./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe004_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe004_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:49:52,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:49:52,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:49:52,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:49:52,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:49:52,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:49:52,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:49:52,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:49:52,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:49:52,150 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:49:52,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:49:52,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:49:52,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:49:52,153 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:49:52,153 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:49:52,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:49:52,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:49:52,154 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:49:52,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:49:52,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:49:52,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:49:52,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:49:52,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:49:52,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:49:52,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:49:52,157 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:49:52,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:49:52,157 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:49:52,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:49:52,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:49:52,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:49:52,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:49:52,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:49:52,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:49:52,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:49:52,161 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:49:52,161 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:49:52,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:49:52,161 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:49:52,162 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:49:52,162 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:49:52,162 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:49:52,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:49:52,163 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:49:52,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:49:52,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:49:52,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:49:52,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:49:52,499 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:49:52,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2024-06-27 18:49:53,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:49:53,906 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:49:53,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i [2024-06-27 18:49:53,919 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e430fc939/42c63bb830d245f89aff5b5c06155c4a/FLAG5da5dc483 [2024-06-27 18:49:53,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e430fc939/42c63bb830d245f89aff5b5c06155c4a [2024-06-27 18:49:53,933 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:49:53,934 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:49:53,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe004_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-27 18:49:54,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:49:54,133 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:49:54,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:49:54,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:49:54,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:49:54,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:49:53" (1/2) ... [2024-06-27 18:49:54,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6887820c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:54, skipping insertion in model container [2024-06-27 18:49:54,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:49:53" (1/2) ... [2024-06-27 18:49:54,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46b58cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:49:54, skipping insertion in model container [2024-06-27 18:49:54,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:54" (2/2) ... [2024-06-27 18:49:54,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6887820c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54, skipping insertion in model container [2024-06-27 18:49:54,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:54" (2/2) ... [2024-06-27 18:49:54,146 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:49:54,230 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:49:54,231 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-27 18:49:54,232 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-27 18:49:54,232 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-27 18:49:54,232 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:49:54,232 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-06-27 18:49:54,281 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:49:54,453 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] [2024-06-27 18:49:54,594 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:49:54,602 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:49:54,641 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.opt_pso.opt_rmo.opt.i[967,980] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:49:54,736 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:49:54,771 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:49:54,771 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54 WrapperNode [2024-06-27 18:49:54,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:49:54,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:49:54,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:49:54,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:49:54,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,826 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-27 18:49:54,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:49:54,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:49:54,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:49:54,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:49:54,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,900 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:49:54,900 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:49:54,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:49:54,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:49:54,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:49:54,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (1/1) ... [2024-06-27 18:49:54,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:49:54,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:49:54,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:49:54,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:49:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:49:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:49:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:49:55,017 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:49:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:49:55,018 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:49:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:49:55,018 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:49:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:49:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:49:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:49:55,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:49:55,021 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:49:55,162 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:49:55,165 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:49:55,490 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:49:55,491 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:49:55,664 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:49:55,664 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:49:55,665 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:49:55 BoogieIcfgContainer [2024-06-27 18:49:55,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:49:55,668 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:49:55,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:49:55,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:49:55,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:49:53" (1/4) ... [2024-06-27 18:49:55,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d654490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:49:55, skipping insertion in model container [2024-06-27 18:49:55,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:49:54" (2/4) ... [2024-06-27 18:49:55,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d654490 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:49:55, skipping insertion in model container [2024-06-27 18:49:55,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:49:54" (3/4) ... [2024-06-27 18:49:55,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d654490 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:49:55, skipping insertion in model container [2024-06-27 18:49:55,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:49:55" (4/4) ... [2024-06-27 18:49:55,676 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.opt_pso.opt_rmo.opt.i [2024-06-27 18:49:55,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:49:55,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:49:55,693 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:49:55,748 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:49:55,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:49:55,812 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:49:55,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:49:55,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 18:49:55,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:49:55,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:49:55,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:49:55,843 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;@3f5652ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:49:55,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:49:55,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:49:55,851 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:49:55,851 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:49:55,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:55,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:49:55,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:55,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash 351296548, now seen corresponding path program 1 times [2024-06-27 18:49:55,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:55,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051394237] [2024-06-27 18:49:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:55,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:56,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:56,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051394237] [2024-06-27 18:49:56,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051394237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:56,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:56,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:49:56,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748210311] [2024-06-27 18:49:56,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:56,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:49:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:49:56,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:49:56,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:49:56,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:56,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:56,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:49:56,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:57,637 INFO L124 PetriNetUnfolderBase]: 3405/4954 cut-off events. [2024-06-27 18:49:57,637 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-27 18:49:57,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9995 conditions, 4954 events. 3405/4954 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 27744 event pairs, 1679 based on Foata normal form. 170/4849 useless extension candidates. Maximal degree in co-relation 9983. Up to 4912 conditions per place. [2024-06-27 18:49:57,677 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 43 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-27 18:49:57,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 229 flow [2024-06-27 18:49:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:49:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:49:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-27 18:49:57,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884057971014492 [2024-06-27 18:49:57,690 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 95 transitions. [2024-06-27 18:49:57,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 229 flow [2024-06-27 18:49:57,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:49:57,700 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-27 18:49:57,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 18:49:57,705 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:49:57,705 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-27 18:49:57,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:57,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:57,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:57,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:49:57,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:57,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1706182541, now seen corresponding path program 1 times [2024-06-27 18:49:57,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:57,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215728967] [2024-06-27 18:49:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:58,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:58,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215728967] [2024-06-27 18:49:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215728967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:58,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:58,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:49:58,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731303406] [2024-06-27 18:49:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:58,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:49:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:49:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:49:58,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:58,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:58,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:58,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:58,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:59,308 INFO L124 PetriNetUnfolderBase]: 5113/7448 cut-off events. [2024-06-27 18:49:59,309 INFO L125 PetriNetUnfolderBase]: For 794/794 co-relation queries the response was YES. [2024-06-27 18:49:59,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16565 conditions, 7448 events. 5113/7448 cut-off events. For 794/794 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 41873 event pairs, 2804 based on Foata normal form. 3/7099 useless extension candidates. Maximal degree in co-relation 16553. Up to 7275 conditions per place. [2024-06-27 18:49:59,351 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 60 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-27 18:49:59,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 350 flow [2024-06-27 18:49:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:49:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:49:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-27 18:49:59,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-27 18:49:59,356 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 116 transitions. [2024-06-27 18:49:59,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 350 flow [2024-06-27 18:49:59,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 78 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:49:59,359 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 196 flow [2024-06-27 18:49:59,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-06-27 18:49:59,360 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-27 18:49:59,361 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 196 flow [2024-06-27 18:49:59,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:59,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:59,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:59,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:49:59,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:49:59,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1352050515, now seen corresponding path program 1 times [2024-06-27 18:49:59,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:59,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595006314] [2024-06-27 18:49:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:59,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:59,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:59,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595006314] [2024-06-27 18:49:59,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595006314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:59,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:59,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:49:59,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126651075] [2024-06-27 18:49:59,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:59,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:49:59,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:59,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:49:59,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:49:59,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:49:59,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:59,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:59,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:49:59,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:00,965 INFO L124 PetriNetUnfolderBase]: 5097/8053 cut-off events. [2024-06-27 18:50:00,965 INFO L125 PetriNetUnfolderBase]: For 2595/2595 co-relation queries the response was YES. [2024-06-27 18:50:00,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18732 conditions, 8053 events. 5097/8053 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 50518 event pairs, 2435 based on Foata normal form. 6/7502 useless extension candidates. Maximal degree in co-relation 18717. Up to 7224 conditions per place. [2024-06-27 18:50:01,016 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 72 selfloop transitions, 16 changer transitions 0/97 dead transitions. [2024-06-27 18:50:01,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 515 flow [2024-06-27 18:50:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:50:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:50:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-06-27 18:50:01,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043478260869565 [2024-06-27 18:50:01,020 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 196 flow. Second operand 5 states and 139 transitions. [2024-06-27 18:50:01,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 515 flow [2024-06-27 18:50:01,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 507 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:50:01,026 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 345 flow [2024-06-27 18:50:01,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2024-06-27 18:50:01,027 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-27 18:50:01,027 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 345 flow [2024-06-27 18:50:01,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:01,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:01,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:01,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:50:01,029 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:01,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1359446230, now seen corresponding path program 1 times [2024-06-27 18:50:01,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:01,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540634373] [2024-06-27 18:50:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:01,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:01,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:01,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540634373] [2024-06-27 18:50:01,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540634373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:01,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:01,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:50:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293968941] [2024-06-27 18:50:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:01,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:50:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:50:01,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:50:01,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-27 18:50:01,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:01,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:01,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-27 18:50:01,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:01,474 INFO L124 PetriNetUnfolderBase]: 1299/2664 cut-off events. [2024-06-27 18:50:01,475 INFO L125 PetriNetUnfolderBase]: For 1700/1765 co-relation queries the response was YES. [2024-06-27 18:50:01,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5927 conditions, 2664 events. 1299/2664 cut-off events. For 1700/1765 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19988 event pairs, 413 based on Foata normal form. 25/2498 useless extension candidates. Maximal degree in co-relation 5907. Up to 1624 conditions per place. [2024-06-27 18:50:01,493 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 35 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-06-27 18:50:01,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 404 flow [2024-06-27 18:50:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:50:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:50:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 18:50:01,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-06-27 18:50:01,495 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 345 flow. Second operand 3 states and 104 transitions. [2024-06-27 18:50:01,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 404 flow [2024-06-27 18:50:01,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 398 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-27 18:50:01,499 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 298 flow [2024-06-27 18:50:01,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-27 18:50:01,500 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2024-06-27 18:50:01,500 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 298 flow [2024-06-27 18:50:01,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:01,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:01,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:01,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:50:01,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:01,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1981792872, now seen corresponding path program 1 times [2024-06-27 18:50:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:01,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746360549] [2024-06-27 18:50:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:02,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746360549] [2024-06-27 18:50:02,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746360549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:02,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:02,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:50:02,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101701556] [2024-06-27 18:50:02,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:02,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:50:02,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:02,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:50:02,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:50:02,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:02,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:02,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:02,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:02,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:03,631 INFO L124 PetriNetUnfolderBase]: 4323/6853 cut-off events. [2024-06-27 18:50:03,632 INFO L125 PetriNetUnfolderBase]: For 5490/5490 co-relation queries the response was YES. [2024-06-27 18:50:03,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17186 conditions, 6853 events. 4323/6853 cut-off events. For 5490/5490 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41119 event pairs, 2161 based on Foata normal form. 6/6640 useless extension candidates. Maximal degree in co-relation 17164. Up to 6094 conditions per place. [2024-06-27 18:50:03,676 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 73 selfloop transitions, 16 changer transitions 1/99 dead transitions. [2024-06-27 18:50:03,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 574 flow [2024-06-27 18:50:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:50:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:50:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-27 18:50:03,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-06-27 18:50:03,679 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 298 flow. Second operand 6 states and 156 transitions. [2024-06-27 18:50:03,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 574 flow [2024-06-27 18:50:03,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:03,692 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 336 flow [2024-06-27 18:50:03,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 18:50:03,694 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-06-27 18:50:03,694 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 336 flow [2024-06-27 18:50:03,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:03,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:03,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:03,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:50:03,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:03,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -759188824, now seen corresponding path program 1 times [2024-06-27 18:50:03,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:03,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900060958] [2024-06-27 18:50:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:04,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:04,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900060958] [2024-06-27 18:50:04,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900060958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:04,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:04,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:50:04,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659685968] [2024-06-27 18:50:04,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:04,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:50:04,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:50:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:50:04,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:50:04,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:04,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:04,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:50:04,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:05,059 INFO L124 PetriNetUnfolderBase]: 3309/5377 cut-off events. [2024-06-27 18:50:05,060 INFO L125 PetriNetUnfolderBase]: For 5464/5538 co-relation queries the response was YES. [2024-06-27 18:50:05,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14025 conditions, 5377 events. 3309/5377 cut-off events. For 5464/5538 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32769 event pairs, 1615 based on Foata normal form. 8/5025 useless extension candidates. Maximal degree in co-relation 14001. Up to 4682 conditions per place. [2024-06-27 18:50:05,100 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 65 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-27 18:50:05,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 588 flow [2024-06-27 18:50:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:50:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:50:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 18:50:05,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-06-27 18:50:05,102 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 336 flow. Second operand 5 states and 118 transitions. [2024-06-27 18:50:05,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 588 flow [2024-06-27 18:50:05,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 544 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:05,108 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 400 flow [2024-06-27 18:50:05,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=400, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2024-06-27 18:50:05,111 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-27 18:50:05,112 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 400 flow [2024-06-27 18:50:05,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:05,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:05,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:05,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:50:05,113 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:05,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2060015213, now seen corresponding path program 1 times [2024-06-27 18:50:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:05,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197177070] [2024-06-27 18:50:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:05,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:05,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:05,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197177070] [2024-06-27 18:50:05,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197177070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:05,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:05,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:50:05,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186251722] [2024-06-27 18:50:05,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:05,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:50:05,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:50:05,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:50:05,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:05,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:05,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:05,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:05,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:06,771 INFO L124 PetriNetUnfolderBase]: 4404/6985 cut-off events. [2024-06-27 18:50:06,772 INFO L125 PetriNetUnfolderBase]: For 9152/9170 co-relation queries the response was YES. [2024-06-27 18:50:06,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19928 conditions, 6985 events. 4404/6985 cut-off events. For 9152/9170 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 41924 event pairs, 2079 based on Foata normal form. 16/6775 useless extension candidates. Maximal degree in co-relation 19901. Up to 6177 conditions per place. [2024-06-27 18:50:06,811 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 92 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2024-06-27 18:50:06,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 117 transitions, 810 flow [2024-06-27 18:50:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:50:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:50:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:50:06,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963768115942029 [2024-06-27 18:50:06,813 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 400 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:50:06,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 117 transitions, 810 flow [2024-06-27 18:50:06,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 117 transitions, 791 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:06,820 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 555 flow [2024-06-27 18:50:06,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=555, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2024-06-27 18:50:06,821 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-06-27 18:50:06,821 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 555 flow [2024-06-27 18:50:06,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:06,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:06,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:06,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:50:06,822 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:06,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1862086215, now seen corresponding path program 1 times [2024-06-27 18:50:06,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:06,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480375605] [2024-06-27 18:50:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:06,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:07,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:07,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480375605] [2024-06-27 18:50:07,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480375605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:07,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:07,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:50:07,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528377198] [2024-06-27 18:50:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:07,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:50:07,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:07,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:50:07,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:50:07,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:07,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 555 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:07,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:07,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:07,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:08,241 INFO L124 PetriNetUnfolderBase]: 4449/7057 cut-off events. [2024-06-27 18:50:08,241 INFO L125 PetriNetUnfolderBase]: For 13598/13598 co-relation queries the response was YES. [2024-06-27 18:50:08,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22313 conditions, 7057 events. 4449/7057 cut-off events. For 13598/13598 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42127 event pairs, 2225 based on Foata normal form. 2/6832 useless extension candidates. Maximal degree in co-relation 22282. Up to 6322 conditions per place. [2024-06-27 18:50:08,291 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 101 selfloop transitions, 20 changer transitions 0/128 dead transitions. [2024-06-27 18:50:08,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 128 transitions, 955 flow [2024-06-27 18:50:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 18:50:08,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-27 18:50:08,293 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 555 flow. Second operand 7 states and 153 transitions. [2024-06-27 18:50:08,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 128 transitions, 955 flow [2024-06-27 18:50:08,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 128 transitions, 939 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 18:50:08,308 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 681 flow [2024-06-27 18:50:08,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=681, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2024-06-27 18:50:08,311 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 29 predicate places. [2024-06-27 18:50:08,311 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 681 flow [2024-06-27 18:50:08,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:08,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:08,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:08,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:50:08,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:08,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1893663881, now seen corresponding path program 2 times [2024-06-27 18:50:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:08,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413553232] [2024-06-27 18:50:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:08,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:08,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:08,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413553232] [2024-06-27 18:50:08,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413553232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:08,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:08,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:50:08,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202907704] [2024-06-27 18:50:08,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:08,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:50:08,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:50:08,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:50:08,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:08,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 681 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:08,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:08,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:08,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:09,823 INFO L124 PetriNetUnfolderBase]: 4475/7096 cut-off events. [2024-06-27 18:50:09,824 INFO L125 PetriNetUnfolderBase]: For 15801/15801 co-relation queries the response was YES. [2024-06-27 18:50:09,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23121 conditions, 7096 events. 4475/7096 cut-off events. For 15801/15801 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 42337 event pairs, 2218 based on Foata normal form. 2/6870 useless extension candidates. Maximal degree in co-relation 23086. Up to 6342 conditions per place. [2024-06-27 18:50:09,872 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 99 selfloop transitions, 20 changer transitions 0/126 dead transitions. [2024-06-27 18:50:09,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 1033 flow [2024-06-27 18:50:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:50:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:50:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 18:50:09,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:50:09,874 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 681 flow. Second operand 6 states and 132 transitions. [2024-06-27 18:50:09,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 1033 flow [2024-06-27 18:50:09,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 995 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:09,892 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 731 flow [2024-06-27 18:50:09,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=731, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-06-27 18:50:09,893 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-27 18:50:09,893 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 731 flow [2024-06-27 18:50:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:09,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:09,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:09,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:50:09,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:09,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 564030791, now seen corresponding path program 3 times [2024-06-27 18:50:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:09,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222003616] [2024-06-27 18:50:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:10,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:10,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222003616] [2024-06-27 18:50:10,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222003616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:10,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:10,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:50:10,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120314217] [2024-06-27 18:50:10,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:10,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:50:10,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:50:10,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:50:10,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:10,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 731 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:10,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:10,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:10,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:11,298 INFO L124 PetriNetUnfolderBase]: 4462/7073 cut-off events. [2024-06-27 18:50:11,299 INFO L125 PetriNetUnfolderBase]: For 17859/17883 co-relation queries the response was YES. [2024-06-27 18:50:11,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23350 conditions, 7073 events. 4462/7073 cut-off events. For 17859/17883 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 42318 event pairs, 2106 based on Foata normal form. 20/6863 useless extension candidates. Maximal degree in co-relation 23314. Up to 6211 conditions per place. [2024-06-27 18:50:11,344 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 95 selfloop transitions, 27 changer transitions 0/129 dead transitions. [2024-06-27 18:50:11,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 129 transitions, 1084 flow [2024-06-27 18:50:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:50:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:50:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 18:50:11,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:50:11,346 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 731 flow. Second operand 6 states and 135 transitions. [2024-06-27 18:50:11,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 129 transitions, 1084 flow [2024-06-27 18:50:11,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 129 transitions, 1028 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:11,368 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 772 flow [2024-06-27 18:50:11,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=772, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-06-27 18:50:11,369 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-06-27 18:50:11,369 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 772 flow [2024-06-27 18:50:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:11,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:11,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:11,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:50:11,370 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:11,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash 564039719, now seen corresponding path program 1 times [2024-06-27 18:50:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445752888] [2024-06-27 18:50:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:12,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:12,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:12,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445752888] [2024-06-27 18:50:12,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445752888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:12,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:12,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593525977] [2024-06-27 18:50:12,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:12,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:12,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:12,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:12,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:12,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 772 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:12,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:12,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:12,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:13,063 INFO L124 PetriNetUnfolderBase]: 4491/7113 cut-off events. [2024-06-27 18:50:13,064 INFO L125 PetriNetUnfolderBase]: For 17894/17918 co-relation queries the response was YES. [2024-06-27 18:50:13,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23655 conditions, 7113 events. 4491/7113 cut-off events. For 17894/17918 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42638 event pairs, 2022 based on Foata normal form. 20/6903 useless extension candidates. Maximal degree in co-relation 23617. Up to 6215 conditions per place. [2024-06-27 18:50:13,110 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 101 selfloop transitions, 34 changer transitions 0/142 dead transitions. [2024-06-27 18:50:13,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 1192 flow [2024-06-27 18:50:13,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:13,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:50:13,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 18:50:13,113 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 772 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:50:13,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 1192 flow [2024-06-27 18:50:13,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 142 transitions, 1150 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:13,138 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 850 flow [2024-06-27 18:50:13,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=850, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2024-06-27 18:50:13,139 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-06-27 18:50:13,139 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 850 flow [2024-06-27 18:50:13,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:13,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:13,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:13,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:50:13,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:13,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:13,141 INFO L85 PathProgramCache]: Analyzing trace with hash -480508583, now seen corresponding path program 1 times [2024-06-27 18:50:13,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:13,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848470461] [2024-06-27 18:50:13,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:13,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:13,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:13,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848470461] [2024-06-27 18:50:13,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848470461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:13,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195163043] [2024-06-27 18:50:13,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:13,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:13,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:13,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 850 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:13,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:13,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:13,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:14,769 INFO L124 PetriNetUnfolderBase]: 4536/7185 cut-off events. [2024-06-27 18:50:14,769 INFO L125 PetriNetUnfolderBase]: For 22414/22414 co-relation queries the response was YES. [2024-06-27 18:50:14,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25525 conditions, 7185 events. 4536/7185 cut-off events. For 22414/22414 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 42908 event pairs, 1786 based on Foata normal form. 4/6959 useless extension candidates. Maximal degree in co-relation 25486. Up to 6372 conditions per place. [2024-06-27 18:50:14,822 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 114 selfloop transitions, 32 changer transitions 0/153 dead transitions. [2024-06-27 18:50:14,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 153 transitions, 1313 flow [2024-06-27 18:50:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 18:50:14,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-27 18:50:14,830 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 850 flow. Second operand 7 states and 160 transitions. [2024-06-27 18:50:14,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 153 transitions, 1313 flow [2024-06-27 18:50:14,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 153 transitions, 1229 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:14,870 INFO L231 Difference]: Finished difference. Result has 94 places, 116 transitions, 912 flow [2024-06-27 18:50:14,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=912, PETRI_PLACES=94, PETRI_TRANSITIONS=116} [2024-06-27 18:50:14,871 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-06-27 18:50:14,871 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 116 transitions, 912 flow [2024-06-27 18:50:14,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:14,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:14,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:14,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:50:14,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:14,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash 127032891, now seen corresponding path program 2 times [2024-06-27 18:50:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:14,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669660788] [2024-06-27 18:50:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:14,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:15,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:15,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669660788] [2024-06-27 18:50:15,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669660788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:15,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:15,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:15,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115204036] [2024-06-27 18:50:15,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:15,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:15,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:15,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:15,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:15,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:15,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 116 transitions, 912 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:15,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:15,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:15,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:16,354 INFO L124 PetriNetUnfolderBase]: 4610/7287 cut-off events. [2024-06-27 18:50:16,354 INFO L125 PetriNetUnfolderBase]: For 28321/28321 co-relation queries the response was YES. [2024-06-27 18:50:16,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27657 conditions, 7287 events. 4610/7287 cut-off events. For 28321/28321 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 43397 event pairs, 1725 based on Foata normal form. 4/7061 useless extension candidates. Maximal degree in co-relation 27616. Up to 6387 conditions per place. [2024-06-27 18:50:16,402 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 120 selfloop transitions, 42 changer transitions 0/169 dead transitions. [2024-06-27 18:50:16,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 169 transitions, 1560 flow [2024-06-27 18:50:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-27 18:50:16,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:50:16,487 INFO L175 Difference]: Start difference. First operand has 94 places, 116 transitions, 912 flow. Second operand 7 states and 161 transitions. [2024-06-27 18:50:16,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 169 transitions, 1560 flow [2024-06-27 18:50:16,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1501 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:16,525 INFO L231 Difference]: Finished difference. Result has 99 places, 131 transitions, 1142 flow [2024-06-27 18:50:16,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1142, PETRI_PLACES=99, PETRI_TRANSITIONS=131} [2024-06-27 18:50:16,526 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-06-27 18:50:16,527 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 131 transitions, 1142 flow [2024-06-27 18:50:16,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:16,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:16,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:50:16,527 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:16,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash 305086971, now seen corresponding path program 3 times [2024-06-27 18:50:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:16,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135452911] [2024-06-27 18:50:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:17,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:17,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135452911] [2024-06-27 18:50:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135452911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:17,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:17,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:17,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573202807] [2024-06-27 18:50:17,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:17,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:17,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:17,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:17,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:17,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:17,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 131 transitions, 1142 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:17,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:17,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:17,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:18,159 INFO L124 PetriNetUnfolderBase]: 4748/7477 cut-off events. [2024-06-27 18:50:18,159 INFO L125 PetriNetUnfolderBase]: For 37663/37672 co-relation queries the response was YES. [2024-06-27 18:50:18,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30248 conditions, 7477 events. 4748/7477 cut-off events. For 37663/37672 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 44665 event pairs, 1360 based on Foata normal form. 16/7259 useless extension candidates. Maximal degree in co-relation 30205. Up to 6131 conditions per place. [2024-06-27 18:50:18,199 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 139 selfloop transitions, 60 changer transitions 0/206 dead transitions. [2024-06-27 18:50:18,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 206 transitions, 2069 flow [2024-06-27 18:50:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:18,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:50:18,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 18:50:18,201 INFO L175 Difference]: Start difference. First operand has 99 places, 131 transitions, 1142 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:50:18,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 206 transitions, 2069 flow [2024-06-27 18:50:18,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 206 transitions, 1981 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:18,254 INFO L231 Difference]: Finished difference. Result has 104 places, 158 transitions, 1512 flow [2024-06-27 18:50:18,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1512, PETRI_PLACES=104, PETRI_TRANSITIONS=158} [2024-06-27 18:50:18,256 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 52 predicate places. [2024-06-27 18:50:18,256 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 158 transitions, 1512 flow [2024-06-27 18:50:18,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:18,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:18,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:18,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:50:18,257 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:18,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:18,257 INFO L85 PathProgramCache]: Analyzing trace with hash 305364018, now seen corresponding path program 1 times [2024-06-27 18:50:18,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:18,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638630961] [2024-06-27 18:50:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:18,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:19,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:19,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638630961] [2024-06-27 18:50:19,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638630961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:19,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:19,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:19,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240485119] [2024-06-27 18:50:19,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:19,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:19,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:19,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:19,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:19,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 158 transitions, 1512 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:19,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:19,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:19,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:20,389 INFO L124 PetriNetUnfolderBase]: 4992/7826 cut-off events. [2024-06-27 18:50:20,389 INFO L125 PetriNetUnfolderBase]: For 51579/51588 co-relation queries the response was YES. [2024-06-27 18:50:20,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35107 conditions, 7826 events. 4992/7826 cut-off events. For 51579/51588 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 46693 event pairs, 1189 based on Foata normal form. 36/7637 useless extension candidates. Maximal degree in co-relation 35061. Up to 6333 conditions per place. [2024-06-27 18:50:20,447 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 156 selfloop transitions, 77 changer transitions 0/240 dead transitions. [2024-06-27 18:50:20,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 240 transitions, 2643 flow [2024-06-27 18:50:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:20,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:50:20,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:50:20,450 INFO L175 Difference]: Start difference. First operand has 104 places, 158 transitions, 1512 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:50:20,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 240 transitions, 2643 flow [2024-06-27 18:50:20,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 240 transitions, 2525 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:20,538 INFO L231 Difference]: Finished difference. Result has 113 places, 186 transitions, 2028 flow [2024-06-27 18:50:20,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2028, PETRI_PLACES=113, PETRI_TRANSITIONS=186} [2024-06-27 18:50:20,539 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-06-27 18:50:20,539 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 186 transitions, 2028 flow [2024-06-27 18:50:20,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:20,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:20,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:20,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:50:20,540 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:20,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1177962842, now seen corresponding path program 1 times [2024-06-27 18:50:20,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:20,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864154315] [2024-06-27 18:50:20,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:20,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:21,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864154315] [2024-06-27 18:50:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864154315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:21,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:21,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267075602] [2024-06-27 18:50:21,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:21,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:21,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:21,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:21,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:21,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:21,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 186 transitions, 2028 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:21,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:21,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:21,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:22,788 INFO L124 PetriNetUnfolderBase]: 5102/7975 cut-off events. [2024-06-27 18:50:22,788 INFO L125 PetriNetUnfolderBase]: For 63585/63585 co-relation queries the response was YES. [2024-06-27 18:50:22,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38959 conditions, 7975 events. 5102/7975 cut-off events. For 63585/63585 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 47204 event pairs, 1592 based on Foata normal form. 2/7760 useless extension candidates. Maximal degree in co-relation 38908. Up to 7154 conditions per place. [2024-06-27 18:50:22,845 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 197 selfloop transitions, 43 changer transitions 0/247 dead transitions. [2024-06-27 18:50:22,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 247 transitions, 2858 flow [2024-06-27 18:50:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:50:22,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:50:22,847 INFO L175 Difference]: Start difference. First operand has 113 places, 186 transitions, 2028 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:50:22,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 247 transitions, 2858 flow [2024-06-27 18:50:22,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 247 transitions, 2764 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:22,929 INFO L231 Difference]: Finished difference. Result has 120 places, 203 transitions, 2265 flow [2024-06-27 18:50:22,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2265, PETRI_PLACES=120, PETRI_TRANSITIONS=203} [2024-06-27 18:50:22,930 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 68 predicate places. [2024-06-27 18:50:22,930 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 203 transitions, 2265 flow [2024-06-27 18:50:22,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:22,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:22,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:22,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:50:22,931 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:22,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:22,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2090636224, now seen corresponding path program 2 times [2024-06-27 18:50:22,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:22,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860897829] [2024-06-27 18:50:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:22,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:23,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860897829] [2024-06-27 18:50:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860897829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:23,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544226810] [2024-06-27 18:50:23,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:23,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:23,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:23,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 203 transitions, 2265 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:23,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:23,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:23,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:25,308 INFO L124 PetriNetUnfolderBase]: 5320/8282 cut-off events. [2024-06-27 18:50:25,309 INFO L125 PetriNetUnfolderBase]: For 68555/68561 co-relation queries the response was YES. [2024-06-27 18:50:25,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41679 conditions, 8282 events. 5320/8282 cut-off events. For 68555/68561 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 48781 event pairs, 1609 based on Foata normal form. 6/8062 useless extension candidates. Maximal degree in co-relation 41625. Up to 7365 conditions per place. [2024-06-27 18:50:25,377 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 204 selfloop transitions, 70 changer transitions 0/281 dead transitions. [2024-06-27 18:50:25,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 281 transitions, 3591 flow [2024-06-27 18:50:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 18:50:25,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-27 18:50:25,378 INFO L175 Difference]: Start difference. First operand has 120 places, 203 transitions, 2265 flow. Second operand 8 states and 172 transitions. [2024-06-27 18:50:25,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 281 transitions, 3591 flow [2024-06-27 18:50:25,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 281 transitions, 3423 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:25,516 INFO L231 Difference]: Finished difference. Result has 126 places, 243 transitions, 2970 flow [2024-06-27 18:50:25,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2970, PETRI_PLACES=126, PETRI_TRANSITIONS=243} [2024-06-27 18:50:25,516 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2024-06-27 18:50:25,517 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 243 transitions, 2970 flow [2024-06-27 18:50:25,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:25,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:25,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:25,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:50:25,517 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:25,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1218089366, now seen corresponding path program 1 times [2024-06-27 18:50:25,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:25,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713893501] [2024-06-27 18:50:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:26,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:26,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713893501] [2024-06-27 18:50:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713893501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:26,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:26,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186793237] [2024-06-27 18:50:26,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:26,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:26,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:26,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:26,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:26,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 243 transitions, 2970 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:26,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:26,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:26,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:27,308 INFO L124 PetriNetUnfolderBase]: 5362/8354 cut-off events. [2024-06-27 18:50:27,308 INFO L125 PetriNetUnfolderBase]: For 73802/73832 co-relation queries the response was YES. [2024-06-27 18:50:27,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42601 conditions, 8354 events. 5362/8354 cut-off events. For 73802/73832 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 49343 event pairs, 1694 based on Foata normal form. 24/8151 useless extension candidates. Maximal degree in co-relation 42543. Up to 7404 conditions per place. [2024-06-27 18:50:27,380 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 213 selfloop transitions, 71 changer transitions 0/291 dead transitions. [2024-06-27 18:50:27,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 291 transitions, 3771 flow [2024-06-27 18:50:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 18:50:27,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:50:27,383 INFO L175 Difference]: Start difference. First operand has 126 places, 243 transitions, 2970 flow. Second operand 8 states and 180 transitions. [2024-06-27 18:50:27,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 291 transitions, 3771 flow [2024-06-27 18:50:27,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 291 transitions, 3694 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:27,518 INFO L231 Difference]: Finished difference. Result has 133 places, 252 transitions, 3159 flow [2024-06-27 18:50:27,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3159, PETRI_PLACES=133, PETRI_TRANSITIONS=252} [2024-06-27 18:50:27,519 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-27 18:50:27,519 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 252 transitions, 3159 flow [2024-06-27 18:50:27,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:27,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:27,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:27,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:50:27,520 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:27,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:27,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1540210048, now seen corresponding path program 3 times [2024-06-27 18:50:27,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:27,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957477924] [2024-06-27 18:50:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:27,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:28,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957477924] [2024-06-27 18:50:28,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957477924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:28,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372306647] [2024-06-27 18:50:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:28,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:28,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:28,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:28,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:28,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:28,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 252 transitions, 3159 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:28,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:28,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:28,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:29,799 INFO L124 PetriNetUnfolderBase]: 5587/8644 cut-off events. [2024-06-27 18:50:29,800 INFO L125 PetriNetUnfolderBase]: For 81961/81973 co-relation queries the response was YES. [2024-06-27 18:50:29,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45407 conditions, 8644 events. 5587/8644 cut-off events. For 81961/81973 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 50625 event pairs, 1791 based on Foata normal form. 14/8442 useless extension candidates. Maximal degree in co-relation 45346. Up to 7634 conditions per place. [2024-06-27 18:50:29,876 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 228 selfloop transitions, 116 changer transitions 0/351 dead transitions. [2024-06-27 18:50:29,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 351 transitions, 4894 flow [2024-06-27 18:50:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 18:50:29,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-27 18:50:29,878 INFO L175 Difference]: Start difference. First operand has 133 places, 252 transitions, 3159 flow. Second operand 8 states and 183 transitions. [2024-06-27 18:50:29,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 351 transitions, 4894 flow [2024-06-27 18:50:30,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 351 transitions, 4638 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:30,066 INFO L231 Difference]: Finished difference. Result has 139 places, 306 transitions, 4168 flow [2024-06-27 18:50:30,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4168, PETRI_PLACES=139, PETRI_TRANSITIONS=306} [2024-06-27 18:50:30,067 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-06-27 18:50:30,067 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 306 transitions, 4168 flow [2024-06-27 18:50:30,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:30,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:30,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:30,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:50:30,067 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:30,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1141195350, now seen corresponding path program 2 times [2024-06-27 18:50:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:30,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664434326] [2024-06-27 18:50:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:30,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:30,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664434326] [2024-06-27 18:50:30,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664434326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:30,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:30,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:30,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850289069] [2024-06-27 18:50:30,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:30,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:30,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:30,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:30,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 306 transitions, 4168 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:30,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:30,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:31,919 INFO L124 PetriNetUnfolderBase]: 5629/8721 cut-off events. [2024-06-27 18:50:31,919 INFO L125 PetriNetUnfolderBase]: For 87985/88015 co-relation queries the response was YES. [2024-06-27 18:50:31,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46466 conditions, 8721 events. 5629/8721 cut-off events. For 87985/88015 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51329 event pairs, 1700 based on Foata normal form. 24/8517 useless extension candidates. Maximal degree in co-relation 46402. Up to 7528 conditions per place. [2024-06-27 18:50:31,989 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 222 selfloop transitions, 115 changer transitions 0/344 dead transitions. [2024-06-27 18:50:31,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 344 transitions, 5040 flow [2024-06-27 18:50:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:50:31,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:50:31,990 INFO L175 Difference]: Start difference. First operand has 139 places, 306 transitions, 4168 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:50:31,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 344 transitions, 5040 flow [2024-06-27 18:50:32,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 344 transitions, 4926 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:32,144 INFO L231 Difference]: Finished difference. Result has 143 places, 310 transitions, 4373 flow [2024-06-27 18:50:32,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4373, PETRI_PLACES=143, PETRI_TRANSITIONS=310} [2024-06-27 18:50:32,144 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2024-06-27 18:50:32,145 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 310 transitions, 4373 flow [2024-06-27 18:50:32,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:32,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:32,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:32,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:50:32,145 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:32,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:32,146 INFO L85 PathProgramCache]: Analyzing trace with hash -206580562, now seen corresponding path program 3 times [2024-06-27 18:50:32,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:32,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23052340] [2024-06-27 18:50:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:32,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:32,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:32,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23052340] [2024-06-27 18:50:32,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23052340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:32,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:32,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121740564] [2024-06-27 18:50:32,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:32,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:32,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:32,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:32,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:32,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 310 transitions, 4373 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:32,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:32,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:32,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:34,166 INFO L124 PetriNetUnfolderBase]: 5661/8752 cut-off events. [2024-06-27 18:50:34,166 INFO L125 PetriNetUnfolderBase]: For 95955/95961 co-relation queries the response was YES. [2024-06-27 18:50:34,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47273 conditions, 8752 events. 5661/8752 cut-off events. For 95955/95961 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51627 event pairs, 1416 based on Foata normal form. 12/8529 useless extension candidates. Maximal degree in co-relation 47208. Up to 6839 conditions per place. [2024-06-27 18:50:34,246 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 157 selfloop transitions, 190 changer transitions 0/354 dead transitions. [2024-06-27 18:50:34,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 354 transitions, 5462 flow [2024-06-27 18:50:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:50:34,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 18:50:34,248 INFO L175 Difference]: Start difference. First operand has 143 places, 310 transitions, 4373 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:50:34,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 354 transitions, 5462 flow [2024-06-27 18:50:34,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 354 transitions, 5195 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:34,438 INFO L231 Difference]: Finished difference. Result has 146 places, 316 transitions, 4658 flow [2024-06-27 18:50:34,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4122, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4658, PETRI_PLACES=146, PETRI_TRANSITIONS=316} [2024-06-27 18:50:34,438 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-06-27 18:50:34,439 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 316 transitions, 4658 flow [2024-06-27 18:50:34,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:34,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:34,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:34,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:50:34,439 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:34,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:34,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1536457312, now seen corresponding path program 4 times [2024-06-27 18:50:34,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:34,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38876070] [2024-06-27 18:50:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:34,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38876070] [2024-06-27 18:50:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38876070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468732758] [2024-06-27 18:50:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:34,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:34,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:34,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:34,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:35,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:35,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 316 transitions, 4658 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:35,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:35,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:35,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:36,367 INFO L124 PetriNetUnfolderBase]: 5673/8750 cut-off events. [2024-06-27 18:50:36,368 INFO L125 PetriNetUnfolderBase]: For 100647/100653 co-relation queries the response was YES. [2024-06-27 18:50:36,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48403 conditions, 8750 events. 5673/8750 cut-off events. For 100647/100653 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 51497 event pairs, 1414 based on Foata normal form. 8/8528 useless extension candidates. Maximal degree in co-relation 48336. Up to 6843 conditions per place. [2024-06-27 18:50:36,444 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 174 selfloop transitions, 175 changer transitions 0/356 dead transitions. [2024-06-27 18:50:36,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 356 transitions, 5651 flow [2024-06-27 18:50:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-27 18:50:36,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-27 18:50:36,446 INFO L175 Difference]: Start difference. First operand has 146 places, 316 transitions, 4658 flow. Second operand 7 states and 165 transitions. [2024-06-27 18:50:36,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 356 transitions, 5651 flow [2024-06-27 18:50:36,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 356 transitions, 5263 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:36,675 INFO L231 Difference]: Finished difference. Result has 149 places, 320 transitions, 4705 flow [2024-06-27 18:50:36,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4273, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4705, PETRI_PLACES=149, PETRI_TRANSITIONS=320} [2024-06-27 18:50:36,676 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-06-27 18:50:36,676 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 320 transitions, 4705 flow [2024-06-27 18:50:36,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:36,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:36,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:50:36,676 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:36,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:36,677 INFO L85 PathProgramCache]: Analyzing trace with hash 876044328, now seen corresponding path program 1 times [2024-06-27 18:50:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:36,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560442923] [2024-06-27 18:50:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:36,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:37,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560442923] [2024-06-27 18:50:37,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560442923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:37,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:37,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032300392] [2024-06-27 18:50:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:37,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:37,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:37,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 320 transitions, 4705 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:37,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:37,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:38,723 INFO L124 PetriNetUnfolderBase]: 5699/8879 cut-off events. [2024-06-27 18:50:38,724 INFO L125 PetriNetUnfolderBase]: For 105687/105711 co-relation queries the response was YES. [2024-06-27 18:50:38,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48871 conditions, 8879 events. 5699/8879 cut-off events. For 105687/105711 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 52991 event pairs, 2106 based on Foata normal form. 18/8662 useless extension candidates. Maximal degree in co-relation 48803. Up to 7920 conditions per place. [2024-06-27 18:50:38,796 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 304 selfloop transitions, 52 changer transitions 0/363 dead transitions. [2024-06-27 18:50:38,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 363 transitions, 5713 flow [2024-06-27 18:50:38,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:38,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 18:50:38,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-27 18:50:38,797 INFO L175 Difference]: Start difference. First operand has 149 places, 320 transitions, 4705 flow. Second operand 7 states and 157 transitions. [2024-06-27 18:50:38,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 363 transitions, 5713 flow [2024-06-27 18:50:39,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 363 transitions, 5434 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 18:50:39,022 INFO L231 Difference]: Finished difference. Result has 152 places, 327 transitions, 4662 flow [2024-06-27 18:50:39,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4434, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4662, PETRI_PLACES=152, PETRI_TRANSITIONS=327} [2024-06-27 18:50:39,023 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-27 18:50:39,023 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 327 transitions, 4662 flow [2024-06-27 18:50:39,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:39,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:39,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:39,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:50:39,023 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:39,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash 876340998, now seen corresponding path program 2 times [2024-06-27 18:50:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:39,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12028719] [2024-06-27 18:50:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:39,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12028719] [2024-06-27 18:50:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12028719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:39,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:39,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125265732] [2024-06-27 18:50:39,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:39,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:39,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:39,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:39,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:39,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:39,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 327 transitions, 4662 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:39,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:39,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:39,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:41,253 INFO L124 PetriNetUnfolderBase]: 5696/8867 cut-off events. [2024-06-27 18:50:41,253 INFO L125 PetriNetUnfolderBase]: For 111828/111852 co-relation queries the response was YES. [2024-06-27 18:50:41,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49065 conditions, 8867 events. 5696/8867 cut-off events. For 111828/111852 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 52839 event pairs, 2106 based on Foata normal form. 18/8652 useless extension candidates. Maximal degree in co-relation 48996. Up to 7860 conditions per place. [2024-06-27 18:50:41,328 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 303 selfloop transitions, 68 changer transitions 0/378 dead transitions. [2024-06-27 18:50:41,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 378 transitions, 5738 flow [2024-06-27 18:50:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 18:50:41,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:50:41,330 INFO L175 Difference]: Start difference. First operand has 152 places, 327 transitions, 4662 flow. Second operand 8 states and 180 transitions. [2024-06-27 18:50:41,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 378 transitions, 5738 flow [2024-06-27 18:50:41,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 378 transitions, 5583 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:41,553 INFO L231 Difference]: Finished difference. Result has 155 places, 334 transitions, 4790 flow [2024-06-27 18:50:41,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4507, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4790, PETRI_PLACES=155, PETRI_TRANSITIONS=334} [2024-06-27 18:50:41,554 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 103 predicate places. [2024-06-27 18:50:41,554 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 334 transitions, 4790 flow [2024-06-27 18:50:41,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:41,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:41,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:41,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:50:41,555 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:41,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:41,555 INFO L85 PathProgramCache]: Analyzing trace with hash 723943510, now seen corresponding path program 1 times [2024-06-27 18:50:41,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:41,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882048293] [2024-06-27 18:50:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:41,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:42,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:42,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882048293] [2024-06-27 18:50:42,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882048293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:42,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:42,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095061100] [2024-06-27 18:50:42,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:42,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:42,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:42,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:42,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 334 transitions, 4790 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:42,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:42,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:42,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:44,014 INFO L124 PetriNetUnfolderBase]: 5765/8975 cut-off events. [2024-06-27 18:50:44,015 INFO L125 PetriNetUnfolderBase]: For 124345/124357 co-relation queries the response was YES. [2024-06-27 18:50:44,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50610 conditions, 8975 events. 5765/8975 cut-off events. For 124345/124357 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 53496 event pairs, 1697 based on Foata normal form. 16/8763 useless extension candidates. Maximal degree in co-relation 50540. Up to 7877 conditions per place. [2024-06-27 18:50:44,097 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 295 selfloop transitions, 91 changer transitions 0/393 dead transitions. [2024-06-27 18:50:44,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 393 transitions, 5832 flow [2024-06-27 18:50:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-27 18:50:44,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830917874396135 [2024-06-27 18:50:44,099 INFO L175 Difference]: Start difference. First operand has 155 places, 334 transitions, 4790 flow. Second operand 9 states and 200 transitions. [2024-06-27 18:50:44,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 393 transitions, 5832 flow [2024-06-27 18:50:44,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 393 transitions, 5634 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 18:50:44,360 INFO L231 Difference]: Finished difference. Result has 160 places, 346 transitions, 4925 flow [2024-06-27 18:50:44,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4594, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4925, PETRI_PLACES=160, PETRI_TRANSITIONS=346} [2024-06-27 18:50:44,360 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 108 predicate places. [2024-06-27 18:50:44,360 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 346 transitions, 4925 flow [2024-06-27 18:50:44,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:44,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:44,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:44,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:50:44,361 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:44,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:44,361 INFO L85 PathProgramCache]: Analyzing trace with hash 221660610, now seen corresponding path program 2 times [2024-06-27 18:50:44,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:44,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039342094] [2024-06-27 18:50:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:44,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:45,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:45,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039342094] [2024-06-27 18:50:45,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039342094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:45,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:45,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:45,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326243611] [2024-06-27 18:50:45,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:45,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:45,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:45,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:45,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:45,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 346 transitions, 4925 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:45,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:45,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:45,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:46,823 INFO L124 PetriNetUnfolderBase]: 5889/9094 cut-off events. [2024-06-27 18:50:46,823 INFO L125 PetriNetUnfolderBase]: For 128916/128928 co-relation queries the response was YES. [2024-06-27 18:50:46,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52555 conditions, 9094 events. 5889/9094 cut-off events. For 128916/128928 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 53788 event pairs, 2061 based on Foata normal form. 16/8902 useless extension candidates. Maximal degree in co-relation 52482. Up to 8078 conditions per place. [2024-06-27 18:50:46,909 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 296 selfloop transitions, 128 changer transitions 0/431 dead transitions. [2024-06-27 18:50:46,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 431 transitions, 6558 flow [2024-06-27 18:50:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:50:46,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-06-27 18:50:46,911 INFO L175 Difference]: Start difference. First operand has 160 places, 346 transitions, 4925 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:50:46,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 431 transitions, 6558 flow [2024-06-27 18:50:47,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 431 transitions, 6301 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-27 18:50:47,187 INFO L231 Difference]: Finished difference. Result has 167 places, 384 transitions, 5642 flow [2024-06-27 18:50:47,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4758, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5642, PETRI_PLACES=167, PETRI_TRANSITIONS=384} [2024-06-27 18:50:47,188 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2024-06-27 18:50:47,188 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 384 transitions, 5642 flow [2024-06-27 18:50:47,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:47,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:47,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:47,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:50:47,188 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:47,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:47,189 INFO L85 PathProgramCache]: Analyzing trace with hash 223520765, now seen corresponding path program 1 times [2024-06-27 18:50:47,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:47,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26475134] [2024-06-27 18:50:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:47,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:47,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:47,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26475134] [2024-06-27 18:50:47,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26475134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:47,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:47,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:47,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064841885] [2024-06-27 18:50:47,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:47,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:47,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:47,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:47,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:50:47,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 384 transitions, 5642 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) [2024-06-27 18:50:47,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:47,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:50:47,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:49,428 INFO L124 PetriNetUnfolderBase]: 5871/9144 cut-off events. [2024-06-27 18:50:49,428 INFO L125 PetriNetUnfolderBase]: For 132471/132612 co-relation queries the response was YES. [2024-06-27 18:50:49,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54539 conditions, 9144 events. 5871/9144 cut-off events. For 132471/132612 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 55013 event pairs, 1403 based on Foata normal form. 115/9003 useless extension candidates. Maximal degree in co-relation 54462. Up to 7245 conditions per place. [2024-06-27 18:50:49,506 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 245 selfloop transitions, 231 changer transitions 0/511 dead transitions. [2024-06-27 18:50:49,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 511 transitions, 8316 flow [2024-06-27 18:50:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:50:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:50:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:50:49,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-27 18:50:49,507 INFO L175 Difference]: Start difference. First operand has 167 places, 384 transitions, 5642 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:50:49,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 511 transitions, 8316 flow [2024-06-27 18:50:49,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 511 transitions, 8128 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:49,846 INFO L231 Difference]: Finished difference. Result has 174 places, 473 transitions, 7767 flow [2024-06-27 18:50:49,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5474, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7767, PETRI_PLACES=174, PETRI_TRANSITIONS=473} [2024-06-27 18:50:49,847 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-06-27 18:50:49,847 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 473 transitions, 7767 flow [2024-06-27 18:50:49,847 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) [2024-06-27 18:50:49,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:49,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:49,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:50:49,847 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:49,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:49,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1884648964, now seen corresponding path program 3 times [2024-06-27 18:50:49,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597879374] [2024-06-27 18:50:49,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:49,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:50,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:50,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597879374] [2024-06-27 18:50:50,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597879374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:50,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:50,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:50:50,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33302988] [2024-06-27 18:50:50,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:50,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:50:50,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:50:50,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:50:50,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:50:50,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 473 transitions, 7767 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) [2024-06-27 18:50:50,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:50,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:50:50,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:52,282 INFO L124 PetriNetUnfolderBase]: 5937/9240 cut-off events. [2024-06-27 18:50:52,282 INFO L125 PetriNetUnfolderBase]: For 150085/150188 co-relation queries the response was YES. [2024-06-27 18:50:52,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57869 conditions, 9240 events. 5937/9240 cut-off events. For 150085/150188 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 55465 event pairs, 1695 based on Foata normal form. 90/9099 useless extension candidates. Maximal degree in co-relation 57788. Up to 7889 conditions per place. [2024-06-27 18:50:52,360 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 304 selfloop transitions, 182 changer transitions 0/521 dead transitions. [2024-06-27 18:50:52,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 521 transitions, 9096 flow [2024-06-27 18:50:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:50:52,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:50:52,362 INFO L175 Difference]: Start difference. First operand has 174 places, 473 transitions, 7767 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:50:52,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 521 transitions, 9096 flow [2024-06-27 18:50:52,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 521 transitions, 8889 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 18:50:52,741 INFO L231 Difference]: Finished difference. Result has 182 places, 483 transitions, 8237 flow [2024-06-27 18:50:52,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7564, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8237, PETRI_PLACES=182, PETRI_TRANSITIONS=483} [2024-06-27 18:50:52,742 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 130 predicate places. [2024-06-27 18:50:52,742 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 483 transitions, 8237 flow [2024-06-27 18:50:52,742 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) [2024-06-27 18:50:52,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:52,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:52,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:50:52,743 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:52,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash -552271160, now seen corresponding path program 4 times [2024-06-27 18:50:52,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:52,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272775007] [2024-06-27 18:50:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:53,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:53,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272775007] [2024-06-27 18:50:53,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272775007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:53,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:53,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:50:53,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871516529] [2024-06-27 18:50:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:53,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:50:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:53,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:50:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:50:53,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:53,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 483 transitions, 8237 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:53,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:53,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:53,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:55,607 INFO L124 PetriNetUnfolderBase]: 6267/9642 cut-off events. [2024-06-27 18:50:55,607 INFO L125 PetriNetUnfolderBase]: For 176857/176861 co-relation queries the response was YES. [2024-06-27 18:50:55,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62620 conditions, 9642 events. 6267/9642 cut-off events. For 176857/176861 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 57076 event pairs, 2058 based on Foata normal form. 8/9433 useless extension candidates. Maximal degree in co-relation 62535. Up to 8420 conditions per place. [2024-06-27 18:50:55,688 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 345 selfloop transitions, 184 changer transitions 0/536 dead transitions. [2024-06-27 18:50:55,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 536 transitions, 9666 flow [2024-06-27 18:50:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:50:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:50:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 18:50:55,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49033816425120774 [2024-06-27 18:50:55,690 INFO L175 Difference]: Start difference. First operand has 182 places, 483 transitions, 8237 flow. Second operand 9 states and 203 transitions. [2024-06-27 18:50:55,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 536 transitions, 9666 flow [2024-06-27 18:50:56,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 536 transitions, 9398 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-27 18:50:56,135 INFO L231 Difference]: Finished difference. Result has 188 places, 489 transitions, 8514 flow [2024-06-27 18:50:56,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8030, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8514, PETRI_PLACES=188, PETRI_TRANSITIONS=489} [2024-06-27 18:50:56,136 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 136 predicate places. [2024-06-27 18:50:56,136 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 489 transitions, 8514 flow [2024-06-27 18:50:56,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:56,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:56,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:56,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:50:56,137 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:56,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash -593681115, now seen corresponding path program 2 times [2024-06-27 18:50:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658759731] [2024-06-27 18:50:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:56,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:56,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:56,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658759731] [2024-06-27 18:50:56,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658759731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:56,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:56,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:50:56,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379229466] [2024-06-27 18:50:56,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:56,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:50:56,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:50:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:50:57,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:50:57,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 489 transitions, 8514 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:57,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:57,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:50:57,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:58,877 INFO L124 PetriNetUnfolderBase]: 6291/9671 cut-off events. [2024-06-27 18:50:58,877 INFO L125 PetriNetUnfolderBase]: For 190329/190341 co-relation queries the response was YES. [2024-06-27 18:50:58,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63429 conditions, 9671 events. 6291/9671 cut-off events. For 190329/190341 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 57158 event pairs, 2047 based on Foata normal form. 10/9464 useless extension candidates. Maximal degree in co-relation 63343. Up to 8433 conditions per place. [2024-06-27 18:50:58,980 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 340 selfloop transitions, 186 changer transitions 0/533 dead transitions. [2024-06-27 18:50:58,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 533 transitions, 9858 flow [2024-06-27 18:50:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:50:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:50:58,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:50:58,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 18:50:58,982 INFO L175 Difference]: Start difference. First operand has 188 places, 489 transitions, 8514 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:50:58,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 533 transitions, 9858 flow [2024-06-27 18:50:59,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 533 transitions, 9450 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 18:50:59,491 INFO L231 Difference]: Finished difference. Result has 189 places, 494 transitions, 8613 flow [2024-06-27 18:50:59,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8106, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8613, PETRI_PLACES=189, PETRI_TRANSITIONS=494} [2024-06-27 18:50:59,492 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 137 predicate places. [2024-06-27 18:50:59,492 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 494 transitions, 8613 flow [2024-06-27 18:50:59,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:59,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:59,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:50:59,493 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:50:59,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2114746256, now seen corresponding path program 5 times [2024-06-27 18:50:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435884434] [2024-06-27 18:50:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435884434] [2024-06-27 18:51:00,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435884434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:00,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:00,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:00,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430661869] [2024-06-27 18:51:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:00,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:00,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 494 transitions, 8613 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:00,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:00,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:00,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:02,438 INFO L124 PetriNetUnfolderBase]: 6487/9977 cut-off events. [2024-06-27 18:51:02,439 INFO L125 PetriNetUnfolderBase]: For 200199/200209 co-relation queries the response was YES. [2024-06-27 18:51:02,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65117 conditions, 9977 events. 6487/9977 cut-off events. For 200199/200209 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 59029 event pairs, 1811 based on Foata normal form. 14/9759 useless extension candidates. Maximal degree in co-relation 65030. Up to 8831 conditions per place. [2024-06-27 18:51:02,551 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 415 selfloop transitions, 151 changer transitions 0/573 dead transitions. [2024-06-27 18:51:02,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 573 transitions, 10284 flow [2024-06-27 18:51:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 18:51:02,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 18:51:02,552 INFO L175 Difference]: Start difference. First operand has 189 places, 494 transitions, 8613 flow. Second operand 9 states and 204 transitions. [2024-06-27 18:51:02,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 573 transitions, 10284 flow [2024-06-27 18:51:03,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 573 transitions, 9958 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:51:03,084 INFO L231 Difference]: Finished difference. Result has 194 places, 519 transitions, 8931 flow [2024-06-27 18:51:03,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8287, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8931, PETRI_PLACES=194, PETRI_TRANSITIONS=519} [2024-06-27 18:51:03,085 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 142 predicate places. [2024-06-27 18:51:03,085 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 519 transitions, 8931 flow [2024-06-27 18:51:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:03,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:03,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:03,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:51:03,086 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:03,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1014488072, now seen corresponding path program 6 times [2024-06-27 18:51:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:03,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408757095] [2024-06-27 18:51:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:03,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408757095] [2024-06-27 18:51:03,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408757095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:03,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:03,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:03,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982862155] [2024-06-27 18:51:03,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:03,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:03,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:04,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:04,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 519 transitions, 8931 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:04,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:04,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:04,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:05,860 INFO L124 PetriNetUnfolderBase]: 6611/10156 cut-off events. [2024-06-27 18:51:05,860 INFO L125 PetriNetUnfolderBase]: For 212762/212772 co-relation queries the response was YES. [2024-06-27 18:51:05,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67114 conditions, 10156 events. 6611/10156 cut-off events. For 212762/212772 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 60186 event pairs, 1841 based on Foata normal form. 14/9938 useless extension candidates. Maximal degree in co-relation 67025. Up to 8915 conditions per place. [2024-06-27 18:51:05,986 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 391 selfloop transitions, 186 changer transitions 0/584 dead transitions. [2024-06-27 18:51:05,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 584 transitions, 10523 flow [2024-06-27 18:51:05,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 18:51:05,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 18:51:05,987 INFO L175 Difference]: Start difference. First operand has 194 places, 519 transitions, 8931 flow. Second operand 9 states and 204 transitions. [2024-06-27 18:51:05,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 584 transitions, 10523 flow [2024-06-27 18:51:06,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 584 transitions, 10202 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 18:51:06,683 INFO L231 Difference]: Finished difference. Result has 197 places, 531 transitions, 9170 flow [2024-06-27 18:51:06,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8610, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9170, PETRI_PLACES=197, PETRI_TRANSITIONS=531} [2024-06-27 18:51:06,684 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 145 predicate places. [2024-06-27 18:51:06,684 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 531 transitions, 9170 flow [2024-06-27 18:51:06,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:06,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:06,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:06,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:51:06,685 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:06,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:06,685 INFO L85 PathProgramCache]: Analyzing trace with hash -595703583, now seen corresponding path program 3 times [2024-06-27 18:51:06,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:06,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759234591] [2024-06-27 18:51:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:06,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:07,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759234591] [2024-06-27 18:51:07,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759234591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:07,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:07,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:07,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874474692] [2024-06-27 18:51:07,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:07,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:07,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:07,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:07,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 531 transitions, 9170 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:07,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:07,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:07,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:09,270 INFO L124 PetriNetUnfolderBase]: 6591/10107 cut-off events. [2024-06-27 18:51:09,270 INFO L125 PetriNetUnfolderBase]: For 224658/224670 co-relation queries the response was YES. [2024-06-27 18:51:09,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67790 conditions, 10107 events. 6591/10107 cut-off events. For 224658/224670 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 59851 event pairs, 2088 based on Foata normal form. 10/9900 useless extension candidates. Maximal degree in co-relation 67700. Up to 8616 conditions per place. [2024-06-27 18:51:09,371 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 337 selfloop transitions, 223 changer transitions 0/567 dead transitions. [2024-06-27 18:51:09,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 567 transitions, 10534 flow [2024-06-27 18:51:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:51:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:51:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-27 18:51:09,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-27 18:51:09,372 INFO L175 Difference]: Start difference. First operand has 197 places, 531 transitions, 9170 flow. Second operand 7 states and 158 transitions. [2024-06-27 18:51:09,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 567 transitions, 10534 flow [2024-06-27 18:51:10,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 567 transitions, 10133 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:51:10,066 INFO L231 Difference]: Finished difference. Result has 198 places, 534 transitions, 9336 flow [2024-06-27 18:51:10,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8781, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9336, PETRI_PLACES=198, PETRI_TRANSITIONS=534} [2024-06-27 18:51:10,067 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 146 predicate places. [2024-06-27 18:51:10,067 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 534 transitions, 9336 flow [2024-06-27 18:51:10,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:10,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:10,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:10,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:51:10,068 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:10,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:10,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1690674237, now seen corresponding path program 1 times [2024-06-27 18:51:10,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:10,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113068692] [2024-06-27 18:51:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:10,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113068692] [2024-06-27 18:51:10,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113068692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:10,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:10,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:51:10,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462496984] [2024-06-27 18:51:10,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:10,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:51:10,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:51:10,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:51:10,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:10,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 534 transitions, 9336 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:10,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:10,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:10,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:12,407 INFO L124 PetriNetUnfolderBase]: 6630/10188 cut-off events. [2024-06-27 18:51:12,408 INFO L125 PetriNetUnfolderBase]: For 236420/236424 co-relation queries the response was YES. [2024-06-27 18:51:12,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68462 conditions, 10188 events. 6630/10188 cut-off events. For 236420/236424 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 60466 event pairs, 2321 based on Foata normal form. 5/9964 useless extension candidates. Maximal degree in co-relation 68371. Up to 9331 conditions per place. [2024-06-27 18:51:12,506 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 533 selfloop transitions, 49 changer transitions 0/589 dead transitions. [2024-06-27 18:51:12,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 589 transitions, 10991 flow [2024-06-27 18:51:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:51:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:51:12,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:51:12,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:51:12,508 INFO L175 Difference]: Start difference. First operand has 198 places, 534 transitions, 9336 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:51:12,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 589 transitions, 10991 flow [2024-06-27 18:51:13,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 589 transitions, 10576 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:51:13,041 INFO L231 Difference]: Finished difference. Result has 203 places, 552 transitions, 9265 flow [2024-06-27 18:51:13,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8921, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9265, PETRI_PLACES=203, PETRI_TRANSITIONS=552} [2024-06-27 18:51:13,042 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-27 18:51:13,042 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 552 transitions, 9265 flow [2024-06-27 18:51:13,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:13,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:13,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:13,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:51:13,043 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:13,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:13,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1700505654, now seen corresponding path program 7 times [2024-06-27 18:51:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259870164] [2024-06-27 18:51:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:13,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259870164] [2024-06-27 18:51:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259870164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:13,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:13,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418941473] [2024-06-27 18:51:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:13,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:13,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:13,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:13,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 552 transitions, 9265 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:13,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:13,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:13,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:15,995 INFO L124 PetriNetUnfolderBase]: 6902/10569 cut-off events. [2024-06-27 18:51:15,996 INFO L125 PetriNetUnfolderBase]: For 243456/243474 co-relation queries the response was YES. [2024-06-27 18:51:16,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71534 conditions, 10569 events. 6902/10569 cut-off events. For 243456/243474 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 62653 event pairs, 1660 based on Foata normal form. 16/10340 useless extension candidates. Maximal degree in co-relation 71439. Up to 9340 conditions per place. [2024-06-27 18:51:16,121 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 476 selfloop transitions, 164 changer transitions 0/647 dead transitions. [2024-06-27 18:51:16,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 647 transitions, 11386 flow [2024-06-27 18:51:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 18:51:16,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46618357487922707 [2024-06-27 18:51:16,123 INFO L175 Difference]: Start difference. First operand has 203 places, 552 transitions, 9265 flow. Second operand 9 states and 193 transitions. [2024-06-27 18:51:16,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 647 transitions, 11386 flow [2024-06-27 18:51:16,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 647 transitions, 11293 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 18:51:16,877 INFO L231 Difference]: Finished difference. Result has 211 places, 595 transitions, 10133 flow [2024-06-27 18:51:16,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9172, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10133, PETRI_PLACES=211, PETRI_TRANSITIONS=595} [2024-06-27 18:51:16,879 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 159 predicate places. [2024-06-27 18:51:16,879 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 595 transitions, 10133 flow [2024-06-27 18:51:16,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:16,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:16,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:16,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:51:16,880 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:16,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1703248224, now seen corresponding path program 8 times [2024-06-27 18:51:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630571706] [2024-06-27 18:51:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:16,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:17,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630571706] [2024-06-27 18:51:17,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630571706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:17,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:17,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771298600] [2024-06-27 18:51:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:17,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:17,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:17,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:17,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:17,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 595 transitions, 10133 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:17,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:17,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:17,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:19,756 INFO L124 PetriNetUnfolderBase]: 6936/10599 cut-off events. [2024-06-27 18:51:19,757 INFO L125 PetriNetUnfolderBase]: For 265840/265846 co-relation queries the response was YES. [2024-06-27 18:51:19,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73851 conditions, 10599 events. 6936/10599 cut-off events. For 265840/265846 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 62941 event pairs, 2147 based on Foata normal form. 10/10392 useless extension candidates. Maximal degree in co-relation 73753. Up to 9088 conditions per place. [2024-06-27 18:51:19,894 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 407 selfloop transitions, 225 changer transitions 0/639 dead transitions. [2024-06-27 18:51:19,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 639 transitions, 11711 flow [2024-06-27 18:51:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 18:51:19,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:51:19,895 INFO L175 Difference]: Start difference. First operand has 211 places, 595 transitions, 10133 flow. Second operand 8 states and 180 transitions. [2024-06-27 18:51:19,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 639 transitions, 11711 flow [2024-06-27 18:51:20,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 639 transitions, 11433 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 18:51:20,849 INFO L231 Difference]: Finished difference. Result has 214 places, 598 transitions, 10451 flow [2024-06-27 18:51:20,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9855, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10451, PETRI_PLACES=214, PETRI_TRANSITIONS=598} [2024-06-27 18:51:20,850 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-27 18:51:20,850 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 598 transitions, 10451 flow [2024-06-27 18:51:20,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:20,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:20,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:20,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:51:20,851 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:20,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash -266201568, now seen corresponding path program 9 times [2024-06-27 18:51:20,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:20,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848598789] [2024-06-27 18:51:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:20,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:21,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:21,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848598789] [2024-06-27 18:51:21,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848598789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:21,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:21,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:21,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219430526] [2024-06-27 18:51:21,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:21,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:21,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:21,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:21,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:21,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:21,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 598 transitions, 10451 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:21,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:21,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:21,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:23,731 INFO L124 PetriNetUnfolderBase]: 6970/10670 cut-off events. [2024-06-27 18:51:23,732 INFO L125 PetriNetUnfolderBase]: For 284802/284814 co-relation queries the response was YES. [2024-06-27 18:51:23,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75656 conditions, 10670 events. 6970/10670 cut-off events. For 284802/284814 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 63526 event pairs, 1655 based on Foata normal form. 16/10451 useless extension candidates. Maximal degree in co-relation 75557. Up to 9237 conditions per place. [2024-06-27 18:51:23,880 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 408 selfloop transitions, 227 changer transitions 0/642 dead transitions. [2024-06-27 18:51:23,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 642 transitions, 12055 flow [2024-06-27 18:51:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 18:51:23,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:51:23,881 INFO L175 Difference]: Start difference. First operand has 214 places, 598 transitions, 10451 flow. Second operand 8 states and 180 transitions. [2024-06-27 18:51:23,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 642 transitions, 12055 flow [2024-06-27 18:51:24,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 642 transitions, 11577 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 18:51:24,886 INFO L231 Difference]: Finished difference. Result has 216 places, 601 transitions, 10546 flow [2024-06-27 18:51:24,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9973, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10546, PETRI_PLACES=216, PETRI_TRANSITIONS=601} [2024-06-27 18:51:24,887 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-06-27 18:51:24,887 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 601 transitions, 10546 flow [2024-06-27 18:51:24,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:24,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:24,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:24,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:51:24,888 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:24,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:24,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1876702461, now seen corresponding path program 2 times [2024-06-27 18:51:24,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:24,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872824713] [2024-06-27 18:51:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:24,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:25,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:25,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:25,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872824713] [2024-06-27 18:51:25,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872824713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:25,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:25,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:51:25,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075918055] [2024-06-27 18:51:25,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:25,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:51:25,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:51:25,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:51:25,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:25,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 601 transitions, 10546 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:25,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:25,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:25,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:27,439 INFO L124 PetriNetUnfolderBase]: 7004/10743 cut-off events. [2024-06-27 18:51:27,440 INFO L125 PetriNetUnfolderBase]: For 302194/302200 co-relation queries the response was YES. [2024-06-27 18:51:27,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76640 conditions, 10743 events. 7004/10743 cut-off events. For 302194/302200 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 64411 event pairs, 2322 based on Foata normal form. 7/10517 useless extension candidates. Maximal degree in co-relation 76540. Up to 9855 conditions per place. [2024-06-27 18:51:27,566 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 576 selfloop transitions, 54 changer transitions 0/637 dead transitions. [2024-06-27 18:51:27,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 637 transitions, 12182 flow [2024-06-27 18:51:27,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:51:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:51:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 18:51:27,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-27 18:51:27,568 INFO L175 Difference]: Start difference. First operand has 216 places, 601 transitions, 10546 flow. Second operand 6 states and 135 transitions. [2024-06-27 18:51:27,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 637 transitions, 12182 flow [2024-06-27 18:51:28,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 637 transitions, 11637 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:51:28,542 INFO L231 Difference]: Finished difference. Result has 216 places, 607 transitions, 10190 flow [2024-06-27 18:51:28,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10001, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10190, PETRI_PLACES=216, PETRI_TRANSITIONS=607} [2024-06-27 18:51:28,544 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-06-27 18:51:28,544 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 607 transitions, 10190 flow [2024-06-27 18:51:28,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:28,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:28,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:28,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:51:28,545 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:28,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:28,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1397095505, now seen corresponding path program 1 times [2024-06-27 18:51:28,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:28,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992329546] [2024-06-27 18:51:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:28,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:29,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:29,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992329546] [2024-06-27 18:51:29,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992329546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:29,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:29,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650125675] [2024-06-27 18:51:29,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:29,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:29,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:29,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:29,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:29,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:29,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 607 transitions, 10190 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:29,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:29,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:29,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:31,397 INFO L124 PetriNetUnfolderBase]: 7077/10776 cut-off events. [2024-06-27 18:51:31,397 INFO L125 PetriNetUnfolderBase]: For 307903/307918 co-relation queries the response was YES. [2024-06-27 18:51:31,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76690 conditions, 10776 events. 7077/10776 cut-off events. For 307903/307918 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 64113 event pairs, 2125 based on Foata normal form. 14/10579 useless extension candidates. Maximal degree in co-relation 76589. Up to 9655 conditions per place. [2024-06-27 18:51:31,512 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 584 selfloop transitions, 71 changer transitions 0/662 dead transitions. [2024-06-27 18:51:31,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 662 transitions, 12126 flow [2024-06-27 18:51:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:51:31,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:51:31,514 INFO L175 Difference]: Start difference. First operand has 216 places, 607 transitions, 10190 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:51:31,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 662 transitions, 12126 flow [2024-06-27 18:51:32,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 662 transitions, 11996 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 18:51:32,347 INFO L231 Difference]: Finished difference. Result has 221 places, 618 transitions, 10495 flow [2024-06-27 18:51:32,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10086, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10495, PETRI_PLACES=221, PETRI_TRANSITIONS=618} [2024-06-27 18:51:32,348 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 169 predicate places. [2024-06-27 18:51:32,348 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 618 transitions, 10495 flow [2024-06-27 18:51:32,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:32,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:32,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:32,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:51:32,349 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:32,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:32,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1521153985, now seen corresponding path program 2 times [2024-06-27 18:51:32,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:32,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517635204] [2024-06-27 18:51:32,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:32,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:33,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517635204] [2024-06-27 18:51:33,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517635204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:33,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:33,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:51:33,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979982635] [2024-06-27 18:51:33,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:33,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:51:33,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:51:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:51:33,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:33,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 618 transitions, 10495 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:33,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:33,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:33,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:35,428 INFO L124 PetriNetUnfolderBase]: 7077/10788 cut-off events. [2024-06-27 18:51:35,428 INFO L125 PetriNetUnfolderBase]: For 285062/285077 co-relation queries the response was YES. [2024-06-27 18:51:35,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76105 conditions, 10788 events. 7077/10788 cut-off events. For 285062/285077 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 64251 event pairs, 2239 based on Foata normal form. 14/10587 useless extension candidates. Maximal degree in co-relation 76003. Up to 9775 conditions per place. [2024-06-27 18:51:35,532 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 591 selfloop transitions, 71 changer transitions 0/669 dead transitions. [2024-06-27 18:51:35,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 669 transitions, 12173 flow [2024-06-27 18:51:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 18:51:35,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48792270531400966 [2024-06-27 18:51:35,533 INFO L175 Difference]: Start difference. First operand has 221 places, 618 transitions, 10495 flow. Second operand 9 states and 202 transitions. [2024-06-27 18:51:35,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 669 transitions, 12173 flow [2024-06-27 18:51:36,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 669 transitions, 11868 flow, removed 118 selfloop flow, removed 4 redundant places. [2024-06-27 18:51:36,226 INFO L231 Difference]: Finished difference. Result has 226 places, 620 transitions, 10411 flow [2024-06-27 18:51:36,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10240, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10411, PETRI_PLACES=226, PETRI_TRANSITIONS=620} [2024-06-27 18:51:36,226 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 174 predicate places. [2024-06-27 18:51:36,226 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 620 transitions, 10411 flow [2024-06-27 18:51:36,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:36,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:36,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:51:36,227 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:36,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1387564586, now seen corresponding path program 1 times [2024-06-27 18:51:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:36,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414745951] [2024-06-27 18:51:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414745951] [2024-06-27 18:51:36,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414745951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:36,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:36,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:51:36,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363346284] [2024-06-27 18:51:36,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:36,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:51:36,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:36,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:51:36,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:51:36,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:36,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 620 transitions, 10411 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:36,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:36,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:36,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:38,851 INFO L124 PetriNetUnfolderBase]: 7070/10766 cut-off events. [2024-06-27 18:51:38,852 INFO L125 PetriNetUnfolderBase]: For 279075/279102 co-relation queries the response was YES. [2024-06-27 18:51:38,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75269 conditions, 10766 events. 7070/10766 cut-off events. For 279075/279102 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 63915 event pairs, 1556 based on Foata normal form. 22/10551 useless extension candidates. Maximal degree in co-relation 75165. Up to 8878 conditions per place. [2024-06-27 18:51:38,995 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 383 selfloop transitions, 268 changer transitions 0/658 dead transitions. [2024-06-27 18:51:38,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 658 transitions, 11993 flow [2024-06-27 18:51:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:51:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:51:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:51:38,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-27 18:51:38,996 INFO L175 Difference]: Start difference. First operand has 226 places, 620 transitions, 10411 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:51:38,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 658 transitions, 11993 flow [2024-06-27 18:51:39,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 658 transitions, 11766 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:51:39,974 INFO L231 Difference]: Finished difference. Result has 226 places, 624 transitions, 10819 flow [2024-06-27 18:51:39,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10208, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10819, PETRI_PLACES=226, PETRI_TRANSITIONS=624} [2024-06-27 18:51:39,975 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 174 predicate places. [2024-06-27 18:51:39,975 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 624 transitions, 10819 flow [2024-06-27 18:51:39,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:39,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:39,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:39,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:51:39,975 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:39,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1130856314, now seen corresponding path program 10 times [2024-06-27 18:51:39,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:39,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723630745] [2024-06-27 18:51:39,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:39,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:40,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:40,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723630745] [2024-06-27 18:51:40,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723630745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:40,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:40,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:40,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059455196] [2024-06-27 18:51:40,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:40,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:40,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:40,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:40,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:41,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:41,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 624 transitions, 10819 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:41,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:41,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:41,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:43,373 INFO L124 PetriNetUnfolderBase]: 7255/11105 cut-off events. [2024-06-27 18:51:43,373 INFO L125 PetriNetUnfolderBase]: For 315309/315336 co-relation queries the response was YES. [2024-06-27 18:51:43,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78318 conditions, 11105 events. 7255/11105 cut-off events. For 315309/315336 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 66620 event pairs, 1588 based on Foata normal form. 46/10894 useless extension candidates. Maximal degree in co-relation 78213. Up to 8647 conditions per place. [2024-06-27 18:51:43,519 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 366 selfloop transitions, 300 changer transitions 0/673 dead transitions. [2024-06-27 18:51:43,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 673 transitions, 12529 flow [2024-06-27 18:51:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:51:43,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:51:43,521 INFO L175 Difference]: Start difference. First operand has 226 places, 624 transitions, 10819 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:51:43,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 673 transitions, 12529 flow [2024-06-27 18:51:44,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 673 transitions, 11997 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:51:44,464 INFO L231 Difference]: Finished difference. Result has 230 places, 628 transitions, 11015 flow [2024-06-27 18:51:44,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10287, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11015, PETRI_PLACES=230, PETRI_TRANSITIONS=628} [2024-06-27 18:51:44,465 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 178 predicate places. [2024-06-27 18:51:44,465 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 628 transitions, 11015 flow [2024-06-27 18:51:44,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:44,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:44,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:44,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:51:44,466 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:44,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:44,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1850494881, now seen corresponding path program 3 times [2024-06-27 18:51:44,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:44,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485824403] [2024-06-27 18:51:44,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:44,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:45,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:45,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485824403] [2024-06-27 18:51:45,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485824403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:45,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:45,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:51:45,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307595837] [2024-06-27 18:51:45,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:45,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:51:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:45,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:51:45,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:51:45,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:45,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 628 transitions, 11015 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:45,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:45,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:45,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:47,304 INFO L124 PetriNetUnfolderBase]: 7292/11169 cut-off events. [2024-06-27 18:51:47,304 INFO L125 PetriNetUnfolderBase]: For 321284/321290 co-relation queries the response was YES. [2024-06-27 18:51:47,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80095 conditions, 11169 events. 7292/11169 cut-off events. For 321284/321290 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 67267 event pairs, 2374 based on Foata normal form. 9/10945 useless extension candidates. Maximal degree in co-relation 79989. Up to 10258 conditions per place. [2024-06-27 18:51:47,445 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 597 selfloop transitions, 52 changer transitions 0/656 dead transitions. [2024-06-27 18:51:47,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 656 transitions, 12551 flow [2024-06-27 18:51:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:51:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:51:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 18:51:47,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-06-27 18:51:47,447 INFO L175 Difference]: Start difference. First operand has 230 places, 628 transitions, 11015 flow. Second operand 5 states and 119 transitions. [2024-06-27 18:51:47,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 656 transitions, 12551 flow [2024-06-27 18:51:48,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 656 transitions, 11914 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 18:51:48,374 INFO L231 Difference]: Finished difference. Result has 230 places, 631 transitions, 10574 flow [2024-06-27 18:51:48,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10378, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10574, PETRI_PLACES=230, PETRI_TRANSITIONS=631} [2024-06-27 18:51:48,374 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 178 predicate places. [2024-06-27 18:51:48,375 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 631 transitions, 10574 flow [2024-06-27 18:51:48,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:48,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:48,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:48,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:51:48,375 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:48,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:48,376 INFO L85 PathProgramCache]: Analyzing trace with hash 812976663, now seen corresponding path program 1 times [2024-06-27 18:51:48,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:48,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020771401] [2024-06-27 18:51:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:48,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:49,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020771401] [2024-06-27 18:51:49,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020771401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:49,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434940410] [2024-06-27 18:51:49,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:49,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:49,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:49,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:49,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:49,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 631 transitions, 10574 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:49,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:49,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:49,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:51,684 INFO L124 PetriNetUnfolderBase]: 7326/11241 cut-off events. [2024-06-27 18:51:51,684 INFO L125 PetriNetUnfolderBase]: For 320575/320596 co-relation queries the response was YES. [2024-06-27 18:51:51,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79266 conditions, 11241 events. 7326/11241 cut-off events. For 320575/320596 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 67781 event pairs, 1733 based on Foata normal form. 20/11021 useless extension candidates. Maximal degree in co-relation 79159. Up to 9717 conditions per place. [2024-06-27 18:51:51,806 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 481 selfloop transitions, 192 changer transitions 0/680 dead transitions. [2024-06-27 18:51:51,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 680 transitions, 12232 flow [2024-06-27 18:51:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-27 18:51:51,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:51:51,808 INFO L175 Difference]: Start difference. First operand has 230 places, 631 transitions, 10574 flow. Second operand 9 states and 198 transitions. [2024-06-27 18:51:51,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 680 transitions, 12232 flow [2024-06-27 18:51:52,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 680 transitions, 12152 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:51:52,544 INFO L231 Difference]: Finished difference. Result has 236 places, 634 transitions, 10980 flow [2024-06-27 18:51:52,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10494, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10980, PETRI_PLACES=236, PETRI_TRANSITIONS=634} [2024-06-27 18:51:52,545 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 184 predicate places. [2024-06-27 18:51:52,545 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 634 transitions, 10980 flow [2024-06-27 18:51:52,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:52,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:52,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:52,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:51:52,546 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:52,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1508605053, now seen corresponding path program 2 times [2024-06-27 18:51:52,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:52,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043625751] [2024-06-27 18:51:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:52,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:53,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:53,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043625751] [2024-06-27 18:51:53,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043625751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:53,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:53,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:51:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336347779] [2024-06-27 18:51:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:53,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:51:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:51:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:51:53,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:51:53,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 634 transitions, 10980 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:53,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:53,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:51:53,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:55,631 INFO L124 PetriNetUnfolderBase]: 7388/11234 cut-off events. [2024-06-27 18:51:55,631 INFO L125 PetriNetUnfolderBase]: For 337594/337615 co-relation queries the response was YES. [2024-06-27 18:51:55,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81437 conditions, 11234 events. 7388/11234 cut-off events. For 337594/337615 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 67375 event pairs, 2185 based on Foata normal form. 20/11043 useless extension candidates. Maximal degree in co-relation 81329. Up to 9943 conditions per place. [2024-06-27 18:51:55,784 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 499 selfloop transitions, 181 changer transitions 0/687 dead transitions. [2024-06-27 18:51:55,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 687 transitions, 12757 flow [2024-06-27 18:51:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:51:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:51:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 18:51:55,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-27 18:51:55,790 INFO L175 Difference]: Start difference. First operand has 236 places, 634 transitions, 10980 flow. Second operand 9 states and 201 transitions. [2024-06-27 18:51:55,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 687 transitions, 12757 flow [2024-06-27 18:51:56,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 687 transitions, 12224 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-27 18:51:56,765 INFO L231 Difference]: Finished difference. Result has 238 places, 640 transitions, 11021 flow [2024-06-27 18:51:56,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10530, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11021, PETRI_PLACES=238, PETRI_TRANSITIONS=640} [2024-06-27 18:51:56,766 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 186 predicate places. [2024-06-27 18:51:56,766 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 640 transitions, 11021 flow [2024-06-27 18:51:56,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:56,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:56,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:56,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:51:56,767 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:51:56,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1506356313, now seen corresponding path program 3 times [2024-06-27 18:51:56,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:56,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619423562] [2024-06-27 18:51:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:57,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619423562] [2024-06-27 18:51:57,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619423562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:57,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:57,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:51:57,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584503340] [2024-06-27 18:51:57,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:57,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:51:57,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:51:57,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:51:57,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:51:57,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 640 transitions, 11021 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) [2024-06-27 18:51:57,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:57,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:51:57,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:59,825 INFO L124 PetriNetUnfolderBase]: 7651/11778 cut-off events. [2024-06-27 18:51:59,826 INFO L125 PetriNetUnfolderBase]: For 379985/380104 co-relation queries the response was YES. [2024-06-27 18:51:59,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85360 conditions, 11778 events. 7651/11778 cut-off events. For 379985/380104 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 72447 event pairs, 1495 based on Foata normal form. 113/11618 useless extension candidates. Maximal degree in co-relation 85251. Up to 8280 conditions per place. [2024-06-27 18:51:59,984 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 413 selfloop transitions, 252 changer transitions 0/712 dead transitions. [2024-06-27 18:51:59,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 712 transitions, 13133 flow [2024-06-27 18:51:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:51:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:51:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 18:51:59,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-27 18:51:59,985 INFO L175 Difference]: Start difference. First operand has 238 places, 640 transitions, 11021 flow. Second operand 8 states and 199 transitions. [2024-06-27 18:51:59,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 712 transitions, 13133 flow [2024-06-27 18:52:01,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 712 transitions, 12756 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 18:52:01,206 INFO L231 Difference]: Finished difference. Result has 241 places, 657 transitions, 11540 flow [2024-06-27 18:52:01,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10644, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11540, PETRI_PLACES=241, PETRI_TRANSITIONS=657} [2024-06-27 18:52:01,207 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 189 predicate places. [2024-06-27 18:52:01,207 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 657 transitions, 11540 flow [2024-06-27 18:52:01,207 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) [2024-06-27 18:52:01,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:01,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:01,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:52:01,207 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:01,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1264995429, now seen corresponding path program 4 times [2024-06-27 18:52:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:01,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454691558] [2024-06-27 18:52:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:01,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:01,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:01,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454691558] [2024-06-27 18:52:01,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454691558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:01,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:01,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290512389] [2024-06-27 18:52:01,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:01,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:01,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:02,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:02,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 657 transitions, 11540 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:02,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:02,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:02,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:04,594 INFO L124 PetriNetUnfolderBase]: 8015/12176 cut-off events. [2024-06-27 18:52:04,594 INFO L125 PetriNetUnfolderBase]: For 418132/418147 co-relation queries the response was YES. [2024-06-27 18:52:04,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91917 conditions, 12176 events. 8015/12176 cut-off events. For 418132/418147 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 73897 event pairs, 2379 based on Foata normal form. 14/11982 useless extension candidates. Maximal degree in co-relation 91806. Up to 10630 conditions per place. [2024-06-27 18:52:04,759 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 513 selfloop transitions, 196 changer transitions 0/716 dead transitions. [2024-06-27 18:52:04,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 716 transitions, 13736 flow [2024-06-27 18:52:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:52:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:52:04,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-27 18:52:04,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49516908212560384 [2024-06-27 18:52:04,761 INFO L175 Difference]: Start difference. First operand has 241 places, 657 transitions, 11540 flow. Second operand 9 states and 205 transitions. [2024-06-27 18:52:04,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 716 transitions, 13736 flow [2024-06-27 18:52:06,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 716 transitions, 13467 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-06-27 18:52:06,122 INFO L231 Difference]: Finished difference. Result has 248 places, 667 transitions, 12090 flow [2024-06-27 18:52:06,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11325, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12090, PETRI_PLACES=248, PETRI_TRANSITIONS=667} [2024-06-27 18:52:06,123 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 196 predicate places. [2024-06-27 18:52:06,123 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 667 transitions, 12090 flow [2024-06-27 18:52:06,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:06,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:06,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:06,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:52:06,124 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:06,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:06,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1414058893, now seen corresponding path program 5 times [2024-06-27 18:52:06,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:06,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794865749] [2024-06-27 18:52:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:06,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:06,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794865749] [2024-06-27 18:52:06,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794865749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:06,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:06,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:06,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394862870] [2024-06-27 18:52:06,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:06,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:06,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:06,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:06,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:52:06,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 667 transitions, 12090 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) [2024-06-27 18:52:06,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:06,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:52:06,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:09,401 INFO L124 PetriNetUnfolderBase]: 7927/12195 cut-off events. [2024-06-27 18:52:09,401 INFO L125 PetriNetUnfolderBase]: For 445060/445175 co-relation queries the response was YES. [2024-06-27 18:52:09,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92258 conditions, 12195 events. 7927/12195 cut-off events. For 445060/445175 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 75545 event pairs, 1515 based on Foata normal form. 119/12026 useless extension candidates. Maximal degree in co-relation 92144. Up to 9548 conditions per place. [2024-06-27 18:52:09,562 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 424 selfloop transitions, 248 changer transitions 0/719 dead transitions. [2024-06-27 18:52:09,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 719 transitions, 13855 flow [2024-06-27 18:52:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:52:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:52:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 18:52:09,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-27 18:52:09,563 INFO L175 Difference]: Start difference. First operand has 248 places, 667 transitions, 12090 flow. Second operand 8 states and 197 transitions. [2024-06-27 18:52:09,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 719 transitions, 13855 flow [2024-06-27 18:52:10,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 719 transitions, 13496 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-27 18:52:10,984 INFO L231 Difference]: Finished difference. Result has 251 places, 669 transitions, 12347 flow [2024-06-27 18:52:10,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11736, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12347, PETRI_PLACES=251, PETRI_TRANSITIONS=669} [2024-06-27 18:52:10,985 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 199 predicate places. [2024-06-27 18:52:10,986 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 669 transitions, 12347 flow [2024-06-27 18:52:10,986 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) [2024-06-27 18:52:10,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:10,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:10,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:52:10,986 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:10,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1854485873, now seen corresponding path program 6 times [2024-06-27 18:52:10,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:10,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731879782] [2024-06-27 18:52:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:10,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731879782] [2024-06-27 18:52:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731879782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:11,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:11,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:11,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608648039] [2024-06-27 18:52:11,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:11,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:11,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:11,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:11,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:11,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:11,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 669 transitions, 12347 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:11,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:11,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:11,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:14,646 INFO L124 PetriNetUnfolderBase]: 8145/12386 cut-off events. [2024-06-27 18:52:14,646 INFO L125 PetriNetUnfolderBase]: For 439086/439101 co-relation queries the response was YES. [2024-06-27 18:52:14,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95432 conditions, 12386 events. 8145/12386 cut-off events. For 439086/439101 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 75549 event pairs, 2482 based on Foata normal form. 14/12191 useless extension candidates. Maximal degree in co-relation 95316. Up to 11085 conditions per place. [2024-06-27 18:52:14,789 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 518 selfloop transitions, 191 changer transitions 0/716 dead transitions. [2024-06-27 18:52:14,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 716 transitions, 14017 flow [2024-06-27 18:52:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:52:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:52:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 18:52:14,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48792270531400966 [2024-06-27 18:52:14,791 INFO L175 Difference]: Start difference. First operand has 251 places, 669 transitions, 12347 flow. Second operand 9 states and 202 transitions. [2024-06-27 18:52:14,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 716 transitions, 14017 flow [2024-06-27 18:52:16,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 716 transitions, 13440 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-27 18:52:16,068 INFO L231 Difference]: Finished difference. Result has 255 places, 669 transitions, 12164 flow [2024-06-27 18:52:16,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11770, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12164, PETRI_PLACES=255, PETRI_TRANSITIONS=669} [2024-06-27 18:52:16,068 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 203 predicate places. [2024-06-27 18:52:16,069 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 669 transitions, 12164 flow [2024-06-27 18:52:16,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:16,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:16,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:16,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:52:16,069 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:16,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash 638361275, now seen corresponding path program 1 times [2024-06-27 18:52:16,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:16,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132021553] [2024-06-27 18:52:16,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:16,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:16,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132021553] [2024-06-27 18:52:16,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132021553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:16,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139288254] [2024-06-27 18:52:16,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:16,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:16,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:16,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:16,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 669 transitions, 12164 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:16,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:16,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:16,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:19,308 INFO L124 PetriNetUnfolderBase]: 8234/12578 cut-off events. [2024-06-27 18:52:19,308 INFO L125 PetriNetUnfolderBase]: For 440603/440621 co-relation queries the response was YES. [2024-06-27 18:52:19,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95305 conditions, 12578 events. 8234/12578 cut-off events. For 440603/440621 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 76969 event pairs, 2114 based on Foata normal form. 20/12363 useless extension candidates. Maximal degree in co-relation 95187. Up to 11363 conditions per place. [2024-06-27 18:52:19,445 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 600 selfloop transitions, 166 changer transitions 0/773 dead transitions. [2024-06-27 18:52:19,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 773 transitions, 15270 flow [2024-06-27 18:52:19,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:52:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:52:19,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:52:19,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:52:19,447 INFO L175 Difference]: Start difference. First operand has 255 places, 669 transitions, 12164 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:52:19,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 773 transitions, 15270 flow [2024-06-27 18:52:20,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 773 transitions, 14806 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:52:20,651 INFO L231 Difference]: Finished difference. Result has 259 places, 731 transitions, 13478 flow [2024-06-27 18:52:20,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11750, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13478, PETRI_PLACES=259, PETRI_TRANSITIONS=731} [2024-06-27 18:52:20,651 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 207 predicate places. [2024-06-27 18:52:20,652 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 731 transitions, 13478 flow [2024-06-27 18:52:20,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:20,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:20,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:52:20,652 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash -904533157, now seen corresponding path program 7 times [2024-06-27 18:52:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373044872] [2024-06-27 18:52:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:21,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:21,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373044872] [2024-06-27 18:52:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373044872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:21,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746125719] [2024-06-27 18:52:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:21,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:21,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:21,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:21,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:21,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:21,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 731 transitions, 13478 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:21,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:21,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:21,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:24,288 INFO L124 PetriNetUnfolderBase]: 8273/12655 cut-off events. [2024-06-27 18:52:24,288 INFO L125 PetriNetUnfolderBase]: For 471994/472015 co-relation queries the response was YES. [2024-06-27 18:52:24,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98705 conditions, 12655 events. 8273/12655 cut-off events. For 471994/472015 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 77404 event pairs, 2088 based on Foata normal form. 20/12432 useless extension candidates. Maximal degree in co-relation 98582. Up to 10746 conditions per place. [2024-06-27 18:52:24,475 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 523 selfloop transitions, 247 changer transitions 0/777 dead transitions. [2024-06-27 18:52:24,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 777 transitions, 15476 flow [2024-06-27 18:52:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:52:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:52:24,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-27 18:52:24,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48097826086956524 [2024-06-27 18:52:24,477 INFO L175 Difference]: Start difference. First operand has 259 places, 731 transitions, 13478 flow. Second operand 8 states and 177 transitions. [2024-06-27 18:52:24,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 777 transitions, 15476 flow [2024-06-27 18:52:26,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 777 transitions, 15320 flow, removed 77 selfloop flow, removed 1 redundant places. [2024-06-27 18:52:26,060 INFO L231 Difference]: Finished difference. Result has 267 places, 737 transitions, 14143 flow [2024-06-27 18:52:26,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13322, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14143, PETRI_PLACES=267, PETRI_TRANSITIONS=737} [2024-06-27 18:52:26,061 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 215 predicate places. [2024-06-27 18:52:26,061 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 737 transitions, 14143 flow [2024-06-27 18:52:26,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:26,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:26,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:26,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:52:26,062 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:26,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1538798529, now seen corresponding path program 8 times [2024-06-27 18:52:26,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:26,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634295631] [2024-06-27 18:52:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:26,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:26,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:26,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634295631] [2024-06-27 18:52:26,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634295631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:26,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:26,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246639730] [2024-06-27 18:52:26,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:26,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:26,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:26,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:26,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 737 transitions, 14143 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:26,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:26,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:26,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:29,983 INFO L124 PetriNetUnfolderBase]: 8380/12810 cut-off events. [2024-06-27 18:52:29,983 INFO L125 PetriNetUnfolderBase]: For 497133/497148 co-relation queries the response was YES. [2024-06-27 18:52:30,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102610 conditions, 12810 events. 8380/12810 cut-off events. For 497133/497148 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 78769 event pairs, 2396 based on Foata normal form. 14/12583 useless extension candidates. Maximal degree in co-relation 102483. Up to 10600 conditions per place. [2024-06-27 18:52:30,164 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 512 selfloop transitions, 271 changer transitions 0/790 dead transitions. [2024-06-27 18:52:30,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 790 transitions, 16461 flow [2024-06-27 18:52:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:52:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:52:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 18:52:30,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 18:52:30,166 INFO L175 Difference]: Start difference. First operand has 267 places, 737 transitions, 14143 flow. Second operand 8 states and 182 transitions. [2024-06-27 18:52:30,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 790 transitions, 16461 flow [2024-06-27 18:52:32,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 790 transitions, 16057 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-27 18:52:32,655 INFO L231 Difference]: Finished difference. Result has 272 places, 747 transitions, 14700 flow [2024-06-27 18:52:32,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13739, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14700, PETRI_PLACES=272, PETRI_TRANSITIONS=747} [2024-06-27 18:52:32,656 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 220 predicate places. [2024-06-27 18:52:32,656 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 747 transitions, 14700 flow [2024-06-27 18:52:32,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:32,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:32,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:32,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:52:32,657 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:32,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1538803179, now seen corresponding path program 9 times [2024-06-27 18:52:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786787864] [2024-06-27 18:52:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:33,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:33,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786787864] [2024-06-27 18:52:33,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786787864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:33,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:33,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:52:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543225462] [2024-06-27 18:52:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:33,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:52:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:52:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:52:33,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:33,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 747 transitions, 14700 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:33,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:33,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:33,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:37,271 INFO L124 PetriNetUnfolderBase]: 8372/12806 cut-off events. [2024-06-27 18:52:37,271 INFO L125 PetriNetUnfolderBase]: For 513449/513464 co-relation queries the response was YES. [2024-06-27 18:52:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104467 conditions, 12806 events. 8372/12806 cut-off events. For 513449/513464 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 78709 event pairs, 2473 based on Foata normal form. 14/12579 useless extension candidates. Maximal degree in co-relation 104337. Up to 11082 conditions per place. [2024-06-27 18:52:37,532 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 523 selfloop transitions, 258 changer transitions 0/788 dead transitions. [2024-06-27 18:52:37,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 788 transitions, 16518 flow [2024-06-27 18:52:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:52:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:52:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 18:52:37,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-27 18:52:37,548 INFO L175 Difference]: Start difference. First operand has 272 places, 747 transitions, 14700 flow. Second operand 8 states and 179 transitions. [2024-06-27 18:52:37,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 788 transitions, 16518 flow [2024-06-27 18:52:39,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 788 transitions, 15990 flow, removed 129 selfloop flow, removed 4 redundant places. [2024-06-27 18:52:39,282 INFO L231 Difference]: Finished difference. Result has 276 places, 747 transitions, 14708 flow [2024-06-27 18:52:39,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14172, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14708, PETRI_PLACES=276, PETRI_TRANSITIONS=747} [2024-06-27 18:52:39,283 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 224 predicate places. [2024-06-27 18:52:39,283 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 747 transitions, 14708 flow [2024-06-27 18:52:39,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:39,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:39,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:39,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:52:39,284 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:39,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash -871621621, now seen corresponding path program 2 times [2024-06-27 18:52:39,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:39,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827308360] [2024-06-27 18:52:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:39,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:39,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827308360] [2024-06-27 18:52:39,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827308360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:39,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:39,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:39,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077513946] [2024-06-27 18:52:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:39,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:39,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:39,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 747 transitions, 14708 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:39,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:39,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:39,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:43,390 INFO L124 PetriNetUnfolderBase]: 8528/12972 cut-off events. [2024-06-27 18:52:43,390 INFO L125 PetriNetUnfolderBase]: For 509700/509710 co-relation queries the response was YES. [2024-06-27 18:52:43,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105767 conditions, 12972 events. 8528/12972 cut-off events. For 509700/509710 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 79029 event pairs, 2183 based on Foata normal form. 12/12750 useless extension candidates. Maximal degree in co-relation 105635. Up to 11710 conditions per place. [2024-06-27 18:52:43,579 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 632 selfloop transitions, 194 changer transitions 0/833 dead transitions. [2024-06-27 18:52:43,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 833 transitions, 17503 flow [2024-06-27 18:52:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:52:43,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:52:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:52:43,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:52:43,582 INFO L175 Difference]: Start difference. First operand has 276 places, 747 transitions, 14708 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:52:43,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 833 transitions, 17503 flow [2024-06-27 18:52:45,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 833 transitions, 16916 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:52:45,026 INFO L231 Difference]: Finished difference. Result has 277 places, 779 transitions, 15074 flow [2024-06-27 18:52:45,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14127, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15074, PETRI_PLACES=277, PETRI_TRANSITIONS=779} [2024-06-27 18:52:45,027 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 225 predicate places. [2024-06-27 18:52:45,027 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 779 transitions, 15074 flow [2024-06-27 18:52:45,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:45,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:45,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:45,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:52:45,028 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:45,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash -980496579, now seen corresponding path program 3 times [2024-06-27 18:52:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:45,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486553521] [2024-06-27 18:52:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:45,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:45,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:45,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486553521] [2024-06-27 18:52:45,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486553521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:45,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:45,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136093765] [2024-06-27 18:52:45,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:45,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:45,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:45,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:45,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:45,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 779 transitions, 15074 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:45,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:45,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:45,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:49,072 INFO L124 PetriNetUnfolderBase]: 8552/12999 cut-off events. [2024-06-27 18:52:49,072 INFO L125 PetriNetUnfolderBase]: For 507254/507262 co-relation queries the response was YES. [2024-06-27 18:52:49,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105893 conditions, 12999 events. 8552/12999 cut-off events. For 507254/507262 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 79034 event pairs, 2175 based on Foata normal form. 10/12773 useless extension candidates. Maximal degree in co-relation 105760. Up to 11735 conditions per place. [2024-06-27 18:52:49,231 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 615 selfloop transitions, 215 changer transitions 0/837 dead transitions. [2024-06-27 18:52:49,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 837 transitions, 17491 flow [2024-06-27 18:52:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:52:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:52:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:52:49,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 18:52:49,233 INFO L175 Difference]: Start difference. First operand has 277 places, 779 transitions, 15074 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:52:49,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 837 transitions, 17491 flow [2024-06-27 18:52:50,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 837 transitions, 17033 flow, removed 141 selfloop flow, removed 3 redundant places. [2024-06-27 18:52:50,734 INFO L231 Difference]: Finished difference. Result has 282 places, 790 transitions, 15303 flow [2024-06-27 18:52:50,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14707, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15303, PETRI_PLACES=282, PETRI_TRANSITIONS=790} [2024-06-27 18:52:50,734 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 230 predicate places. [2024-06-27 18:52:50,734 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 790 transitions, 15303 flow [2024-06-27 18:52:50,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:50,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:50,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:50,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:52:50,735 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:50,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:50,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1025730446, now seen corresponding path program 1 times [2024-06-27 18:52:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:50,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733251225] [2024-06-27 18:52:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:50,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:51,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733251225] [2024-06-27 18:52:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733251225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:51,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:51,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691496661] [2024-06-27 18:52:51,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:51,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:51,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:51,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 790 transitions, 15303 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:51,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:51,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:51,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:54,874 INFO L124 PetriNetUnfolderBase]: 8648/13181 cut-off events. [2024-06-27 18:52:54,874 INFO L125 PetriNetUnfolderBase]: For 526814/526820 co-relation queries the response was YES. [2024-06-27 18:52:54,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107038 conditions, 13181 events. 8648/13181 cut-off events. For 526814/526820 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 80916 event pairs, 2786 based on Foata normal form. 8/12945 useless extension candidates. Maximal degree in co-relation 106904. Up to 12099 conditions per place. [2024-06-27 18:52:55,051 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 761 selfloop transitions, 84 changer transitions 0/852 dead transitions. [2024-06-27 18:52:55,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 852 transitions, 17862 flow [2024-06-27 18:52:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:52:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:52:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 18:52:55,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 18:52:55,052 INFO L175 Difference]: Start difference. First operand has 282 places, 790 transitions, 15303 flow. Second operand 8 states and 185 transitions. [2024-06-27 18:52:55,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 852 transitions, 17862 flow [2024-06-27 18:52:56,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 852 transitions, 17517 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-27 18:52:56,865 INFO L231 Difference]: Finished difference. Result has 287 places, 803 transitions, 15410 flow [2024-06-27 18:52:56,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14996, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=715, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15410, PETRI_PLACES=287, PETRI_TRANSITIONS=803} [2024-06-27 18:52:56,866 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 235 predicate places. [2024-06-27 18:52:56,866 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 803 transitions, 15410 flow [2024-06-27 18:52:56,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:56,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:56,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:56,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:52:56,867 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:52:56,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1050058259, now seen corresponding path program 4 times [2024-06-27 18:52:56,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235180827] [2024-06-27 18:52:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:57,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235180827] [2024-06-27 18:52:57,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235180827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:57,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:57,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:52:57,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425285705] [2024-06-27 18:52:57,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:57,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:52:57,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:57,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:52:57,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:52:57,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:52:57,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 803 transitions, 15410 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:57,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:57,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:52:57,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:01,171 INFO L124 PetriNetUnfolderBase]: 8705/13275 cut-off events. [2024-06-27 18:53:01,171 INFO L125 PetriNetUnfolderBase]: For 546489/546495 co-relation queries the response was YES. [2024-06-27 18:53:01,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108665 conditions, 13275 events. 8705/13275 cut-off events. For 546489/546495 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 81747 event pairs, 2650 based on Foata normal form. 9/13042 useless extension candidates. Maximal degree in co-relation 108529. Up to 11919 conditions per place. [2024-06-27 18:53:01,346 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 621 selfloop transitions, 232 changer transitions 0/860 dead transitions. [2024-06-27 18:53:01,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 860 transitions, 17860 flow [2024-06-27 18:53:01,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:53:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:53:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 18:53:01,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 18:53:01,348 INFO L175 Difference]: Start difference. First operand has 287 places, 803 transitions, 15410 flow. Second operand 7 states and 159 transitions. [2024-06-27 18:53:01,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 860 transitions, 17860 flow [2024-06-27 18:53:03,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 860 transitions, 17607 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-27 18:53:03,039 INFO L231 Difference]: Finished difference. Result has 290 places, 821 transitions, 16054 flow [2024-06-27 18:53:03,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15193, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16054, PETRI_PLACES=290, PETRI_TRANSITIONS=821} [2024-06-27 18:53:03,040 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 238 predicate places. [2024-06-27 18:53:03,040 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 821 transitions, 16054 flow [2024-06-27 18:53:03,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:03,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:03,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:03,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:53:03,041 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:03,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1951766317, now seen corresponding path program 5 times [2024-06-27 18:53:03,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:03,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772474797] [2024-06-27 18:53:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:03,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:03,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:03,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772474797] [2024-06-27 18:53:03,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772474797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:03,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:03,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:53:03,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107881000] [2024-06-27 18:53:03,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:03,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:53:03,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:53:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:53:03,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:53:03,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 821 transitions, 16054 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:03,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:03,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:53:03,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand