./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/safe001_power.opt_pso.oepc_pso.opt_rmo.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/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i ./goblint.2024-05-07_14-17-48.files/protection/safe001_power.opt_pso.oepc_pso.opt_rmo.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 13:34:01,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:34:01,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:34:01,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:34:01,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:34:01,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:34:01,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:34:01,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:34:01,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:34:01,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:34:01,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:34:01,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:34:01,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:34:01,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:34:01,474 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:34:01,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:34:01,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:34:01,475 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:34:01,475 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:34:01,475 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:34:01,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:34:01,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:34:01,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:34:01,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:34:01,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:34:01,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:34:01,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:34:01,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:34:01,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:34:01,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:34:01,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:34:01,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:34:01,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:34:01,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:34:01,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:34:01,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:34:01,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:34:01,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:34:01,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:34:01,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:34:01,479 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:34:01,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:34:01,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:34:01,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:34:01,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:34:01,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:34:01,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:34:01,686 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:34:01,687 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:34:01,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.yml/witness.yml [2024-05-12 13:34:01,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:34:01,878 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:34:01,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-05-12 13:34:02,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:34:02,992 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:34:02,993 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-05-12 13:34:03,008 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414d436f7/921948038b194b8e91f21c31c1fb74c7/FLAG6aba8f051 [2024-05-12 13:34:03,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414d436f7/921948038b194b8e91f21c31c1fb74c7 [2024-05-12 13:34:03,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:34:03,027 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:34:03,029 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:34:03,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:34:03,033 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:34:03,034 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:34:01" (1/2) ... [2024-05-12 13:34:03,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20aba812 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:34:03, skipping insertion in model container [2024-05-12 13:34:03,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:34:01" (1/2) ... [2024-05-12 13:34:03,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73ff15c6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:34:03, skipping insertion in model container [2024-05-12 13:34:03,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:34:03" (2/2) ... [2024-05-12 13:34:03,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20aba812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03, skipping insertion in model container [2024-05-12 13:34:03,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:34:03" (2/2) ... [2024-05-12 13:34:03,037 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:34:03,111 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:34:03,112 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) [2024-05-12 13:34:03,113 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) [2024-05-12 13:34:03,113 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) [2024-05-12 13:34:03,113 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:34:03,113 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-05-12 13:34:03,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:34:03,310 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/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i[976,989] [2024-05-12 13:34:03,484 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:34:03,494 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:34:03,526 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/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i[976,989] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:34:03,609 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:34:03,652 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:34:03,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03 WrapperNode [2024-05-12 13:34:03,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:34:03,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:34:03,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:34:03,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:34:03,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,723 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2024-05-12 13:34:03,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:34:03,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:34:03,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:34:03,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:34:03,733 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,768 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 13:34:03,769 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,769 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:34:03,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:34:03,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:34:03,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:34:03,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (1/1) ... [2024-05-12 13:34:03,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:34:03,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:34:03,821 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 13:34:03,839 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 13:34:03,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:34:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:34:03,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:34:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:34:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:34:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:34:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:34:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:34:03,855 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:34:03,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:34:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:34:03,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:34:03,856 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:34:03,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:34:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:34:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:34:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:34:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:34:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:34:03,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:34:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:34:03,860 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 13:34:03,995 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:34:03,997 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:34:04,357 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:34:04,357 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:34:04,513 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:34:04,514 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:34:04,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:34:04 BoogieIcfgContainer [2024-05-12 13:34:04,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:34:04,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:34:04,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:34:04,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:34:04,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:34:01" (1/4) ... [2024-05-12 13:34:04,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865eaae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:34:04, skipping insertion in model container [2024-05-12 13:34:04,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:34:03" (2/4) ... [2024-05-12 13:34:04,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865eaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:34:04, skipping insertion in model container [2024-05-12 13:34:04,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:03" (3/4) ... [2024-05-12 13:34:04,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7865eaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:34:04, skipping insertion in model container [2024-05-12 13:34:04,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:34:04" (4/4) ... [2024-05-12 13:34:04,520 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-05-12 13:34:04,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:34:04,533 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:34:04,533 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:34:04,577 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:34:04,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:34:04,619 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-05-12 13:34:04,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:34:04,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-05-12 13:34:04,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:34:04,625 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-05-12 13:34:04,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:34:04,635 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;@4f3ed068, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:34:04,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:34:04,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:34:04,639 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:34:04,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:34:04,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:04,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:34:04,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:04,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1744727070, now seen corresponding path program 1 times [2024-05-12 13:34:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:04,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452289238] [2024-05-12 13:34:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:04,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:05,716 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 13:34:05,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:05,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452289238] [2024-05-12 13:34:05,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452289238] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:05,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:05,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:34:05,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119801265] [2024-05-12 13:34:05,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:05,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:34:05,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:05,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:34:05,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:34:05,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:34:05,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 13:34:05,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:05,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:34:05,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:06,457 INFO L124 PetriNetUnfolderBase]: 3506/5598 cut-off events. [2024-05-12 13:34:06,457 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-05-12 13:34:06,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10751 conditions, 5598 events. 3506/5598 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 34508 event pairs, 2838 based on Foata normal form. 176/5337 useless extension candidates. Maximal degree in co-relation 10736. Up to 5051 conditions per place. [2024-05-12 13:34:06,486 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 44 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-05-12 13:34:06,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 231 flow [2024-05-12 13:34:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:34:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:34:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-05-12 13:34:06,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-05-12 13:34:06,495 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 93 transitions. [2024-05-12 13:34:06,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 231 flow [2024-05-12 13:34:06,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:34:06,503 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-05-12 13:34:06,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-05-12 13:34:06,507 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:34:06,508 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-05-12 13:34:06,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 13:34:06,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:06,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:06,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:34:06,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:06,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash 530690505, now seen corresponding path program 1 times [2024-05-12 13:34:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251984681] [2024-05-12 13:34:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:07,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251984681] [2024-05-12 13:34:07,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251984681] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:07,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:07,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:34:07,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239628157] [2024-05-12 13:34:07,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:07,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:34:07,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:07,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:34:07,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:34:07,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:07,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 13:34:07,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:07,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:07,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:07,837 INFO L124 PetriNetUnfolderBase]: 4247/6751 cut-off events. [2024-05-12 13:34:07,838 INFO L125 PetriNetUnfolderBase]: For 955/994 co-relation queries the response was YES. [2024-05-12 13:34:07,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14430 conditions, 6751 events. 4247/6751 cut-off events. For 955/994 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 41489 event pairs, 2387 based on Foata normal form. 13/6286 useless extension candidates. Maximal degree in co-relation 14415. Up to 6041 conditions per place. [2024-05-12 13:34:07,867 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 57 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-05-12 13:34:07,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 351 flow [2024-05-12 13:34:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:34:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:34:07,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-05-12 13:34:07,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6117021276595744 [2024-05-12 13:34:07,873 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 115 transitions. [2024-05-12 13:34:07,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 351 flow [2024-05-12 13:34:07,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:34:07,877 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 216 flow [2024-05-12 13:34:07,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-05-12 13:34:07,882 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-05-12 13:34:07,882 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 216 flow [2024-05-12 13:34:07,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 13:34:07,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:07,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:07,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:34:07,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:07,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash 530474420, now seen corresponding path program 1 times [2024-05-12 13:34:07,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:07,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899739190] [2024-05-12 13:34:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:07,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:07,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899739190] [2024-05-12 13:34:07,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899739190] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:07,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:07,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:34:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922990265] [2024-05-12 13:34:07,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:07,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:34:07,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:07,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:34:07,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:34:07,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-05-12 13:34:07,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:07,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:07,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-05-12 13:34:07,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:08,173 INFO L124 PetriNetUnfolderBase]: 1024/2018 cut-off events. [2024-05-12 13:34:08,173 INFO L125 PetriNetUnfolderBase]: For 594/662 co-relation queries the response was YES. [2024-05-12 13:34:08,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 2018 events. 1024/2018 cut-off events. For 594/662 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13896 event pairs, 427 based on Foata normal form. 13/1871 useless extension candidates. Maximal degree in co-relation 4220. Up to 1271 conditions per place. [2024-05-12 13:34:08,184 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 36 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-05-12 13:34:08,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 302 flow [2024-05-12 13:34:08,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:34:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:34:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-05-12 13:34:08,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7304964539007093 [2024-05-12 13:34:08,186 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 216 flow. Second operand 3 states and 103 transitions. [2024-05-12 13:34:08,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 302 flow [2024-05-12 13:34:08,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 298 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 13:34:08,188 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 196 flow [2024-05-12 13:34:08,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-05-12 13:34:08,188 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-05-12 13:34:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 196 flow [2024-05-12 13:34:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:08,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:08,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:08,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:34:08,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:08,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:08,189 INFO L85 PathProgramCache]: Analyzing trace with hash -935384188, now seen corresponding path program 1 times [2024-05-12 13:34:08,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:08,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799490354] [2024-05-12 13:34:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:08,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:09,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:09,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799490354] [2024-05-12 13:34:09,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799490354] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:09,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:09,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:34:09,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520861290] [2024-05-12 13:34:09,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:09,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:34:09,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:34:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:34:09,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:09,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:09,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:09,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:09,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:09,722 INFO L124 PetriNetUnfolderBase]: 3600/5744 cut-off events. [2024-05-12 13:34:09,723 INFO L125 PetriNetUnfolderBase]: For 3063/3126 co-relation queries the response was YES. [2024-05-12 13:34:09,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13530 conditions, 5744 events. 3600/5744 cut-off events. For 3063/3126 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 34019 event pairs, 1769 based on Foata normal form. 25/5581 useless extension candidates. Maximal degree in co-relation 13510. Up to 5086 conditions per place. [2024-05-12 13:34:09,745 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 60 selfloop transitions, 12 changer transitions 1/82 dead transitions. [2024-05-12 13:34:09,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 418 flow [2024-05-12 13:34:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:34:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:34:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-05-12 13:34:09,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2024-05-12 13:34:09,747 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 196 flow. Second operand 5 states and 133 transitions. [2024-05-12 13:34:09,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 418 flow [2024-05-12 13:34:09,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 82 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:34:09,750 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 232 flow [2024-05-12 13:34:09,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-05-12 13:34:09,751 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-05-12 13:34:09,751 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 232 flow [2024-05-12 13:34:09,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:09,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:09,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:09,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:34:09,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:09,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:09,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1316222817, now seen corresponding path program 1 times [2024-05-12 13:34:09,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:09,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084394845] [2024-05-12 13:34:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:09,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:10,372 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 13:34:10,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:10,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084394845] [2024-05-12 13:34:10,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084394845] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:10,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:10,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:34:10,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696301133] [2024-05-12 13:34:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:10,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:34:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:10,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:34:10,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:34:10,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:10,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 13:34:10,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:10,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:10,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:10,895 INFO L124 PetriNetUnfolderBase]: 2959/4744 cut-off events. [2024-05-12 13:34:10,895 INFO L125 PetriNetUnfolderBase]: For 3532/3538 co-relation queries the response was YES. [2024-05-12 13:34:10,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11890 conditions, 4744 events. 2959/4744 cut-off events. For 3532/3538 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 27852 event pairs, 1631 based on Foata normal form. 6/4596 useless extension candidates. Maximal degree in co-relation 11869. Up to 4260 conditions per place. [2024-05-12 13:34:10,920 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 61 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-05-12 13:34:10,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 462 flow [2024-05-12 13:34:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:34:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:34:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-05-12 13:34:10,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-05-12 13:34:10,922 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 232 flow. Second operand 5 states and 118 transitions. [2024-05-12 13:34:10,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 462 flow [2024-05-12 13:34:10,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 426 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 13:34:10,926 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 285 flow [2024-05-12 13:34:10,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-05-12 13:34:10,927 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-05-12 13:34:10,927 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 285 flow [2024-05-12 13:34:10,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 13:34:10,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:10,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:10,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:34:10,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:10,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:10,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2146766712, now seen corresponding path program 1 times [2024-05-12 13:34:10,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:10,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828204096] [2024-05-12 13:34:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:10,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:11,594 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 13:34:11,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:11,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828204096] [2024-05-12 13:34:11,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828204096] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:11,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:11,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:34:11,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535564636] [2024-05-12 13:34:11,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:11,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:34:11,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:11,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:34:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:34:11,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:11,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 285 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 13:34:11,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:11,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:11,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:12,256 INFO L124 PetriNetUnfolderBase]: 4334/6880 cut-off events. [2024-05-12 13:34:12,256 INFO L125 PetriNetUnfolderBase]: For 6882/6882 co-relation queries the response was YES. [2024-05-12 13:34:12,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18099 conditions, 6880 events. 4334/6880 cut-off events. For 6882/6882 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 41282 event pairs, 2228 based on Foata normal form. 2/6660 useless extension candidates. Maximal degree in co-relation 18075. Up to 6169 conditions per place. [2024-05-12 13:34:12,285 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 79 selfloop transitions, 12 changer transitions 0/98 dead transitions. [2024-05-12 13:34:12,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 98 transitions, 576 flow [2024-05-12 13:34:12,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:34:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:34:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-05-12 13:34:12,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:34:12,287 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 285 flow. Second operand 6 states and 132 transitions. [2024-05-12 13:34:12,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 98 transitions, 576 flow [2024-05-12 13:34:12,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 559 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-05-12 13:34:12,291 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 356 flow [2024-05-12 13:34:12,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-05-12 13:34:12,292 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-05-12 13:34:12,292 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 356 flow [2024-05-12 13:34:12,293 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 13:34:12,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:12,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:12,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:34:12,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:12,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:12,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2125259742, now seen corresponding path program 1 times [2024-05-12 13:34:12,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:12,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443251463] [2024-05-12 13:34:12,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:12,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:13,109 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 13:34:13,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443251463] [2024-05-12 13:34:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443251463] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:13,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:13,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:13,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848222651] [2024-05-12 13:34:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:13,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:13,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:13,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:13,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:13,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:13,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 356 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 13:34:13,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:13,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:13,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:13,966 INFO L124 PetriNetUnfolderBase]: 4329/6867 cut-off events. [2024-05-12 13:34:13,966 INFO L125 PetriNetUnfolderBase]: For 8583/8583 co-relation queries the response was YES. [2024-05-12 13:34:13,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19213 conditions, 6867 events. 4329/6867 cut-off events. For 8583/8583 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 41099 event pairs, 2205 based on Foata normal form. 2/6649 useless extension candidates. Maximal degree in co-relation 19185. Up to 6149 conditions per place. [2024-05-12 13:34:14,001 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 89 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-05-12 13:34:14,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 123 transitions, 771 flow [2024-05-12 13:34:14,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-05-12 13:34:14,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46200607902735563 [2024-05-12 13:34:14,003 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 356 flow. Second operand 7 states and 152 transitions. [2024-05-12 13:34:14,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 123 transitions, 771 flow [2024-05-12 13:34:14,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 123 transitions, 769 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:34:14,010 INFO L231 Difference]: Finished difference. Result has 77 places, 93 transitions, 579 flow [2024-05-12 13:34:14,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=579, PETRI_PLACES=77, PETRI_TRANSITIONS=93} [2024-05-12 13:34:14,011 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-05-12 13:34:14,011 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 93 transitions, 579 flow [2024-05-12 13:34:14,012 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 13:34:14,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:14,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:14,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:34:14,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:14,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:14,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1450909426, now seen corresponding path program 1 times [2024-05-12 13:34:14,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:14,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539862089] [2024-05-12 13:34:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:14,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:14,686 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 13:34:14,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:14,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539862089] [2024-05-12 13:34:14,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539862089] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:14,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:14,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:14,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74829924] [2024-05-12 13:34:14,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:14,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:14,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:14,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:14,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:14,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:34:14,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 93 transitions, 579 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 13:34:14,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:14,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:34:14,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:15,514 INFO L124 PetriNetUnfolderBase]: 4324/6797 cut-off events. [2024-05-12 13:34:15,515 INFO L125 PetriNetUnfolderBase]: For 13761/13880 co-relation queries the response was YES. [2024-05-12 13:34:15,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21703 conditions, 6797 events. 4324/6797 cut-off events. For 13761/13880 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 40336 event pairs, 1655 based on Foata normal form. 34/6548 useless extension candidates. Maximal degree in co-relation 21669. Up to 6021 conditions per place. [2024-05-12 13:34:15,553 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 89 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2024-05-12 13:34:15,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 932 flow [2024-05-12 13:34:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:34:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:34:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-05-12 13:34:15,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-05-12 13:34:15,555 INFO L175 Difference]: Start difference. First operand has 77 places, 93 transitions, 579 flow. Second operand 6 states and 143 transitions. [2024-05-12 13:34:15,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 932 flow [2024-05-12 13:34:15,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 131 transitions, 914 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-05-12 13:34:15,567 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 688 flow [2024-05-12 13:34:15,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-05-12 13:34:15,567 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-05-12 13:34:15,568 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 688 flow [2024-05-12 13:34:15,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 13:34:15,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:15,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:15,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:34:15,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:15,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:15,569 INFO L85 PathProgramCache]: Analyzing trace with hash 30666937, now seen corresponding path program 1 times [2024-05-12 13:34:15,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:15,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528729984] [2024-05-12 13:34:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:16,249 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 13:34:16,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:16,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528729984] [2024-05-12 13:34:16,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528729984] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:16,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:16,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:16,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830191314] [2024-05-12 13:34:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:16,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:16,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:16,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:16,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 688 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 13:34:16,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:16,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:16,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:17,239 INFO L124 PetriNetUnfolderBase]: 4826/7576 cut-off events. [2024-05-12 13:34:17,239 INFO L125 PetriNetUnfolderBase]: For 18787/18802 co-relation queries the response was YES. [2024-05-12 13:34:17,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25773 conditions, 7576 events. 4826/7576 cut-off events. For 18787/18802 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45132 event pairs, 1797 based on Foata normal form. 18/7363 useless extension candidates. Maximal degree in co-relation 25735. Up to 6504 conditions per place. [2024-05-12 13:34:17,280 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 114 selfloop transitions, 39 changer transitions 0/160 dead transitions. [2024-05-12 13:34:17,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 160 transitions, 1260 flow [2024-05-12 13:34:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-05-12 13:34:17,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-05-12 13:34:17,281 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 688 flow. Second operand 7 states and 163 transitions. [2024-05-12 13:34:17,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 160 transitions, 1260 flow [2024-05-12 13:34:17,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 160 transitions, 1219 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-05-12 13:34:17,297 INFO L231 Difference]: Finished difference. Result has 90 places, 122 transitions, 913 flow [2024-05-12 13:34:17,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=913, PETRI_PLACES=90, PETRI_TRANSITIONS=122} [2024-05-12 13:34:17,298 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2024-05-12 13:34:17,298 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 122 transitions, 913 flow [2024-05-12 13:34:17,298 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 13:34:17,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:17,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:17,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:34:17,299 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:17,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:17,299 INFO L85 PathProgramCache]: Analyzing trace with hash 30666720, now seen corresponding path program 2 times [2024-05-12 13:34:17,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:17,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940306615] [2024-05-12 13:34:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:17,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:18,040 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 13:34:18,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:18,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940306615] [2024-05-12 13:34:18,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940306615] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:18,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:18,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:18,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44310194] [2024-05-12 13:34:18,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:18,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:18,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:18,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:18,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:34:18,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 122 transitions, 913 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 13:34:18,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:18,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:34:18,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:18,957 INFO L124 PetriNetUnfolderBase]: 4744/7463 cut-off events. [2024-05-12 13:34:18,957 INFO L125 PetriNetUnfolderBase]: For 31684/31862 co-relation queries the response was YES. [2024-05-12 13:34:18,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29774 conditions, 7463 events. 4744/7463 cut-off events. For 31684/31862 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 45169 event pairs, 1572 based on Foata normal form. 31/7131 useless extension candidates. Maximal degree in co-relation 29732. Up to 6362 conditions per place. [2024-05-12 13:34:18,996 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 111 selfloop transitions, 38 changer transitions 0/168 dead transitions. [2024-05-12 13:34:18,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 168 transitions, 1483 flow [2024-05-12 13:34:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:34:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:34:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-05-12 13:34:18,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-05-12 13:34:18,998 INFO L175 Difference]: Start difference. First operand has 90 places, 122 transitions, 913 flow. Second operand 6 states and 145 transitions. [2024-05-12 13:34:18,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 168 transitions, 1483 flow [2024-05-12 13:34:19,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 168 transitions, 1450 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-05-12 13:34:19,031 INFO L231 Difference]: Finished difference. Result has 95 places, 136 transitions, 1135 flow [2024-05-12 13:34:19,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1135, PETRI_PLACES=95, PETRI_TRANSITIONS=136} [2024-05-12 13:34:19,032 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2024-05-12 13:34:19,032 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 136 transitions, 1135 flow [2024-05-12 13:34:19,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 13:34:19,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:19,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:19,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:34:19,033 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:19,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:19,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1458266873, now seen corresponding path program 2 times [2024-05-12 13:34:19,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:19,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435077536] [2024-05-12 13:34:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:19,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:19,791 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 13:34:19,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:19,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435077536] [2024-05-12 13:34:19,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435077536] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:19,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:19,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:19,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370963257] [2024-05-12 13:34:19,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:19,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:19,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:19,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 136 transitions, 1135 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 13:34:19,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:19,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:19,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:20,868 INFO L124 PetriNetUnfolderBase]: 5062/7941 cut-off events. [2024-05-12 13:34:20,868 INFO L125 PetriNetUnfolderBase]: For 36365/36380 co-relation queries the response was YES. [2024-05-12 13:34:20,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33259 conditions, 7941 events. 5062/7941 cut-off events. For 36365/36380 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 47632 event pairs, 1795 based on Foata normal form. 15/7710 useless extension candidates. Maximal degree in co-relation 33214. Up to 6904 conditions per place. [2024-05-12 13:34:20,913 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 155 selfloop transitions, 39 changer transitions 0/201 dead transitions. [2024-05-12 13:34:20,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 201 transitions, 1890 flow [2024-05-12 13:34:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:20,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:34:20,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:34:20,915 INFO L175 Difference]: Start difference. First operand has 95 places, 136 transitions, 1135 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:34:20,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 201 transitions, 1890 flow [2024-05-12 13:34:20,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 201 transitions, 1818 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-05-12 13:34:20,956 INFO L231 Difference]: Finished difference. Result has 102 places, 153 transitions, 1353 flow [2024-05-12 13:34:20,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1353, PETRI_PLACES=102, PETRI_TRANSITIONS=153} [2024-05-12 13:34:20,957 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-05-12 13:34:20,957 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 153 transitions, 1353 flow [2024-05-12 13:34:20,957 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 13:34:20,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:20,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:20,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:34:20,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:20,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1454371261, now seen corresponding path program 3 times [2024-05-12 13:34:20,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:20,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722547881] [2024-05-12 13:34:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:20,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:21,679 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 13:34:21,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:21,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722547881] [2024-05-12 13:34:21,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722547881] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:21,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:21,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:21,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282876956] [2024-05-12 13:34:21,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:21,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:21,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:21,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:21,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:21,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:21,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 153 transitions, 1353 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 13:34:21,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:21,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:21,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:22,701 INFO L124 PetriNetUnfolderBase]: 5065/7952 cut-off events. [2024-05-12 13:34:22,702 INFO L125 PetriNetUnfolderBase]: For 44798/44813 co-relation queries the response was YES. [2024-05-12 13:34:22,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35593 conditions, 7952 events. 5065/7952 cut-off events. For 44798/44813 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 47682 event pairs, 1810 based on Foata normal form. 12/7715 useless extension candidates. Maximal degree in co-relation 35545. Up to 7049 conditions per place. [2024-05-12 13:34:22,745 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 166 selfloop transitions, 38 changer transitions 0/211 dead transitions. [2024-05-12 13:34:22,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 211 transitions, 2142 flow [2024-05-12 13:34:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:22,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-05-12 13:34:22,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2024-05-12 13:34:22,747 INFO L175 Difference]: Start difference. First operand has 102 places, 153 transitions, 1353 flow. Second operand 7 states and 157 transitions. [2024-05-12 13:34:22,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 211 transitions, 2142 flow [2024-05-12 13:34:22,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 211 transitions, 2043 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-05-12 13:34:22,796 INFO L231 Difference]: Finished difference. Result has 109 places, 173 transitions, 1660 flow [2024-05-12 13:34:22,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1660, PETRI_PLACES=109, PETRI_TRANSITIONS=173} [2024-05-12 13:34:22,797 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-05-12 13:34:22,797 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 173 transitions, 1660 flow [2024-05-12 13:34:22,797 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 13:34:22,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:22,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:22,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:34:22,798 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:22,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1458543703, now seen corresponding path program 1 times [2024-05-12 13:34:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:22,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665265784] [2024-05-12 13:34:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:22,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:23,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:23,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665265784] [2024-05-12 13:34:23,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665265784] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:23,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:23,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:23,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019775558] [2024-05-12 13:34:23,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:23,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:23,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:23,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:23,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:23,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 173 transitions, 1660 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 13:34:23,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:23,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:23,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:25,093 INFO L124 PetriNetUnfolderBase]: 5078/7967 cut-off events. [2024-05-12 13:34:25,093 INFO L125 PetriNetUnfolderBase]: For 50567/50567 co-relation queries the response was YES. [2024-05-12 13:34:25,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36846 conditions, 7967 events. 5078/7967 cut-off events. For 50567/50567 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 47694 event pairs, 1779 based on Foata normal form. 4/7723 useless extension candidates. Maximal degree in co-relation 36793. Up to 7124 conditions per place. [2024-05-12 13:34:25,141 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 192 selfloop transitions, 28 changer transitions 0/227 dead transitions. [2024-05-12 13:34:25,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 227 transitions, 2315 flow [2024-05-12 13:34:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-05-12 13:34:25,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:34:25,142 INFO L175 Difference]: Start difference. First operand has 109 places, 173 transitions, 1660 flow. Second operand 8 states and 176 transitions. [2024-05-12 13:34:25,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 227 transitions, 2315 flow [2024-05-12 13:34:25,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 227 transitions, 2269 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-05-12 13:34:25,199 INFO L231 Difference]: Finished difference. Result has 117 places, 183 transitions, 1786 flow [2024-05-12 13:34:25,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1786, PETRI_PLACES=117, PETRI_TRANSITIONS=183} [2024-05-12 13:34:25,200 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-05-12 13:34:25,200 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 183 transitions, 1786 flow [2024-05-12 13:34:25,200 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 13:34:25,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:25,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:25,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:34:25,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:25,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash -40397945, now seen corresponding path program 1 times [2024-05-12 13:34:25,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:25,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762086713] [2024-05-12 13:34:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:25,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:26,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:26,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762086713] [2024-05-12 13:34:26,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762086713] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:26,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:26,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:26,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984708040] [2024-05-12 13:34:26,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:26,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:26,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:34:26,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 183 transitions, 1786 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:26,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:26,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:34:26,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:27,185 INFO L124 PetriNetUnfolderBase]: 4857/7609 cut-off events. [2024-05-12 13:34:27,185 INFO L125 PetriNetUnfolderBase]: For 60103/60631 co-relation queries the response was YES. [2024-05-12 13:34:27,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37045 conditions, 7609 events. 4857/7609 cut-off events. For 60103/60631 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 45618 event pairs, 1649 based on Foata normal form. 111/7336 useless extension candidates. Maximal degree in co-relation 36988. Up to 6675 conditions per place. [2024-05-12 13:34:27,243 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 160 selfloop transitions, 29 changer transitions 0/215 dead transitions. [2024-05-12 13:34:27,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 215 transitions, 2299 flow [2024-05-12 13:34:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:34:27,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:34:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-05-12 13:34:27,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:34:27,245 INFO L175 Difference]: Start difference. First operand has 117 places, 183 transitions, 1786 flow. Second operand 6 states and 142 transitions. [2024-05-12 13:34:27,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 215 transitions, 2299 flow [2024-05-12 13:34:27,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 215 transitions, 2209 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-05-12 13:34:27,328 INFO L231 Difference]: Finished difference. Result has 119 places, 186 transitions, 1815 flow [2024-05-12 13:34:27,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1815, PETRI_PLACES=119, PETRI_TRANSITIONS=186} [2024-05-12 13:34:27,329 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-05-12 13:34:27,329 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 186 transitions, 1815 flow [2024-05-12 13:34:27,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:27,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:27,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:27,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:34:27,330 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:27,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash 946921499, now seen corresponding path program 1 times [2024-05-12 13:34:27,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:27,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230874652] [2024-05-12 13:34:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:27,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:27,993 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 13:34:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230874652] [2024-05-12 13:34:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230874652] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:27,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:27,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:27,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546149305] [2024-05-12 13:34:27,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:27,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:27,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:28,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:28,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 186 transitions, 1815 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 13:34:28,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:28,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:28,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:29,329 INFO L124 PetriNetUnfolderBase]: 5498/8535 cut-off events. [2024-05-12 13:34:29,329 INFO L125 PetriNetUnfolderBase]: For 64167/64187 co-relation queries the response was YES. [2024-05-12 13:34:29,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41235 conditions, 8535 events. 5498/8535 cut-off events. For 64167/64187 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 50913 event pairs, 1659 based on Foata normal form. 24/8311 useless extension candidates. Maximal degree in co-relation 41176. Up to 7243 conditions per place. [2024-05-12 13:34:29,483 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 207 selfloop transitions, 53 changer transitions 0/267 dead transitions. [2024-05-12 13:34:29,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 267 transitions, 2895 flow [2024-05-12 13:34:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:34:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:34:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:34:29,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:34:29,486 INFO L175 Difference]: Start difference. First operand has 119 places, 186 transitions, 1815 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:34:29,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 267 transitions, 2895 flow [2024-05-12 13:34:29,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 267 transitions, 2833 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 13:34:29,562 INFO L231 Difference]: Finished difference. Result has 127 places, 213 transitions, 2220 flow [2024-05-12 13:34:29,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2220, PETRI_PLACES=127, PETRI_TRANSITIONS=213} [2024-05-12 13:34:29,563 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 74 predicate places. [2024-05-12 13:34:29,563 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 213 transitions, 2220 flow [2024-05-12 13:34:29,563 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 13:34:29,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:29,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:29,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:34:29,563 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:29,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:29,564 INFO L85 PathProgramCache]: Analyzing trace with hash 950676157, now seen corresponding path program 1 times [2024-05-12 13:34:29,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:29,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869464731] [2024-05-12 13:34:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:29,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:30,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:30,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869464731] [2024-05-12 13:34:30,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869464731] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:30,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:30,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:30,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891795494] [2024-05-12 13:34:30,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:30,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:30,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:30,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:30,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:30,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:30,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 213 transitions, 2220 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 13:34:30,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:30,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:30,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:31,810 INFO L124 PetriNetUnfolderBase]: 5652/8730 cut-off events. [2024-05-12 13:34:31,810 INFO L125 PetriNetUnfolderBase]: For 85184/85201 co-relation queries the response was YES. [2024-05-12 13:34:31,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47202 conditions, 8730 events. 5652/8730 cut-off events. For 85184/85201 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 51750 event pairs, 1725 based on Foata normal form. 20/8506 useless extension candidates. Maximal degree in co-relation 47139. Up to 7491 conditions per place. [2024-05-12 13:34:31,879 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 196 selfloop transitions, 65 changer transitions 0/268 dead transitions. [2024-05-12 13:34:31,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 268 transitions, 3093 flow [2024-05-12 13:34:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:31,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:34:31,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-05-12 13:34:31,880 INFO L175 Difference]: Start difference. First operand has 127 places, 213 transitions, 2220 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:34:31,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 268 transitions, 3093 flow [2024-05-12 13:34:32,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 268 transitions, 2934 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-05-12 13:34:32,009 INFO L231 Difference]: Finished difference. Result has 132 places, 220 transitions, 2325 flow [2024-05-12 13:34:32,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2325, PETRI_PLACES=132, PETRI_TRANSITIONS=220} [2024-05-12 13:34:32,010 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 79 predicate places. [2024-05-12 13:34:32,010 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 220 transitions, 2325 flow [2024-05-12 13:34:32,010 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 13:34:32,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:32,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:32,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:34:32,010 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:32,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash 950675909, now seen corresponding path program 2 times [2024-05-12 13:34:32,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:32,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136366521] [2024-05-12 13:34:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:32,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:32,721 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 13:34:32,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:32,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136366521] [2024-05-12 13:34:32,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136366521] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:32,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:32,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:32,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994219512] [2024-05-12 13:34:32,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:32,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:32,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:32,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:32,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:32,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 220 transitions, 2325 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 13:34:32,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:32,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:32,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:34,373 INFO L124 PetriNetUnfolderBase]: 6795/10280 cut-off events. [2024-05-12 13:34:34,374 INFO L125 PetriNetUnfolderBase]: For 112509/112524 co-relation queries the response was YES. [2024-05-12 13:34:34,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58792 conditions, 10280 events. 6795/10280 cut-off events. For 112509/112524 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 60821 event pairs, 1346 based on Foata normal form. 24/10058 useless extension candidates. Maximal degree in co-relation 58727. Up to 7488 conditions per place. [2024-05-12 13:34:34,454 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 212 selfloop transitions, 111 changer transitions 0/330 dead transitions. [2024-05-12 13:34:34,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 330 transitions, 4090 flow [2024-05-12 13:34:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-05-12 13:34:34,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-05-12 13:34:34,456 INFO L175 Difference]: Start difference. First operand has 132 places, 220 transitions, 2325 flow. Second operand 8 states and 202 transitions. [2024-05-12 13:34:34,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 330 transitions, 4090 flow [2024-05-12 13:34:34,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 330 transitions, 3812 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-05-12 13:34:34,650 INFO L231 Difference]: Finished difference. Result has 136 places, 268 transitions, 3114 flow [2024-05-12 13:34:34,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3114, PETRI_PLACES=136, PETRI_TRANSITIONS=268} [2024-05-12 13:34:34,650 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2024-05-12 13:34:34,650 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 268 transitions, 3114 flow [2024-05-12 13:34:34,651 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 13:34:34,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:34,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:34,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:34:34,651 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:34,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:34,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1920366449, now seen corresponding path program 3 times [2024-05-12 13:34:34,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:34,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555332688] [2024-05-12 13:34:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:35,290 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 13:34:35,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:35,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555332688] [2024-05-12 13:34:35,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555332688] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:35,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:35,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:35,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848391811] [2024-05-12 13:34:35,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:35,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:35,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:35,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 268 transitions, 3114 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 13:34:35,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:35,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:35,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:37,117 INFO L124 PetriNetUnfolderBase]: 7053/10626 cut-off events. [2024-05-12 13:34:37,117 INFO L125 PetriNetUnfolderBase]: For 141423/141440 co-relation queries the response was YES. [2024-05-12 13:34:37,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66500 conditions, 10626 events. 7053/10626 cut-off events. For 141423/141440 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 62836 event pairs, 1547 based on Foata normal form. 16/10396 useless extension candidates. Maximal degree in co-relation 66432. Up to 7641 conditions per place. [2024-05-12 13:34:37,200 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 221 selfloop transitions, 114 changer transitions 0/342 dead transitions. [2024-05-12 13:34:37,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 342 transitions, 4481 flow [2024-05-12 13:34:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 13:34:37,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:34:37,201 INFO L175 Difference]: Start difference. First operand has 136 places, 268 transitions, 3114 flow. Second operand 8 states and 200 transitions. [2024-05-12 13:34:37,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 342 transitions, 4481 flow [2024-05-12 13:34:37,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 342 transitions, 4331 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-05-12 13:34:37,464 INFO L231 Difference]: Finished difference. Result has 144 places, 284 transitions, 3589 flow [2024-05-12 13:34:37,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2978, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3589, PETRI_PLACES=144, PETRI_TRANSITIONS=284} [2024-05-12 13:34:37,464 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 91 predicate places. [2024-05-12 13:34:37,464 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 284 transitions, 3589 flow [2024-05-12 13:34:37,465 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 13:34:37,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:37,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:37,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:34:37,465 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:37,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:37,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2127562783, now seen corresponding path program 4 times [2024-05-12 13:34:37,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:37,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253839171] [2024-05-12 13:34:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:37,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:38,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:38,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253839171] [2024-05-12 13:34:38,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253839171] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:38,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:38,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:38,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670151421] [2024-05-12 13:34:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:38,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:38,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:38,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:38,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:38,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 284 transitions, 3589 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 13:34:38,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:38,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:38,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:40,084 INFO L124 PetriNetUnfolderBase]: 8052/12001 cut-off events. [2024-05-12 13:34:40,085 INFO L125 PetriNetUnfolderBase]: For 180565/180582 co-relation queries the response was YES. [2024-05-12 13:34:40,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79033 conditions, 12001 events. 8052/12001 cut-off events. For 180565/180582 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 70665 event pairs, 1604 based on Foata normal form. 26/11772 useless extension candidates. Maximal degree in co-relation 78960. Up to 9755 conditions per place. [2024-05-12 13:34:40,201 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 285 selfloop transitions, 93 changer transitions 0/385 dead transitions. [2024-05-12 13:34:40,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 385 transitions, 5310 flow [2024-05-12 13:34:40,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:34:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:34:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-05-12 13:34:40,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-05-12 13:34:40,203 INFO L175 Difference]: Start difference. First operand has 144 places, 284 transitions, 3589 flow. Second operand 9 states and 221 transitions. [2024-05-12 13:34:40,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 385 transitions, 5310 flow [2024-05-12 13:34:40,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 385 transitions, 5070 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-05-12 13:34:40,638 INFO L231 Difference]: Finished difference. Result has 152 places, 320 transitions, 4166 flow [2024-05-12 13:34:40,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4166, PETRI_PLACES=152, PETRI_TRANSITIONS=320} [2024-05-12 13:34:40,638 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-05-12 13:34:40,638 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 320 transitions, 4166 flow [2024-05-12 13:34:40,638 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 13:34:40,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:40,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:40,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:34:40,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:40,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2030091873, now seen corresponding path program 2 times [2024-05-12 13:34:40,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:40,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004457193] [2024-05-12 13:34:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:41,465 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 13:34:41,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:41,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004457193] [2024-05-12 13:34:41,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004457193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:41,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:41,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:41,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790752909] [2024-05-12 13:34:41,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:41,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:41,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:41,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:41,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:41,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 320 transitions, 4166 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 13:34:41,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:41,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:41,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:43,446 INFO L124 PetriNetUnfolderBase]: 8121/12091 cut-off events. [2024-05-12 13:34:43,446 INFO L125 PetriNetUnfolderBase]: For 207198/207215 co-relation queries the response was YES. [2024-05-12 13:34:43,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82977 conditions, 12091 events. 8121/12091 cut-off events. For 207198/207215 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 70910 event pairs, 1849 based on Foata normal form. 12/11849 useless extension candidates. Maximal degree in co-relation 82900. Up to 10733 conditions per place. [2024-05-12 13:34:43,541 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 337 selfloop transitions, 91 changer transitions 0/435 dead transitions. [2024-05-12 13:34:43,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 435 transitions, 6391 flow [2024-05-12 13:34:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:34:43,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-05-12 13:34:43,543 INFO L175 Difference]: Start difference. First operand has 152 places, 320 transitions, 4166 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:34:43,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 435 transitions, 6391 flow [2024-05-12 13:34:43,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 435 transitions, 6043 flow, removed 161 selfloop flow, removed 2 redundant places. [2024-05-12 13:34:43,988 INFO L231 Difference]: Finished difference. Result has 162 places, 379 transitions, 5163 flow [2024-05-12 13:34:43,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3941, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5163, PETRI_PLACES=162, PETRI_TRANSITIONS=379} [2024-05-12 13:34:43,988 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 109 predicate places. [2024-05-12 13:34:43,988 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 379 transitions, 5163 flow [2024-05-12 13:34:43,988 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 13:34:43,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:43,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:43,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:34:43,989 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:43,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:43,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2038366083, now seen corresponding path program 3 times [2024-05-12 13:34:43,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:43,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557594345] [2024-05-12 13:34:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:43,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:44,829 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 13:34:44,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:44,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557594345] [2024-05-12 13:34:44,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557594345] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:44,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:44,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:44,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609381764] [2024-05-12 13:34:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:44,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:44,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:44,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 379 transitions, 5163 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 13:34:44,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:44,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:44,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:46,850 INFO L124 PetriNetUnfolderBase]: 8091/12050 cut-off events. [2024-05-12 13:34:46,850 INFO L125 PetriNetUnfolderBase]: For 215479/215496 co-relation queries the response was YES. [2024-05-12 13:34:46,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83498 conditions, 12050 events. 8091/12050 cut-off events. For 215479/215496 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 70628 event pairs, 1739 based on Foata normal form. 21/11819 useless extension candidates. Maximal degree in co-relation 83415. Up to 10074 conditions per place. [2024-05-12 13:34:46,976 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 319 selfloop transitions, 128 changer transitions 0/454 dead transitions. [2024-05-12 13:34:46,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 454 transitions, 6680 flow [2024-05-12 13:34:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:34:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:34:46,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-05-12 13:34:46,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-05-12 13:34:46,978 INFO L175 Difference]: Start difference. First operand has 162 places, 379 transitions, 5163 flow. Second operand 9 states and 219 transitions. [2024-05-12 13:34:46,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 454 transitions, 6680 flow [2024-05-12 13:34:47,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 454 transitions, 6506 flow, removed 86 selfloop flow, removed 1 redundant places. [2024-05-12 13:34:47,489 INFO L231 Difference]: Finished difference. Result has 172 places, 396 transitions, 5567 flow [2024-05-12 13:34:47,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5567, PETRI_PLACES=172, PETRI_TRANSITIONS=396} [2024-05-12 13:34:47,489 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-05-12 13:34:47,489 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 396 transitions, 5567 flow [2024-05-12 13:34:47,490 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 13:34:47,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:47,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:47,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:34:47,490 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:47,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2038372841, now seen corresponding path program 5 times [2024-05-12 13:34:47,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:47,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025316019] [2024-05-12 13:34:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:47,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:48,229 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 13:34:48,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:48,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025316019] [2024-05-12 13:34:48,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025316019] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:48,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:48,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226413794] [2024-05-12 13:34:48,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:48,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:48,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 396 transitions, 5567 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 13:34:48,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:48,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:48,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:50,665 INFO L124 PetriNetUnfolderBase]: 8133/12104 cut-off events. [2024-05-12 13:34:50,665 INFO L125 PetriNetUnfolderBase]: For 224345/224362 co-relation queries the response was YES. [2024-05-12 13:34:50,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85189 conditions, 12104 events. 8133/12104 cut-off events. For 224345/224362 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 70892 event pairs, 1782 based on Foata normal form. 16/11868 useless extension candidates. Maximal degree in co-relation 85101. Up to 9873 conditions per place. [2024-05-12 13:34:50,800 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 324 selfloop transitions, 148 changer transitions 0/479 dead transitions. [2024-05-12 13:34:50,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 479 transitions, 7207 flow [2024-05-12 13:34:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:34:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:34:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-05-12 13:34:50,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-05-12 13:34:50,802 INFO L175 Difference]: Start difference. First operand has 172 places, 396 transitions, 5567 flow. Second operand 10 states and 245 transitions. [2024-05-12 13:34:50,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 479 transitions, 7207 flow [2024-05-12 13:34:51,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 479 transitions, 6798 flow, removed 139 selfloop flow, removed 5 redundant places. [2024-05-12 13:34:51,557 INFO L231 Difference]: Finished difference. Result has 180 places, 414 transitions, 5909 flow [2024-05-12 13:34:51,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5240, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5909, PETRI_PLACES=180, PETRI_TRANSITIONS=414} [2024-05-12 13:34:51,558 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-05-12 13:34:51,558 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 414 transitions, 5909 flow [2024-05-12 13:34:51,558 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 13:34:51,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:51,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:51,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:34:51,558 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:51,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:51,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2030092121, now seen corresponding path program 6 times [2024-05-12 13:34:51,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:51,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725514314] [2024-05-12 13:34:51,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:51,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:52,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:52,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725514314] [2024-05-12 13:34:52,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725514314] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:52,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:52,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:52,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131042323] [2024-05-12 13:34:52,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:52,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:52,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:52,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:52,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 414 transitions, 5909 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 13:34:52,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:52,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:54,398 INFO L124 PetriNetUnfolderBase]: 8113/12078 cut-off events. [2024-05-12 13:34:54,398 INFO L125 PetriNetUnfolderBase]: For 223352/223369 co-relation queries the response was YES. [2024-05-12 13:34:54,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85981 conditions, 12078 events. 8113/12078 cut-off events. For 223352/223369 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 70796 event pairs, 1788 based on Foata normal form. 14/11838 useless extension candidates. Maximal degree in co-relation 85889. Up to 10428 conditions per place. [2024-05-12 13:34:54,511 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 368 selfloop transitions, 121 changer transitions 0/496 dead transitions. [2024-05-12 13:34:54,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 496 transitions, 7734 flow [2024-05-12 13:34:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:34:54,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:34:54,513 INFO L175 Difference]: Start difference. First operand has 180 places, 414 transitions, 5909 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:34:54,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 496 transitions, 7734 flow [2024-05-12 13:34:54,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 496 transitions, 7395 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-05-12 13:34:55,006 INFO L231 Difference]: Finished difference. Result has 185 places, 440 transitions, 6351 flow [2024-05-12 13:34:55,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5602, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6351, PETRI_PLACES=185, PETRI_TRANSITIONS=440} [2024-05-12 13:34:55,007 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 132 predicate places. [2024-05-12 13:34:55,007 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 440 transitions, 6351 flow [2024-05-12 13:34:55,008 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 13:34:55,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:55,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:55,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:34:55,008 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:55,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:55,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2029795203, now seen corresponding path program 4 times [2024-05-12 13:34:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361677805] [2024-05-12 13:34:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:55,774 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 13:34:55,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361677805] [2024-05-12 13:34:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361677805] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:55,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:55,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:34:55,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845560024] [2024-05-12 13:34:55,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:55,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:34:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:34:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:34:55,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:55,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 440 transitions, 6351 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 13:34:55,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:55,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:55,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:58,009 INFO L124 PetriNetUnfolderBase]: 8102/12055 cut-off events. [2024-05-12 13:34:58,009 INFO L125 PetriNetUnfolderBase]: For 235964/235981 co-relation queries the response was YES. [2024-05-12 13:34:58,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87222 conditions, 12055 events. 8102/12055 cut-off events. For 235964/235981 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 70692 event pairs, 1773 based on Foata normal form. 8/11811 useless extension candidates. Maximal degree in co-relation 87127. Up to 10516 conditions per place. [2024-05-12 13:34:58,132 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 368 selfloop transitions, 122 changer transitions 0/497 dead transitions. [2024-05-12 13:34:58,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 497 transitions, 7834 flow [2024-05-12 13:34:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:34:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:34:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:34:58,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-05-12 13:34:58,133 INFO L175 Difference]: Start difference. First operand has 185 places, 440 transitions, 6351 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:34:58,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 497 transitions, 7834 flow [2024-05-12 13:34:58,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 497 transitions, 7640 flow, removed 88 selfloop flow, removed 2 redundant places. [2024-05-12 13:34:58,761 INFO L231 Difference]: Finished difference. Result has 192 places, 444 transitions, 6539 flow [2024-05-12 13:34:58,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6175, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6539, PETRI_PLACES=192, PETRI_TRANSITIONS=444} [2024-05-12 13:34:58,762 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-05-12 13:34:58,762 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 444 transitions, 6539 flow [2024-05-12 13:34:58,762 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 13:34:58,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:58,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:58,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:34:58,763 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:34:58,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:58,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2070943978, now seen corresponding path program 1 times [2024-05-12 13:34:58,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:58,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350475528] [2024-05-12 13:34:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:58,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:59,419 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 13:34:59,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:59,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350475528] [2024-05-12 13:34:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350475528] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:59,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:59,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:34:59,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312378035] [2024-05-12 13:34:59,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:34:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:34:59,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:34:59,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:59,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 444 transitions, 6539 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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 13:34:59,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:59,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:59,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:01,612 INFO L124 PetriNetUnfolderBase]: 8100/12063 cut-off events. [2024-05-12 13:35:01,612 INFO L125 PetriNetUnfolderBase]: For 245088/245105 co-relation queries the response was YES. [2024-05-12 13:35:01,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87980 conditions, 12063 events. 8100/12063 cut-off events. For 245088/245105 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 70805 event pairs, 2174 based on Foata normal form. 16/11823 useless extension candidates. Maximal degree in co-relation 87882. Up to 11170 conditions per place. [2024-05-12 13:35:01,745 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 436 selfloop transitions, 27 changer transitions 0/470 dead transitions. [2024-05-12 13:35:01,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 470 transitions, 7698 flow [2024-05-12 13:35:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:35:01,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:35:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-05-12 13:35:01,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-05-12 13:35:01,746 INFO L175 Difference]: Start difference. First operand has 192 places, 444 transitions, 6539 flow. Second operand 5 states and 112 transitions. [2024-05-12 13:35:01,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 470 transitions, 7698 flow [2024-05-12 13:35:02,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 470 transitions, 7455 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 13:35:02,409 INFO L231 Difference]: Finished difference. Result has 192 places, 450 transitions, 6483 flow [2024-05-12 13:35:02,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6298, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6483, PETRI_PLACES=192, PETRI_TRANSITIONS=450} [2024-05-12 13:35:02,410 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-05-12 13:35:02,410 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 450 transitions, 6483 flow [2024-05-12 13:35:02,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 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 13:35:02,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:02,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:02,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:35:02,410 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:02,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:02,411 INFO L85 PathProgramCache]: Analyzing trace with hash -713096165, now seen corresponding path program 1 times [2024-05-12 13:35:02,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:02,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288009279] [2024-05-12 13:35:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:02,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:03,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:03,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288009279] [2024-05-12 13:35:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288009279] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:03,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043809243] [2024-05-12 13:35:03,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:03,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:03,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:35:03,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 450 transitions, 6483 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:03,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:03,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:35:03,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:05,558 INFO L124 PetriNetUnfolderBase]: 7948/11831 cut-off events. [2024-05-12 13:35:05,558 INFO L125 PetriNetUnfolderBase]: For 259061/259496 co-relation queries the response was YES. [2024-05-12 13:35:05,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88078 conditions, 11831 events. 7948/11831 cut-off events. For 259061/259496 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 69367 event pairs, 1634 based on Foata normal form. 71/11471 useless extension candidates. Maximal degree in co-relation 87979. Up to 10676 conditions per place. [2024-05-12 13:35:05,698 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 402 selfloop transitions, 44 changer transitions 0/500 dead transitions. [2024-05-12 13:35:05,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 500 transitions, 7698 flow [2024-05-12 13:35:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:35:05,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-05-12 13:35:05,699 INFO L175 Difference]: Start difference. First operand has 192 places, 450 transitions, 6483 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:35:05,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 500 transitions, 7698 flow [2024-05-12 13:35:06,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 500 transitions, 7598 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-05-12 13:35:06,394 INFO L231 Difference]: Finished difference. Result has 198 places, 465 transitions, 6725 flow [2024-05-12 13:35:06,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6383, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6725, PETRI_PLACES=198, PETRI_TRANSITIONS=465} [2024-05-12 13:35:06,395 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-05-12 13:35:06,395 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 465 transitions, 6725 flow [2024-05-12 13:35:06,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:06,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:06,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:06,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:35:06,396 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:06,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:06,396 INFO L85 PathProgramCache]: Analyzing trace with hash -710353440, now seen corresponding path program 1 times [2024-05-12 13:35:06,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:06,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233889341] [2024-05-12 13:35:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:06,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:07,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:07,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233889341] [2024-05-12 13:35:07,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233889341] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:07,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:07,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:07,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410719505] [2024-05-12 13:35:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:07,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:07,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:07,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:07,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:07,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 465 transitions, 6725 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 13:35:07,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:07,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:07,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:09,727 INFO L124 PetriNetUnfolderBase]: 8246/12277 cut-off events. [2024-05-12 13:35:09,727 INFO L125 PetriNetUnfolderBase]: For 275092/275112 co-relation queries the response was YES. [2024-05-12 13:35:09,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92232 conditions, 12277 events. 8246/12277 cut-off events. For 275092/275112 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 72252 event pairs, 1903 based on Foata normal form. 19/12036 useless extension candidates. Maximal degree in co-relation 92130. Up to 10824 conditions per place. [2024-05-12 13:35:09,869 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 437 selfloop transitions, 101 changer transitions 0/545 dead transitions. [2024-05-12 13:35:09,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 545 transitions, 8727 flow [2024-05-12 13:35:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-05-12 13:35:09,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-05-12 13:35:09,871 INFO L175 Difference]: Start difference. First operand has 198 places, 465 transitions, 6725 flow. Second operand 9 states and 215 transitions. [2024-05-12 13:35:09,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 545 transitions, 8727 flow [2024-05-12 13:35:10,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 545 transitions, 8616 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-05-12 13:35:10,611 INFO L231 Difference]: Finished difference. Result has 207 places, 492 transitions, 7473 flow [2024-05-12 13:35:10,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6624, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7473, PETRI_PLACES=207, PETRI_TRANSITIONS=492} [2024-05-12 13:35:10,612 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 154 predicate places. [2024-05-12 13:35:10,612 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 492 transitions, 7473 flow [2024-05-12 13:35:10,612 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 13:35:10,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:10,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:10,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:35:10,613 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:10,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash -713034785, now seen corresponding path program 2 times [2024-05-12 13:35:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991325388] [2024-05-12 13:35:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:11,537 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 13:35:11,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:11,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991325388] [2024-05-12 13:35:11,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991325388] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:11,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:11,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:11,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39911046] [2024-05-12 13:35:11,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:11,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:11,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:11,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:11,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:11,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:35:11,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 492 transitions, 7473 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:11,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:11,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:35:11,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:13,915 INFO L124 PetriNetUnfolderBase]: 8049/11996 cut-off events. [2024-05-12 13:35:13,915 INFO L125 PetriNetUnfolderBase]: For 296545/297094 co-relation queries the response was YES. [2024-05-12 13:35:13,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93907 conditions, 11996 events. 8049/11996 cut-off events. For 296545/297094 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 70649 event pairs, 1856 based on Foata normal form. 64/11621 useless extension candidates. Maximal degree in co-relation 93801. Up to 10763 conditions per place. [2024-05-12 13:35:14,043 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 411 selfloop transitions, 64 changer transitions 0/531 dead transitions. [2024-05-12 13:35:14,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 531 transitions, 8641 flow [2024-05-12 13:35:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-05-12 13:35:14,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-05-12 13:35:14,045 INFO L175 Difference]: Start difference. First operand has 207 places, 492 transitions, 7473 flow. Second operand 7 states and 164 transitions. [2024-05-12 13:35:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 531 transitions, 8641 flow [2024-05-12 13:35:14,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 531 transitions, 8448 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-05-12 13:35:14,902 INFO L231 Difference]: Finished difference. Result has 211 places, 495 transitions, 7505 flow [2024-05-12 13:35:14,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7280, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7505, PETRI_PLACES=211, PETRI_TRANSITIONS=495} [2024-05-12 13:35:14,902 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-05-12 13:35:14,902 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 495 transitions, 7505 flow [2024-05-12 13:35:14,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:14,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:14,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:14,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:35:14,903 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:14,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:14,903 INFO L85 PathProgramCache]: Analyzing trace with hash -603543495, now seen corresponding path program 1 times [2024-05-12 13:35:14,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653635623] [2024-05-12 13:35:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:15,737 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 13:35:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653635623] [2024-05-12 13:35:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653635623] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:15,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149001486] [2024-05-12 13:35:15,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:15,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:15,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:15,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:15,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:15,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:15,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 495 transitions, 7505 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 13:35:15,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:15,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:15,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:18,395 INFO L124 PetriNetUnfolderBase]: 8445/12555 cut-off events. [2024-05-12 13:35:18,395 INFO L125 PetriNetUnfolderBase]: For 314105/314127 co-relation queries the response was YES. [2024-05-12 13:35:18,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97981 conditions, 12555 events. 8445/12555 cut-off events. For 314105/314127 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 73930 event pairs, 1987 based on Foata normal form. 26/12321 useless extension candidates. Maximal degree in co-relation 97873. Up to 11102 conditions per place. [2024-05-12 13:35:18,520 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 470 selfloop transitions, 88 changer transitions 0/565 dead transitions. [2024-05-12 13:35:18,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 565 transitions, 9250 flow [2024-05-12 13:35:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:35:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:35:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-05-12 13:35:18,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-05-12 13:35:18,522 INFO L175 Difference]: Start difference. First operand has 211 places, 495 transitions, 7505 flow. Second operand 10 states and 238 transitions. [2024-05-12 13:35:18,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 565 transitions, 9250 flow [2024-05-12 13:35:19,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 565 transitions, 9085 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-05-12 13:35:19,202 INFO L231 Difference]: Finished difference. Result has 216 places, 504 transitions, 7735 flow [2024-05-12 13:35:19,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7342, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7735, PETRI_PLACES=216, PETRI_TRANSITIONS=504} [2024-05-12 13:35:19,203 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-05-12 13:35:19,203 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 504 transitions, 7735 flow [2024-05-12 13:35:19,203 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 13:35:19,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:19,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:19,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:35:19,203 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:19,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:19,204 INFO L85 PathProgramCache]: Analyzing trace with hash -593816783, now seen corresponding path program 2 times [2024-05-12 13:35:19,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:19,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153038848] [2024-05-12 13:35:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:19,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153038848] [2024-05-12 13:35:19,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153038848] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:19,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:19,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:19,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820704294] [2024-05-12 13:35:19,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:19,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:19,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:19,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:19,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:20,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:20,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 504 transitions, 7735 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:20,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:20,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:20,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:22,601 INFO L124 PetriNetUnfolderBase]: 8423/12512 cut-off events. [2024-05-12 13:35:22,601 INFO L125 PetriNetUnfolderBase]: For 313013/313033 co-relation queries the response was YES. [2024-05-12 13:35:22,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98163 conditions, 12512 events. 8423/12512 cut-off events. For 313013/313033 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 73675 event pairs, 1643 based on Foata normal form. 19/12277 useless extension candidates. Maximal degree in co-relation 98054. Up to 9779 conditions per place. [2024-05-12 13:35:22,728 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 356 selfloop transitions, 215 changer transitions 0/578 dead transitions. [2024-05-12 13:35:22,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 578 transitions, 9722 flow [2024-05-12 13:35:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 13:35:22,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:35:22,730 INFO L175 Difference]: Start difference. First operand has 216 places, 504 transitions, 7735 flow. Second operand 8 states and 200 transitions. [2024-05-12 13:35:22,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 578 transitions, 9722 flow [2024-05-12 13:35:23,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 578 transitions, 9439 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-05-12 13:35:23,574 INFO L231 Difference]: Finished difference. Result has 218 places, 525 transitions, 8505 flow [2024-05-12 13:35:23,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7452, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8505, PETRI_PLACES=218, PETRI_TRANSITIONS=525} [2024-05-12 13:35:23,575 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 165 predicate places. [2024-05-12 13:35:23,575 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 525 transitions, 8505 flow [2024-05-12 13:35:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:23,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:23,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:23,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:35:23,576 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:23,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -593809064, now seen corresponding path program 1 times [2024-05-12 13:35:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:23,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867070332] [2024-05-12 13:35:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:23,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:24,486 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 13:35:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:24,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867070332] [2024-05-12 13:35:24,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867070332] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:24,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:24,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051538920] [2024-05-12 13:35:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:24,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:24,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:24,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:24,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 525 transitions, 8505 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 13:35:24,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:24,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:24,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:27,360 INFO L124 PetriNetUnfolderBase]: 8931/13254 cut-off events. [2024-05-12 13:35:27,360 INFO L125 PetriNetUnfolderBase]: For 371323/371343 co-relation queries the response was YES. [2024-05-12 13:35:27,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108223 conditions, 13254 events. 8931/13254 cut-off events. For 371323/371343 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 78578 event pairs, 1739 based on Foata normal form. 46/13046 useless extension candidates. Maximal degree in co-relation 108111. Up to 11429 conditions per place. [2024-05-12 13:35:27,492 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 489 selfloop transitions, 97 changer transitions 0/593 dead transitions. [2024-05-12 13:35:27,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 593 transitions, 10335 flow [2024-05-12 13:35:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:27,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-05-12 13:35:27,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-05-12 13:35:27,493 INFO L175 Difference]: Start difference. First operand has 218 places, 525 transitions, 8505 flow. Second operand 9 states and 217 transitions. [2024-05-12 13:35:27,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 593 transitions, 10335 flow [2024-05-12 13:35:28,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 593 transitions, 10201 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-05-12 13:35:28,503 INFO L231 Difference]: Finished difference. Result has 224 places, 530 transitions, 8744 flow [2024-05-12 13:35:28,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8373, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8744, PETRI_PLACES=224, PETRI_TRANSITIONS=530} [2024-05-12 13:35:28,504 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-05-12 13:35:28,504 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 530 transitions, 8744 flow [2024-05-12 13:35:28,504 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 13:35:28,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:28,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:28,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:35:28,505 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:28,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash -598187067, now seen corresponding path program 3 times [2024-05-12 13:35:28,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:28,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162491446] [2024-05-12 13:35:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:28,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:29,464 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 13:35:29,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:29,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162491446] [2024-05-12 13:35:29,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162491446] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:29,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:29,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:29,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327415027] [2024-05-12 13:35:29,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:29,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:29,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:29,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:29,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:29,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:35:29,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 530 transitions, 8744 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:29,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:29,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:35:29,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:32,396 INFO L124 PetriNetUnfolderBase]: 8665/12892 cut-off events. [2024-05-12 13:35:32,396 INFO L125 PetriNetUnfolderBase]: For 370262/370577 co-relation queries the response was YES. [2024-05-12 13:35:32,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107868 conditions, 12892 events. 8665/12892 cut-off events. For 370262/370577 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 76764 event pairs, 1648 based on Foata normal form. 32/12509 useless extension candidates. Maximal degree in co-relation 107754. Up to 11430 conditions per place. [2024-05-12 13:35:32,563 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 402 selfloop transitions, 108 changer transitions 0/568 dead transitions. [2024-05-12 13:35:32,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 568 transitions, 10008 flow [2024-05-12 13:35:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:35:32,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-05-12 13:35:32,565 INFO L175 Difference]: Start difference. First operand has 224 places, 530 transitions, 8744 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:35:32,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 568 transitions, 10008 flow [2024-05-12 13:35:33,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 568 transitions, 9781 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-05-12 13:35:33,562 INFO L231 Difference]: Finished difference. Result has 225 places, 533 transitions, 8837 flow [2024-05-12 13:35:33,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8517, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8837, PETRI_PLACES=225, PETRI_TRANSITIONS=533} [2024-05-12 13:35:33,562 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-05-12 13:35:33,562 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 533 transitions, 8837 flow [2024-05-12 13:35:33,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:33,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:33,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:33,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:35:33,563 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:33,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1491662518, now seen corresponding path program 2 times [2024-05-12 13:35:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:33,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51264574] [2024-05-12 13:35:33,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:33,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:34,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:34,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51264574] [2024-05-12 13:35:34,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51264574] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:34,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:34,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:34,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13640085] [2024-05-12 13:35:34,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:34,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:34,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:34,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:34,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:34,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:34,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 533 transitions, 8837 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 13:35:34,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:34,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:34,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:37,371 INFO L124 PetriNetUnfolderBase]: 9116/13535 cut-off events. [2024-05-12 13:35:37,371 INFO L125 PetriNetUnfolderBase]: For 387821/387841 co-relation queries the response was YES. [2024-05-12 13:35:37,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110377 conditions, 13535 events. 9116/13535 cut-off events. For 387821/387841 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 80624 event pairs, 1888 based on Foata normal form. 31/13312 useless extension candidates. Maximal degree in co-relation 110262. Up to 11967 conditions per place. [2024-05-12 13:35:37,566 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 479 selfloop transitions, 112 changer transitions 0/598 dead transitions. [2024-05-12 13:35:37,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 598 transitions, 10474 flow [2024-05-12 13:35:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:37,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-05-12 13:35:37,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-05-12 13:35:37,568 INFO L175 Difference]: Start difference. First operand has 225 places, 533 transitions, 8837 flow. Second operand 9 states and 211 transitions. [2024-05-12 13:35:37,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 598 transitions, 10474 flow [2024-05-12 13:35:38,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 598 transitions, 10237 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-05-12 13:35:38,747 INFO L231 Difference]: Finished difference. Result has 230 places, 536 transitions, 8941 flow [2024-05-12 13:35:38,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8602, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8941, PETRI_PLACES=230, PETRI_TRANSITIONS=536} [2024-05-12 13:35:38,748 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-05-12 13:35:38,748 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 536 transitions, 8941 flow [2024-05-12 13:35:38,748 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 13:35:38,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:38,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:38,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:35:38,748 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:38,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:38,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1500859288, now seen corresponding path program 3 times [2024-05-12 13:35:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:38,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119718887] [2024-05-12 13:35:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:39,786 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 13:35:39,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:39,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119718887] [2024-05-12 13:35:39,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119718887] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:39,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970687224] [2024-05-12 13:35:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:39,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:39,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:39,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:39,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 536 transitions, 8941 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 13:35:39,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:39,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:39,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:42,719 INFO L124 PetriNetUnfolderBase]: 9150/13585 cut-off events. [2024-05-12 13:35:42,720 INFO L125 PetriNetUnfolderBase]: For 397321/397341 co-relation queries the response was YES. [2024-05-12 13:35:42,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111849 conditions, 13585 events. 9150/13585 cut-off events. For 397321/397341 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 80894 event pairs, 1892 based on Foata normal form. 11/13342 useless extension candidates. Maximal degree in co-relation 111733. Up to 11995 conditions per place. [2024-05-12 13:35:42,875 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 449 selfloop transitions, 140 changer transitions 0/596 dead transitions. [2024-05-12 13:35:42,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 596 transitions, 10530 flow [2024-05-12 13:35:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-05-12 13:35:42,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-05-12 13:35:42,877 INFO L175 Difference]: Start difference. First operand has 230 places, 536 transitions, 8941 flow. Second operand 9 states and 206 transitions. [2024-05-12 13:35:42,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 596 transitions, 10530 flow [2024-05-12 13:35:44,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 596 transitions, 10245 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-05-12 13:35:44,128 INFO L231 Difference]: Finished difference. Result has 232 places, 539 transitions, 9056 flow [2024-05-12 13:35:44,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8656, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9056, PETRI_PLACES=232, PETRI_TRANSITIONS=539} [2024-05-12 13:35:44,128 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 179 predicate places. [2024-05-12 13:35:44,128 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 539 transitions, 9056 flow [2024-05-12 13:35:44,128 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 13:35:44,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:44,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:44,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:35:44,129 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:44,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:44,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1501185718, now seen corresponding path program 4 times [2024-05-12 13:35:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:44,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159123441] [2024-05-12 13:35:44,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:44,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:45,179 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 13:35:45,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:45,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159123441] [2024-05-12 13:35:45,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159123441] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:45,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:45,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:45,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14514350] [2024-05-12 13:35:45,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:45,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:45,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:45,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:45,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 539 transitions, 9056 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 13:35:45,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:45,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:45,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:48,449 INFO L124 PetriNetUnfolderBase]: 9374/13925 cut-off events. [2024-05-12 13:35:48,449 INFO L125 PetriNetUnfolderBase]: For 430022/430042 co-relation queries the response was YES. [2024-05-12 13:35:48,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115461 conditions, 13925 events. 9374/13925 cut-off events. For 430022/430042 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 83253 event pairs, 1728 based on Foata normal form. 11/13682 useless extension candidates. Maximal degree in co-relation 115344. Up to 11676 conditions per place. [2024-05-12 13:35:48,596 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 454 selfloop transitions, 154 changer transitions 0/615 dead transitions. [2024-05-12 13:35:48,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 615 transitions, 11069 flow [2024-05-12 13:35:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:35:48,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:35:48,598 INFO L175 Difference]: Start difference. First operand has 232 places, 539 transitions, 9056 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:35:48,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 615 transitions, 11069 flow [2024-05-12 13:35:49,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 615 transitions, 10693 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-05-12 13:35:49,795 INFO L231 Difference]: Finished difference. Result has 235 places, 551 transitions, 9357 flow [2024-05-12 13:35:49,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8680, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9357, PETRI_PLACES=235, PETRI_TRANSITIONS=551} [2024-05-12 13:35:49,795 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 182 predicate places. [2024-05-12 13:35:49,795 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 551 transitions, 9357 flow [2024-05-12 13:35:49,796 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 13:35:49,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:49,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:49,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:35:49,796 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:49,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:49,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1235162008, now seen corresponding path program 5 times [2024-05-12 13:35:49,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289395615] [2024-05-12 13:35:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289395615] [2024-05-12 13:35:50,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289395615] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:50,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:50,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:50,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114156971] [2024-05-12 13:35:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:50,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:50,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:50,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:50,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:50,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 551 transitions, 9357 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 13:35:50,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:50,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:50,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:54,546 INFO L124 PetriNetUnfolderBase]: 10301/15318 cut-off events. [2024-05-12 13:35:54,546 INFO L125 PetriNetUnfolderBase]: For 544125/544145 co-relation queries the response was YES. [2024-05-12 13:35:54,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127071 conditions, 15318 events. 10301/15318 cut-off events. For 544125/544145 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 93691 event pairs, 1900 based on Foata normal form. 97/15161 useless extension candidates. Maximal degree in co-relation 126952. Up to 12078 conditions per place. [2024-05-12 13:35:54,739 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 456 selfloop transitions, 162 changer transitions 0/625 dead transitions. [2024-05-12 13:35:54,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 625 transitions, 11270 flow [2024-05-12 13:35:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:35:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:35:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-05-12 13:35:54,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-05-12 13:35:54,741 INFO L175 Difference]: Start difference. First operand has 235 places, 551 transitions, 9357 flow. Second operand 10 states and 246 transitions. [2024-05-12 13:35:54,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 625 transitions, 11270 flow [2024-05-12 13:35:56,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 625 transitions, 10930 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-05-12 13:35:56,393 INFO L231 Difference]: Finished difference. Result has 241 places, 557 transitions, 9601 flow [2024-05-12 13:35:56,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9049, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9601, PETRI_PLACES=241, PETRI_TRANSITIONS=557} [2024-05-12 13:35:56,394 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 188 predicate places. [2024-05-12 13:35:56,394 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 557 transitions, 9601 flow [2024-05-12 13:35:56,394 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 13:35:56,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:56,394 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 13:35:56,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:35:56,394 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:56,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash 113558942, now seen corresponding path program 1 times [2024-05-12 13:35:56,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:56,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505177774] [2024-05-12 13:35:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:56,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:57,358 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 13:35:57,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505177774] [2024-05-12 13:35:57,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505177774] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:57,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:57,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:35:57,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969940405] [2024-05-12 13:35:57,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:57,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:35:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:57,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:35:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:35:57,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:57,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 557 transitions, 9601 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 13:35:57,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:57,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:57,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:01,339 INFO L124 PetriNetUnfolderBase]: 11030/16224 cut-off events. [2024-05-12 13:36:01,339 INFO L125 PetriNetUnfolderBase]: For 558410/558430 co-relation queries the response was YES. [2024-05-12 13:36:01,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137176 conditions, 16224 events. 11030/16224 cut-off events. For 558410/558430 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 98962 event pairs, 2324 based on Foata normal form. 32/16047 useless extension candidates. Maximal degree in co-relation 137054. Up to 14412 conditions per place. [2024-05-12 13:36:01,549 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 572 selfloop transitions, 75 changer transitions 0/654 dead transitions. [2024-05-12 13:36:01,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 654 transitions, 12018 flow [2024-05-12 13:36:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:36:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:36:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-05-12 13:36:01,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-05-12 13:36:01,550 INFO L175 Difference]: Start difference. First operand has 241 places, 557 transitions, 9601 flow. Second operand 10 states and 242 transitions. [2024-05-12 13:36:01,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 654 transitions, 12018 flow [2024-05-12 13:36:03,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 654 transitions, 11597 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-05-12 13:36:03,426 INFO L231 Difference]: Finished difference. Result has 245 places, 579 transitions, 9871 flow [2024-05-12 13:36:03,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9180, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9871, PETRI_PLACES=245, PETRI_TRANSITIONS=579} [2024-05-12 13:36:03,427 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-05-12 13:36:03,427 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 579 transitions, 9871 flow [2024-05-12 13:36:03,428 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 13:36:03,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:03,428 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 13:36:03,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:36:03,428 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:03,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -629240776, now seen corresponding path program 2 times [2024-05-12 13:36:03,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:03,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038181347] [2024-05-12 13:36:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:03,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:04,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:04,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038181347] [2024-05-12 13:36:04,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038181347] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:04,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:04,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659662288] [2024-05-12 13:36:04,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:04,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:04,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:04,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:04,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:04,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 579 transitions, 9871 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 13:36:04,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:04,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:04,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:08,935 INFO L124 PetriNetUnfolderBase]: 11678/17111 cut-off events. [2024-05-12 13:36:08,935 INFO L125 PetriNetUnfolderBase]: For 622285/622305 co-relation queries the response was YES. [2024-05-12 13:36:09,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147925 conditions, 17111 events. 11678/17111 cut-off events. For 622285/622305 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 104959 event pairs, 2788 based on Foata normal form. 32/16949 useless extension candidates. Maximal degree in co-relation 147800. Up to 14846 conditions per place. [2024-05-12 13:36:09,128 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 554 selfloop transitions, 115 changer transitions 0/676 dead transitions. [2024-05-12 13:36:09,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 676 transitions, 12635 flow [2024-05-12 13:36:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:36:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:36:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-05-12 13:36:09,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-05-12 13:36:09,130 INFO L175 Difference]: Start difference. First operand has 245 places, 579 transitions, 9871 flow. Second operand 10 states and 242 transitions. [2024-05-12 13:36:09,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 676 transitions, 12635 flow [2024-05-12 13:36:11,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 676 transitions, 12390 flow, removed 103 selfloop flow, removed 3 redundant places. [2024-05-12 13:36:11,154 INFO L231 Difference]: Finished difference. Result has 254 places, 599 transitions, 10584 flow [2024-05-12 13:36:11,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9626, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10584, PETRI_PLACES=254, PETRI_TRANSITIONS=599} [2024-05-12 13:36:11,155 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 201 predicate places. [2024-05-12 13:36:11,155 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 599 transitions, 10584 flow [2024-05-12 13:36:11,155 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 13:36:11,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:11,155 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 13:36:11,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:36:11,156 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:11,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:11,156 INFO L85 PathProgramCache]: Analyzing trace with hash -629236126, now seen corresponding path program 3 times [2024-05-12 13:36:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:11,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738929153] [2024-05-12 13:36:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:11,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:12,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:12,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738929153] [2024-05-12 13:36:12,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738929153] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:12,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:12,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:12,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209442191] [2024-05-12 13:36:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:12,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:12,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:12,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 599 transitions, 10584 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 13:36:12,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:12,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:12,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand