./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix056_power.oepc_pso.oepc_rmo.oepc.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/mix056_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-07_14-17-48.files/protection/mix056_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:28:31,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:28:31,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:28:31,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:28:31,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:28:31,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:28:31,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:28:31,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:28:31,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:28:31,912 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:28:31,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:28:31,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:28:31,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:28:31,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:28:31,915 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:28:31,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:28:31,915 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:28:31,915 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:28:31,915 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:28:31,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:28:31,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:28:31,916 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:28:31,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:28:31,917 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:28:31,917 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:28:31,917 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:28:31,917 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:28:31,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:28:31,918 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:28:31,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:28:31,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:28:31,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:28:31,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:28:31,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:28:31,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:28:31,920 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:28:31,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:28:31,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:28:31,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:28:31,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:28:31,921 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:28:31,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:28:31,921 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:28:31,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:28:32,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:28:32,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:28:32,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:28:32,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:28:32,130 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:28:32,131 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:28:33,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:28:33,276 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:28:33,276 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:28:33,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74f47184/b5890886ef4946229d0f7ea7a0efd7e3/FLAG3454f6d42 [2024-05-12 13:28:33,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74f47184/b5890886ef4946229d0f7ea7a0efd7e3 [2024-05-12 13:28:33,313 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:28:33,314 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:28:33,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix056_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-05-12 13:28:33,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:28:33,476 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:28:33,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:28:33,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:28:33,487 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:28:33,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:28:33" (1/2) ... [2024-05-12 13:28:33,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321c067b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:28:33, skipping insertion in model container [2024-05-12 13:28:33,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:28:33" (1/2) ... [2024-05-12 13:28:33,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@bd30e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:28:33, skipping insertion in model container [2024-05-12 13:28:33,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:33" (2/2) ... [2024-05-12 13:28:33,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321c067b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:33, skipping insertion in model container [2024-05-12 13:28:33,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:33" (2/2) ... [2024-05-12 13:28:33,490 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:28:33,614 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:28:33,615 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:28:33,615 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:28:33,616 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-05-12 13:28:33,616 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:28:33,616 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-05-12 13:28:33,653 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:28:33,789 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/mix056_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-05-12 13:28:33,955 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:28:33,965 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:28:33,995 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/mix056_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:28:34,066 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:28:34,101 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:28:34,120 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34 WrapperNode [2024-05-12 13:28:34,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:28:34,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:28:34,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:28:34,122 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:28:34,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,143 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,167 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2024-05-12 13:28:34,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:28:34,168 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:28:34,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:28:34,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:28:34,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,192 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 13:28:34,192 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:28:34,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:28:34,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:28:34,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:28:34,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (1/1) ... [2024-05-12 13:28:34,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:28:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:28:34,245 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 13:28:34,300 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 13:28:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:28:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:28:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:28:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:28:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:28:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:28:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:28:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:28:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:28:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:28:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:28:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:28:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:28:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:28:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:28:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:28:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:28:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:28:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:28:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:28:34,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:28:34,318 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 13:28:34,452 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:28:34,453 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:28:34,799 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:28:34,799 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:28:34,942 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:28:34,942 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:28:34,944 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:28:34 BoogieIcfgContainer [2024-05-12 13:28:34,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:28:34,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:28:34,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:28:34,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:28:34,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:28:33" (1/4) ... [2024-05-12 13:28:34,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2fdfe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:28:34, skipping insertion in model container [2024-05-12 13:28:34,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:28:33" (2/4) ... [2024-05-12 13:28:34,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2fdfe3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:28:34, skipping insertion in model container [2024-05-12 13:28:34,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:28:34" (3/4) ... [2024-05-12 13:28:34,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2fdfe3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:28:34, skipping insertion in model container [2024-05-12 13:28:34,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:28:34" (4/4) ... [2024-05-12 13:28:34,951 INFO L112 eAbstractionObserver]: Analyzing ICFG mix056_power.oepc_pso.oepc_rmo.oepc.i [2024-05-12 13:28:34,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:28:34,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:28:34,966 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:28:35,005 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:28:35,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:28:35,075 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-05-12 13:28:35,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:28:35,078 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 4. Compared 72 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 13:28:35,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:28:35,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-05-12 13:28:35,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:28:35,095 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;@7cf252ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:28:35,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:28:35,101 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:28:35,101 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:28:35,102 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:28:35,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:35,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:28:35,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:35,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:35,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1737518360, now seen corresponding path program 1 times [2024-05-12 13:28:35,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:35,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187762660] [2024-05-12 13:28:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:35,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:35,980 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 13:28:35,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:35,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187762660] [2024-05-12 13:28:35,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187762660] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:35,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:35,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:28:35,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435351065] [2024-05-12 13:28:35,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:35,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:28:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:36,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:28:36,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:28:36,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:36,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:36,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:36,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:36,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:36,888 INFO L124 PetriNetUnfolderBase]: 4500/7473 cut-off events. [2024-05-12 13:28:36,888 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-05-12 13:28:36,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14038 conditions, 7473 events. 4500/7473 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 49199 event pairs, 3527 based on Foata normal form. 253/7145 useless extension candidates. Maximal degree in co-relation 14023. Up to 6446 conditions per place. [2024-05-12 13:28:36,977 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 44 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-05-12 13:28:36,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 229 flow [2024-05-12 13:28:36,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:28:36,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:28:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-05-12 13:28:36,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-05-12 13:28:36,990 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 90 transitions. [2024-05-12 13:28:36,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 229 flow [2024-05-12 13:28:36,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:28:36,995 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-05-12 13:28:36,997 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 13:28:37,000 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:28:37,000 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-05-12 13:28:37,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:37,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:37,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:28:37,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:28:37,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:37,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:37,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1737517483, now seen corresponding path program 1 times [2024-05-12 13:28:37,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:37,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344542204] [2024-05-12 13:28:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:37,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:37,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:37,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344542204] [2024-05-12 13:28:37,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344542204] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:37,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:37,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:28:37,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931715257] [2024-05-12 13:28:37,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:37,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:28:37,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:37,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:28:37,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:28:37,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-05-12 13:28:37,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:37,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:37,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-05-12 13:28:37,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:37,314 INFO L124 PetriNetUnfolderBase]: 950/1774 cut-off events. [2024-05-12 13:28:37,315 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-05-12 13:28:37,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 1774 events. 950/1774 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11498 event pairs, 463 based on Foata normal form. 0/1664 useless extension candidates. Maximal degree in co-relation 3463. Up to 1207 conditions per place. [2024-05-12 13:28:37,325 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-05-12 13:28:37,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 236 flow [2024-05-12 13:28:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:28:37,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:28:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-05-12 13:28:37,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75177304964539 [2024-05-12 13:28:37,327 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 106 transitions. [2024-05-12 13:28:37,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 236 flow [2024-05-12 13:28:37,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:28:37,330 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-05-12 13:28:37,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-05-12 13:28:37,330 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:28:37,331 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-05-12 13:28:37,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:37,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:37,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:37,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:28:37,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:37,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 987153126, now seen corresponding path program 1 times [2024-05-12 13:28:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:37,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107091232] [2024-05-12 13:28:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:37,830 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 13:28:37,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107091232] [2024-05-12 13:28:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107091232] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:37,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:37,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:28:37,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607836179] [2024-05-12 13:28:37,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:37,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:28:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:28:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:28:37,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:37,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:37,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:37,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:37,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:38,425 INFO L124 PetriNetUnfolderBase]: 3821/6191 cut-off events. [2024-05-12 13:28:38,425 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2024-05-12 13:28:38,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13118 conditions, 6191 events. 3821/6191 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 38022 event pairs, 2504 based on Foata normal form. 3/5975 useless extension candidates. Maximal degree in co-relation 13102. Up to 5470 conditions per place. [2024-05-12 13:28:38,454 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 52 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2024-05-12 13:28:38,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 318 flow [2024-05-12 13:28:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:28:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:28:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-05-12 13:28:38,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851063829787234 [2024-05-12 13:28:38,460 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 110 transitions. [2024-05-12 13:28:38,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 318 flow [2024-05-12 13:28:38,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:38,463 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 183 flow [2024-05-12 13:28:38,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-05-12 13:28:38,465 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-05-12 13:28:38,465 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 183 flow [2024-05-12 13:28:38,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:38,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:38,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:38,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:28:38,466 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:38,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash 536976517, now seen corresponding path program 1 times [2024-05-12 13:28:38,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:38,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019148749] [2024-05-12 13:28:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:38,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:39,000 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 13:28:39,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:39,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019148749] [2024-05-12 13:28:39,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019148749] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:39,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:39,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:28:39,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179644506] [2024-05-12 13:28:39,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:39,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:28:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:28:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:28:39,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:39,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 183 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 13:28:39,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:39,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:39,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:39,587 INFO L124 PetriNetUnfolderBase]: 3310/5458 cut-off events. [2024-05-12 13:28:39,587 INFO L125 PetriNetUnfolderBase]: For 2314/2314 co-relation queries the response was YES. [2024-05-12 13:28:39,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12525 conditions, 5458 events. 3310/5458 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 33885 event pairs, 1652 based on Foata normal form. 5/5248 useless extension candidates. Maximal degree in co-relation 12507. Up to 4663 conditions per place. [2024-05-12 13:28:39,611 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 68 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-05-12 13:28:39,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 95 transitions, 497 flow [2024-05-12 13:28:39,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:28:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:28:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-05-12 13:28:39,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-05-12 13:28:39,612 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 183 flow. Second operand 5 states and 141 transitions. [2024-05-12 13:28:39,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 95 transitions, 497 flow [2024-05-12 13:28:39,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 486 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-05-12 13:28:39,615 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 297 flow [2024-05-12 13:28:39,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-05-12 13:28:39,616 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-05-12 13:28:39,616 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 297 flow [2024-05-12 13:28:39,616 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 13:28:39,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:39,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:39,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:28:39,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:39,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash 242161197, now seen corresponding path program 1 times [2024-05-12 13:28:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879134751] [2024-05-12 13:28:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:40,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:40,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879134751] [2024-05-12 13:28:40,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879134751] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:40,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:28:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155293326] [2024-05-12 13:28:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:40,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:28:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:28:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:28:40,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:40,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:40,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:40,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:40,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:41,108 INFO L124 PetriNetUnfolderBase]: 3332/5486 cut-off events. [2024-05-12 13:28:41,109 INFO L125 PetriNetUnfolderBase]: For 5647/5650 co-relation queries the response was YES. [2024-05-12 13:28:41,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14625 conditions, 5486 events. 3332/5486 cut-off events. For 5647/5650 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 33922 event pairs, 1384 based on Foata normal form. 7/5279 useless extension candidates. Maximal degree in co-relation 14603. Up to 4656 conditions per place. [2024-05-12 13:28:41,134 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 78 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-05-12 13:28:41,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 655 flow [2024-05-12 13:28:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-05-12 13:28:41,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921985815602837 [2024-05-12 13:28:41,140 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 297 flow. Second operand 6 states and 167 transitions. [2024-05-12 13:28:41,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 655 flow [2024-05-12 13:28:41,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 647 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-05-12 13:28:41,147 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 374 flow [2024-05-12 13:28:41,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-05-12 13:28:41,149 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-05-12 13:28:41,149 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 374 flow [2024-05-12 13:28:41,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:41,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:41,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:41,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:28:41,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:41,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1082936740, now seen corresponding path program 1 times [2024-05-12 13:28:41,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:41,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170105577] [2024-05-12 13:28:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:41,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:41,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170105577] [2024-05-12 13:28:41,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170105577] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:41,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:41,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145932782] [2024-05-12 13:28:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:41,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:41,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:41,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:28:41,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 374 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 13:28:41,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:41,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:28:41,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:42,490 INFO L124 PetriNetUnfolderBase]: 3367/5553 cut-off events. [2024-05-12 13:28:42,490 INFO L125 PetriNetUnfolderBase]: For 8576/8579 co-relation queries the response was YES. [2024-05-12 13:28:42,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16128 conditions, 5553 events. 3367/5553 cut-off events. For 8576/8579 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 34488 event pairs, 1085 based on Foata normal form. 12/5348 useless extension candidates. Maximal degree in co-relation 16103. Up to 4633 conditions per place. [2024-05-12 13:28:42,523 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 85 selfloop transitions, 25 changer transitions 0/119 dead transitions. [2024-05-12 13:28:42,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 119 transitions, 776 flow [2024-05-12 13:28:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-05-12 13:28:42,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-05-12 13:28:42,524 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 374 flow. Second operand 7 states and 189 transitions. [2024-05-12 13:28:42,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 119 transitions, 776 flow [2024-05-12 13:28:42,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 723 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:42,533 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 401 flow [2024-05-12 13:28:42,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2024-05-12 13:28:42,536 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-05-12 13:28:42,536 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 401 flow [2024-05-12 13:28:42,536 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 13:28:42,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:42,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:28:42,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:42,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash 458415148, now seen corresponding path program 1 times [2024-05-12 13:28:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:42,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762920140] [2024-05-12 13:28:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:42,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:43,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:43,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762920140] [2024-05-12 13:28:43,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762920140] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:43,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:43,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:28:43,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227730082] [2024-05-12 13:28:43,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:43,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:28:43,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:43,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:28:43,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:28:43,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:43,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 401 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:43,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:43,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:43,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:43,751 INFO L124 PetriNetUnfolderBase]: 3913/6524 cut-off events. [2024-05-12 13:28:43,751 INFO L125 PetriNetUnfolderBase]: For 13009/13009 co-relation queries the response was YES. [2024-05-12 13:28:43,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19451 conditions, 6524 events. 3913/6524 cut-off events. For 13009/13009 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 41448 event pairs, 1648 based on Foata normal form. 2/6302 useless extension candidates. Maximal degree in co-relation 19425. Up to 5603 conditions per place. [2024-05-12 13:28:43,782 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 67 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2024-05-12 13:28:43,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 89 transitions, 629 flow [2024-05-12 13:28:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:28:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:28:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-05-12 13:28:43,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-05-12 13:28:43,784 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 401 flow. Second operand 5 states and 114 transitions. [2024-05-12 13:28:43,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 89 transitions, 629 flow [2024-05-12 13:28:43,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 561 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 13:28:43,790 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 405 flow [2024-05-12 13:28:43,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-05-12 13:28:43,791 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-05-12 13:28:43,792 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 405 flow [2024-05-12 13:28:43,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:43,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:43,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:43,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:28:43,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:43,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:43,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1280734419, now seen corresponding path program 1 times [2024-05-12 13:28:43,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:43,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331309577] [2024-05-12 13:28:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:43,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:44,301 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 13:28:44,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:44,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331309577] [2024-05-12 13:28:44,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331309577] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:44,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:44,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386060712] [2024-05-12 13:28:44,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:44,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:44,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:44,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:44,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:44,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:44,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:44,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:45,122 INFO L124 PetriNetUnfolderBase]: 4017/6429 cut-off events. [2024-05-12 13:28:45,123 INFO L125 PetriNetUnfolderBase]: For 16356/16356 co-relation queries the response was YES. [2024-05-12 13:28:45,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20118 conditions, 6429 events. 4017/6429 cut-off events. For 16356/16356 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 39121 event pairs, 1564 based on Foata normal form. 10/6273 useless extension candidates. Maximal degree in co-relation 20090. Up to 5417 conditions per place. [2024-05-12 13:28:45,163 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 91 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2024-05-12 13:28:45,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 120 transitions, 817 flow [2024-05-12 13:28:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-05-12 13:28:45,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:28:45,164 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 405 flow. Second operand 6 states and 150 transitions. [2024-05-12 13:28:45,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 120 transitions, 817 flow [2024-05-12 13:28:45,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 120 transitions, 779 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-05-12 13:28:45,175 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 522 flow [2024-05-12 13:28:45,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=522, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2024-05-12 13:28:45,177 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-05-12 13:28:45,177 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 522 flow [2024-05-12 13:28:45,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:45,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:45,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:45,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:28:45,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:45,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:45,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1041416968, now seen corresponding path program 1 times [2024-05-12 13:28:45,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:45,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630518072] [2024-05-12 13:28:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:45,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:45,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630518072] [2024-05-12 13:28:45,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630518072] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:45,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:45,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:45,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896041232] [2024-05-12 13:28:45,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:45,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:45,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:45,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:45,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:45,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:45,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 522 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:45,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:45,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:45,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:46,615 INFO L124 PetriNetUnfolderBase]: 4035/6528 cut-off events. [2024-05-12 13:28:46,615 INFO L125 PetriNetUnfolderBase]: For 22194/22203 co-relation queries the response was YES. [2024-05-12 13:28:46,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22349 conditions, 6528 events. 4035/6528 cut-off events. For 22194/22203 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 39943 event pairs, 1462 based on Foata normal form. 10/6310 useless extension candidates. Maximal degree in co-relation 22318. Up to 5653 conditions per place. [2024-05-12 13:28:46,653 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 87 selfloop transitions, 21 changer transitions 0/116 dead transitions. [2024-05-12 13:28:46,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 116 transitions, 866 flow [2024-05-12 13:28:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-05-12 13:28:46,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:28:46,654 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 522 flow. Second operand 6 states and 144 transitions. [2024-05-12 13:28:46,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 116 transitions, 866 flow [2024-05-12 13:28:46,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 116 transitions, 848 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-05-12 13:28:46,669 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 580 flow [2024-05-12 13:28:46,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-05-12 13:28:46,669 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-05-12 13:28:46,670 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 580 flow [2024-05-12 13:28:46,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:46,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:46,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:46,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:28:46,670 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:46,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:46,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1844651478, now seen corresponding path program 2 times [2024-05-12 13:28:46,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:46,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256201938] [2024-05-12 13:28:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:47,257 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 13:28:47,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:47,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256201938] [2024-05-12 13:28:47,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256201938] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:47,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:47,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:28:47,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016640052] [2024-05-12 13:28:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:47,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:28:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:47,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:28:47,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:28:47,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:47,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 580 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:47,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:47,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:47,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:47,964 INFO L124 PetriNetUnfolderBase]: 4020/6408 cut-off events. [2024-05-12 13:28:47,965 INFO L125 PetriNetUnfolderBase]: For 23655/23655 co-relation queries the response was YES. [2024-05-12 13:28:47,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22412 conditions, 6408 events. 4020/6408 cut-off events. For 23655/23655 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38781 event pairs, 1647 based on Foata normal form. 2/6251 useless extension candidates. Maximal degree in co-relation 22378. Up to 5736 conditions per place. [2024-05-12 13:28:48,000 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 88 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2024-05-12 13:28:48,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 109 transitions, 840 flow [2024-05-12 13:28:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:28:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:28:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-05-12 13:28:48,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2024-05-12 13:28:48,002 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 580 flow. Second operand 6 states and 134 transitions. [2024-05-12 13:28:48,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 109 transitions, 840 flow [2024-05-12 13:28:48,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 109 transitions, 807 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 13:28:48,018 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 581 flow [2024-05-12 13:28:48,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=581, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2024-05-12 13:28:48,019 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-05-12 13:28:48,020 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 581 flow [2024-05-12 13:28:48,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:48,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:48,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:48,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:28:48,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:48,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash -635685937, now seen corresponding path program 1 times [2024-05-12 13:28:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412088215] [2024-05-12 13:28:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:48,596 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 13:28:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412088215] [2024-05-12 13:28:48,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412088215] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:48,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:48,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:48,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579330255] [2024-05-12 13:28:48,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:48,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:48,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:48,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:48,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:48,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:48,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 581 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 13:28:48,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:48,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:48,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:49,481 INFO L124 PetriNetUnfolderBase]: 5156/8144 cut-off events. [2024-05-12 13:28:49,481 INFO L125 PetriNetUnfolderBase]: For 30911/30920 co-relation queries the response was YES. [2024-05-12 13:28:49,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28099 conditions, 8144 events. 5156/8144 cut-off events. For 30911/30920 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 50049 event pairs, 1426 based on Foata normal form. 22/7922 useless extension candidates. Maximal degree in co-relation 28064. Up to 5820 conditions per place. [2024-05-12 13:28:49,535 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 121 selfloop transitions, 32 changer transitions 0/161 dead transitions. [2024-05-12 13:28:49,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 161 transitions, 1280 flow [2024-05-12 13:28:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-05-12 13:28:49,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5623100303951368 [2024-05-12 13:28:49,537 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 581 flow. Second operand 7 states and 185 transitions. [2024-05-12 13:28:49,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 161 transitions, 1280 flow [2024-05-12 13:28:49,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 161 transitions, 1224 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:28:49,559 INFO L231 Difference]: Finished difference. Result has 86 places, 106 transitions, 795 flow [2024-05-12 13:28:49,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=795, PETRI_PLACES=86, PETRI_TRANSITIONS=106} [2024-05-12 13:28:49,560 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-05-12 13:28:49,560 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 106 transitions, 795 flow [2024-05-12 13:28:49,560 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 13:28:49,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:49,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:49,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:28:49,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:49,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash 771218063, now seen corresponding path program 2 times [2024-05-12 13:28:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:49,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889907754] [2024-05-12 13:28:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:50,152 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 13:28:50,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889907754] [2024-05-12 13:28:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889907754] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:50,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:50,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986995406] [2024-05-12 13:28:50,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:50,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:50,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:50,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:50,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 795 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 13:28:50,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:50,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:50,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:51,177 INFO L124 PetriNetUnfolderBase]: 5316/8335 cut-off events. [2024-05-12 13:28:51,178 INFO L125 PetriNetUnfolderBase]: For 44075/44075 co-relation queries the response was YES. [2024-05-12 13:28:51,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34210 conditions, 8335 events. 5316/8335 cut-off events. For 44075/44075 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 51463 event pairs, 1772 based on Foata normal form. 10/8143 useless extension candidates. Maximal degree in co-relation 34172. Up to 7116 conditions per place. [2024-05-12 13:28:51,226 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 127 selfloop transitions, 26 changer transitions 0/161 dead transitions. [2024-05-12 13:28:51,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 161 transitions, 1441 flow [2024-05-12 13:28:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-05-12 13:28:51,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-05-12 13:28:51,228 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 795 flow. Second operand 7 states and 172 transitions. [2024-05-12 13:28:51,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 161 transitions, 1441 flow [2024-05-12 13:28:51,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 161 transitions, 1395 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-05-12 13:28:51,263 INFO L231 Difference]: Finished difference. Result has 94 places, 117 transitions, 951 flow [2024-05-12 13:28:51,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=951, PETRI_PLACES=94, PETRI_TRANSITIONS=117} [2024-05-12 13:28:51,263 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 41 predicate places. [2024-05-12 13:28:51,264 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 117 transitions, 951 flow [2024-05-12 13:28:51,264 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 13:28:51,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:51,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:51,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:28:51,264 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:51,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1869814511, now seen corresponding path program 3 times [2024-05-12 13:28:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:51,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330963002] [2024-05-12 13:28:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:51,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330963002] [2024-05-12 13:28:51,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330963002] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:51,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:51,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:51,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330585240] [2024-05-12 13:28:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:51,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:51,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:51,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:51,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:51,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 117 transitions, 951 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 13:28:51,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:51,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:51,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:52,857 INFO L124 PetriNetUnfolderBase]: 5420/8509 cut-off events. [2024-05-12 13:28:52,857 INFO L125 PetriNetUnfolderBase]: For 51190/51190 co-relation queries the response was YES. [2024-05-12 13:28:52,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35884 conditions, 8509 events. 5420/8509 cut-off events. For 51190/51190 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 52815 event pairs, 1858 based on Foata normal form. 10/8309 useless extension candidates. Maximal degree in co-relation 35841. Up to 7493 conditions per place. [2024-05-12 13:28:52,912 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 126 selfloop transitions, 26 changer transitions 0/160 dead transitions. [2024-05-12 13:28:52,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 160 transitions, 1481 flow [2024-05-12 13:28:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:28:52,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-05-12 13:28:52,915 INFO L175 Difference]: Start difference. First operand has 94 places, 117 transitions, 951 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:28:52,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 160 transitions, 1481 flow [2024-05-12 13:28:52,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 160 transitions, 1427 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-05-12 13:28:52,956 INFO L231 Difference]: Finished difference. Result has 101 places, 126 transitions, 1082 flow [2024-05-12 13:28:52,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1082, PETRI_PLACES=101, PETRI_TRANSITIONS=126} [2024-05-12 13:28:52,957 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-05-12 13:28:52,957 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 126 transitions, 1082 flow [2024-05-12 13:28:52,958 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 13:28:52,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:52,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:52,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:28:52,958 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:52,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:52,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1869804622, now seen corresponding path program 1 times [2024-05-12 13:28:52,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:52,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075781736] [2024-05-12 13:28:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:52,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:53,814 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 13:28:53,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:53,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075781736] [2024-05-12 13:28:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075781736] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:53,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:53,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:28:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670152644] [2024-05-12 13:28:53,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:53,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:28:53,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:28:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:28:53,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:53,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 126 transitions, 1082 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 13:28:53,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:53,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:53,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:55,218 INFO L124 PetriNetUnfolderBase]: 5615/8883 cut-off events. [2024-05-12 13:28:55,218 INFO L125 PetriNetUnfolderBase]: For 56502/56502 co-relation queries the response was YES. [2024-05-12 13:28:55,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37498 conditions, 8883 events. 5615/8883 cut-off events. For 56502/56502 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 56240 event pairs, 1779 based on Foata normal form. 18/8668 useless extension candidates. Maximal degree in co-relation 37451. Up to 7342 conditions per place. [2024-05-12 13:28:55,269 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 143 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-05-12 13:28:55,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 180 transitions, 1666 flow [2024-05-12 13:28:55,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:28:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:28:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:28:55,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541033434650456 [2024-05-12 13:28:55,271 INFO L175 Difference]: Start difference. First operand has 101 places, 126 transitions, 1082 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:28:55,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 180 transitions, 1666 flow [2024-05-12 13:28:55,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 180 transitions, 1597 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:55,313 INFO L231 Difference]: Finished difference. Result has 104 places, 128 transitions, 1115 flow [2024-05-12 13:28:55,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1115, PETRI_PLACES=104, PETRI_TRANSITIONS=128} [2024-05-12 13:28:55,313 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2024-05-12 13:28:55,313 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 128 transitions, 1115 flow [2024-05-12 13:28:55,314 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 13:28:55,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:55,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:55,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:28:55,314 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:55,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1922888848, now seen corresponding path program 1 times [2024-05-12 13:28:55,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:55,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101654181] [2024-05-12 13:28:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:55,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:55,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101654181] [2024-05-12 13:28:55,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101654181] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:55,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:55,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:28:55,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082589552] [2024-05-12 13:28:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:55,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:28:55,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:55,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:28:55,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:28:55,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:55,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 128 transitions, 1115 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:55,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:55,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:55,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:56,766 INFO L124 PetriNetUnfolderBase]: 5606/8815 cut-off events. [2024-05-12 13:28:56,766 INFO L125 PetriNetUnfolderBase]: For 59914/59914 co-relation queries the response was YES. [2024-05-12 13:28:56,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37968 conditions, 8815 events. 5606/8815 cut-off events. For 59914/59914 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 55003 event pairs, 1901 based on Foata normal form. 3/8600 useless extension candidates. Maximal degree in co-relation 37920. Up to 7914 conditions per place. [2024-05-12 13:28:56,821 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 124 selfloop transitions, 13 changer transitions 0/145 dead transitions. [2024-05-12 13:28:56,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 145 transitions, 1435 flow [2024-05-12 13:28:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:28:56,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:28:56,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-05-12 13:28:56,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-05-12 13:28:56,823 INFO L175 Difference]: Start difference. First operand has 104 places, 128 transitions, 1115 flow. Second operand 5 states and 112 transitions. [2024-05-12 13:28:56,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 145 transitions, 1435 flow [2024-05-12 13:28:56,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 145 transitions, 1337 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 13:28:56,876 INFO L231 Difference]: Finished difference. Result has 104 places, 128 transitions, 1052 flow [2024-05-12 13:28:56,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1052, PETRI_PLACES=104, PETRI_TRANSITIONS=128} [2024-05-12 13:28:56,876 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2024-05-12 13:28:56,876 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 128 transitions, 1052 flow [2024-05-12 13:28:56,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:56,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:56,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:56,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:28:56,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:56,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:56,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1764758221, now seen corresponding path program 1 times [2024-05-12 13:28:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:56,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021914848] [2024-05-12 13:28:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:57,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:57,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021914848] [2024-05-12 13:28:57,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021914848] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:57,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:57,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:57,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23933719] [2024-05-12 13:28:57,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:57,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:57,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:57,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:57,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:57,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:57,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 128 transitions, 1052 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:57,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:57,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:57,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:28:58,890 INFO L124 PetriNetUnfolderBase]: 5606/8851 cut-off events. [2024-05-12 13:28:58,890 INFO L125 PetriNetUnfolderBase]: For 59408/59420 co-relation queries the response was YES. [2024-05-12 13:28:58,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37487 conditions, 8851 events. 5606/8851 cut-off events. For 59408/59420 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 55177 event pairs, 1656 based on Foata normal form. 10/8583 useless extension candidates. Maximal degree in co-relation 37438. Up to 7751 conditions per place. [2024-05-12 13:28:58,956 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 142 selfloop transitions, 28 changer transitions 0/178 dead transitions. [2024-05-12 13:28:58,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 178 transitions, 1570 flow [2024-05-12 13:28:58,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:28:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:28:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:28:58,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-05-12 13:28:58,958 INFO L175 Difference]: Start difference. First operand has 104 places, 128 transitions, 1052 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:28:58,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 178 transitions, 1570 flow [2024-05-12 13:28:59,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 178 transitions, 1533 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:28:59,004 INFO L231 Difference]: Finished difference. Result has 108 places, 131 transitions, 1130 flow [2024-05-12 13:28:59,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1130, PETRI_PLACES=108, PETRI_TRANSITIONS=131} [2024-05-12 13:28:59,005 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-05-12 13:28:59,005 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 131 transitions, 1130 flow [2024-05-12 13:28:59,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:59,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:28:59,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:28:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:28:59,006 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:28:59,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:28:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1768573236, now seen corresponding path program 1 times [2024-05-12 13:28:59,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:28:59,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5341637] [2024-05-12 13:28:59,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:28:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:28:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:28:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:28:59,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:28:59,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5341637] [2024-05-12 13:28:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5341637] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:28:59,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:28:59,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:28:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51755046] [2024-05-12 13:28:59,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:28:59,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:28:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:28:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:28:59,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:28:59,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:28:59,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 131 transitions, 1130 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:28:59,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:28:59,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:28:59,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:00,807 INFO L124 PetriNetUnfolderBase]: 5942/9403 cut-off events. [2024-05-12 13:29:00,807 INFO L125 PetriNetUnfolderBase]: For 70565/70577 co-relation queries the response was YES. [2024-05-12 13:29:00,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40827 conditions, 9403 events. 5942/9403 cut-off events. For 70565/70577 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 59509 event pairs, 1502 based on Foata normal form. 13/9132 useless extension candidates. Maximal degree in co-relation 40778. Up to 6391 conditions per place. [2024-05-12 13:29:00,886 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 132 selfloop transitions, 52 changer transitions 0/192 dead transitions. [2024-05-12 13:29:00,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 192 transitions, 1936 flow [2024-05-12 13:29:00,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-05-12 13:29:00,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2024-05-12 13:29:00,888 INFO L175 Difference]: Start difference. First operand has 108 places, 131 transitions, 1130 flow. Second operand 7 states and 184 transitions. [2024-05-12 13:29:00,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 192 transitions, 1936 flow [2024-05-12 13:29:00,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 192 transitions, 1847 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:00,956 INFO L231 Difference]: Finished difference. Result has 111 places, 140 transitions, 1319 flow [2024-05-12 13:29:00,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1319, PETRI_PLACES=111, PETRI_TRANSITIONS=140} [2024-05-12 13:29:00,956 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-05-12 13:29:00,956 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 140 transitions, 1319 flow [2024-05-12 13:29:00,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:00,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:00,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:00,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:29:00,957 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:00,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1768567656, now seen corresponding path program 2 times [2024-05-12 13:29:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:00,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217469732] [2024-05-12 13:29:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:00,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:01,535 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 13:29:01,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:01,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217469732] [2024-05-12 13:29:01,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217469732] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:01,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:01,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:01,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780739993] [2024-05-12 13:29:01,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:01,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:01,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:01,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:01,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:01,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:01,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 140 transitions, 1319 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:01,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:01,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:01,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:02,647 INFO L124 PetriNetUnfolderBase]: 5926/9391 cut-off events. [2024-05-12 13:29:02,648 INFO L125 PetriNetUnfolderBase]: For 82642/82654 co-relation queries the response was YES. [2024-05-12 13:29:02,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43418 conditions, 9391 events. 5926/9391 cut-off events. For 82642/82654 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 59502 event pairs, 1640 based on Foata normal form. 13/9118 useless extension candidates. Maximal degree in co-relation 43366. Up to 6385 conditions per place. [2024-05-12 13:29:02,716 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 133 selfloop transitions, 55 changer transitions 0/196 dead transitions. [2024-05-12 13:29:02,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 196 transitions, 2037 flow [2024-05-12 13:29:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:02,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-05-12 13:29:02,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-05-12 13:29:02,718 INFO L175 Difference]: Start difference. First operand has 111 places, 140 transitions, 1319 flow. Second operand 7 states and 187 transitions. [2024-05-12 13:29:02,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 196 transitions, 2037 flow [2024-05-12 13:29:02,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 196 transitions, 1928 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:02,844 INFO L231 Difference]: Finished difference. Result has 117 places, 143 transitions, 1423 flow [2024-05-12 13:29:02,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1423, PETRI_PLACES=117, PETRI_TRANSITIONS=143} [2024-05-12 13:29:02,845 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-05-12 13:29:02,845 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 143 transitions, 1423 flow [2024-05-12 13:29:02,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:02,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:02,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:02,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:29:02,846 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:02,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:02,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1119699732, now seen corresponding path program 3 times [2024-05-12 13:29:02,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:02,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177180004] [2024-05-12 13:29:02,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:02,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:03,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177180004] [2024-05-12 13:29:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177180004] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:03,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:03,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:29:03,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292352262] [2024-05-12 13:29:03,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:03,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:29:03,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:03,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:29:03,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:29:03,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:03,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 143 transitions, 1423 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:03,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:03,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:03,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:04,609 INFO L124 PetriNetUnfolderBase]: 6030/9188 cut-off events. [2024-05-12 13:29:04,609 INFO L125 PetriNetUnfolderBase]: For 90622/90634 co-relation queries the response was YES. [2024-05-12 13:29:04,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45336 conditions, 9188 events. 6030/9188 cut-off events. For 90622/90634 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 55909 event pairs, 2004 based on Foata normal form. 18/9041 useless extension candidates. Maximal degree in co-relation 45281. Up to 8190 conditions per place. [2024-05-12 13:29:04,683 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 149 selfloop transitions, 28 changer transitions 0/185 dead transitions. [2024-05-12 13:29:04,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 185 transitions, 1983 flow [2024-05-12 13:29:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:04,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-05-12 13:29:04,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-05-12 13:29:04,685 INFO L175 Difference]: Start difference. First operand has 117 places, 143 transitions, 1423 flow. Second operand 7 states and 169 transitions. [2024-05-12 13:29:04,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 185 transitions, 1983 flow [2024-05-12 13:29:04,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 185 transitions, 1873 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:04,785 INFO L231 Difference]: Finished difference. Result has 119 places, 147 transitions, 1452 flow [2024-05-12 13:29:04,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1452, PETRI_PLACES=119, PETRI_TRANSITIONS=147} [2024-05-12 13:29:04,786 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-05-12 13:29:04,786 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 147 transitions, 1452 flow [2024-05-12 13:29:04,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:04,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:04,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:04,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:29:04,787 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:04,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1119995689, now seen corresponding path program 1 times [2024-05-12 13:29:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:04,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930971639] [2024-05-12 13:29:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:04,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:05,509 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 13:29:05,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:05,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930971639] [2024-05-12 13:29:05,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930971639] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:05,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:05,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:05,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924656751] [2024-05-12 13:29:05,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:05,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:05,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:05,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:05,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:05,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:05,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 147 transitions, 1452 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 13:29:05,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:05,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:05,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:06,712 INFO L124 PetriNetUnfolderBase]: 6087/9302 cut-off events. [2024-05-12 13:29:06,712 INFO L125 PetriNetUnfolderBase]: For 94670/94670 co-relation queries the response was YES. [2024-05-12 13:29:06,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44926 conditions, 9302 events. 6087/9302 cut-off events. For 94670/94670 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 56881 event pairs, 1966 based on Foata normal form. 5/9131 useless extension candidates. Maximal degree in co-relation 44871. Up to 8349 conditions per place. [2024-05-12 13:29:06,800 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 148 selfloop transitions, 37 changer transitions 0/193 dead transitions. [2024-05-12 13:29:06,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 193 transitions, 2066 flow [2024-05-12 13:29:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-05-12 13:29:06,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-05-12 13:29:06,802 INFO L175 Difference]: Start difference. First operand has 119 places, 147 transitions, 1452 flow. Second operand 7 states and 166 transitions. [2024-05-12 13:29:06,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 193 transitions, 2066 flow [2024-05-12 13:29:06,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 193 transitions, 1985 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:06,903 INFO L231 Difference]: Finished difference. Result has 123 places, 160 transitions, 1633 flow [2024-05-12 13:29:06,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1633, PETRI_PLACES=123, PETRI_TRANSITIONS=160} [2024-05-12 13:29:06,903 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-05-12 13:29:06,904 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 160 transitions, 1633 flow [2024-05-12 13:29:06,904 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 13:29:06,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:06,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:06,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:29:06,904 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:06,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1127129582, now seen corresponding path program 1 times [2024-05-12 13:29:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:06,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605096428] [2024-05-12 13:29:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:06,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:07,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:07,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605096428] [2024-05-12 13:29:07,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605096428] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:07,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:07,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:07,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157620215] [2024-05-12 13:29:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:07,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:07,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:07,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:07,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 160 transitions, 1633 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:07,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:07,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:07,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:09,205 INFO L124 PetriNetUnfolderBase]: 6132/9364 cut-off events. [2024-05-12 13:29:09,206 INFO L125 PetriNetUnfolderBase]: For 107213/107228 co-relation queries the response was YES. [2024-05-12 13:29:09,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48377 conditions, 9364 events. 6132/9364 cut-off events. For 107213/107228 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 57149 event pairs, 1432 based on Foata normal form. 14/9173 useless extension candidates. Maximal degree in co-relation 48319. Up to 8315 conditions per place. [2024-05-12 13:29:09,283 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 176 selfloop transitions, 31 changer transitions 0/215 dead transitions. [2024-05-12 13:29:09,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 215 transitions, 2383 flow [2024-05-12 13:29:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:29:09,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:29:09,285 INFO L175 Difference]: Start difference. First operand has 123 places, 160 transitions, 1633 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:29:09,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 215 transitions, 2383 flow [2024-05-12 13:29:09,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 215 transitions, 2297 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:09,390 INFO L231 Difference]: Finished difference. Result has 128 places, 164 transitions, 1724 flow [2024-05-12 13:29:09,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1724, PETRI_PLACES=128, PETRI_TRANSITIONS=164} [2024-05-12 13:29:09,390 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-05-12 13:29:09,390 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 164 transitions, 1724 flow [2024-05-12 13:29:09,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:09,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:09,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:09,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:29:09,391 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:09,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:09,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1127069008, now seen corresponding path program 1 times [2024-05-12 13:29:09,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420490056] [2024-05-12 13:29:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:10,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420490056] [2024-05-12 13:29:10,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420490056] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:10,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:10,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:10,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144960430] [2024-05-12 13:29:10,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:10,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:10,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:10,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:10,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 164 transitions, 1724 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:10,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:10,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:10,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:11,505 INFO L124 PetriNetUnfolderBase]: 6304/9362 cut-off events. [2024-05-12 13:29:11,506 INFO L125 PetriNetUnfolderBase]: For 118815/118830 co-relation queries the response was YES. [2024-05-12 13:29:11,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49822 conditions, 9362 events. 6304/9362 cut-off events. For 118815/118830 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 54987 event pairs, 1089 based on Foata normal form. 10/9262 useless extension candidates. Maximal degree in co-relation 49763. Up to 7185 conditions per place. [2024-05-12 13:29:11,581 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 214 selfloop transitions, 62 changer transitions 0/284 dead transitions. [2024-05-12 13:29:11,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 284 transitions, 3481 flow [2024-05-12 13:29:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:11,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 13:29:11,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2024-05-12 13:29:11,582 INFO L175 Difference]: Start difference. First operand has 128 places, 164 transitions, 1724 flow. Second operand 8 states and 210 transitions. [2024-05-12 13:29:11,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 284 transitions, 3481 flow [2024-05-12 13:29:11,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 284 transitions, 3389 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:11,708 INFO L231 Difference]: Finished difference. Result has 136 places, 203 transitions, 2299 flow [2024-05-12 13:29:11,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2299, PETRI_PLACES=136, PETRI_TRANSITIONS=203} [2024-05-12 13:29:11,709 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2024-05-12 13:29:11,709 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 203 transitions, 2299 flow [2024-05-12 13:29:11,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:11,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:11,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:11,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:29:11,709 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:11,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:11,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2108141894, now seen corresponding path program 2 times [2024-05-12 13:29:11,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:11,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762664261] [2024-05-12 13:29:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:11,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:12,512 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 13:29:12,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762664261] [2024-05-12 13:29:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762664261] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:12,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:12,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:12,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695577912] [2024-05-12 13:29:12,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:12,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:12,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:12,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:12,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:12,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:12,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 203 transitions, 2299 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:12,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:12,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:12,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:13,885 INFO L124 PetriNetUnfolderBase]: 6296/9621 cut-off events. [2024-05-12 13:29:13,885 INFO L125 PetriNetUnfolderBase]: For 134060/134075 co-relation queries the response was YES. [2024-05-12 13:29:13,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53663 conditions, 9621 events. 6296/9621 cut-off events. For 134060/134075 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 59032 event pairs, 1691 based on Foata normal form. 14/9430 useless extension candidates. Maximal degree in co-relation 53598. Up to 8651 conditions per place. [2024-05-12 13:29:13,970 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 219 selfloop transitions, 32 changer transitions 0/259 dead transitions. [2024-05-12 13:29:13,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 259 transitions, 2981 flow [2024-05-12 13:29:13,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:29:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:29:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-05-12 13:29:13,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-05-12 13:29:13,972 INFO L175 Difference]: Start difference. First operand has 136 places, 203 transitions, 2299 flow. Second operand 9 states and 212 transitions. [2024-05-12 13:29:13,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 259 transitions, 2981 flow [2024-05-12 13:29:14,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 259 transitions, 2883 flow, removed 48 selfloop flow, removed 1 redundant places. [2024-05-12 13:29:14,162 INFO L231 Difference]: Finished difference. Result has 144 places, 203 transitions, 2273 flow [2024-05-12 13:29:14,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2273, PETRI_PLACES=144, PETRI_TRANSITIONS=203} [2024-05-12 13:29:14,170 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 91 predicate places. [2024-05-12 13:29:14,170 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 203 transitions, 2273 flow [2024-05-12 13:29:14,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:14,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:14,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:14,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:29:14,170 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:14,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1124267848, now seen corresponding path program 2 times [2024-05-12 13:29:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:14,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696685199] [2024-05-12 13:29:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:14,968 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 13:29:14,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696685199] [2024-05-12 13:29:14,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696685199] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:14,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:14,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:14,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864899666] [2024-05-12 13:29:14,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:14,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:14,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:15,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:15,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 203 transitions, 2273 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:15,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:15,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:15,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:16,433 INFO L124 PetriNetUnfolderBase]: 6460/9514 cut-off events. [2024-05-12 13:29:16,433 INFO L125 PetriNetUnfolderBase]: For 140780/140795 co-relation queries the response was YES. [2024-05-12 13:29:16,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54829 conditions, 9514 events. 6460/9514 cut-off events. For 140780/140795 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 55218 event pairs, 1096 based on Foata normal form. 10/9430 useless extension candidates. Maximal degree in co-relation 54761. Up to 7778 conditions per place. [2024-05-12 13:29:16,529 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 212 selfloop transitions, 70 changer transitions 0/290 dead transitions. [2024-05-12 13:29:16,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 290 transitions, 3734 flow [2024-05-12 13:29:16,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-05-12 13:29:16,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-05-12 13:29:16,531 INFO L175 Difference]: Start difference. First operand has 144 places, 203 transitions, 2273 flow. Second operand 8 states and 205 transitions. [2024-05-12 13:29:16,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 290 transitions, 3734 flow [2024-05-12 13:29:16,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 290 transitions, 3662 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:29:16,764 INFO L231 Difference]: Finished difference. Result has 147 places, 223 transitions, 2761 flow [2024-05-12 13:29:16,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2761, PETRI_PLACES=147, PETRI_TRANSITIONS=223} [2024-05-12 13:29:16,765 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-05-12 13:29:16,765 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 223 transitions, 2761 flow [2024-05-12 13:29:16,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:16,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:16,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:16,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:29:16,766 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:16,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1124272498, now seen corresponding path program 3 times [2024-05-12 13:29:16,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:16,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265819288] [2024-05-12 13:29:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:16,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:17,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:17,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265819288] [2024-05-12 13:29:17,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265819288] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:17,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:17,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:17,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490881963] [2024-05-12 13:29:17,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:17,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:17,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:17,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:17,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 223 transitions, 2761 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:17,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:17,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:17,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:19,124 INFO L124 PetriNetUnfolderBase]: 6609/9718 cut-off events. [2024-05-12 13:29:19,124 INFO L125 PetriNetUnfolderBase]: For 167031/167046 co-relation queries the response was YES. [2024-05-12 13:29:19,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59640 conditions, 9718 events. 6609/9718 cut-off events. For 167031/167046 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 56368 event pairs, 1109 based on Foata normal form. 10/9634 useless extension candidates. Maximal degree in co-relation 59568. Up to 7818 conditions per place. [2024-05-12 13:29:19,204 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 219 selfloop transitions, 74 changer transitions 0/301 dead transitions. [2024-05-12 13:29:19,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 301 transitions, 4180 flow [2024-05-12 13:29:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:19,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-05-12 13:29:19,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-05-12 13:29:19,206 INFO L175 Difference]: Start difference. First operand has 147 places, 223 transitions, 2761 flow. Second operand 8 states and 206 transitions. [2024-05-12 13:29:19,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 301 transitions, 4180 flow [2024-05-12 13:29:19,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 301 transitions, 3980 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-05-12 13:29:19,437 INFO L231 Difference]: Finished difference. Result has 152 places, 231 transitions, 2876 flow [2024-05-12 13:29:19,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2876, PETRI_PLACES=152, PETRI_TRANSITIONS=231} [2024-05-12 13:29:19,438 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-05-12 13:29:19,438 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 231 transitions, 2876 flow [2024-05-12 13:29:19,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:19,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:19,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:19,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:29:19,439 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:19,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:19,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1008981328, now seen corresponding path program 4 times [2024-05-12 13:29:19,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:19,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115928414] [2024-05-12 13:29:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:19,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:20,143 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 13:29:20,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:20,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115928414] [2024-05-12 13:29:20,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115928414] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:20,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:20,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:20,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214025152] [2024-05-12 13:29:20,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:20,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:20,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:20,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:20,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:20,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:20,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 231 transitions, 2876 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:20,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:20,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:20,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:21,721 INFO L124 PetriNetUnfolderBase]: 6693/9830 cut-off events. [2024-05-12 13:29:21,722 INFO L125 PetriNetUnfolderBase]: For 179707/179722 co-relation queries the response was YES. [2024-05-12 13:29:21,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61227 conditions, 9830 events. 6693/9830 cut-off events. For 179707/179722 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 57015 event pairs, 1069 based on Foata normal form. 10/9746 useless extension candidates. Maximal degree in co-relation 61153. Up to 7820 conditions per place. [2024-05-12 13:29:21,839 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 227 selfloop transitions, 81 changer transitions 0/316 dead transitions. [2024-05-12 13:29:21,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 316 transitions, 4451 flow [2024-05-12 13:29:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-05-12 13:29:21,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2024-05-12 13:29:21,841 INFO L175 Difference]: Start difference. First operand has 152 places, 231 transitions, 2876 flow. Second operand 8 states and 214 transitions. [2024-05-12 13:29:21,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 316 transitions, 4451 flow [2024-05-12 13:29:22,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 316 transitions, 4340 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-05-12 13:29:22,106 INFO L231 Difference]: Finished difference. Result has 160 places, 245 transitions, 3282 flow [2024-05-12 13:29:22,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3282, PETRI_PLACES=160, PETRI_TRANSITIONS=245} [2024-05-12 13:29:22,107 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 107 predicate places. [2024-05-12 13:29:22,107 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 245 transitions, 3282 flow [2024-05-12 13:29:22,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:22,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:22,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:22,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:29:22,108 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:22,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1990049440, now seen corresponding path program 5 times [2024-05-12 13:29:22,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:22,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706110976] [2024-05-12 13:29:22,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:22,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706110976] [2024-05-12 13:29:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706110976] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:22,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:22,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739598814] [2024-05-12 13:29:22,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:23,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:23,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:23,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:23,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:23,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 245 transitions, 3282 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:23,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:23,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:23,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:24,748 INFO L124 PetriNetUnfolderBase]: 6853/10429 cut-off events. [2024-05-12 13:29:24,748 INFO L125 PetriNetUnfolderBase]: For 202161/202176 co-relation queries the response was YES. [2024-05-12 13:29:24,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66005 conditions, 10429 events. 6853/10429 cut-off events. For 202161/202176 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 64358 event pairs, 1501 based on Foata normal form. 14/10234 useless extension candidates. Maximal degree in co-relation 65926. Up to 7443 conditions per place. [2024-05-12 13:29:24,857 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 220 selfloop transitions, 87 changer transitions 0/315 dead transitions. [2024-05-12 13:29:24,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 315 transitions, 4429 flow [2024-05-12 13:29:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:24,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-05-12 13:29:24,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-05-12 13:29:24,858 INFO L175 Difference]: Start difference. First operand has 160 places, 245 transitions, 3282 flow. Second operand 8 states and 212 transitions. [2024-05-12 13:29:24,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 315 transitions, 4429 flow [2024-05-12 13:29:25,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 315 transitions, 4186 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:25,183 INFO L231 Difference]: Finished difference. Result has 163 places, 252 transitions, 3370 flow [2024-05-12 13:29:25,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3061, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3370, PETRI_PLACES=163, PETRI_TRANSITIONS=252} [2024-05-12 13:29:25,184 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-05-12 13:29:25,184 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 252 transitions, 3370 flow [2024-05-12 13:29:25,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:25,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:25,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:25,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:29:25,185 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:25,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1989869516, now seen corresponding path program 1 times [2024-05-12 13:29:25,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:25,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546256556] [2024-05-12 13:29:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:25,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:25,994 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 13:29:25,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:25,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546256556] [2024-05-12 13:29:25,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546256556] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:25,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:25,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:25,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404813813] [2024-05-12 13:29:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:25,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:25,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:26,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:26,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 252 transitions, 3370 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 13:29:26,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:26,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:27,751 INFO L124 PetriNetUnfolderBase]: 7333/11145 cut-off events. [2024-05-12 13:29:27,751 INFO L125 PetriNetUnfolderBase]: For 237535/237550 co-relation queries the response was YES. [2024-05-12 13:29:27,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70130 conditions, 11145 events. 7333/11145 cut-off events. For 237535/237550 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 69251 event pairs, 1577 based on Foata normal form. 40/10976 useless extension candidates. Maximal degree in co-relation 70051. Up to 7761 conditions per place. [2024-05-12 13:29:27,860 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 234 selfloop transitions, 77 changer transitions 0/319 dead transitions. [2024-05-12 13:29:27,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 319 transitions, 4490 flow [2024-05-12 13:29:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-05-12 13:29:27,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664893617021277 [2024-05-12 13:29:27,861 INFO L175 Difference]: Start difference. First operand has 163 places, 252 transitions, 3370 flow. Second operand 8 states and 213 transitions. [2024-05-12 13:29:27,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 319 transitions, 4490 flow [2024-05-12 13:29:28,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 319 transitions, 4253 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:28,202 INFO L231 Difference]: Finished difference. Result has 165 places, 255 transitions, 3379 flow [2024-05-12 13:29:28,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3379, PETRI_PLACES=165, PETRI_TRANSITIONS=255} [2024-05-12 13:29:28,203 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 112 predicate places. [2024-05-12 13:29:28,203 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 255 transitions, 3379 flow [2024-05-12 13:29:28,203 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 13:29:28,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:28,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:28,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:29:28,204 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:28,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:28,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1008803698, now seen corresponding path program 6 times [2024-05-12 13:29:28,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:28,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942238991] [2024-05-12 13:29:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:28,871 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 13:29:28,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:28,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942238991] [2024-05-12 13:29:28,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942238991] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:28,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689998656] [2024-05-12 13:29:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:28,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:28,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:28,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:28,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 255 transitions, 3379 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:28,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:28,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:28,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:30,649 INFO L124 PetriNetUnfolderBase]: 7477/10966 cut-off events. [2024-05-12 13:29:30,649 INFO L125 PetriNetUnfolderBase]: For 243300/243315 co-relation queries the response was YES. [2024-05-12 13:29:30,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72101 conditions, 10966 events. 7477/10966 cut-off events. For 243300/243315 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 64463 event pairs, 1134 based on Foata normal form. 10/10882 useless extension candidates. Maximal degree in co-relation 72021. Up to 9186 conditions per place. [2024-05-12 13:29:30,786 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 237 selfloop transitions, 84 changer transitions 0/329 dead transitions. [2024-05-12 13:29:30,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 329 transitions, 4817 flow [2024-05-12 13:29:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-05-12 13:29:30,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-05-12 13:29:30,788 INFO L175 Difference]: Start difference. First operand has 165 places, 255 transitions, 3379 flow. Second operand 8 states and 202 transitions. [2024-05-12 13:29:30,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 329 transitions, 4817 flow [2024-05-12 13:29:31,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 329 transitions, 4654 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:31,300 INFO L231 Difference]: Finished difference. Result has 170 places, 274 transitions, 3929 flow [2024-05-12 13:29:31,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3216, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3929, PETRI_PLACES=170, PETRI_TRANSITIONS=274} [2024-05-12 13:29:31,301 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 117 predicate places. [2024-05-12 13:29:31,301 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 274 transitions, 3929 flow [2024-05-12 13:29:31,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:31,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:31,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:29:31,302 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:31,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash 729001088, now seen corresponding path program 1 times [2024-05-12 13:29:31,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:31,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323404617] [2024-05-12 13:29:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:31,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:31,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323404617] [2024-05-12 13:29:31,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323404617] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:31,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:31,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:31,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000990192] [2024-05-12 13:29:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:31,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:31,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:31,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:31,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 274 transitions, 3929 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:31,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:31,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:31,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:33,535 INFO L124 PetriNetUnfolderBase]: 7528/11430 cut-off events. [2024-05-12 13:29:33,536 INFO L125 PetriNetUnfolderBase]: For 250891/250891 co-relation queries the response was YES. [2024-05-12 13:29:33,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73007 conditions, 11430 events. 7528/11430 cut-off events. For 250891/250891 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 71218 event pairs, 1862 based on Foata normal form. 3/11213 useless extension candidates. Maximal degree in co-relation 72924. Up to 10552 conditions per place. [2024-05-12 13:29:33,631 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 279 selfloop transitions, 22 changer transitions 0/309 dead transitions. [2024-05-12 13:29:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 309 transitions, 4802 flow [2024-05-12 13:29:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-05-12 13:29:33,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:29:33,632 INFO L175 Difference]: Start difference. First operand has 170 places, 274 transitions, 3929 flow. Second operand 6 states and 141 transitions. [2024-05-12 13:29:33,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 309 transitions, 4802 flow [2024-05-12 13:29:34,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 309 transitions, 4597 flow, removed 90 selfloop flow, removed 2 redundant places. [2024-05-12 13:29:34,128 INFO L231 Difference]: Finished difference. Result has 174 places, 279 transitions, 3871 flow [2024-05-12 13:29:34,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3871, PETRI_PLACES=174, PETRI_TRANSITIONS=279} [2024-05-12 13:29:34,129 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-05-12 13:29:34,129 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 279 transitions, 3871 flow [2024-05-12 13:29:34,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:34,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:34,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:34,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:29:34,130 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:34,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1850989452, now seen corresponding path program 2 times [2024-05-12 13:29:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:34,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817105956] [2024-05-12 13:29:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:34,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:34,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817105956] [2024-05-12 13:29:34,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817105956] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:34,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:34,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:34,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294616738] [2024-05-12 13:29:34,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:34,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:34,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:34,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:34,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:35,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:35,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 279 transitions, 3871 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 13:29:35,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:35,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:35,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:36,990 INFO L124 PetriNetUnfolderBase]: 7964/12056 cut-off events. [2024-05-12 13:29:36,991 INFO L125 PetriNetUnfolderBase]: For 276678/276678 co-relation queries the response was YES. [2024-05-12 13:29:37,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76991 conditions, 12056 events. 7964/12056 cut-off events. For 276678/276678 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 75386 event pairs, 2101 based on Foata normal form. 22/11878 useless extension candidates. Maximal degree in co-relation 76906. Up to 10298 conditions per place. [2024-05-12 13:29:37,126 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 290 selfloop transitions, 54 changer transitions 0/352 dead transitions. [2024-05-12 13:29:37,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 352 transitions, 5180 flow [2024-05-12 13:29:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-05-12 13:29:37,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-05-12 13:29:37,128 INFO L175 Difference]: Start difference. First operand has 174 places, 279 transitions, 3871 flow. Second operand 8 states and 201 transitions. [2024-05-12 13:29:37,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 352 transitions, 5180 flow [2024-05-12 13:29:37,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 352 transitions, 4905 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-05-12 13:29:37,632 INFO L231 Difference]: Finished difference. Result has 179 places, 297 transitions, 4088 flow [2024-05-12 13:29:37,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4088, PETRI_PLACES=179, PETRI_TRANSITIONS=297} [2024-05-12 13:29:37,632 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-05-12 13:29:37,632 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 297 transitions, 4088 flow [2024-05-12 13:29:37,633 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 13:29:37,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:37,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:37,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:29:37,633 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:37,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:37,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1585889232, now seen corresponding path program 3 times [2024-05-12 13:29:37,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:37,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007009826] [2024-05-12 13:29:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:37,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007009826] [2024-05-12 13:29:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007009826] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:38,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:38,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:38,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701463054] [2024-05-12 13:29:38,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:38,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:38,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:38,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 297 transitions, 4088 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 13:29:38,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:38,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:38,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:40,280 INFO L124 PetriNetUnfolderBase]: 8142/12342 cut-off events. [2024-05-12 13:29:40,280 INFO L125 PetriNetUnfolderBase]: For 305392/305392 co-relation queries the response was YES. [2024-05-12 13:29:40,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84233 conditions, 12342 events. 8142/12342 cut-off events. For 305392/305392 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 77568 event pairs, 2147 based on Foata normal form. 14/12154 useless extension candidates. Maximal degree in co-relation 84144. Up to 11210 conditions per place. [2024-05-12 13:29:40,425 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 302 selfloop transitions, 35 changer transitions 0/345 dead transitions. [2024-05-12 13:29:40,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 345 transitions, 5074 flow [2024-05-12 13:29:40,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:29:40,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:29:40,427 INFO L175 Difference]: Start difference. First operand has 179 places, 297 transitions, 4088 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:29:40,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 345 transitions, 5074 flow [2024-05-12 13:29:41,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 345 transitions, 4902 flow, removed 60 selfloop flow, removed 2 redundant places. [2024-05-12 13:29:41,054 INFO L231 Difference]: Finished difference. Result has 186 places, 303 transitions, 4126 flow [2024-05-12 13:29:41,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3916, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4126, PETRI_PLACES=186, PETRI_TRANSITIONS=303} [2024-05-12 13:29:41,054 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2024-05-12 13:29:41,055 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 303 transitions, 4126 flow [2024-05-12 13:29:41,055 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 13:29:41,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:41,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:41,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:29:41,055 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:41,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1586214732, now seen corresponding path program 4 times [2024-05-12 13:29:41,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:41,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795571745] [2024-05-12 13:29:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:41,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:41,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:41,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795571745] [2024-05-12 13:29:41,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795571745] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:41,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:41,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:29:41,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133157377] [2024-05-12 13:29:41,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:41,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:29:41,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:29:41,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:29:41,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:41,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 303 transitions, 4126 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 13:29:41,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:41,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:41,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:44,018 INFO L124 PetriNetUnfolderBase]: 8345/12639 cut-off events. [2024-05-12 13:29:44,018 INFO L125 PetriNetUnfolderBase]: For 316453/316453 co-relation queries the response was YES. [2024-05-12 13:29:44,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86097 conditions, 12639 events. 8345/12639 cut-off events. For 316453/316453 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 79802 event pairs, 2290 based on Foata normal form. 18/12456 useless extension candidates. Maximal degree in co-relation 86004. Up to 11269 conditions per place. [2024-05-12 13:29:44,178 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 302 selfloop transitions, 43 changer transitions 0/353 dead transitions. [2024-05-12 13:29:44,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 353 transitions, 5169 flow [2024-05-12 13:29:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:44,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:29:44,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-05-12 13:29:44,180 INFO L175 Difference]: Start difference. First operand has 186 places, 303 transitions, 4126 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:29:44,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 353 transitions, 5169 flow [2024-05-12 13:29:44,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 353 transitions, 5013 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:44,961 INFO L231 Difference]: Finished difference. Result has 189 places, 305 transitions, 4154 flow [2024-05-12 13:29:44,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3970, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4154, PETRI_PLACES=189, PETRI_TRANSITIONS=305} [2024-05-12 13:29:44,962 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 136 predicate places. [2024-05-12 13:29:44,962 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 305 transitions, 4154 flow [2024-05-12 13:29:44,962 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 13:29:44,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:44,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:44,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:29:44,962 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:44,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1595389616, now seen corresponding path program 7 times [2024-05-12 13:29:44,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:44,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180157081] [2024-05-12 13:29:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:44,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:45,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:45,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180157081] [2024-05-12 13:29:45,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180157081] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:45,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:45,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:45,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015039140] [2024-05-12 13:29:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:45,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:45,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:45,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:45,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:45,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 305 transitions, 4154 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:45,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:45,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:45,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:48,219 INFO L124 PetriNetUnfolderBase]: 8482/12831 cut-off events. [2024-05-12 13:29:48,219 INFO L125 PetriNetUnfolderBase]: For 323390/323402 co-relation queries the response was YES. [2024-05-12 13:29:48,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87065 conditions, 12831 events. 8482/12831 cut-off events. For 323390/323402 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 80960 event pairs, 2305 based on Foata normal form. 18/12645 useless extension candidates. Maximal degree in co-relation 86971. Up to 11535 conditions per place. [2024-05-12 13:29:48,388 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 313 selfloop transitions, 39 changer transitions 0/360 dead transitions. [2024-05-12 13:29:48,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 360 transitions, 5280 flow [2024-05-12 13:29:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:29:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:29:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-05-12 13:29:48,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-05-12 13:29:48,390 INFO L175 Difference]: Start difference. First operand has 189 places, 305 transitions, 4154 flow. Second operand 8 states and 195 transitions. [2024-05-12 13:29:48,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 360 transitions, 5280 flow [2024-05-12 13:29:48,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 360 transitions, 5138 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:48,997 INFO L231 Difference]: Finished difference. Result has 192 places, 312 transitions, 4263 flow [2024-05-12 13:29:48,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4012, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4263, PETRI_PLACES=192, PETRI_TRANSITIONS=312} [2024-05-12 13:29:48,998 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-05-12 13:29:48,998 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 312 transitions, 4263 flow [2024-05-12 13:29:48,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:48,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:48,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:48,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:29:48,999 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:48,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash 360128794, now seen corresponding path program 1 times [2024-05-12 13:29:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:49,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803724479] [2024-05-12 13:29:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:49,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:49,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:49,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803724479] [2024-05-12 13:29:49,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803724479] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:49,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:49,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:29:49,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020588615] [2024-05-12 13:29:49,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:49,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:29:49,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:49,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:29:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:29:49,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:49,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 312 transitions, 4263 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:49,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:49,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:49,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:52,225 INFO L124 PetriNetUnfolderBase]: 8539/12982 cut-off events. [2024-05-12 13:29:52,226 INFO L125 PetriNetUnfolderBase]: For 324192/324204 co-relation queries the response was YES. [2024-05-12 13:29:52,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87549 conditions, 12982 events. 8539/12982 cut-off events. For 324192/324204 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 82635 event pairs, 2301 based on Foata normal form. 13/12772 useless extension candidates. Maximal degree in co-relation 87453. Up to 11613 conditions per place. [2024-05-12 13:29:52,409 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 297 selfloop transitions, 51 changer transitions 0/356 dead transitions. [2024-05-12 13:29:52,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 356 transitions, 5317 flow [2024-05-12 13:29:52,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:29:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:29:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-05-12 13:29:52,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-05-12 13:29:52,410 INFO L175 Difference]: Start difference. First operand has 192 places, 312 transitions, 4263 flow. Second operand 7 states and 171 transitions. [2024-05-12 13:29:52,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 356 transitions, 5317 flow [2024-05-12 13:29:53,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 356 transitions, 5145 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:53,023 INFO L231 Difference]: Finished difference. Result has 194 places, 318 transitions, 4351 flow [2024-05-12 13:29:53,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4351, PETRI_PLACES=194, PETRI_TRANSITIONS=318} [2024-05-12 13:29:53,024 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2024-05-12 13:29:53,024 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 318 transitions, 4351 flow [2024-05-12 13:29:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:53,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:53,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:53,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:29:53,025 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:53,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1060282830, now seen corresponding path program 2 times [2024-05-12 13:29:53,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89120211] [2024-05-12 13:29:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:53,553 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 13:29:53,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:53,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89120211] [2024-05-12 13:29:53,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89120211] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:53,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:53,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:53,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946473705] [2024-05-12 13:29:53,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:53,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:53,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:53,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:53,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:53,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 318 transitions, 4351 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:53,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:53,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:53,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:55,674 INFO L124 PetriNetUnfolderBase]: 8530/12920 cut-off events. [2024-05-12 13:29:55,674 INFO L125 PetriNetUnfolderBase]: For 326839/326839 co-relation queries the response was YES. [2024-05-12 13:29:55,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87842 conditions, 12920 events. 8530/12920 cut-off events. For 326839/326839 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 81766 event pairs, 2403 based on Foata normal form. 3/12715 useless extension candidates. Maximal degree in co-relation 87745. Up to 12054 conditions per place. [2024-05-12 13:29:55,804 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 314 selfloop transitions, 15 changer transitions 0/337 dead transitions. [2024-05-12 13:29:55,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 337 transitions, 5086 flow [2024-05-12 13:29:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-05-12 13:29:55,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574468085106383 [2024-05-12 13:29:55,805 INFO L175 Difference]: Start difference. First operand has 194 places, 318 transitions, 4351 flow. Second operand 6 states and 129 transitions. [2024-05-12 13:29:55,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 337 transitions, 5086 flow [2024-05-12 13:29:56,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 337 transitions, 4904 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-05-12 13:29:56,328 INFO L231 Difference]: Finished difference. Result has 195 places, 318 transitions, 4207 flow [2024-05-12 13:29:56,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4169, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4207, PETRI_PLACES=195, PETRI_TRANSITIONS=318} [2024-05-12 13:29:56,329 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 142 predicate places. [2024-05-12 13:29:56,329 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 318 transitions, 4207 flow [2024-05-12 13:29:56,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:56,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:56,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:56,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:29:56,334 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:56,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:56,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1193561563, now seen corresponding path program 1 times [2024-05-12 13:29:56,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:56,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962255080] [2024-05-12 13:29:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:56,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:29:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:29:56,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:29:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962255080] [2024-05-12 13:29:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962255080] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:29:56,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:29:56,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:29:56,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794723009] [2024-05-12 13:29:56,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:29:56,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:29:56,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:29:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:29:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:29:56,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:29:56,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 318 transitions, 4207 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:56,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:29:56,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:29:56,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:29:58,917 INFO L124 PetriNetUnfolderBase]: 8563/13063 cut-off events. [2024-05-12 13:29:58,917 INFO L125 PetriNetUnfolderBase]: For 330450/330450 co-relation queries the response was YES. [2024-05-12 13:29:59,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87657 conditions, 13063 events. 8563/13063 cut-off events. For 330450/330450 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 83810 event pairs, 2344 based on Foata normal form. 9/12839 useless extension candidates. Maximal degree in co-relation 87559. Up to 11766 conditions per place. [2024-05-12 13:29:59,277 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 308 selfloop transitions, 46 changer transitions 0/362 dead transitions. [2024-05-12 13:29:59,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 362 transitions, 5339 flow [2024-05-12 13:29:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:29:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:29:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-05-12 13:29:59,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-05-12 13:29:59,278 INFO L175 Difference]: Start difference. First operand has 195 places, 318 transitions, 4207 flow. Second operand 6 states and 145 transitions. [2024-05-12 13:29:59,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 362 transitions, 5339 flow [2024-05-12 13:29:59,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 362 transitions, 5276 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 13:29:59,772 INFO L231 Difference]: Finished difference. Result has 195 places, 325 transitions, 4400 flow [2024-05-12 13:29:59,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4400, PETRI_PLACES=195, PETRI_TRANSITIONS=325} [2024-05-12 13:29:59,773 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 142 predicate places. [2024-05-12 13:29:59,773 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 325 transitions, 4400 flow [2024-05-12 13:29:59,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:29:59,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:29:59,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:29:59,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:29:59,774 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:29:59,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:29:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1060289743, now seen corresponding path program 2 times [2024-05-12 13:29:59,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:29:59,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302730960] [2024-05-12 13:29:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:29:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:29:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:00,248 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 13:30:00,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:00,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302730960] [2024-05-12 13:30:00,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302730960] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:00,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:00,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:30:00,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133996799] [2024-05-12 13:30:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:00,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:30:00,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:30:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:30:00,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:00,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 325 transitions, 4400 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:00,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:00,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:00,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:02,696 INFO L124 PetriNetUnfolderBase]: 8443/12873 cut-off events. [2024-05-12 13:30:02,696 INFO L125 PetriNetUnfolderBase]: For 332550/332562 co-relation queries the response was YES. [2024-05-12 13:30:02,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86887 conditions, 12873 events. 8443/12873 cut-off events. For 332550/332562 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 82309 event pairs, 2354 based on Foata normal form. 6/12647 useless extension candidates. Maximal degree in co-relation 86790. Up to 11590 conditions per place. [2024-05-12 13:30:02,864 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 304 selfloop transitions, 48 changer transitions 0/360 dead transitions. [2024-05-12 13:30:02,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 360 transitions, 5322 flow [2024-05-12 13:30:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:30:02,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:30:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-05-12 13:30:02,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:30:02,870 INFO L175 Difference]: Start difference. First operand has 195 places, 325 transitions, 4400 flow. Second operand 6 states and 142 transitions. [2024-05-12 13:30:02,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 360 transitions, 5322 flow [2024-05-12 13:30:03,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 360 transitions, 5222 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-05-12 13:30:03,528 INFO L231 Difference]: Finished difference. Result has 198 places, 325 transitions, 4408 flow [2024-05-12 13:30:03,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4300, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4408, PETRI_PLACES=198, PETRI_TRANSITIONS=325} [2024-05-12 13:30:03,529 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-05-12 13:30:03,529 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 325 transitions, 4408 flow [2024-05-12 13:30:03,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:30:03,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:03,530 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 13:30:03,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:30:03,530 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:03,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash -581277685, now seen corresponding path program 1 times [2024-05-12 13:30:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:03,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908097608] [2024-05-12 13:30:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:03,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:04,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908097608] [2024-05-12 13:30:04,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908097608] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:04,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:04,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:30:04,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422039831] [2024-05-12 13:30:04,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:04,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:30:04,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:30:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:30:04,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:04,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 325 transitions, 4408 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:04,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:04,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:04,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:06,960 INFO L124 PetriNetUnfolderBase]: 9040/13343 cut-off events. [2024-05-12 13:30:06,960 INFO L125 PetriNetUnfolderBase]: For 403217/403229 co-relation queries the response was YES. [2024-05-12 13:30:07,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94259 conditions, 13343 events. 9040/13343 cut-off events. For 403217/403229 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 81616 event pairs, 1104 based on Foata normal form. 27/13246 useless extension candidates. Maximal degree in co-relation 94161. Up to 8872 conditions per place. [2024-05-12 13:30:07,095 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 302 selfloop transitions, 106 changer transitions 0/416 dead transitions. [2024-05-12 13:30:07,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 416 transitions, 6401 flow [2024-05-12 13:30:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:30:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:30:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-05-12 13:30:07,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-05-12 13:30:07,100 INFO L175 Difference]: Start difference. First operand has 198 places, 325 transitions, 4408 flow. Second operand 9 states and 240 transitions. [2024-05-12 13:30:07,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 416 transitions, 6401 flow [2024-05-12 13:30:07,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 416 transitions, 6222 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 13:30:07,793 INFO L231 Difference]: Finished difference. Result has 203 places, 331 transitions, 4652 flow [2024-05-12 13:30:07,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4652, PETRI_PLACES=203, PETRI_TRANSITIONS=331} [2024-05-12 13:30:07,795 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-05-12 13:30:07,795 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 331 transitions, 4652 flow [2024-05-12 13:30:07,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:07,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:07,796 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 13:30:07,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:30:07,796 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:07,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:07,812 INFO L85 PathProgramCache]: Analyzing trace with hash -579403735, now seen corresponding path program 2 times [2024-05-12 13:30:07,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:07,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748542667] [2024-05-12 13:30:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:07,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:08,673 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 13:30:08,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:08,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748542667] [2024-05-12 13:30:08,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748542667] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:08,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:08,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:30:08,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630058802] [2024-05-12 13:30:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:30:08,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:30:08,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:30:08,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:08,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 331 transitions, 4652 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:08,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:08,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:08,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:12,152 INFO L124 PetriNetUnfolderBase]: 12495/18916 cut-off events. [2024-05-12 13:30:12,152 INFO L125 PetriNetUnfolderBase]: For 691454/691466 co-relation queries the response was YES. [2024-05-12 13:30:12,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135481 conditions, 18916 events. 12495/18916 cut-off events. For 691454/691466 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 127585 event pairs, 2476 based on Foata normal form. 83/18742 useless extension candidates. Maximal degree in co-relation 135380. Up to 9682 conditions per place. [2024-05-12 13:30:12,448 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 346 selfloop transitions, 131 changer transitions 0/485 dead transitions. [2024-05-12 13:30:12,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 485 transitions, 7527 flow [2024-05-12 13:30:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:30:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:30:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 281 transitions. [2024-05-12 13:30:12,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.597872340425532 [2024-05-12 13:30:12,450 INFO L175 Difference]: Start difference. First operand has 203 places, 331 transitions, 4652 flow. Second operand 10 states and 281 transitions. [2024-05-12 13:30:12,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 485 transitions, 7527 flow [2024-05-12 13:30:13,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 485 transitions, 7293 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-05-12 13:30:13,999 INFO L231 Difference]: Finished difference. Result has 212 places, 371 transitions, 5519 flow [2024-05-12 13:30:13,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5519, PETRI_PLACES=212, PETRI_TRANSITIONS=371} [2024-05-12 13:30:13,999 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 159 predicate places. [2024-05-12 13:30:14,000 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 371 transitions, 5519 flow [2024-05-12 13:30:14,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:14,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:14,000 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 13:30:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:30:14,000 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:14,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -927884565, now seen corresponding path program 3 times [2024-05-12 13:30:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538329872] [2024-05-12 13:30:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:14,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:14,708 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 13:30:14,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:14,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538329872] [2024-05-12 13:30:14,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538329872] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:14,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:14,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:30:14,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207985710] [2024-05-12 13:30:14,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:14,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:30:14,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:30:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:30:14,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:14,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 371 transitions, 5519 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:14,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:14,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:14,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:19,614 INFO L124 PetriNetUnfolderBase]: 12875/19073 cut-off events. [2024-05-12 13:30:19,615 INFO L125 PetriNetUnfolderBase]: For 744908/744920 co-relation queries the response was YES. [2024-05-12 13:30:19,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147867 conditions, 19073 events. 12875/19073 cut-off events. For 744908/744920 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 125624 event pairs, 2845 based on Foata normal form. 33/18982 useless extension candidates. Maximal degree in co-relation 147761. Up to 15800 conditions per place. [2024-05-12 13:30:19,842 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 311 selfloop transitions, 131 changer transitions 0/450 dead transitions. [2024-05-12 13:30:19,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 450 transitions, 7269 flow [2024-05-12 13:30:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:30:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:30:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-05-12 13:30:19,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-05-12 13:30:19,849 INFO L175 Difference]: Start difference. First operand has 212 places, 371 transitions, 5519 flow. Second operand 9 states and 234 transitions. [2024-05-12 13:30:19,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 450 transitions, 7269 flow [2024-05-12 13:30:21,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 450 transitions, 7053 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-05-12 13:30:21,902 INFO L231 Difference]: Finished difference. Result has 217 places, 374 transitions, 5681 flow [2024-05-12 13:30:21,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5303, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5681, PETRI_PLACES=217, PETRI_TRANSITIONS=374} [2024-05-12 13:30:21,903 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-05-12 13:30:21,903 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 374 transitions, 5681 flow [2024-05-12 13:30:21,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:21,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:21,904 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 13:30:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:30:21,904 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:21,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash -841048605, now seen corresponding path program 4 times [2024-05-12 13:30:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:21,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138802875] [2024-05-12 13:30:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:22,780 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 13:30:22,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:22,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138802875] [2024-05-12 13:30:22,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138802875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:22,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:22,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:30:22,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539375004] [2024-05-12 13:30:22,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:22,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:30:22,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:30:22,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:30:22,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:22,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 374 transitions, 5681 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:22,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:22,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:22,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:27,432 INFO L124 PetriNetUnfolderBase]: 13874/21369 cut-off events. [2024-05-12 13:30:27,435 INFO L125 PetriNetUnfolderBase]: For 824433/824445 co-relation queries the response was YES. [2024-05-12 13:30:27,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157250 conditions, 21369 events. 13874/21369 cut-off events. For 824433/824445 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 150414 event pairs, 3803 based on Foata normal form. 99/21091 useless extension candidates. Maximal degree in co-relation 157142. Up to 15722 conditions per place. [2024-05-12 13:30:27,805 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 361 selfloop transitions, 90 changer transitions 0/459 dead transitions. [2024-05-12 13:30:27,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 459 transitions, 7385 flow [2024-05-12 13:30:27,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:30:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:30:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-05-12 13:30:27,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2024-05-12 13:30:27,824 INFO L175 Difference]: Start difference. First operand has 217 places, 374 transitions, 5681 flow. Second operand 9 states and 241 transitions. [2024-05-12 13:30:27,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 459 transitions, 7385 flow [2024-05-12 13:30:29,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 459 transitions, 7064 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-05-12 13:30:29,654 INFO L231 Difference]: Finished difference. Result has 220 places, 381 transitions, 5757 flow [2024-05-12 13:30:29,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5374, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5757, PETRI_PLACES=220, PETRI_TRANSITIONS=381} [2024-05-12 13:30:29,654 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 167 predicate places. [2024-05-12 13:30:29,655 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 381 transitions, 5757 flow [2024-05-12 13:30:29,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:29,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:29,655 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 13:30:29,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:30:29,655 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:29,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash -492708205, now seen corresponding path program 5 times [2024-05-12 13:30:29,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:29,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219341627] [2024-05-12 13:30:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:30:30,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:30,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219341627] [2024-05-12 13:30:30,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219341627] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:30,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:30,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:30:30,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660202667] [2024-05-12 13:30:30,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:30,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:30:30,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:30,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:30:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:30:30,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:30,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 381 transitions, 5757 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:30,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:30,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:30,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:34,989 INFO L124 PetriNetUnfolderBase]: 14051/20809 cut-off events. [2024-05-12 13:30:34,989 INFO L125 PetriNetUnfolderBase]: For 774715/774727 co-relation queries the response was YES. [2024-05-12 13:30:35,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157480 conditions, 20809 events. 14051/20809 cut-off events. For 774715/774727 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 139073 event pairs, 3306 based on Foata normal form. 33/20729 useless extension candidates. Maximal degree in co-relation 157370. Up to 18300 conditions per place. [2024-05-12 13:30:35,540 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 346 selfloop transitions, 102 changer transitions 0/456 dead transitions. [2024-05-12 13:30:35,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 456 transitions, 7461 flow [2024-05-12 13:30:35,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:30:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:30:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-05-12 13:30:35,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-05-12 13:30:35,549 INFO L175 Difference]: Start difference. First operand has 220 places, 381 transitions, 5757 flow. Second operand 9 states and 230 transitions. [2024-05-12 13:30:35,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 456 transitions, 7461 flow [2024-05-12 13:30:38,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 456 transitions, 7217 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-05-12 13:30:38,255 INFO L231 Difference]: Finished difference. Result has 223 places, 384 transitions, 5843 flow [2024-05-12 13:30:38,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5513, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5843, PETRI_PLACES=223, PETRI_TRANSITIONS=384} [2024-05-12 13:30:38,256 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 170 predicate places. [2024-05-12 13:30:38,256 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 384 transitions, 5843 flow [2024-05-12 13:30:38,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:38,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:38,257 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 13:30:38,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:30:38,257 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:38,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1123899971, now seen corresponding path program 1 times [2024-05-12 13:30:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:38,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318540624] [2024-05-12 13:30:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:38,940 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 13:30:38,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:38,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318540624] [2024-05-12 13:30:38,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318540624] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:38,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:38,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:30:38,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987480366] [2024-05-12 13:30:38,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:38,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:30:38,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:38,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:30:38,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:30:38,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:38,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 384 transitions, 5843 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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 13:30:38,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:38,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:38,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:30:43,474 INFO L124 PetriNetUnfolderBase]: 14255/22152 cut-off events. [2024-05-12 13:30:43,474 INFO L125 PetriNetUnfolderBase]: For 746578/746590 co-relation queries the response was YES. [2024-05-12 13:30:43,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158756 conditions, 22152 events. 14255/22152 cut-off events. For 746578/746590 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 158548 event pairs, 3839 based on Foata normal form. 15/21709 useless extension candidates. Maximal degree in co-relation 158645. Up to 18381 conditions per place. [2024-05-12 13:30:43,857 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 343 selfloop transitions, 94 changer transitions 0/445 dead transitions. [2024-05-12 13:30:43,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 445 transitions, 7397 flow [2024-05-12 13:30:43,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:30:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:30:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-05-12 13:30:43,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-05-12 13:30:43,859 INFO L175 Difference]: Start difference. First operand has 223 places, 384 transitions, 5843 flow. Second operand 7 states and 182 transitions. [2024-05-12 13:30:43,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 445 transitions, 7397 flow [2024-05-12 13:30:45,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 445 transitions, 7116 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-05-12 13:30:45,968 INFO L231 Difference]: Finished difference. Result has 223 places, 393 transitions, 5958 flow [2024-05-12 13:30:45,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5584, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5958, PETRI_PLACES=223, PETRI_TRANSITIONS=393} [2024-05-12 13:30:45,969 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 170 predicate places. [2024-05-12 13:30:45,969 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 393 transitions, 5958 flow [2024-05-12 13:30:45,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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 13:30:45,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:30:45,971 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 13:30:45,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:30:45,972 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:30:45,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:30:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1213652951, now seen corresponding path program 6 times [2024-05-12 13:30:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:30:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797060551] [2024-05-12 13:30:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:30:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:30:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:30:46,779 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 13:30:46,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:30:46,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797060551] [2024-05-12 13:30:46,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797060551] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:30:46,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:30:46,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:30:46,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97171183] [2024-05-12 13:30:46,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:30:46,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:30:46,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:30:46,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:30:46,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:30:46,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:30:46,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 393 transitions, 5958 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 13:30:46,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:30:46,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:30:46,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand