [2024-05-12 13:09:58,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 207 transitions, 2031 flow [2024-05-12 13:09:58,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 207 transitions, 1983 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-05-12 13:09:58,942 INFO L231 Difference]: Finished difference. Result has 199 places, 169 transitions, 1488 flow [2024-05-12 13:09:58,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1488, PETRI_PLACES=199, PETRI_TRANSITIONS=169} [2024-05-12 13:09:58,942 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 158 predicate places. [2024-05-12 13:09:58,942 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 169 transitions, 1488 flow [2024-05-12 13:09:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:58,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:09:58,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:09:58,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:09:58,943 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:09:58,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:09:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1001011448, now seen corresponding path program 3 times [2024-05-12 13:09:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:09:58,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492502696] [2024-05-12 13:09:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:09:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:09:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:09:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:09:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:09:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492502696] [2024-05-12 13:09:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492502696] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:09:59,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:09:59,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:09:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854686372] [2024-05-12 13:09:59,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:09:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:09:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:09:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:09:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:09:59,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:09:59,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 169 transitions, 1488 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:09:59,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:09:59,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:09:59,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:00,403 INFO L124 PetriNetUnfolderBase]: 1089/2378 cut-off events. [2024-05-12 13:10:00,404 INFO L125 PetriNetUnfolderBase]: For 57416/57416 co-relation queries the response was YES. [2024-05-12 13:10:00,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9901 conditions, 2378 events. 1089/2378 cut-off events. For 57416/57416 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16754 event pairs, 345 based on Foata normal form. 8/2269 useless extension candidates. Maximal degree in co-relation 9811. Up to 1562 conditions per place. [2024-05-12 13:10:00,422 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 177 selfloop transitions, 23 changer transitions 0/208 dead transitions. [2024-05-12 13:10:00,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 208 transitions, 2198 flow [2024-05-12 13:10:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-05-12 13:10:00,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-05-12 13:10:00,423 INFO L175 Difference]: Start difference. First operand has 199 places, 169 transitions, 1488 flow. Second operand 10 states and 176 transitions. [2024-05-12 13:10:00,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 208 transitions, 2198 flow [2024-05-12 13:10:00,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 208 transitions, 2159 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:00,565 INFO L231 Difference]: Finished difference. Result has 201 places, 169 transitions, 1498 flow [2024-05-12 13:10:00,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1498, PETRI_PLACES=201, PETRI_TRANSITIONS=169} [2024-05-12 13:10:00,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-05-12 13:10:00,566 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 169 transitions, 1498 flow [2024-05-12 13:10:00,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:00,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:00,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:10:00,566 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:00,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1000804058, now seen corresponding path program 4 times [2024-05-12 13:10:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869267612] [2024-05-12 13:10:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:01,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:01,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869267612] [2024-05-12 13:10:01,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869267612] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:01,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:01,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481560331] [2024-05-12 13:10:01,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:01,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:01,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:01,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:01,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:01,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:01,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 169 transitions, 1498 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:01,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:01,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:01,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:02,285 INFO L124 PetriNetUnfolderBase]: 1086/2405 cut-off events. [2024-05-12 13:10:02,285 INFO L125 PetriNetUnfolderBase]: For 46663/46663 co-relation queries the response was YES. [2024-05-12 13:10:02,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9822 conditions, 2405 events. 1086/2405 cut-off events. For 46663/46663 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17100 event pairs, 392 based on Foata normal form. 2/2279 useless extension candidates. Maximal degree in co-relation 9731. Up to 1834 conditions per place. [2024-05-12 13:10:02,305 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 166 selfloop transitions, 23 changer transitions 0/197 dead transitions. [2024-05-12 13:10:02,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 197 transitions, 1980 flow [2024-05-12 13:10:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-05-12 13:10:02,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-05-12 13:10:02,306 INFO L175 Difference]: Start difference. First operand has 201 places, 169 transitions, 1498 flow. Second operand 10 states and 164 transitions. [2024-05-12 13:10:02,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 197 transitions, 1980 flow [2024-05-12 13:10:02,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 197 transitions, 1935 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:02,422 INFO L231 Difference]: Finished difference. Result has 203 places, 170 transitions, 1521 flow [2024-05-12 13:10:02,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1521, PETRI_PLACES=203, PETRI_TRANSITIONS=170} [2024-05-12 13:10:02,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-05-12 13:10:02,423 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 170 transitions, 1521 flow [2024-05-12 13:10:02,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:02,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:02,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:02,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:10:02,424 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:02,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash 49407360, now seen corresponding path program 1 times [2024-05-12 13:10:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:02,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172801899] [2024-05-12 13:10:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:02,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:03,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:03,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172801899] [2024-05-12 13:10:03,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172801899] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:03,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:03,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:03,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745292059] [2024-05-12 13:10:03,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:03,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:03,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:03,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:03,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:03,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:03,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 170 transitions, 1521 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:03,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:03,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:03,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:04,486 INFO L124 PetriNetUnfolderBase]: 1076/2386 cut-off events. [2024-05-12 13:10:04,486 INFO L125 PetriNetUnfolderBase]: For 44191/44191 co-relation queries the response was YES. [2024-05-12 13:10:04,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9362 conditions, 2386 events. 1076/2386 cut-off events. For 44191/44191 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16955 event pairs, 393 based on Foata normal form. 8/2268 useless extension candidates. Maximal degree in co-relation 9270. Up to 1693 conditions per place. [2024-05-12 13:10:04,505 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 170 selfloop transitions, 24 changer transitions 0/202 dead transitions. [2024-05-12 13:10:04,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 202 transitions, 2049 flow [2024-05-12 13:10:04,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:04,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-05-12 13:10:04,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-05-12 13:10:04,507 INFO L175 Difference]: Start difference. First operand has 203 places, 170 transitions, 1521 flow. Second operand 11 states and 181 transitions. [2024-05-12 13:10:04,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 202 transitions, 2049 flow [2024-05-12 13:10:04,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 202 transitions, 1951 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:04,621 INFO L231 Difference]: Finished difference. Result has 206 places, 170 transitions, 1476 flow [2024-05-12 13:10:04,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1476, PETRI_PLACES=206, PETRI_TRANSITIONS=170} [2024-05-12 13:10:04,622 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-05-12 13:10:04,622 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 170 transitions, 1476 flow [2024-05-12 13:10:04,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:04,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:04,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:04,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:10:04,622 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:04,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1108768558, now seen corresponding path program 5 times [2024-05-12 13:10:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:04,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913312441] [2024-05-12 13:10:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:04,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913312441] [2024-05-12 13:10:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913312441] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:05,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:05,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:05,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367752733] [2024-05-12 13:10:05,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:05,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:05,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:05,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:05,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 170 transitions, 1476 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:05,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:05,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:05,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:06,585 INFO L124 PetriNetUnfolderBase]: 1092/2431 cut-off events. [2024-05-12 13:10:06,586 INFO L125 PetriNetUnfolderBase]: For 33957/33957 co-relation queries the response was YES. [2024-05-12 13:10:06,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 2431 events. 1092/2431 cut-off events. For 33957/33957 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17401 event pairs, 396 based on Foata normal form. 2/2303 useless extension candidates. Maximal degree in co-relation 9329. Up to 1843 conditions per place. [2024-05-12 13:10:06,609 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 164 selfloop transitions, 24 changer transitions 0/196 dead transitions. [2024-05-12 13:10:06,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 196 transitions, 1952 flow [2024-05-12 13:10:06,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:06,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-05-12 13:10:06,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-05-12 13:10:06,610 INFO L175 Difference]: Start difference. First operand has 206 places, 170 transitions, 1476 flow. Second operand 10 states and 164 transitions. [2024-05-12 13:10:06,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 196 transitions, 1952 flow [2024-05-12 13:10:06,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 1900 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-05-12 13:10:06,740 INFO L231 Difference]: Finished difference. Result has 207 places, 171 transitions, 1496 flow [2024-05-12 13:10:06,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1496, PETRI_PLACES=207, PETRI_TRANSITIONS=171} [2024-05-12 13:10:06,740 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-05-12 13:10:06,740 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 171 transitions, 1496 flow [2024-05-12 13:10:06,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:06,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:06,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:06,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:10:06,741 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:06,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:06,741 INFO L85 PathProgramCache]: Analyzing trace with hash -822527254, now seen corresponding path program 6 times [2024-05-12 13:10:06,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707647789] [2024-05-12 13:10:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:06,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707647789] [2024-05-12 13:10:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707647789] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315767496] [2024-05-12 13:10:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:07,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:07,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 171 transitions, 1496 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:07,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:07,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:07,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:08,488 INFO L124 PetriNetUnfolderBase]: 1108/2467 cut-off events. [2024-05-12 13:10:08,488 INFO L125 PetriNetUnfolderBase]: For 35634/35634 co-relation queries the response was YES. [2024-05-12 13:10:08,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9692 conditions, 2467 events. 1108/2467 cut-off events. For 35634/35634 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17714 event pairs, 404 based on Foata normal form. 2/2337 useless extension candidates. Maximal degree in co-relation 9598. Up to 1846 conditions per place. [2024-05-12 13:10:08,509 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 158 selfloop transitions, 31 changer transitions 0/197 dead transitions. [2024-05-12 13:10:08,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 197 transitions, 1976 flow [2024-05-12 13:10:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 13:10:08,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-05-12 13:10:08,510 INFO L175 Difference]: Start difference. First operand has 207 places, 171 transitions, 1496 flow. Second operand 10 states and 167 transitions. [2024-05-12 13:10:08,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 197 transitions, 1976 flow [2024-05-12 13:10:08,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 197 transitions, 1911 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:08,634 INFO L231 Difference]: Finished difference. Result has 209 places, 172 transitions, 1519 flow [2024-05-12 13:10:08,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=209, PETRI_TRANSITIONS=172} [2024-05-12 13:10:08,635 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-05-12 13:10:08,635 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 172 transitions, 1519 flow [2024-05-12 13:10:08,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:08,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:08,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:08,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:10:08,636 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:08,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash -512215894, now seen corresponding path program 7 times [2024-05-12 13:10:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:08,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693478653] [2024-05-12 13:10:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:09,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:09,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693478653] [2024-05-12 13:10:09,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693478653] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:09,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:09,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:09,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004489998] [2024-05-12 13:10:09,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:09,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:09,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:09,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:09,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:09,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 172 transitions, 1519 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:09,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:09,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:09,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:10,278 INFO L124 PetriNetUnfolderBase]: 1160/2567 cut-off events. [2024-05-12 13:10:10,278 INFO L125 PetriNetUnfolderBase]: For 48438/48438 co-relation queries the response was YES. [2024-05-12 13:10:10,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10094 conditions, 2567 events. 1160/2567 cut-off events. For 48438/48438 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 18578 event pairs, 404 based on Foata normal form. 8/2446 useless extension candidates. Maximal degree in co-relation 9999. Up to 1742 conditions per place. [2024-05-12 13:10:10,301 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 185 selfloop transitions, 17 changer transitions 0/210 dead transitions. [2024-05-12 13:10:10,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 210 transitions, 2139 flow [2024-05-12 13:10:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 13:10:10,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-05-12 13:10:10,302 INFO L175 Difference]: Start difference. First operand has 209 places, 172 transitions, 1519 flow. Second operand 10 states and 172 transitions. [2024-05-12 13:10:10,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 210 transitions, 2139 flow [2024-05-12 13:10:10,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 210 transitions, 2059 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:10,452 INFO L231 Difference]: Finished difference. Result has 212 places, 173 transitions, 1494 flow [2024-05-12 13:10:10,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1494, PETRI_PLACES=212, PETRI_TRANSITIONS=173} [2024-05-12 13:10:10,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-05-12 13:10:10,453 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 173 transitions, 1494 flow [2024-05-12 13:10:10,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:10,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:10,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:10,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:10:10,453 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:10,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash -318276484, now seen corresponding path program 8 times [2024-05-12 13:10:10,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:10,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147227515] [2024-05-12 13:10:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:10,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:11,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:11,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147227515] [2024-05-12 13:10:11,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147227515] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:11,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:11,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:11,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508195431] [2024-05-12 13:10:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:11,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:11,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:11,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:11,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:11,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 173 transitions, 1494 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:11,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:11,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:11,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:12,200 INFO L124 PetriNetUnfolderBase]: 1238/2785 cut-off events. [2024-05-12 13:10:12,201 INFO L125 PetriNetUnfolderBase]: For 55115/55115 co-relation queries the response was YES. [2024-05-12 13:10:12,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11285 conditions, 2785 events. 1238/2785 cut-off events. For 55115/55115 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 20791 event pairs, 490 based on Foata normal form. 2/2639 useless extension candidates. Maximal degree in co-relation 11188. Up to 1902 conditions per place. [2024-05-12 13:10:12,226 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 165 selfloop transitions, 34 changer transitions 0/207 dead transitions. [2024-05-12 13:10:12,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 207 transitions, 2186 flow [2024-05-12 13:10:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:12,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-05-12 13:10:12,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-05-12 13:10:12,227 INFO L175 Difference]: Start difference. First operand has 212 places, 173 transitions, 1494 flow. Second operand 10 states and 175 transitions. [2024-05-12 13:10:12,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 207 transitions, 2186 flow [2024-05-12 13:10:12,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 207 transitions, 2158 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 13:10:12,408 INFO L231 Difference]: Finished difference. Result has 215 places, 174 transitions, 1562 flow [2024-05-12 13:10:12,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1562, PETRI_PLACES=215, PETRI_TRANSITIONS=174} [2024-05-12 13:10:12,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-05-12 13:10:12,408 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 174 transitions, 1562 flow [2024-05-12 13:10:12,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:12,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:12,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:12,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:10:12,409 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:12,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:12,409 INFO L85 PathProgramCache]: Analyzing trace with hash 553628742, now seen corresponding path program 9 times [2024-05-12 13:10:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219632094] [2024-05-12 13:10:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:12,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219632094] [2024-05-12 13:10:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219632094] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:13,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:13,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:13,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870959779] [2024-05-12 13:10:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:13,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:13,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:13,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:13,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 174 transitions, 1562 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:13,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:13,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:13,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:14,095 INFO L124 PetriNetUnfolderBase]: 1254/2801 cut-off events. [2024-05-12 13:10:14,095 INFO L125 PetriNetUnfolderBase]: For 58634/58634 co-relation queries the response was YES. [2024-05-12 13:10:14,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11665 conditions, 2801 events. 1254/2801 cut-off events. For 58634/58634 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 20864 event pairs, 476 based on Foata normal form. 2/2651 useless extension candidates. Maximal degree in co-relation 11567. Up to 2124 conditions per place. [2024-05-12 13:10:14,118 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 185 selfloop transitions, 15 changer transitions 0/208 dead transitions. [2024-05-12 13:10:14,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 208 transitions, 2092 flow [2024-05-12 13:10:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 13:10:14,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-05-12 13:10:14,119 INFO L175 Difference]: Start difference. First operand has 215 places, 174 transitions, 1562 flow. Second operand 10 states and 167 transitions. [2024-05-12 13:10:14,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 208 transitions, 2092 flow [2024-05-12 13:10:14,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 208 transitions, 2006 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:14,278 INFO L231 Difference]: Finished difference. Result has 217 places, 175 transitions, 1536 flow [2024-05-12 13:10:14,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1536, PETRI_PLACES=217, PETRI_TRANSITIONS=175} [2024-05-12 13:10:14,279 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-05-12 13:10:14,279 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 175 transitions, 1536 flow [2024-05-12 13:10:14,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:14,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:14,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:14,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:10:14,280 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:14,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:14,280 INFO L85 PathProgramCache]: Analyzing trace with hash -822317508, now seen corresponding path program 2 times [2024-05-12 13:10:14,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:14,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111925178] [2024-05-12 13:10:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:14,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:16,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:16,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111925178] [2024-05-12 13:10:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111925178] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:16,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:16,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:16,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573595756] [2024-05-12 13:10:16,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:16,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:16,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:16,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:16,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:16,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:16,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 175 transitions, 1536 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:16,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:16,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:16,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:17,029 INFO L124 PetriNetUnfolderBase]: 1244/2806 cut-off events. [2024-05-12 13:10:17,029 INFO L125 PetriNetUnfolderBase]: For 56586/56586 co-relation queries the response was YES. [2024-05-12 13:10:17,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11007 conditions, 2806 events. 1244/2806 cut-off events. For 56586/56586 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21048 event pairs, 501 based on Foata normal form. 8/2660 useless extension candidates. Maximal degree in co-relation 10908. Up to 2035 conditions per place. [2024-05-12 13:10:17,055 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 173 selfloop transitions, 24 changer transitions 0/205 dead transitions. [2024-05-12 13:10:17,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 205 transitions, 2064 flow [2024-05-12 13:10:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-05-12 13:10:17,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-05-12 13:10:17,057 INFO L175 Difference]: Start difference. First operand has 217 places, 175 transitions, 1536 flow. Second operand 11 states and 181 transitions. [2024-05-12 13:10:17,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 205 transitions, 2064 flow [2024-05-12 13:10:17,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 205 transitions, 2014 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:17,217 INFO L231 Difference]: Finished difference. Result has 220 places, 175 transitions, 1538 flow [2024-05-12 13:10:17,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1538, PETRI_PLACES=220, PETRI_TRANSITIONS=175} [2024-05-12 13:10:17,217 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-05-12 13:10:17,217 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 175 transitions, 1538 flow [2024-05-12 13:10:17,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:17,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:17,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:17,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:10:17,218 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:17,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -814898898, now seen corresponding path program 3 times [2024-05-12 13:10:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926679862] [2024-05-12 13:10:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:18,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:18,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926679862] [2024-05-12 13:10:18,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926679862] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:18,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:18,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:18,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78175014] [2024-05-12 13:10:18,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:18,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:18,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 175 transitions, 1538 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:18,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:18,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:19,403 INFO L124 PetriNetUnfolderBase]: 1342/3051 cut-off events. [2024-05-12 13:10:19,403 INFO L125 PetriNetUnfolderBase]: For 71184/71184 co-relation queries the response was YES. [2024-05-12 13:10:19,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12394 conditions, 3051 events. 1342/3051 cut-off events. For 71184/71184 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 23598 event pairs, 534 based on Foata normal form. 6/2894 useless extension candidates. Maximal degree in co-relation 12294. Up to 1773 conditions per place. [2024-05-12 13:10:19,434 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 173 selfloop transitions, 32 changer transitions 0/213 dead transitions. [2024-05-12 13:10:19,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 213 transitions, 2294 flow [2024-05-12 13:10:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-05-12 13:10:19,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-05-12 13:10:19,436 INFO L175 Difference]: Start difference. First operand has 220 places, 175 transitions, 1538 flow. Second operand 11 states and 188 transitions. [2024-05-12 13:10:19,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 213 transitions, 2294 flow [2024-05-12 13:10:19,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 213 transitions, 2248 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:10:19,625 INFO L231 Difference]: Finished difference. Result has 222 places, 175 transitions, 1559 flow [2024-05-12 13:10:19,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1559, PETRI_PLACES=222, PETRI_TRANSITIONS=175} [2024-05-12 13:10:19,626 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-05-12 13:10:19,626 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 175 transitions, 1559 flow [2024-05-12 13:10:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:19,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:19,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:19,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:10:19,626 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:19,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash -815167668, now seen corresponding path program 4 times [2024-05-12 13:10:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:19,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848376594] [2024-05-12 13:10:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:19,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:21,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:21,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848376594] [2024-05-12 13:10:21,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848376594] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:21,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:21,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106191707] [2024-05-12 13:10:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:21,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:21,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:21,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:21,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:21,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:21,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 175 transitions, 1559 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:21,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:21,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:21,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:21,970 INFO L124 PetriNetUnfolderBase]: 1394/3189 cut-off events. [2024-05-12 13:10:21,970 INFO L125 PetriNetUnfolderBase]: For 79971/79971 co-relation queries the response was YES. [2024-05-12 13:10:21,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12954 conditions, 3189 events. 1394/3189 cut-off events. For 79971/79971 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 25106 event pairs, 596 based on Foata normal form. 8/3017 useless extension candidates. Maximal degree in co-relation 12853. Up to 2294 conditions per place. [2024-05-12 13:10:22,000 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 172 selfloop transitions, 25 changer transitions 0/205 dead transitions. [2024-05-12 13:10:22,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 205 transitions, 2087 flow [2024-05-12 13:10:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-05-12 13:10:22,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-05-12 13:10:22,002 INFO L175 Difference]: Start difference. First operand has 222 places, 175 transitions, 1559 flow. Second operand 11 states and 181 transitions. [2024-05-12 13:10:22,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 205 transitions, 2087 flow [2024-05-12 13:10:22,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 205 transitions, 2010 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 13:10:22,209 INFO L231 Difference]: Finished difference. Result has 224 places, 175 transitions, 1537 flow [2024-05-12 13:10:22,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1537, PETRI_PLACES=224, PETRI_TRANSITIONS=175} [2024-05-12 13:10:22,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-05-12 13:10:22,209 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 175 transitions, 1537 flow [2024-05-12 13:10:22,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:22,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:22,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:22,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:10:22,210 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:22,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:22,210 INFO L85 PathProgramCache]: Analyzing trace with hash -814908198, now seen corresponding path program 5 times [2024-05-12 13:10:22,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:22,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424881069] [2024-05-12 13:10:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:22,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:23,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:23,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424881069] [2024-05-12 13:10:23,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424881069] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:23,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:23,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:23,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173931475] [2024-05-12 13:10:23,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:23,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:23,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:23,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:23,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 175 transitions, 1537 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:23,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:23,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:23,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:24,303 INFO L124 PetriNetUnfolderBase]: 1384/3170 cut-off events. [2024-05-12 13:10:24,303 INFO L125 PetriNetUnfolderBase]: For 63612/63614 co-relation queries the response was YES. [2024-05-12 13:10:24,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12263 conditions, 3170 events. 1384/3170 cut-off events. For 63612/63614 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 24961 event pairs, 590 based on Foata normal form. 8/2997 useless extension candidates. Maximal degree in co-relation 12162. Up to 2235 conditions per place. [2024-05-12 13:10:24,328 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 149 selfloop transitions, 46 changer transitions 0/203 dead transitions. [2024-05-12 13:10:24,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 203 transitions, 2049 flow [2024-05-12 13:10:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-05-12 13:10:24,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-05-12 13:10:24,329 INFO L175 Difference]: Start difference. First operand has 224 places, 175 transitions, 1537 flow. Second operand 11 states and 182 transitions. [2024-05-12 13:10:24,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 203 transitions, 2049 flow [2024-05-12 13:10:24,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 203 transitions, 2002 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:10:24,495 INFO L231 Difference]: Finished difference. Result has 226 places, 175 transitions, 1586 flow [2024-05-12 13:10:24,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1586, PETRI_PLACES=226, PETRI_TRANSITIONS=175} [2024-05-12 13:10:24,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-05-12 13:10:24,496 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 175 transitions, 1586 flow [2024-05-12 13:10:24,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:24,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:24,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:24,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 13:10:24,496 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:24,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash 168633232, now seen corresponding path program 10 times [2024-05-12 13:10:24,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:24,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674006968] [2024-05-12 13:10:24,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:24,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:25,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:25,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674006968] [2024-05-12 13:10:25,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674006968] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:25,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:25,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:25,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484398388] [2024-05-12 13:10:25,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:25,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:25,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:25,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:25,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:25,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 175 transitions, 1586 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:25,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:25,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:25,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:26,433 INFO L124 PetriNetUnfolderBase]: 1452/3349 cut-off events. [2024-05-12 13:10:26,434 INFO L125 PetriNetUnfolderBase]: For 72032/72034 co-relation queries the response was YES. [2024-05-12 13:10:26,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13068 conditions, 3349 events. 1452/3349 cut-off events. For 72032/72034 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 26839 event pairs, 642 based on Foata normal form. 12/3170 useless extension candidates. Maximal degree in co-relation 12966. Up to 2381 conditions per place. [2024-05-12 13:10:26,465 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 159 selfloop transitions, 35 changer transitions 0/202 dead transitions. [2024-05-12 13:10:26,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 202 transitions, 2122 flow [2024-05-12 13:10:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:26,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-05-12 13:10:26,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-05-12 13:10:26,468 INFO L175 Difference]: Start difference. First operand has 226 places, 175 transitions, 1586 flow. Second operand 10 states and 169 transitions. [2024-05-12 13:10:26,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 202 transitions, 2122 flow [2024-05-12 13:10:26,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 202 transitions, 2017 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:10:26,664 INFO L231 Difference]: Finished difference. Result has 226 places, 176 transitions, 1585 flow [2024-05-12 13:10:26,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1585, PETRI_PLACES=226, PETRI_TRANSITIONS=176} [2024-05-12 13:10:26,664 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-05-12 13:10:26,664 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 176 transitions, 1585 flow [2024-05-12 13:10:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:26,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:26,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:26,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 13:10:26,665 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:26,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1258204420, now seen corresponding path program 11 times [2024-05-12 13:10:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967661547] [2024-05-12 13:10:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:27,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:27,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967661547] [2024-05-12 13:10:27,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967661547] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:27,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:27,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:27,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068320038] [2024-05-12 13:10:27,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:27,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:27,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:27,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:27,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 176 transitions, 1585 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:27,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:27,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:27,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:28,587 INFO L124 PetriNetUnfolderBase]: 1468/3380 cut-off events. [2024-05-12 13:10:28,587 INFO L125 PetriNetUnfolderBase]: For 56937/56939 co-relation queries the response was YES. [2024-05-12 13:10:28,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13349 conditions, 3380 events. 1468/3380 cut-off events. For 56937/56939 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 27148 event pairs, 627 based on Foata normal form. 4/3186 useless extension candidates. Maximal degree in co-relation 13246. Up to 2540 conditions per place. [2024-05-12 13:10:28,617 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 165 selfloop transitions, 27 changer transitions 0/200 dead transitions. [2024-05-12 13:10:28,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 200 transitions, 2073 flow [2024-05-12 13:10:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 13:10:28,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-05-12 13:10:28,618 INFO L175 Difference]: Start difference. First operand has 226 places, 176 transitions, 1585 flow. Second operand 10 states and 165 transitions. [2024-05-12 13:10:28,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 200 transitions, 2073 flow [2024-05-12 13:10:28,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 200 transitions, 1989 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:28,807 INFO L231 Difference]: Finished difference. Result has 228 places, 177 transitions, 1589 flow [2024-05-12 13:10:28,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1589, PETRI_PLACES=228, PETRI_TRANSITIONS=177} [2024-05-12 13:10:28,807 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-05-12 13:10:28,808 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 177 transitions, 1589 flow [2024-05-12 13:10:28,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:28,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:28,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:28,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 13:10:28,808 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:28,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:28,809 INFO L85 PathProgramCache]: Analyzing trace with hash 425649818, now seen corresponding path program 12 times [2024-05-12 13:10:28,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:28,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404273481] [2024-05-12 13:10:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:28,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:29,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:29,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404273481] [2024-05-12 13:10:29,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404273481] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:29,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:29,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:29,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440730376] [2024-05-12 13:10:29,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:29,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:29,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:29,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:29,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:29,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:29,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 177 transitions, 1589 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:29,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:29,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:29,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:30,556 INFO L124 PetriNetUnfolderBase]: 1484/3416 cut-off events. [2024-05-12 13:10:30,556 INFO L125 PetriNetUnfolderBase]: For 59067/59069 co-relation queries the response was YES. [2024-05-12 13:10:30,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13561 conditions, 3416 events. 1484/3416 cut-off events. For 59067/59069 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 27516 event pairs, 635 based on Foata normal form. 4/3220 useless extension candidates. Maximal degree in co-relation 13457. Up to 2488 conditions per place. [2024-05-12 13:10:30,586 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 146 selfloop transitions, 47 changer transitions 0/201 dead transitions. [2024-05-12 13:10:30,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 201 transitions, 2081 flow [2024-05-12 13:10:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:30,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-05-12 13:10:30,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-05-12 13:10:30,587 INFO L175 Difference]: Start difference. First operand has 228 places, 177 transitions, 1589 flow. Second operand 10 states and 166 transitions. [2024-05-12 13:10:30,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 201 transitions, 2081 flow [2024-05-12 13:10:30,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 201 transitions, 2003 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:30,778 INFO L231 Difference]: Finished difference. Result has 230 places, 178 transitions, 1641 flow [2024-05-12 13:10:30,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1641, PETRI_PLACES=230, PETRI_TRANSITIONS=178} [2024-05-12 13:10:30,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-05-12 13:10:30,779 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 178 transitions, 1641 flow [2024-05-12 13:10:30,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:30,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:30,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:30,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 13:10:30,779 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:30,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:30,780 INFO L85 PathProgramCache]: Analyzing trace with hash 161276002, now seen corresponding path program 13 times [2024-05-12 13:10:30,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:30,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70061215] [2024-05-12 13:10:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:31,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70061215] [2024-05-12 13:10:31,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70061215] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:31,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:31,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:31,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634652379] [2024-05-12 13:10:31,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:31,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:31,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:31,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:31,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:32,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:32,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 178 transitions, 1641 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:32,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:32,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:32,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:32,757 INFO L124 PetriNetUnfolderBase]: 1500/3450 cut-off events. [2024-05-12 13:10:32,757 INFO L125 PetriNetUnfolderBase]: For 61305/61307 co-relation queries the response was YES. [2024-05-12 13:10:32,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13816 conditions, 3450 events. 1500/3450 cut-off events. For 61305/61307 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 27791 event pairs, 635 based on Foata normal form. 4/3254 useless extension candidates. Maximal degree in co-relation 13711. Up to 2530 conditions per place. [2024-05-12 13:10:32,788 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 169 selfloop transitions, 29 changer transitions 0/206 dead transitions. [2024-05-12 13:10:32,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 206 transitions, 2157 flow [2024-05-12 13:10:32,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-05-12 13:10:32,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-05-12 13:10:32,790 INFO L175 Difference]: Start difference. First operand has 230 places, 178 transitions, 1641 flow. Second operand 10 states and 169 transitions. [2024-05-12 13:10:32,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 206 transitions, 2157 flow [2024-05-12 13:10:33,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 206 transitions, 2037 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:33,023 INFO L231 Difference]: Finished difference. Result has 232 places, 179 transitions, 1617 flow [2024-05-12 13:10:33,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1617, PETRI_PLACES=232, PETRI_TRANSITIONS=179} [2024-05-12 13:10:33,024 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-05-12 13:10:33,024 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 179 transitions, 1617 flow [2024-05-12 13:10:33,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:33,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:33,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:33,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 13:10:33,024 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:33,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:33,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1845130240, now seen corresponding path program 14 times [2024-05-12 13:10:33,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:33,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29837845] [2024-05-12 13:10:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:33,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:34,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:34,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29837845] [2024-05-12 13:10:34,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29837845] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:34,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:34,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:34,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195892540] [2024-05-12 13:10:34,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:34,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:34,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:34,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:34,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:34,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:34,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 179 transitions, 1617 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:34,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:34,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:34,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:34,862 INFO L124 PetriNetUnfolderBase]: 1597/3680 cut-off events. [2024-05-12 13:10:34,863 INFO L125 PetriNetUnfolderBase]: For 93188/93190 co-relation queries the response was YES. [2024-05-12 13:10:34,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15609 conditions, 3680 events. 1597/3680 cut-off events. For 93188/93190 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30160 event pairs, 689 based on Foata normal form. 4/3471 useless extension candidates. Maximal degree in co-relation 15503. Up to 2387 conditions per place. [2024-05-12 13:10:34,900 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 127 selfloop transitions, 77 changer transitions 0/212 dead transitions. [2024-05-12 13:10:34,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 212 transitions, 2379 flow [2024-05-12 13:10:34,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-05-12 13:10:34,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-05-12 13:10:34,919 INFO L175 Difference]: Start difference. First operand has 232 places, 179 transitions, 1617 flow. Second operand 10 states and 178 transitions. [2024-05-12 13:10:34,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 212 transitions, 2379 flow [2024-05-12 13:10:35,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 212 transitions, 2293 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-05-12 13:10:35,233 INFO L231 Difference]: Finished difference. Result has 235 places, 181 transitions, 1759 flow [2024-05-12 13:10:35,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1759, PETRI_PLACES=235, PETRI_TRANSITIONS=181} [2024-05-12 13:10:35,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-05-12 13:10:35,240 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 181 transitions, 1759 flow [2024-05-12 13:10:35,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:35,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:35,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:35,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 13:10:35,240 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:35,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash -38025788, now seen corresponding path program 15 times [2024-05-12 13:10:35,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:35,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427843746] [2024-05-12 13:10:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:35,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:36,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:36,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427843746] [2024-05-12 13:10:36,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427843746] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:36,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:36,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:36,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876431657] [2024-05-12 13:10:36,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:36,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:36,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:36,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:36,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:36,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 181 transitions, 1759 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:36,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:36,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:36,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:36,994 INFO L124 PetriNetUnfolderBase]: 1613/3717 cut-off events. [2024-05-12 13:10:36,994 INFO L125 PetriNetUnfolderBase]: For 96596/96598 co-relation queries the response was YES. [2024-05-12 13:10:37,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15942 conditions, 3717 events. 1613/3717 cut-off events. For 96596/96598 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30532 event pairs, 710 based on Foata normal form. 4/3506 useless extension candidates. Maximal degree in co-relation 15835. Up to 2781 conditions per place. [2024-05-12 13:10:37,031 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 181 selfloop transitions, 22 changer transitions 0/211 dead transitions. [2024-05-12 13:10:37,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 211 transitions, 2333 flow [2024-05-12 13:10:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-05-12 13:10:37,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-05-12 13:10:37,034 INFO L175 Difference]: Start difference. First operand has 235 places, 181 transitions, 1759 flow. Second operand 10 states and 166 transitions. [2024-05-12 13:10:37,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 211 transitions, 2333 flow [2024-05-12 13:10:37,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 211 transitions, 2205 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-05-12 13:10:37,422 INFO L231 Difference]: Finished difference. Result has 240 places, 184 transitions, 1767 flow [2024-05-12 13:10:37,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1767, PETRI_PLACES=240, PETRI_TRANSITIONS=184} [2024-05-12 13:10:37,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-05-12 13:10:37,422 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 184 transitions, 1767 flow [2024-05-12 13:10:37,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:37,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:37,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:37,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 13:10:37,434 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:37,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1852487470, now seen corresponding path program 16 times [2024-05-12 13:10:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:37,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067213395] [2024-05-12 13:10:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:38,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:38,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067213395] [2024-05-12 13:10:38,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067213395] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:38,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:38,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014461757] [2024-05-12 13:10:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:38,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:38,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:38,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:38,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 184 transitions, 1767 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:38,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:38,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:38,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:39,305 INFO L124 PetriNetUnfolderBase]: 1681/3888 cut-off events. [2024-05-12 13:10:39,305 INFO L125 PetriNetUnfolderBase]: For 122737/122739 co-relation queries the response was YES. [2024-05-12 13:10:39,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16637 conditions, 3888 events. 1681/3888 cut-off events. For 122737/122739 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32302 event pairs, 755 based on Foata normal form. 12/3671 useless extension candidates. Maximal degree in co-relation 16527. Up to 2645 conditions per place. [2024-05-12 13:10:39,340 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 133 selfloop transitions, 70 changer transitions 0/211 dead transitions. [2024-05-12 13:10:39,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 211 transitions, 2329 flow [2024-05-12 13:10:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:39,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-05-12 13:10:39,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-05-12 13:10:39,342 INFO L175 Difference]: Start difference. First operand has 240 places, 184 transitions, 1767 flow. Second operand 10 states and 174 transitions. [2024-05-12 13:10:39,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 211 transitions, 2329 flow [2024-05-12 13:10:39,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 211 transitions, 2239 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-05-12 13:10:39,715 INFO L231 Difference]: Finished difference. Result has 245 places, 185 transitions, 1859 flow [2024-05-12 13:10:39,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1859, PETRI_PLACES=245, PETRI_TRANSITIONS=185} [2024-05-12 13:10:39,715 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-05-12 13:10:39,715 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 185 transitions, 1859 flow [2024-05-12 13:10:39,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:39,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:39,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:39,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 13:10:39,717 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:39,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash 611770942, now seen corresponding path program 17 times [2024-05-12 13:10:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724008957] [2024-05-12 13:10:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:39,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:40,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724008957] [2024-05-12 13:10:40,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724008957] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:40,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:40,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187855779] [2024-05-12 13:10:40,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:40,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:40,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:40,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:40,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:40,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 185 transitions, 1859 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:40,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:40,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:40,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:41,624 INFO L124 PetriNetUnfolderBase]: 1682/3883 cut-off events. [2024-05-12 13:10:41,625 INFO L125 PetriNetUnfolderBase]: For 94123/94125 co-relation queries the response was YES. [2024-05-12 13:10:41,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16360 conditions, 3883 events. 1682/3883 cut-off events. For 94123/94125 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 32259 event pairs, 736 based on Foata normal form. 4/3658 useless extension candidates. Maximal degree in co-relation 16248. Up to 2913 conditions per place. [2024-05-12 13:10:41,663 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 190 selfloop transitions, 19 changer transitions 0/217 dead transitions. [2024-05-12 13:10:41,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 217 transitions, 2415 flow [2024-05-12 13:10:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:41,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 13:10:41,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-05-12 13:10:41,664 INFO L175 Difference]: Start difference. First operand has 245 places, 185 transitions, 1859 flow. Second operand 10 states and 167 transitions. [2024-05-12 13:10:41,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 217 transitions, 2415 flow [2024-05-12 13:10:41,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 217 transitions, 2255 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:42,002 INFO L231 Difference]: Finished difference. Result has 247 places, 186 transitions, 1781 flow [2024-05-12 13:10:42,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1781, PETRI_PLACES=247, PETRI_TRANSITIONS=186} [2024-05-12 13:10:42,003 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-05-12 13:10:42,003 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 186 transitions, 1781 flow [2024-05-12 13:10:42,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:42,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:42,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:42,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 13:10:42,004 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:42,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2100648848, now seen corresponding path program 18 times [2024-05-12 13:10:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:42,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537615636] [2024-05-12 13:10:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:43,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:43,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537615636] [2024-05-12 13:10:43,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537615636] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:43,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:43,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:10:43,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237662676] [2024-05-12 13:10:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:10:43,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:43,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:10:43,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:10:43,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:43,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 186 transitions, 1781 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:43,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:43,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:43,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:43,992 INFO L124 PetriNetUnfolderBase]: 1669/3874 cut-off events. [2024-05-12 13:10:43,992 INFO L125 PetriNetUnfolderBase]: For 88762/88764 co-relation queries the response was YES. [2024-05-12 13:10:44,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15274 conditions, 3874 events. 1669/3874 cut-off events. For 88762/88764 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 32270 event pairs, 751 based on Foata normal form. 10/3653 useless extension candidates. Maximal degree in co-relation 15161. Up to 2821 conditions per place. [2024-05-12 13:10:44,030 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 177 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2024-05-12 13:10:44,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 210 transitions, 2295 flow [2024-05-12 13:10:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:10:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:10:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 13:10:44,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-05-12 13:10:44,041 INFO L175 Difference]: Start difference. First operand has 247 places, 186 transitions, 1781 flow. Second operand 10 states and 165 transitions. [2024-05-12 13:10:44,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 210 transitions, 2295 flow [2024-05-12 13:10:44,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 210 transitions, 2201 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-05-12 13:10:44,354 INFO L231 Difference]: Finished difference. Result has 249 places, 186 transitions, 1745 flow [2024-05-12 13:10:44,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1745, PETRI_PLACES=249, PETRI_TRANSITIONS=186} [2024-05-12 13:10:44,354 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-05-12 13:10:44,354 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 186 transitions, 1745 flow [2024-05-12 13:10:44,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:44,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:44,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:44,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 13:10:44,355 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:44,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:44,355 INFO L85 PathProgramCache]: Analyzing trace with hash 168641168, now seen corresponding path program 6 times [2024-05-12 13:10:44,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:44,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807276682] [2024-05-12 13:10:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:44,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:45,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807276682] [2024-05-12 13:10:45,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807276682] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:45,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:45,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:45,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445917485] [2024-05-12 13:10:45,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:45,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:45,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:45,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:45,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:45,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:45,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 186 transitions, 1745 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:45,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:45,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:45,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:46,836 INFO L124 PetriNetUnfolderBase]: 1721/4009 cut-off events. [2024-05-12 13:10:46,837 INFO L125 PetriNetUnfolderBase]: For 82140/82144 co-relation queries the response was YES. [2024-05-12 13:10:46,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15457 conditions, 4009 events. 1721/4009 cut-off events. For 82140/82144 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 33753 event pairs, 786 based on Foata normal form. 8/3777 useless extension candidates. Maximal degree in co-relation 15343. Up to 2740 conditions per place. [2024-05-12 13:10:46,871 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 161 selfloop transitions, 43 changer transitions 0/212 dead transitions. [2024-05-12 13:10:46,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 212 transitions, 2269 flow [2024-05-12 13:10:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 13:10:46,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-05-12 13:10:46,872 INFO L175 Difference]: Start difference. First operand has 249 places, 186 transitions, 1745 flow. Second operand 11 states and 184 transitions. [2024-05-12 13:10:46,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 212 transitions, 2269 flow [2024-05-12 13:10:47,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 212 transitions, 2207 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-05-12 13:10:47,196 INFO L231 Difference]: Finished difference. Result has 251 places, 186 transitions, 1777 flow [2024-05-12 13:10:47,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1777, PETRI_PLACES=251, PETRI_TRANSITIONS=186} [2024-05-12 13:10:47,196 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-05-12 13:10:47,197 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 186 transitions, 1777 flow [2024-05-12 13:10:47,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:47,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:47,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:47,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 13:10:47,197 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:47,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:47,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1845345566, now seen corresponding path program 7 times [2024-05-12 13:10:47,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:47,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924917850] [2024-05-12 13:10:47,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:47,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:48,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924917850] [2024-05-12 13:10:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924917850] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:48,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:48,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438987448] [2024-05-12 13:10:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:48,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:48,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:48,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 186 transitions, 1777 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:48,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:48,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:48,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:49,941 INFO L124 PetriNetUnfolderBase]: 1773/4150 cut-off events. [2024-05-12 13:10:49,941 INFO L125 PetriNetUnfolderBase]: For 86154/86158 co-relation queries the response was YES. [2024-05-12 13:10:49,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16003 conditions, 4150 events. 1773/4150 cut-off events. For 86154/86158 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 35318 event pairs, 825 based on Foata normal form. 8/3907 useless extension candidates. Maximal degree in co-relation 15888. Up to 2773 conditions per place. [2024-05-12 13:10:49,981 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 117 selfloop transitions, 87 changer transitions 0/212 dead transitions. [2024-05-12 13:10:49,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 212 transitions, 2301 flow [2024-05-12 13:10:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-05-12 13:10:49,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-05-12 13:10:49,982 INFO L175 Difference]: Start difference. First operand has 251 places, 186 transitions, 1777 flow. Second operand 11 states and 188 transitions. [2024-05-12 13:10:49,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 212 transitions, 2301 flow [2024-05-12 13:10:50,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 212 transitions, 2215 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:10:50,296 INFO L231 Difference]: Finished difference. Result has 252 places, 186 transitions, 1871 flow [2024-05-12 13:10:50,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1871, PETRI_PLACES=252, PETRI_TRANSITIONS=186} [2024-05-12 13:10:50,297 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-05-12 13:10:50,297 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 186 transitions, 1871 flow [2024-05-12 13:10:50,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:50,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:50,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:50,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 13:10:50,297 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:50,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:50,298 INFO L85 PathProgramCache]: Analyzing trace with hash 168909938, now seen corresponding path program 8 times [2024-05-12 13:10:50,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:50,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595542272] [2024-05-12 13:10:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:50,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:51,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:51,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595542272] [2024-05-12 13:10:51,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595542272] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:51,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:51,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746918292] [2024-05-12 13:10:51,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:51,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:51,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:51,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:51,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 186 transitions, 1871 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:51,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:51,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:51,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:52,409 INFO L124 PetriNetUnfolderBase]: 1907/4476 cut-off events. [2024-05-12 13:10:52,410 INFO L125 PetriNetUnfolderBase]: For 107537/107541 co-relation queries the response was YES. [2024-05-12 13:10:52,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17980 conditions, 4476 events. 1907/4476 cut-off events. For 107537/107541 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 38694 event pairs, 881 based on Foata normal form. 6/4219 useless extension candidates. Maximal degree in co-relation 17864. Up to 2788 conditions per place. [2024-05-12 13:10:52,452 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 167 selfloop transitions, 44 changer transitions 0/219 dead transitions. [2024-05-12 13:10:52,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 219 transitions, 2623 flow [2024-05-12 13:10:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-05-12 13:10:52,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-05-12 13:10:52,454 INFO L175 Difference]: Start difference. First operand has 252 places, 186 transitions, 1871 flow. Second operand 11 states and 188 transitions. [2024-05-12 13:10:52,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 219 transitions, 2623 flow [2024-05-12 13:10:52,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 219 transitions, 2449 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:10:52,805 INFO L231 Difference]: Finished difference. Result has 253 places, 186 transitions, 1788 flow [2024-05-12 13:10:52,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1788, PETRI_PLACES=253, PETRI_TRANSITIONS=186} [2024-05-12 13:10:52,805 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-05-12 13:10:52,805 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 186 transitions, 1788 flow [2024-05-12 13:10:52,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:52,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:52,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:52,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 13:10:52,806 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:52,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash 411576642, now seen corresponding path program 9 times [2024-05-12 13:10:52,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961838756] [2024-05-12 13:10:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:54,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:54,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961838756] [2024-05-12 13:10:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961838756] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:54,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:54,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:54,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34666928] [2024-05-12 13:10:54,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:54,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:54,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:54,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:54,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:54,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:54,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 186 transitions, 1788 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:54,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:54,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:54,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:55,384 INFO L124 PetriNetUnfolderBase]: 1959/4636 cut-off events. [2024-05-12 13:10:55,385 INFO L125 PetriNetUnfolderBase]: For 120231/120233 co-relation queries the response was YES. [2024-05-12 13:10:55,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18392 conditions, 4636 events. 1959/4636 cut-off events. For 120231/120233 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40670 event pairs, 951 based on Foata normal form. 8/4363 useless extension candidates. Maximal degree in co-relation 18275. Up to 3277 conditions per place. [2024-05-12 13:10:55,430 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 179 selfloop transitions, 25 changer transitions 0/212 dead transitions. [2024-05-12 13:10:55,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 212 transitions, 2312 flow [2024-05-12 13:10:55,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:55,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-05-12 13:10:55,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-05-12 13:10:55,444 INFO L175 Difference]: Start difference. First operand has 253 places, 186 transitions, 1788 flow. Second operand 11 states and 178 transitions. [2024-05-12 13:10:55,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 212 transitions, 2312 flow [2024-05-12 13:10:55,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 212 transitions, 2244 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 13:10:55,978 INFO L231 Difference]: Finished difference. Result has 257 places, 186 transitions, 1780 flow [2024-05-12 13:10:55,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1780, PETRI_PLACES=257, PETRI_TRANSITIONS=186} [2024-05-12 13:10:55,978 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-05-12 13:10:55,978 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 186 transitions, 1780 flow [2024-05-12 13:10:55,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:55,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:55,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:55,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 13:10:55,979 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:55,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1258196484, now seen corresponding path program 10 times [2024-05-12 13:10:55,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:55,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939842371] [2024-05-12 13:10:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:55,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:57,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:57,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939842371] [2024-05-12 13:10:57,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939842371] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:57,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:57,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:57,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600562523] [2024-05-12 13:10:57,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:57,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:10:57,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:10:57,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 186 transitions, 1780 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:57,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:57,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:10:57,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:58,402 INFO L124 PetriNetUnfolderBase]: 1949/4620 cut-off events. [2024-05-12 13:10:58,403 INFO L125 PetriNetUnfolderBase]: For 94116/94118 co-relation queries the response was YES. [2024-05-12 13:10:58,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17661 conditions, 4620 events. 1949/4620 cut-off events. For 94116/94118 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 40575 event pairs, 943 based on Foata normal form. 10/4347 useless extension candidates. Maximal degree in co-relation 17543. Up to 3324 conditions per place. [2024-05-12 13:10:58,449 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 171 selfloop transitions, 35 changer transitions 0/214 dead transitions. [2024-05-12 13:10:58,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 214 transitions, 2320 flow [2024-05-12 13:10:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:10:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:10:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-05-12 13:10:58,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-05-12 13:10:58,451 INFO L175 Difference]: Start difference. First operand has 257 places, 186 transitions, 1780 flow. Second operand 11 states and 184 transitions. [2024-05-12 13:10:58,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 214 transitions, 2320 flow [2024-05-12 13:10:58,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 214 transitions, 2262 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-05-12 13:10:58,777 INFO L231 Difference]: Finished difference. Result has 257 places, 186 transitions, 1798 flow [2024-05-12 13:10:58,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1798, PETRI_PLACES=257, PETRI_TRANSITIONS=186} [2024-05-12 13:10:58,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-05-12 13:10:58,778 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 186 transitions, 1798 flow [2024-05-12 13:10:58,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:58,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:58,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:58,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 13:10:58,779 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:10:58,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:58,779 INFO L85 PathProgramCache]: Analyzing trace with hash 433076364, now seen corresponding path program 11 times [2024-05-12 13:10:58,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:58,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625263265] [2024-05-12 13:10:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:58,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625263265] [2024-05-12 13:10:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625263265] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:59,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:10:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463006416] [2024-05-12 13:10:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:59,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:10:59,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:10:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:00,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:00,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 186 transitions, 1798 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:00,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:00,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:00,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:01,109 INFO L124 PetriNetUnfolderBase]: 2047/4854 cut-off events. [2024-05-12 13:11:01,109 INFO L125 PetriNetUnfolderBase]: For 118137/118141 co-relation queries the response was YES. [2024-05-12 13:11:01,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19305 conditions, 4854 events. 2047/4854 cut-off events. For 118137/118141 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 43240 event pairs, 995 based on Foata normal form. 6/4572 useless extension candidates. Maximal degree in co-relation 19187. Up to 3016 conditions per place. [2024-05-12 13:11:01,149 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 147 selfloop transitions, 64 changer transitions 0/219 dead transitions. [2024-05-12 13:11:01,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 219 transitions, 2554 flow [2024-05-12 13:11:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-05-12 13:11:01,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-05-12 13:11:01,150 INFO L175 Difference]: Start difference. First operand has 257 places, 186 transitions, 1798 flow. Second operand 11 states and 192 transitions. [2024-05-12 13:11:01,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 219 transitions, 2554 flow [2024-05-12 13:11:01,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 219 transitions, 2484 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:11:01,539 INFO L231 Difference]: Finished difference. Result has 258 places, 186 transitions, 1859 flow [2024-05-12 13:11:01,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1859, PETRI_PLACES=258, PETRI_TRANSITIONS=186} [2024-05-12 13:11:01,540 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 217 predicate places. [2024-05-12 13:11:01,540 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 186 transitions, 1859 flow [2024-05-12 13:11:01,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:01,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:01,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:01,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 13:11:01,540 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:01,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:01,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1852495406, now seen corresponding path program 12 times [2024-05-12 13:11:01,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:01,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576639083] [2024-05-12 13:11:01,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:01,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:02,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576639083] [2024-05-12 13:11:02,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576639083] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:02,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:02,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861338758] [2024-05-12 13:11:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:02,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:02,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:02,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:02,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:02,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:02,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 186 transitions, 1859 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:02,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:02,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:02,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:03,883 INFO L124 PetriNetUnfolderBase]: 2080/4966 cut-off events. [2024-05-12 13:11:03,883 INFO L125 PetriNetUnfolderBase]: For 120399/120403 co-relation queries the response was YES. [2024-05-12 13:11:03,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19453 conditions, 4966 events. 2080/4966 cut-off events. For 120399/120403 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 44538 event pairs, 1057 based on Foata normal form. 8/4670 useless extension candidates. Maximal degree in co-relation 19334. Up to 3256 conditions per place. [2024-05-12 13:11:03,933 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 122 selfloop transitions, 80 changer transitions 0/210 dead transitions. [2024-05-12 13:11:03,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 210 transitions, 2373 flow [2024-05-12 13:11:03,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:11:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:11:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-05-12 13:11:03,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-05-12 13:11:03,934 INFO L175 Difference]: Start difference. First operand has 258 places, 186 transitions, 1859 flow. Second operand 10 states and 175 transitions. [2024-05-12 13:11:03,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 210 transitions, 2373 flow [2024-05-12 13:11:04,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 210 transitions, 2254 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 13:11:04,403 INFO L231 Difference]: Finished difference. Result has 260 places, 186 transitions, 1907 flow [2024-05-12 13:11:04,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1740, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1907, PETRI_PLACES=260, PETRI_TRANSITIONS=186} [2024-05-12 13:11:04,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-05-12 13:11:04,404 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 186 transitions, 1907 flow [2024-05-12 13:11:04,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:04,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:04,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:04,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 13:11:04,405 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:04,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2100925554, now seen corresponding path program 13 times [2024-05-12 13:11:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:04,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619372285] [2024-05-12 13:11:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:04,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:05,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619372285] [2024-05-12 13:11:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619372285] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:05,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:05,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:05,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671800287] [2024-05-12 13:11:05,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:05,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:05,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:05,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:05,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 186 transitions, 1907 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:05,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:05,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:05,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:06,789 INFO L124 PetriNetUnfolderBase]: 2125/5074 cut-off events. [2024-05-12 13:11:06,789 INFO L125 PetriNetUnfolderBase]: For 96387/96389 co-relation queries the response was YES. [2024-05-12 13:11:06,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19604 conditions, 5074 events. 2125/5074 cut-off events. For 96387/96389 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 45871 event pairs, 1039 based on Foata normal form. 6/4773 useless extension candidates. Maximal degree in co-relation 19484. Up to 3540 conditions per place. [2024-05-12 13:11:06,842 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 191 selfloop transitions, 19 changer transitions 0/218 dead transitions. [2024-05-12 13:11:06,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 218 transitions, 2491 flow [2024-05-12 13:11:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-05-12 13:11:06,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-05-12 13:11:06,843 INFO L175 Difference]: Start difference. First operand has 260 places, 186 transitions, 1907 flow. Second operand 11 states and 181 transitions. [2024-05-12 13:11:06,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 218 transitions, 2491 flow [2024-05-12 13:11:07,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 218 transitions, 2330 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:07,321 INFO L231 Difference]: Finished difference. Result has 262 places, 186 transitions, 1787 flow [2024-05-12 13:11:07,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1787, PETRI_PLACES=262, PETRI_TRANSITIONS=186} [2024-05-12 13:11:07,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-05-12 13:11:07,321 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 186 transitions, 1787 flow [2024-05-12 13:11:07,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:07,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:07,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:07,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 13:11:07,322 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:07,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1869300622, now seen corresponding path program 14 times [2024-05-12 13:11:07,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:07,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536630179] [2024-05-12 13:11:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:07,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:08,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:08,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536630179] [2024-05-12 13:11:08,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536630179] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:08,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:08,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:11:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524659916] [2024-05-12 13:11:08,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:08,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:11:08,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:11:08,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:11:08,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:08,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 186 transitions, 1787 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:08,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:08,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:08,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:09,566 INFO L124 PetriNetUnfolderBase]: 2204/5279 cut-off events. [2024-05-12 13:11:09,566 INFO L125 PetriNetUnfolderBase]: For 119283/119285 co-relation queries the response was YES. [2024-05-12 13:11:09,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20590 conditions, 5279 events. 2204/5279 cut-off events. For 119283/119285 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 48297 event pairs, 1106 based on Foata normal form. 6/4982 useless extension candidates. Maximal degree in co-relation 20470. Up to 3265 conditions per place. [2024-05-12 13:11:09,622 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 193 selfloop transitions, 22 changer transitions 0/223 dead transitions. [2024-05-12 13:11:09,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 223 transitions, 2567 flow [2024-05-12 13:11:09,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:09,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-05-12 13:11:09,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:11:09,624 INFO L175 Difference]: Start difference. First operand has 262 places, 186 transitions, 1787 flow. Second operand 11 states and 187 transitions. [2024-05-12 13:11:09,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 223 transitions, 2567 flow [2024-05-12 13:11:10,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 223 transitions, 2530 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:10,125 INFO L231 Difference]: Finished difference. Result has 264 places, 186 transitions, 1797 flow [2024-05-12 13:11:10,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1797, PETRI_PLACES=264, PETRI_TRANSITIONS=186} [2024-05-12 13:11:10,125 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-05-12 13:11:10,125 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 186 transitions, 1797 flow [2024-05-12 13:11:10,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:10,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:10,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:10,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 13:11:10,126 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:10,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:10,126 INFO L85 PathProgramCache]: Analyzing trace with hash 994936972, now seen corresponding path program 15 times [2024-05-12 13:11:10,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:10,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59084892] [2024-05-12 13:11:10,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:10,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:11,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:11,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59084892] [2024-05-12 13:11:11,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59084892] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:11,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:11,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:11:11,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839167801] [2024-05-12 13:11:11,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:11,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:11:11,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:11:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:11:11,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:11,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 186 transitions, 1797 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:11,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:11,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:11,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:12,365 INFO L124 PetriNetUnfolderBase]: 2169/5188 cut-off events. [2024-05-12 13:11:12,366 INFO L125 PetriNetUnfolderBase]: For 111865/111867 co-relation queries the response was YES. [2024-05-12 13:11:12,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20025 conditions, 5188 events. 2169/5188 cut-off events. For 111865/111867 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 47233 event pairs, 1075 based on Foata normal form. 6/4889 useless extension candidates. Maximal degree in co-relation 19904. Up to 3396 conditions per place. [2024-05-12 13:11:12,423 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 187 selfloop transitions, 22 changer transitions 0/217 dead transitions. [2024-05-12 13:11:12,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 217 transitions, 2549 flow [2024-05-12 13:11:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:11:12,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:11:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-05-12 13:11:12,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:11:12,424 INFO L175 Difference]: Start difference. First operand has 264 places, 186 transitions, 1797 flow. Second operand 10 states and 170 transitions. [2024-05-12 13:11:12,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 217 transitions, 2549 flow [2024-05-12 13:11:12,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 217 transitions, 2506 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:12,927 INFO L231 Difference]: Finished difference. Result has 265 places, 186 transitions, 1802 flow [2024-05-12 13:11:12,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1802, PETRI_PLACES=265, PETRI_TRANSITIONS=186} [2024-05-12 13:11:12,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-05-12 13:11:12,928 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 186 transitions, 1802 flow [2024-05-12 13:11:12,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:12,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:12,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:12,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 13:11:12,929 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:12,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:12,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1244023841, now seen corresponding path program 1 times [2024-05-12 13:11:12,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:12,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843354726] [2024-05-12 13:11:12,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:12,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:14,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843354726] [2024-05-12 13:11:14,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843354726] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:14,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:14,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:14,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915013003] [2024-05-12 13:11:14,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:14,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:14,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:14,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:14,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:14,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:14,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 186 transitions, 1802 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:14,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:14,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:14,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:15,185 INFO L124 PetriNetUnfolderBase]: 2205/5261 cut-off events. [2024-05-12 13:11:15,185 INFO L125 PetriNetUnfolderBase]: For 115492/115492 co-relation queries the response was YES. [2024-05-12 13:11:15,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20261 conditions, 5261 events. 2205/5261 cut-off events. For 115492/115492 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 47892 event pairs, 1092 based on Foata normal form. 6/4953 useless extension candidates. Maximal degree in co-relation 20139. Up to 3831 conditions per place. [2024-05-12 13:11:15,248 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 204 selfloop transitions, 19 changer transitions 0/231 dead transitions. [2024-05-12 13:11:15,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 231 transitions, 2396 flow [2024-05-12 13:11:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-05-12 13:11:15,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-05-12 13:11:15,249 INFO L175 Difference]: Start difference. First operand has 265 places, 186 transitions, 1802 flow. Second operand 11 states and 190 transitions. [2024-05-12 13:11:15,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 231 transitions, 2396 flow [2024-05-12 13:11:15,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 231 transitions, 2351 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:15,863 INFO L231 Difference]: Finished difference. Result has 267 places, 186 transitions, 1798 flow [2024-05-12 13:11:15,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1798, PETRI_PLACES=267, PETRI_TRANSITIONS=186} [2024-05-12 13:11:15,863 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-05-12 13:11:15,863 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 186 transitions, 1798 flow [2024-05-12 13:11:15,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:15,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:15,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:15,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 13:11:15,864 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:15,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:15,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1616569831, now seen corresponding path program 2 times [2024-05-12 13:11:15,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:15,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290145239] [2024-05-12 13:11:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:16,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:16,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290145239] [2024-05-12 13:11:17,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290145239] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:17,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:17,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:11:17,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590670461] [2024-05-12 13:11:17,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:11:17,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:11:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:11:17,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:17,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 186 transitions, 1798 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:17,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:17,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:17,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:18,111 INFO L124 PetriNetUnfolderBase]: 2198/5254 cut-off events. [2024-05-12 13:11:18,112 INFO L125 PetriNetUnfolderBase]: For 92831/92831 co-relation queries the response was YES. [2024-05-12 13:11:18,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19742 conditions, 5254 events. 2198/5254 cut-off events. For 92831/92831 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 48015 event pairs, 1107 based on Foata normal form. 6/4945 useless extension candidates. Maximal degree in co-relation 19620. Up to 3864 conditions per place. [2024-05-12 13:11:18,162 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 199 selfloop transitions, 14 changer transitions 0/221 dead transitions. [2024-05-12 13:11:18,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 221 transitions, 2342 flow [2024-05-12 13:11:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:11:18,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:11:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-05-12 13:11:18,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-05-12 13:11:18,164 INFO L175 Difference]: Start difference. First operand has 267 places, 186 transitions, 1798 flow. Second operand 10 states and 169 transitions. [2024-05-12 13:11:18,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 221 transitions, 2342 flow [2024-05-12 13:11:18,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 221 transitions, 2305 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:18,611 INFO L231 Difference]: Finished difference. Result has 268 places, 186 transitions, 1792 flow [2024-05-12 13:11:18,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1792, PETRI_PLACES=268, PETRI_TRANSITIONS=186} [2024-05-12 13:11:18,611 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-05-12 13:11:18,611 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 186 transitions, 1792 flow [2024-05-12 13:11:18,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:18,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:18,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:18,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 13:11:18,612 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:18,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash -209557019, now seen corresponding path program 3 times [2024-05-12 13:11:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:18,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641661895] [2024-05-12 13:11:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:18,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:19,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:19,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641661895] [2024-05-12 13:11:19,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641661895] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:19,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:19,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:19,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372178067] [2024-05-12 13:11:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:19,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:20,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:20,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 186 transitions, 1792 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:20,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:20,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:20,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:21,044 INFO L124 PetriNetUnfolderBase]: 2234/5378 cut-off events. [2024-05-12 13:11:21,044 INFO L125 PetriNetUnfolderBase]: For 93943/93943 co-relation queries the response was YES. [2024-05-12 13:11:21,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19990 conditions, 5378 events. 2234/5378 cut-off events. For 93943/93943 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 49583 event pairs, 1171 based on Foata normal form. 6/5055 useless extension candidates. Maximal degree in co-relation 19867. Up to 3932 conditions per place. [2024-05-12 13:11:21,101 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 179 selfloop transitions, 32 changer transitions 0/219 dead transitions. [2024-05-12 13:11:21,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 219 transitions, 2326 flow [2024-05-12 13:11:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-05-12 13:11:21,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-05-12 13:11:21,102 INFO L175 Difference]: Start difference. First operand has 268 places, 186 transitions, 1792 flow. Second operand 11 states and 185 transitions. [2024-05-12 13:11:21,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 219 transitions, 2326 flow [2024-05-12 13:11:21,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 219 transitions, 2299 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 13:11:21,634 INFO L231 Difference]: Finished difference. Result has 271 places, 186 transitions, 1832 flow [2024-05-12 13:11:21,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1832, PETRI_PLACES=271, PETRI_TRANSITIONS=186} [2024-05-12 13:11:21,635 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-05-12 13:11:21,635 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 186 transitions, 1832 flow [2024-05-12 13:11:21,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:21,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:21,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:21,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 13:11:21,636 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:21,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash 271287013, now seen corresponding path program 4 times [2024-05-12 13:11:21,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:21,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606625841] [2024-05-12 13:11:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606625841] [2024-05-12 13:11:22,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606625841] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:22,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:22,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:22,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734653164] [2024-05-12 13:11:22,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:22,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:22,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:22,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:22,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:23,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:23,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 186 transitions, 1832 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:23,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:23,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:23,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:24,096 INFO L124 PetriNetUnfolderBase]: 2270/5454 cut-off events. [2024-05-12 13:11:24,096 INFO L125 PetriNetUnfolderBase]: For 95029/95029 co-relation queries the response was YES. [2024-05-12 13:11:24,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20268 conditions, 5454 events. 2270/5454 cut-off events. For 95029/95029 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 50400 event pairs, 1182 based on Foata normal form. 6/5133 useless extension candidates. Maximal degree in co-relation 20144. Up to 3963 conditions per place. [2024-05-12 13:11:24,152 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 190 selfloop transitions, 25 changer transitions 0/223 dead transitions. [2024-05-12 13:11:24,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 223 transitions, 2386 flow [2024-05-12 13:11:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-05-12 13:11:24,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-05-12 13:11:24,153 INFO L175 Difference]: Start difference. First operand has 271 places, 186 transitions, 1832 flow. Second operand 11 states and 187 transitions. [2024-05-12 13:11:24,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 223 transitions, 2386 flow [2024-05-12 13:11:24,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 223 transitions, 2323 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:24,682 INFO L231 Difference]: Finished difference. Result has 273 places, 186 transitions, 1822 flow [2024-05-12 13:11:24,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1822, PETRI_PLACES=273, PETRI_TRANSITIONS=186} [2024-05-12 13:11:24,683 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-05-12 13:11:24,683 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 186 transitions, 1822 flow [2024-05-12 13:11:24,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:24,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:24,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:24,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 13:11:24,684 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:24,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:24,684 INFO L85 PathProgramCache]: Analyzing trace with hash 932663987, now seen corresponding path program 5 times [2024-05-12 13:11:24,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:24,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808796432] [2024-05-12 13:11:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:24,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:26,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:26,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808796432] [2024-05-12 13:11:26,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808796432] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:26,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:26,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:26,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064722759] [2024-05-12 13:11:26,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:26,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:26,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:26,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:26,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:26,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 186 transitions, 1822 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:26,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:26,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:26,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:27,285 INFO L124 PetriNetUnfolderBase]: 2306/5571 cut-off events. [2024-05-12 13:11:27,285 INFO L125 PetriNetUnfolderBase]: For 96114/96116 co-relation queries the response was YES. [2024-05-12 13:11:27,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20551 conditions, 5571 events. 2306/5571 cut-off events. For 96114/96116 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 51877 event pairs, 1246 based on Foata normal form. 8/5238 useless extension candidates. Maximal degree in co-relation 20426. Up to 4086 conditions per place. [2024-05-12 13:11:27,335 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 180 selfloop transitions, 29 changer transitions 0/217 dead transitions. [2024-05-12 13:11:27,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 217 transitions, 2346 flow [2024-05-12 13:11:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-05-12 13:11:27,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-05-12 13:11:27,337 INFO L175 Difference]: Start difference. First operand has 273 places, 186 transitions, 1822 flow. Second operand 11 states and 182 transitions. [2024-05-12 13:11:27,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 217 transitions, 2346 flow [2024-05-12 13:11:27,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 217 transitions, 2297 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:27,821 INFO L231 Difference]: Finished difference. Result has 275 places, 186 transitions, 1834 flow [2024-05-12 13:11:27,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1834, PETRI_PLACES=275, PETRI_TRANSITIONS=186} [2024-05-12 13:11:27,822 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-05-12 13:11:27,822 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 186 transitions, 1834 flow [2024-05-12 13:11:27,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:27,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:27,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:27,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 13:11:27,822 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:27,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash -349630265, now seen corresponding path program 6 times [2024-05-12 13:11:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:27,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812336576] [2024-05-12 13:11:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:29,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:29,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812336576] [2024-05-12 13:11:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812336576] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:29,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:29,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471477734] [2024-05-12 13:11:29,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:29,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:29,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:29,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 186 transitions, 1834 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:29,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:29,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:29,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:30,595 INFO L124 PetriNetUnfolderBase]: 2342/5667 cut-off events. [2024-05-12 13:11:30,595 INFO L125 PetriNetUnfolderBase]: For 97456/97458 co-relation queries the response was YES. [2024-05-12 13:11:30,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20783 conditions, 5667 events. 2342/5667 cut-off events. For 97456/97458 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 52975 event pairs, 1282 based on Foata normal form. 8/5328 useless extension candidates. Maximal degree in co-relation 20657. Up to 4158 conditions per place. [2024-05-12 13:11:30,655 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 181 selfloop transitions, 28 changer transitions 0/217 dead transitions. [2024-05-12 13:11:30,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 217 transitions, 2358 flow [2024-05-12 13:11:30,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-05-12 13:11:30,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-05-12 13:11:30,656 INFO L175 Difference]: Start difference. First operand has 275 places, 186 transitions, 1834 flow. Second operand 11 states and 183 transitions. [2024-05-12 13:11:30,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 217 transitions, 2358 flow [2024-05-12 13:11:31,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 217 transitions, 2293 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 13:11:31,178 INFO L231 Difference]: Finished difference. Result has 276 places, 186 transitions, 1828 flow [2024-05-12 13:11:31,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1828, PETRI_PLACES=276, PETRI_TRANSITIONS=186} [2024-05-12 13:11:31,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-05-12 13:11:31,178 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 186 transitions, 1828 flow [2024-05-12 13:11:31,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:31,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:31,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:31,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 13:11:31,179 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:31,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash 704589857, now seen corresponding path program 7 times [2024-05-12 13:11:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:31,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709974525] [2024-05-12 13:11:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:32,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:32,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709974525] [2024-05-12 13:11:32,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709974525] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:32,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:32,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:32,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415225216] [2024-05-12 13:11:32,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:32,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:32,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:32,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:32,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:32,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:32,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 186 transitions, 1828 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:32,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:32,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:32,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:33,968 INFO L124 PetriNetUnfolderBase]: 2378/5742 cut-off events. [2024-05-12 13:11:33,968 INFO L125 PetriNetUnfolderBase]: For 98830/98834 co-relation queries the response was YES. [2024-05-12 13:11:34,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20997 conditions, 5742 events. 2378/5742 cut-off events. For 98830/98834 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 53844 event pairs, 1289 based on Foata normal form. 6/5402 useless extension candidates. Maximal degree in co-relation 20870. Up to 4130 conditions per place. [2024-05-12 13:11:34,033 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 173 selfloop transitions, 38 changer transitions 0/219 dead transitions. [2024-05-12 13:11:34,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 219 transitions, 2356 flow [2024-05-12 13:11:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-05-12 13:11:34,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-05-12 13:11:34,034 INFO L175 Difference]: Start difference. First operand has 276 places, 186 transitions, 1828 flow. Second operand 11 states and 188 transitions. [2024-05-12 13:11:34,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 219 transitions, 2356 flow [2024-05-12 13:11:34,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 219 transitions, 2301 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:34,633 INFO L231 Difference]: Finished difference. Result has 278 places, 186 transitions, 1852 flow [2024-05-12 13:11:34,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1852, PETRI_PLACES=278, PETRI_TRANSITIONS=186} [2024-05-12 13:11:34,636 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-05-12 13:11:34,636 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 186 transitions, 1852 flow [2024-05-12 13:11:34,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:34,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:34,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:34,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 13:11:34,636 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:34,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1012564557, now seen corresponding path program 8 times [2024-05-12 13:11:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160359870] [2024-05-12 13:11:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:35,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160359870] [2024-05-12 13:11:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160359870] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:35,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:35,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:11:35,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122464935] [2024-05-12 13:11:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:35,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:11:35,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:35,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:11:35,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:11:35,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:35,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 186 transitions, 1852 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:35,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:35,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:35,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:36,885 INFO L124 PetriNetUnfolderBase]: 2414/5857 cut-off events. [2024-05-12 13:11:36,885 INFO L125 PetriNetUnfolderBase]: For 100187/100189 co-relation queries the response was YES. [2024-05-12 13:11:36,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21327 conditions, 5857 events. 2414/5857 cut-off events. For 100187/100189 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55263 event pairs, 1344 based on Foata normal form. 8/5509 useless extension candidates. Maximal degree in co-relation 21199. Up to 4085 conditions per place. [2024-05-12 13:11:36,948 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 190 selfloop transitions, 21 changer transitions 0/219 dead transitions. [2024-05-12 13:11:36,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 219 transitions, 2432 flow [2024-05-12 13:11:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:11:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:11:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 13:11:36,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-05-12 13:11:36,949 INFO L175 Difference]: Start difference. First operand has 278 places, 186 transitions, 1852 flow. Second operand 10 states and 172 transitions. [2024-05-12 13:11:36,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 219 transitions, 2432 flow [2024-05-12 13:11:37,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 219 transitions, 2357 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:37,680 INFO L231 Difference]: Finished difference. Result has 280 places, 187 transitions, 1841 flow [2024-05-12 13:11:37,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1841, PETRI_PLACES=280, PETRI_TRANSITIONS=187} [2024-05-12 13:11:37,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-05-12 13:11:37,681 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 187 transitions, 1841 flow [2024-05-12 13:11:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:37,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:37,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:37,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 13:11:37,682 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:37,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1183266987, now seen corresponding path program 9 times [2024-05-12 13:11:37,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:37,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765243733] [2024-05-12 13:11:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:37,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:39,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:39,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765243733] [2024-05-12 13:11:39,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765243733] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:39,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:39,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:39,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159769353] [2024-05-12 13:11:39,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:39,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:39,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:39,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:39,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:39,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:39,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 187 transitions, 1841 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:39,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:39,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:39,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:40,641 INFO L124 PetriNetUnfolderBase]: 2450/5921 cut-off events. [2024-05-12 13:11:40,641 INFO L125 PetriNetUnfolderBase]: For 101085/101087 co-relation queries the response was YES. [2024-05-12 13:11:40,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21485 conditions, 5921 events. 2450/5921 cut-off events. For 101085/101087 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55859 event pairs, 1362 based on Foata normal form. 8/5574 useless extension candidates. Maximal degree in co-relation 21355. Up to 4353 conditions per place. [2024-05-12 13:11:40,713 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 199 selfloop transitions, 19 changer transitions 0/226 dead transitions. [2024-05-12 13:11:40,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 226 transitions, 2407 flow [2024-05-12 13:11:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-05-12 13:11:40,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-05-12 13:11:40,715 INFO L175 Difference]: Start difference. First operand has 280 places, 187 transitions, 1841 flow. Second operand 11 states and 185 transitions. [2024-05-12 13:11:40,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 226 transitions, 2407 flow [2024-05-12 13:11:41,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 226 transitions, 2367 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 13:11:41,379 INFO L231 Difference]: Finished difference. Result has 283 places, 187 transitions, 1842 flow [2024-05-12 13:11:41,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1842, PETRI_PLACES=283, PETRI_TRANSITIONS=187} [2024-05-12 13:11:41,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-05-12 13:11:41,380 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 187 transitions, 1842 flow [2024-05-12 13:11:41,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:41,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:41,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:41,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-05-12 13:11:41,381 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:41,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:41,381 INFO L85 PathProgramCache]: Analyzing trace with hash 512147871, now seen corresponding path program 10 times [2024-05-12 13:11:41,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:41,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20942135] [2024-05-12 13:11:41,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:41,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:42,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:42,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20942135] [2024-05-12 13:11:42,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20942135] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:42,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:42,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:42,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200317057] [2024-05-12 13:11:42,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:42,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:42,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:42,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:42,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:42,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:42,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 187 transitions, 1842 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:42,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:42,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:42,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:43,976 INFO L124 PetriNetUnfolderBase]: 2486/6050 cut-off events. [2024-05-12 13:11:43,976 INFO L125 PetriNetUnfolderBase]: For 101198/101202 co-relation queries the response was YES. [2024-05-12 13:11:44,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21767 conditions, 6050 events. 2486/6050 cut-off events. For 101198/101202 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 57511 event pairs, 1431 based on Foata normal form. 6/5684 useless extension candidates. Maximal degree in co-relation 21637. Up to 4214 conditions per place. [2024-05-12 13:11:44,041 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 120 selfloop transitions, 88 changer transitions 0/216 dead transitions. [2024-05-12 13:11:44,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 216 transitions, 2352 flow [2024-05-12 13:11:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-05-12 13:11:44,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-05-12 13:11:44,042 INFO L175 Difference]: Start difference. First operand has 283 places, 187 transitions, 1842 flow. Second operand 11 states and 189 transitions. [2024-05-12 13:11:44,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 216 transitions, 2352 flow [2024-05-12 13:11:44,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 216 transitions, 2315 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:44,548 INFO L231 Difference]: Finished difference. Result has 285 places, 187 transitions, 1984 flow [2024-05-12 13:11:44,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1984, PETRI_PLACES=285, PETRI_TRANSITIONS=187} [2024-05-12 13:11:44,549 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-05-12 13:11:44,549 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 187 transitions, 1984 flow [2024-05-12 13:11:44,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:44,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:44,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:44,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-05-12 13:11:44,549 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:44,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash 303814471, now seen corresponding path program 11 times [2024-05-12 13:11:44,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:44,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630228958] [2024-05-12 13:11:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:44,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:46,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:46,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630228958] [2024-05-12 13:11:46,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630228958] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:46,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:46,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:46,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204513066] [2024-05-12 13:11:46,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:46,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:46,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:46,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:46,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:46,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:46,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 187 transitions, 1984 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:46,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:46,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:46,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:47,362 INFO L124 PetriNetUnfolderBase]: 2522/6126 cut-off events. [2024-05-12 13:11:47,363 INFO L125 PetriNetUnfolderBase]: For 102991/102995 co-relation queries the response was YES. [2024-05-12 13:11:47,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22190 conditions, 6126 events. 2522/6126 cut-off events. For 102991/102995 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 58366 event pairs, 1437 based on Foata normal form. 6/5763 useless extension candidates. Maximal degree in co-relation 22059. Up to 4306 conditions per place. [2024-05-12 13:11:47,434 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 150 selfloop transitions, 62 changer transitions 0/220 dead transitions. [2024-05-12 13:11:47,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 220 transitions, 2514 flow [2024-05-12 13:11:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-05-12 13:11:47,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-05-12 13:11:47,436 INFO L175 Difference]: Start difference. First operand has 285 places, 187 transitions, 1984 flow. Second operand 11 states and 189 transitions. [2024-05-12 13:11:47,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 220 transitions, 2514 flow [2024-05-12 13:11:48,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 220 transitions, 2339 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 13:11:48,086 INFO L231 Difference]: Finished difference. Result has 287 places, 187 transitions, 1936 flow [2024-05-12 13:11:48,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1936, PETRI_PLACES=287, PETRI_TRANSITIONS=187} [2024-05-12 13:11:48,087 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-05-12 13:11:48,087 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 187 transitions, 1936 flow [2024-05-12 13:11:48,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:48,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:48,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:48,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-05-12 13:11:48,088 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:48,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash 695605939, now seen corresponding path program 12 times [2024-05-12 13:11:48,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:48,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746985340] [2024-05-12 13:11:48,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:48,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746985340] [2024-05-12 13:11:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746985340] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:49,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320189914] [2024-05-12 13:11:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:11:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:11:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:11:49,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-05-12 13:11:49,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 187 transitions, 1936 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:49,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:49,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-05-12 13:11:49,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:51,058 INFO L124 PetriNetUnfolderBase]: 2523/6175 cut-off events. [2024-05-12 13:11:51,058 INFO L125 PetriNetUnfolderBase]: For 75895/75897 co-relation queries the response was YES. [2024-05-12 13:11:51,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21652 conditions, 6175 events. 2523/6175 cut-off events. For 75895/75897 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 59273 event pairs, 1482 based on Foata normal form. 6/5799 useless extension candidates. Maximal degree in co-relation 21520. Up to 4577 conditions per place. [2024-05-12 13:11:51,139 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 192 selfloop transitions, 15 changer transitions 0/215 dead transitions. [2024-05-12 13:11:51,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 215 transitions, 2248 flow [2024-05-12 13:11:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-05-12 13:11:51,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-05-12 13:11:51,141 INFO L175 Difference]: Start difference. First operand has 287 places, 187 transitions, 1936 flow. Second operand 11 states and 175 transitions. [2024-05-12 13:11:51,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 215 transitions, 2248 flow [2024-05-12 13:11:51,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 215 transitions, 1907 flow, removed 17 selfloop flow, removed 69 redundant places. [2024-05-12 13:11:51,466 INFO L231 Difference]: Finished difference. Result has 227 places, 186 transitions, 1433 flow [2024-05-12 13:11:51,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1433, PETRI_PLACES=227, PETRI_TRANSITIONS=186} [2024-05-12 13:11:51,466 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-05-12 13:11:51,466 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 186 transitions, 1433 flow [2024-05-12 13:11:51,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:51,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:51,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:51,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-05-12 13:11:51,467 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:51,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1807633388, now seen corresponding path program 1 times [2024-05-12 13:11:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386832820] [2024-05-12 13:11:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:51,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:51,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386832820] [2024-05-12 13:11:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386832820] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:51,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:51,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:11:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871043168] [2024-05-12 13:11:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:11:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:11:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:11:51,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-05-12 13:11:51,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 186 transitions, 1433 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:51,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:51,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-05-12 13:11:51,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:52,015 INFO L124 PetriNetUnfolderBase]: 1460/3819 cut-off events. [2024-05-12 13:11:52,015 INFO L125 PetriNetUnfolderBase]: For 16586/16592 co-relation queries the response was YES. [2024-05-12 13:11:52,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 3819 events. 1460/3819 cut-off events. For 16586/16592 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 33889 event pairs, 242 based on Foata normal form. 295/3944 useless extension candidates. Maximal degree in co-relation 11450. Up to 1089 conditions per place. [2024-05-12 13:11:52,035 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 93 selfloop transitions, 63 changer transitions 1/192 dead transitions. [2024-05-12 13:11:52,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 192 transitions, 1709 flow [2024-05-12 13:11:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:11:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:11:52,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-05-12 13:11:52,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5837837837837838 [2024-05-12 13:11:52,036 INFO L175 Difference]: Start difference. First operand has 227 places, 186 transitions, 1433 flow. Second operand 5 states and 108 transitions. [2024-05-12 13:11:52,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 192 transitions, 1709 flow [2024-05-12 13:11:52,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 192 transitions, 1526 flow, removed 8 selfloop flow, removed 36 redundant places. [2024-05-12 13:11:52,089 INFO L231 Difference]: Finished difference. Result has 197 places, 182 transitions, 1381 flow [2024-05-12 13:11:52,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1381, PETRI_PLACES=197, PETRI_TRANSITIONS=182} [2024-05-12 13:11:52,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-05-12 13:11:52,090 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 182 transitions, 1381 flow [2024-05-12 13:11:52,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:52,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:52,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:52,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-05-12 13:11:52,090 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:52,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1652266584, now seen corresponding path program 1 times [2024-05-12 13:11:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:52,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550566560] [2024-05-12 13:11:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550566560] [2024-05-12 13:11:52,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550566560] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:52,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:52,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:11:52,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500754880] [2024-05-12 13:11:52,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:52,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:52,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:52,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-05-12 13:11:52,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 182 transitions, 1381 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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) [2024-05-12 13:11:52,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:52,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-05-12 13:11:52,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:52,815 INFO L124 PetriNetUnfolderBase]: 1140/2924 cut-off events. [2024-05-12 13:11:52,815 INFO L125 PetriNetUnfolderBase]: For 5579/5579 co-relation queries the response was YES. [2024-05-12 13:11:52,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 2924 events. 1140/2924 cut-off events. For 5579/5579 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 24345 event pairs, 469 based on Foata normal form. 80/2902 useless extension candidates. Maximal degree in co-relation 8308. Up to 848 conditions per place. [2024-05-12 13:11:52,829 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 56 selfloop transitions, 27 changer transitions 101/224 dead transitions. [2024-05-12 13:11:52,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 224 transitions, 1803 flow [2024-05-12 13:11:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 13:11:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 13:11:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 252 transitions. [2024-05-12 13:11:52,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5239085239085239 [2024-05-12 13:11:52,830 INFO L175 Difference]: Start difference. First operand has 197 places, 182 transitions, 1381 flow. Second operand 13 states and 252 transitions. [2024-05-12 13:11:52,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 224 transitions, 1803 flow [2024-05-12 13:11:52,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 224 transitions, 1529 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 13:11:52,858 INFO L231 Difference]: Finished difference. Result has 209 places, 103 transitions, 691 flow [2024-05-12 13:11:52,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=691, PETRI_PLACES=209, PETRI_TRANSITIONS=103} [2024-05-12 13:11:52,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-05-12 13:11:52,859 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 103 transitions, 691 flow [2024-05-12 13:11:52,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 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) [2024-05-12 13:11:52,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:52,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-05-12 13:11:52,859 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:52,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1212715140, now seen corresponding path program 2 times [2024-05-12 13:11:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848776865] [2024-05-12 13:11:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:52,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:52,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848776865] [2024-05-12 13:11:52,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848776865] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:52,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:52,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:52,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176269302] [2024-05-12 13:11:52,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:52,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:52,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:52,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:52,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:53,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-05-12 13:11:53,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 103 transitions, 691 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:53,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:53,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-05-12 13:11:53,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:53,211 INFO L124 PetriNetUnfolderBase]: 480/1280 cut-off events. [2024-05-12 13:11:53,212 INFO L125 PetriNetUnfolderBase]: For 1279/1279 co-relation queries the response was YES. [2024-05-12 13:11:53,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3566 conditions, 1280 events. 480/1280 cut-off events. For 1279/1279 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8888 event pairs, 236 based on Foata normal form. 40/1271 useless extension candidates. Maximal degree in co-relation 3527. Up to 403 conditions per place. [2024-05-12 13:11:53,217 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 29 selfloop transitions, 5 changer transitions 68/121 dead transitions. [2024-05-12 13:11:53,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 121 transitions, 901 flow [2024-05-12 13:11:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-05-12 13:11:53,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-05-12 13:11:53,218 INFO L175 Difference]: Start difference. First operand has 209 places, 103 transitions, 691 flow. Second operand 8 states and 155 transitions. [2024-05-12 13:11:53,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 121 transitions, 901 flow [2024-05-12 13:11:53,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 649 flow, removed 30 selfloop flow, removed 36 redundant places. [2024-05-12 13:11:53,223 INFO L231 Difference]: Finished difference. Result has 121 places, 50 transitions, 221 flow [2024-05-12 13:11:53,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=221, PETRI_PLACES=121, PETRI_TRANSITIONS=50} [2024-05-12 13:11:53,224 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-05-12 13:11:53,224 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 50 transitions, 221 flow [2024-05-12 13:11:53,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:53,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:53,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:53,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-05-12 13:11:53,224 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:53,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash -178381268, now seen corresponding path program 3 times [2024-05-12 13:11:53,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:53,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043557526] [2024-05-12 13:11:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:53,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043557526] [2024-05-12 13:11:53,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043557526] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:53,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:53,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:11:53,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223773722] [2024-05-12 13:11:53,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:53,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:11:53,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:53,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:11:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:11:53,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-05-12 13:11:53,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 50 transitions, 221 flow. Second operand has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:53,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:53,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-05-12 13:11:53,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:53,929 INFO L124 PetriNetUnfolderBase]: 168/459 cut-off events. [2024-05-12 13:11:53,929 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-05-12 13:11:53,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 459 events. 168/459 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2390 event pairs, 20 based on Foata normal form. 16/459 useless extension candidates. Maximal degree in co-relation 1033. Up to 100 conditions per place. [2024-05-12 13:11:53,931 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 19 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2024-05-12 13:11:53,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 69 transitions, 355 flow [2024-05-12 13:11:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:11:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:11:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-05-12 13:11:53,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036855036855037 [2024-05-12 13:11:53,932 INFO L175 Difference]: Start difference. First operand has 121 places, 50 transitions, 221 flow. Second operand 11 states and 205 transitions. [2024-05-12 13:11:53,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 69 transitions, 355 flow [2024-05-12 13:11:53,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 314 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-05-12 13:11:53,933 INFO L231 Difference]: Finished difference. Result has 78 places, 34 transitions, 116 flow [2024-05-12 13:11:53,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=116, PETRI_PLACES=78, PETRI_TRANSITIONS=34} [2024-05-12 13:11:53,934 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-05-12 13:11:53,934 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 34 transitions, 116 flow [2024-05-12 13:11:53,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:53,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:53,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:53,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-05-12 13:11:53,934 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 13:11:53,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:53,935 INFO L85 PathProgramCache]: Analyzing trace with hash 536462340, now seen corresponding path program 4 times [2024-05-12 13:11:53,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:53,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625267602] [2024-05-12 13:11:53,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:53,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 13:11:53,951 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-12 13:11:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 13:11:53,989 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-12 13:11:53,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-12 13:11:53,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-05-12 13:11:53,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-05-12 13:11:53,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-05-12 13:11:53,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-05-12 13:11:53,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-05-12 13:11:53,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-05-12 13:11:53,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-05-12 13:11:53,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-05-12 13:11:53,993 INFO L445 BasicCegarLoop]: Path program histogram: [18, 15, 12, 10, 10, 8, 6, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:53,997 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 13:11:53,998 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 13:11:54,035 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 13:11:54,035 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 13:11:54,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 01:11:54 BasicIcfg [2024-05-12 13:11:54,036 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 13:11:54,036 INFO L158 Benchmark]: Toolchain (without parser) took 208034.04ms. Allocated memory was 148.9MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 118.3MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-05-12 13:11:54,036 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 42.5MB in the beginning and 42.4MB in the end (delta: 105.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 13:11:54,037 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 13:11:54,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.21ms. Allocated memory is still 148.9MB. Free memory was 118.3MB in the beginning and 83.8MB in the end (delta: 34.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-05-12 13:11:54,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.94ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 80.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 13:11:54,037 INFO L158 Benchmark]: Boogie Preprocessor took 47.87ms. Allocated memory is still 148.9MB. Free memory was 80.3MB in the beginning and 76.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 13:11:54,037 INFO L158 Benchmark]: RCFGBuilder took 672.94ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 76.9MB in the beginning and 139.3MB in the end (delta: -62.5MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2024-05-12 13:11:54,038 INFO L158 Benchmark]: TraceAbstraction took 206723.17ms. Allocated memory was 199.2MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 138.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-05-12 13:11:54,039 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 42.5MB in the beginning and 42.4MB in the end (delta: 105.0kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.21ms. Allocated memory is still 148.9MB. Free memory was 118.3MB in the beginning and 83.8MB in the end (delta: 34.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.94ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 80.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.87ms. Allocated memory is still 148.9MB. Free memory was 80.3MB in the beginning and 76.9MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 672.94ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 76.9MB in the beginning and 139.3MB in the end (delta: -62.5MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. * TraceAbstraction took 206723.17ms. Allocated memory was 199.2MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 138.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p1_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L720] 0 _Bool x$flush_delayed; [L721] 0 int x$mem_tmp; [L722] 0 _Bool x$r_buff0_thd0; [L723] 0 _Bool x$r_buff0_thd1; [L724] 0 _Bool x$r_buff0_thd2; [L725] 0 _Bool x$r_buff1_thd0; [L726] 0 _Bool x$r_buff1_thd1; [L727] 0 _Bool x$r_buff1_thd2; [L728] 0 _Bool x$read_delayed; [L729] 0 int *x$read_delayed_var; [L730] 0 int x$w_buff0; [L731] 0 _Bool x$w_buff0_used; [L732] 0 int x$w_buff1; [L733] 0 _Bool x$w_buff1_used; [L735] 0 int y = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L821] 0 pthread_t t311; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L822] 0 //@ ghost multithreaded = 1; [L822] FCALL, FORK 0 pthread_create(&t311, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t311={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L823] 0 pthread_t t312; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t311={5:0}, t312={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L824] 0 //@ assert ((((((((((((((((!multithreaded || (0 <= __unbuffered_cnt)) && (!multithreaded || (x$flush_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (((0 <= x$mem_tmp) && (x$mem_tmp <= 1)) && ((x$mem_tmp == 0) || (x$mem_tmp == 1))))) && (!multithreaded || (((0 <= x) && (x <= 1)) && ((x == 0) || (x == 1))))) && (!multithreaded || (((0 <= x$w_buff0) && (x$w_buff0 <= 1)) && ((x$w_buff0 == 0) || (x$w_buff0 == 1))))) && (!multithreaded || (((0 <= x$w_buff1) && (x$w_buff1 <= 1)) && ((x$w_buff1 == 0) || (x$w_buff1 == 1))))) && (!multithreaded || (((0 <= y) && (y <= 1)) && ((y == 0) || (y == 1))))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EBX) && (__unbuffered_p1_EBX <= 1)) && ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 1)) && ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1))))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1))))); [L824] FCALL, FORK 0 pthread_create(&t312, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t311={5:0}, t312={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L769] 2 x$w_buff1 = x$w_buff0 [L770] 2 x$w_buff0 = 1 [L771] 2 x$w_buff1_used = x$w_buff0_used [L772] 2 x$w_buff0_used = (_Bool)1 [L773] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L773] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L774] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L775] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L776] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L777] 2 x$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L780] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L781] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L782] 2 x$flush_delayed = weak$$choice2 [L783] 2 x$mem_tmp = x [L784] 2 x = !x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff1) [L785] 2 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : x$w_buff0)) [L786] 2 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff1 : x$w_buff1)) [L787] 2 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used)) [L788] 2 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L789] 2 x$r_buff0_thd2 = weak$$choice2 ? x$r_buff0_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff0_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2)) [L790] 2 x$r_buff1_thd2 = weak$$choice2 ? x$r_buff1_thd2 : (!x$w_buff0_used || !x$r_buff0_thd2 && !x$w_buff1_used || !x$r_buff0_thd2 && !x$r_buff1_thd2 ? x$r_buff1_thd2 : (x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L791] 2 __unbuffered_p1_EAX = x [L792] 2 x = x$flush_delayed ? x$mem_tmp : x [L793] 2 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L796] 2 __unbuffered_p1_EBX = y VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L741] 1 y = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L744] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L745] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L746] 1 x$flush_delayed = weak$$choice2 [L747] 1 x$mem_tmp = x [L748] 1 x = !x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : x$w_buff1) [L749] 1 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : x$w_buff0)) [L750] 1 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff1 : x$w_buff1)) [L751] 1 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used)) [L752] 1 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L753] 1 x$r_buff0_thd1 = weak$$choice2 ? x$r_buff0_thd1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$r_buff0_thd1 : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1)) [L754] 1 x$r_buff1_thd1 = weak$$choice2 ? x$r_buff1_thd1 : (!x$w_buff0_used || !x$r_buff0_thd1 && !x$w_buff1_used || !x$r_buff0_thd1 && !x$r_buff1_thd1 ? x$r_buff1_thd1 : (x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L755] 1 __unbuffered_p0_EAX = x [L756] 1 x = x$flush_delayed ? x$mem_tmp : x [L757] 1 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L799] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L800] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L801] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L802] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L803] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L825] 0 //@ assert ((((((((((((((((!multithreaded || (0 <= __unbuffered_cnt)) && (!multithreaded || (x$flush_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (((0 <= x$mem_tmp) && (x$mem_tmp <= 1)) && ((x$mem_tmp == 0) || (x$mem_tmp == 1))))) && (!multithreaded || (((0 <= x) && (x <= 1)) && ((x == 0) || (x == 1))))) && (!multithreaded || (((0 <= x$w_buff0) && (x$w_buff0 <= 1)) && ((x$w_buff0 == 0) || (x$w_buff0 == 1))))) && (!multithreaded || (((0 <= x$w_buff1) && (x$w_buff1 <= 1)) && ((x$w_buff1 == 0) || (x$w_buff1 == 1))))) && (!multithreaded || (((0 <= y) && (y <= 1)) && ((y == 0) || (y == 1))))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EBX) && (__unbuffered_p1_EBX <= 1)) && ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1))))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 1)) && ((__unbuffered_p0_EAX == 0) || (__unbuffered_p0_EAX == 1))))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1))))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t311={5:0}, t312={3:0}, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L762] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L806] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L826] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311={5:0}, t312={3:0}, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L828] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L828] RET 0 assume_abort_if_not(main$tmp_guard0) [L830] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L831] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L832] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L833] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L834] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311={5:0}, t312={3:0}, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L837] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 0) VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t311={5:0}, t312={3:0}, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L839] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L19] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 824]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 825]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 824]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 822]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 206.6s, OverallIterations: 113, TraceHistogramMax: 1, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 92.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7235 SdHoareTripleChecker+Valid, 31.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6305 mSDsluCounter, 2126 SdHoareTripleChecker+Invalid, 26.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1857 mSDsCounter, 1244 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50509 IncrementalHoareTripleChecker+Invalid, 51753 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1244 mSolverCounterUnsat, 269 mSDtfsCounter, 50509 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1190 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 31.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1984occurred in iteration=106, InterpolantAutomatonStates: 1033, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 111.4s InterpolantComputationTime, 1921 NumberOfCodeBlocks, 1921 NumberOfCodeBlocksAsserted, 113 NumberOfCheckSat, 1782 ConstructedInterpolants, 0 QuantifiedInterpolants, 75395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 112 InterpolantComputations, 112 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-05-12 13:11:54,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE